JP4857809B2 - Package - Google Patents

Description

  The present invention relates to a package, and more specifically, has heat sealability, excellent airtightness and easy-openability, and further has biodegradability and excellent disposal suitability. A packaging body in which a cover made of a laminate material using an extremely useful easy peel sealant is used, and the flange portion constituting the opening of the plastic molded container is sealed and sealed. It is.

2. Description of the Related Art Conventionally, plastic molded containers having various forms have been developed and proposed, and various articles such as foods and drinks and the like are filled therein, and thereafter, flange portions that constitute the openings of the plastic molded containers In addition, a lid product is heat sealed and its opening is sealed, and packaged products having various forms are manufactured.
Thus, as the above-mentioned cover material, usually, a laminated material of a base sheet and a heat seal film, or a base sheet, a barrier base material and a heat seal property is used. It is comprised from the laminated material with a film.
By the way, as the heat-sealable film constituting the above-mentioned lid material, in particular, at the time of consumption while satisfying the sealing property of sealing the flange part constituting the opening part of the plastic molded container by heat-seal. Of course, it is required to have an easy-opening property that can be easily opened from the flange part that constitutes the opening of the plastic molded container. In this case, biodegradability and the like are required, and it is required to have a disposal property that does not destroy the natural environment.
Therefore, in recent years, with respect to the heat-sealable film constituting the above-mentioned lid material, a heat-sealable film having various laminated structures has been developed using a biodegradable resin film or sheet. Has been proposed.
For example, as one of them, in a film containing a polylactic acid polymer and another aliphatic polyester in a weight ratio of 80:20 to 20:80, the polylactic acid polymer when the film is heated There has been proposed a biodegradable film characterized in that the converted heat of fusion ΔHml is 35 J / g or less and a method for producing the same (for example, see Patent Document 1).
As another example, polylactic acid (A): 10 to 90% by weight, other aliphatic polyester (B): 90 to 10% by weight, and tackifier (C): 1 to 20% by weight An aliphatic polyester composition characterized by the above, a film and a laminate obtained from the aliphatic polyester composition have been proposed (see, for example, Patent Document 2).
JP-A-11-222528 JP 2002-173589 A

The compositions, films and laminates proposed above have the advantage that they are biodegradable, decompose in the natural environment, and can be avoided as a cause of environmental destruction. Or aliphatic polyester has a problem that it has a relatively high melting point, requires heat processing at a high temperature, and it is extremely difficult to produce a desirable film or laminate.
Even if a film or a laminate can be produced as described above, they are hard, brittle, inferior in flexibility, impact resistance, etc., practically unusable, and in heat sealability, etc. For example, even if the flange part constituting the opening of the plastic molding container is sealed, it is lacking in its sealing property, etc. There is a problem that it is inferior in easy-opening property and the like that can be easily opened.
For example, in the case where the flange portion of the plastic molded container is a flange portion having a projecting portion or the like, when the cover material is heat sealed with a ring seal, the seal constituting the cover material is formed. There is a problem that the layer is easily pierced and it is extremely difficult to obtain good sealing properties and easy opening properties.
In addition, when the seal area of the flange portion of the plastic molded container is small, even if the cover material is heat-sealed with a ring seal, the seal area is small and the sealing performance is not good. There is a problem that it is stable and it is extremely difficult to perform its function.
In fact, none of the films or laminates proposed above is yet fully satisfactory.
Therefore, the present invention has a heat seal property, an excellent sealability, an easy-opening property, a biodegradability, and a very useful easy-to-use disposal property. It is intended to provide a package in which a lid member made of a laminate material using a peel sealant is used, and the flange portion constituting the opening of the plastic molded container is thereby sealed.

  As a result of various studies to improve the above problems, the present inventor uses a biodegradable resin and a polyethylene resin, paying attention to the coextrusion lamination processability, The polybutylene succinate is used as a main component, and the polybutylene succinate and the polyethylene-based resin are mixed in the latter 10 to 50 parts by weight with respect to the former 50 to 90 parts by weight. And a resin composition containing as a main component a mixture composed of a mixture ratio of the above, using both of the resin compositions, co-extrusion laminating them, and at least two layers of a base material layer and a seal layer Further, the base layer is composed of a resin layer made of a resin composition mainly composed of the polybutylene succinate, and the film thickness is about 10 to 50 μm. And the above seal layer, The polybutylene succinate and the polyethylene resin are composed of a resin layer composed of a resin composition mainly composed of a mixed resin composed of 10 to 50 parts by weight of the latter with respect to 50 to 90 parts by weight of the former. And the film thickness is 1 μm to 40 μm, and a co-extruded laminated film of both resin layers is manufactured, and thus the co-extruded laminated film of both resin layers is used as an easy peel sealant. Then, on the surface of the base material layer constituting the easy-peel sealant, for example, other biodegradable base material sheets, barrier base materials, etc. are laminated to produce a lid material. After that, using the lid, the plastic molded container prepared separately is filled with, for example, food and drink, and other articles, and then the surface of the flange portion constituting the opening of the plastic molded container In addition, the above-mentioned lid material is attached to its easy peel. The runt surfaces were placed facing each other, and after that, the lid material was heat sealed on the surface of the flange portion constituting the opening of the plastic molded container, and the packaged product was manufactured by sealing it. The easy-peel sealant that constitutes the above-mentioned lid material has excellent heat-seal characteristics and excellent sealing properties against the flange part that constitutes the opening of the plastic molded container. In this case, the lid is made of a laminated material using an extremely useful easy-peel sealant that has extremely good easy-opening properties, is biodegradable, and is excellent in disposal treatment after use. The present invention has been completed by finding a package in which a plastic molded container is sealed with a material.

  That is, the present invention comprises at least a base sheet and a two-layer coextruded laminated film of a base layer and a seal layer. Further, the base layer is made of polybutylene succinate. The above-mentioned seal layer is composed of a polybutylene succinate and a polyethylene resin, and the latter 10 to 50 parts by weight with respect to 50 to 90 parts by weight of the former. A cover material comprising a resin layer made of a resin composition containing a mixed resin composed of parts by weight as a main component and an easy-peel sealant made of a coextruded laminated film of both resin layers. Further, the lid material is overlapped with the surface of the easy-peel sealant on the surface of the flange portion constituting the opening of the plastic molded container, and both are sealed. Also related to a package characterized by having a hermetically sealed structure It is.

Since the easy-peel sealant according to the present invention is composed of a biodegradable resin such as polybutylene succinate as a material constituting the base material layer, The layer can be hardened and can be configured to have a so-called waist, which has the advantage that the escape, flow, etc. of the resin can be suppressed at the time of heat sealing and has biodegradability. Have the advantage of degrading in the natural environment.
In addition, the easy peel sealant according to the present invention uses polybutylene succinate and polyethylene resin as a material constituting the seal layer, and is composed of a mixture thereof. Polyethylene resin provides flexibility to polybutylene succinate itself, improving impact resistance, etc., and also maintaining the cohesive failure function. This has the advantage that phenomena such as these can be suppressed.
Further, the easy peel sealant according to the present invention can have a seal layer thickness of about 1 μm to 40 μm. For example, when a cover material is heat sealed on a flange portion constituting an opening of a plastic molded container by increasing the film thickness of the layer to 15 μm to 40 μm, for example, Even when the flange portion constituting the opening portion is a seal portion having a protruding part or the like, even if the lid material is heat sealed with a ring seal, the seal layer It is possible to obtain favorable sealing and easy opening without being pierced.
Also, even if the seal area of the flange portion constituting the opening of the plastic molded container is small, even if the cover material is heat sealed with a ring seal, the hermeticity does not become unstable. It has a very good sealing property.
Furthermore, in the present invention, polybutylene succinate is used as a material constituting the base material layer and the seal layer to improve the compatibility between them, and further, a polyethylene resin is used. As a result, the coextrusion lamination processability of the polybutylene succinate can be improved, and a two-layer coextrusion lamination film can be produced very well.
That is, the easy-peel sealant according to the present invention is excellent in heat-sealability as a heat-seal material, and can sufficiently satisfy its sealing property. In addition to satisfying the requirements of quality protection, extension of storage period, etc., it also has excellent easy peelability, and can be opened easily when packaging, etc. Furthermore, it can form a very beautiful peeling interface in which no phenomenon such as stringing is observed at the peeling interface, and can be applied to various plastic molding container lids.
Furthermore, the easy-peel sealant according to the present invention has the advantage of being biodegradable and degradable in the natural environment. In particular, as a plastic molded container, for example, When using a molded container made of polylactic acid resin and applying it as a lid, the lid, packaging container, etc. are both biodegradable and have the effect of being degradable in the natural environment. It is.

Hereinafter, the present invention will be described in more detail with reference to the drawings.
First, FIG. 1 is a schematic cross-sectional view showing an example of the layer structure of an easy-peel sealant according to the present invention, and FIGS. 2 and 3 are diagrams showing an example according to the present invention shown in FIG. FIG. 4 is a schematic cross-sectional view showing one example of the layer structure of a lid material according to the present invention manufactured using a di-peel sealant, and FIG. 4 is a lid according to the present invention shown in FIG. It is a schematic perspective view which shows the outline of the structure about the packaging product which concerns on this invention manufactured using the material and sealing the plastic molding container.

  First, in the present invention, the easy-peel sealant according to the present invention will be described. The easy-peel sealant A according to the present invention includes, for example, at least a group as shown in FIG. The resin layer 1a is composed of a two-layer coextruded laminated film 3 of a material layer 1 and a seal layer 2, and the base layer 1 is made of a resin composition containing polybutylene succinate as a main component. In addition, the seal layer 2 is mainly composed of a mixture of polybutylene succinate and polyethylene resin having a blending ratio of 10 to 50 parts by weight of the latter with respect to 50 to 90 parts by weight of the former. It is composed of a resin layer 2a made of a resin composition as a component, and is basically composed of a coextruded laminated film 3a of both resin layers.

The above illustrations are examples of the layer structure of the easy-peel sealant according to the present invention, and it goes without saying that the present invention is not limited thereto. .
In addition, in the easy peel sealant according to the present invention, in addition to the base material layer and the seal layer, for example, in order to strengthen the tight adhesion of both layers, other It is also possible to use a resin composition and have a laminated structure of three layers or more.

Next, in the present invention, the lid material according to the present invention manufactured by using the above-described easy-peel sealant according to the present invention will be described. As described above, in the case where the easy peel sealant A according to the present invention shown in FIG. 1 is used, first, for example, the base sheet 11 made of a desired biodegradable resin is used. For example, after forming a printed pattern layer 12 made of a desired character, symbol, pattern, figure, etc. on the back surface made of corona treatment or the like, the surface of the substrate sheet 11 including the printed pattern layer 12 The above-described easy-peel sealant A according to the present invention shown in FIG. 1 is laminated with the surfaces of one base layer (1, 1a) constituting the same facing each other. B, and thus using the easy peel sealant A according to the present invention as described above. The laminate material B according to the present invention prepared by, those which can be used as a lid material B ₁ according to the present invention.

Moreover, in this invention, when another example is illustrated about the lid | cover material manufactured using the above-mentioned easy-peel sealant based on this invention, as shown in FIG. After the printed pattern layer 12 made of, for example, desired characters, symbols, patterns, figures, etc. is formed on the back surface of the base sheet 11 made of the desired biodegradable resin, the printing is performed. A barrier base material 13 is laminated and laminated on the surface of the base material sheet 11 including the pattern layer 12, and the surface according to the present invention shown in FIG. -A laminate material C is produced by laminating the di-peel sealant A with the surfaces of one of the base material layers (1, 1a) constituting the laminate facing each other. Thus, the laminated material C according to the present invention manufactured using the easy-peel sealant A according to the present invention Those which can be used as a lid material C ₁ according to the present invention.
In FIG. 2 and FIG. 3, the meanings of reference numerals 1, 2, 3, 1a, 2a, 3a, A, etc. represent the same reference numerals as those in FIG.
The above examples illustrate one or two examples of the lid material according to the present invention manufactured using the easy-peel sealant according to the present invention, and the present invention is not limited thereto. It is not something.

For example, although not shown, the lid according to the present invention may be formed by arbitrarily laminating other base materials between the layers depending on, for example, the contents to be filled and packaged, the purpose of the packaging, the packaging form, etc. The lid material according to the present invention having various forms can be manufactured.
In the above, as a laminating method for laminating at least a base material sheet made of a biodegradable resin, a barrier base material, an easy peel sealant according to the present invention, and the like, for example, laminating A laminating adhesive layer is provided by a laminating adhesive layer, and then laminated via the laminating adhesive layer, or an adhesion assistant by an anchor coating agent, etc. A layer, a melt-extruded resin layer, etc. are provided, and then a melt-extrusion laminating method or the like is performed by laminating via an adhesion assistant layer, a melt-extruded resin layer or the like using the anchor coat agent.

Next, in the present invention, an example of the packaged product according to the present invention, which is manufactured by using the lid material according to the present invention as described above and sealing a plastic molded container, for example, will be described. As a packaged product according to the invention, for example, a case where the lid product B _{1 according} to the present invention shown in FIG. 2 is used for manufacture will be described. First, as shown in FIG. For example, a plastic molding container 21 having a desired shape is manufactured by an ordinary molding method such as an injection molding method, thermoforming such as vacuum / pressure forming, blow molding, or the like, The plastic molded container 21 is filled with, for example, an article 22 such as a food or drink, and then, on the surface of the flange portion 23 constituting the opening of the plastic molded container 21, the above FIG. Indication The lid member B _1, the sheet - overlay is opposed surfaces of the Le layers (2, 2a), thereafter, the surface of the flange portion 23 forming the opening of the molded plastic container 21, in FIG. 2 The package product D according to the present invention manufactured by using the lid material B _{1 according} to the present invention by sealing the illustrated cover material B ₁ and sealing the opening of the plastic molding container 21 described above. It can be manufactured.
The above illustration is an example of the packaged product according to the present invention, and the present invention is not limited thereto. For example, the form of the plastic molded container is not shown, It can take any form according to the article to be filled and packaged, such as a conical shape, a pyramid shape, a cylindrical shape, a prism shape such as a triangle, a square, and the like, a spherical shape, and the like.
Of course, the package product according to the present invention can be manufactured in the same manner as described above by using the lid according to the present invention shown in FIG.

Next, in the present invention, the above-described easy-peel sealant, laminate material, lid material, plastic molded container, packaging product, etc. constituting the present invention will be described, and the production method thereof. First, in the present invention, the easy-peel sealant according to the present invention will be described. First, as a resin for forming the base material layer constituting the easy-peel sealant according to the present invention. Basically, any biodegradable resin can be used, but it is relatively soft, melts by heat, and interacts with the resin constituting the seal layer described later. It is preferable to use a resin having compatibility and excellent coextrusion moldability, and specifically, it is desirable to use polybutyl succinate as a biodegradable resin.
Thus, as the above-mentioned polybutyl succinate, for example, melt flow rate (MFR) is about 1.0 to 30.0 g / 10 minutes, preferably 3.0 to 20.0 g / 10. Polybutylene succinate having a density in the range of about 1.20 to 1.30 g / cm ³ and a melting point in the range of about 80 to 120 ° C. within a range of about 190 ° C. (2.16 kg). Can be used.
Thus, as the above polybutylene succinate, specifically, 1.4-butanediol and succinic acid are used as the main components, and they are aliphatic products obtained by direct dehydration polycondensation. A biodegradable polyester made of a polyester resin and having a physical property similar to that of a polyolefin resin can be used.
In addition, as another component, lactic acid etc. can be used, for example.
In the present invention, melt flow rate (MFR) is measured from a method based on JIS K6921 (190 ° C.), and the density is measured from a method based on JIS K7112.
The same applies hereinafter.

In the present invention, the polybutylene succinate can be used alone, but other biodegradable resins such as polylactic acid are added in an amount of about 1 to 30% by weight. Can also be used.
Thus, in the present invention, by adding other biodegradable resins such as polylactic acid as described above, it is effective in improving physical properties such as processability and rigidity.
In the present invention, when other biodegradable resins such as polylactic acid are added in an amount of 30% by weight or more, rigidity and the like are increased, which is not preferable because impact resistance and the like may be lowered. .
Further, in the present invention, the polybutylene succinate includes, in addition to the polylactic acid as described above, for example, as a plasticizer component, rubber components such as adipic acid ester, polyester rubber, and styrene rubber. Etc. can be added in small amounts.

Next, in the present invention, as the resin for forming the seal layer constituting the easy-peel sealant according to the present invention, for example, polybutylene succinate and polyethylene resin are used. A mixed resin having a blending ratio of the latter 10 to 50 parts by weight with respect to 50 to 90 parts by weight can be used.
As said polybutylene succinate, it is preferable to use the polybutylene succinate similar to the polybutylene succinate which comprises said base material layer.

In the present invention, as the polyethylene-based resin, for example, low density polyethylene, linear low density polyethylene, or an ethylene / α-olefin copolymer polymerized using a single site catalyst can be used.
Thus, in the present invention, as the polyethylene-based resin, a polyethylene-based resin having physical properties similar to the above-mentioned polybutylene succinate, excellent in melt tension and stretchability, etc., and having extrusion suitability described later is used. It is preferable to do.
In the present invention, specifically, as the low density polyethylene, for example, the density is about 0.910 to 0.929 g / cm ³ , and the melt flow rate (MFR) is 1.0 to 10 Low density polyethylene in the range of 0.0 g / 10 quantile can be used. Thus, the above low density polyethylene includes, as a monomer, ethylene, propylene, 1-butene, 1-pentene, 4-methyl-1-pentene, 1-hexene, 1-heptene, 1-octene. , 1-nonene, 1-decene, and other α-olefins, for example, high pressure method, slurry method, solution method, gas phase method, and other polymerization methods, ethylene alone, or An ethylene homopolymer obtained by copolymerizing ethylene and another olefin, a copolymer of ethylene and another olefin, or the like can be used.
In the present invention, the melt flow rate (MFR) is measured from a method based on JIS K6921, and the density is measured from a method based on JIS K7112.
The same applies hereinafter.

The linear low density polyethylene has a density of about 0.900 to 0.930 g / cm ³ and a melt flow rate (MFR) of about 0.50 to 10.0 g / 10 minutes. Linear low density polyethylene in the range can be used.
Thus, as the above linear low density polyethylene, monomers are ethylene, propylene, 1-butene, 1-pentene, 4-methyl-1-pentene, 1-hexene, 1-heptene, 1 Α-olefins such as octene, 1-nonene, 1-decene, etc. are used, for example, Ziegler-Natta system or Cr system catalyst is used, for example, low pressure method, slurry method, solution method A homopolymer of ethylene or ethylene and other olefins having no long chain branching by copolymerizing ethylene alone or ethylene and other olefins using a polymerization method such as gas phase method, etc. And a copolymer thereof can be used.

Further, the ethylene / α-olefin copolymer polymerized using the single site catalyst has a density of about 0.890 to 0.930 g / cm ³ , and a melt flow rate (MFR) Polyethylene in the range of 0.50 to 10.0 g / 10 quantile can be used.
Thus, the ethylene / α-olefin copolymer polymerized by using the above single site catalyst includes, for example, a catalyst by a combination of a metallocene complex and an alumoxane, such as a catalyst by a combination of zirconocene dichloride and methylalumoxane. That is, an ethylene / α-olefin copolymer obtained by copolymerizing ethylene and α / olefin using a metallocene catalyst (single site catalyst) can be used.
The above metallocene catalyst is also called a single-site catalyst because the current catalyst is called a multi-site catalyst with non-uniform active sites (below, the active sites are uniform). The metallocene catalyst has the same meaning as the single-site catalyst.)
Specifically, as an ethylene / α-olefin copolymer polymerized using a metallocene catalyst, trade names “Carnel” manufactured by Mitsubishi Chemical Corporation and trade names “Evolu” manufactured by Mitsui Petrochemical Industries, Ltd. -", Trade name" EXACT "manufactured by EXXON CHEMICAL, USA, trade name" Affinity ", trade name" DOF CHEMICAL ", USA An ethylene / α-olefin copolymer polymerized using a metallocene catalyst such as “ENGAGE” can be used.

The ethylene / α-olefin copolymer polymerized using the metallocene catalyst will be described in more detail. Specifically, for example, a catalyst comprising a combination of a metallocene transition metal compound and an organoaluminum compound, that is, a metallocene catalyst ( An ethylene / α-olefin copolymer obtained by copolymerizing ethylene and α / olefin can be used.
In addition, said metallocene catalyst may be supported and used for an inorganic substance. In the above, examples of the metallocene transition metal compound include a transition metal selected from group IVB, specifically, titanium (Ti), zirconium (Zr), hafnium (Hf), cyclopentadienyl group, substituted cyclohexane. 1 to 2 of a pentadienyl group, an indenyl group, a substituted indenyl group, a tetrahydroindenyl group, a substituted tetrahydroindenyl group, a fluoronyl group, and a substituted fluorenyl group, or two of these groups Those covalently bonded are bonded, and in addition, hydrogen atom, oxygen atom, halogen atom, alkyl group, alkoxy group, aryl group, acetylacetonate group, carbonyl group, nitrogen molecule, oxygen molecule, Those having a ligand such as a Lewis base, a substituent containing a silicon atom, and an unsaturated hydrocarbon can be used. .
In the above, as the organoaluminum compound, alkylaluminum, chain or cyclic aluminoxane, or the like can be used.
Here, as the alkylaluminum, for example, triethylaluminum, triisobutylaluminum, dimethylaluminum chloride, diethylaluminum chloride, methylaluminum dichloride, ethylaluminum dichloride, dimethylaluminum fluoride, diisobutylaluminum hydride, diethylaluminum hydride, ethylaluminum sesquichloride. Etc. can be used.
The chain or cyclic aluminoxane can be produced, for example, by bringing alkyl aluminum into contact with water.
For example, it can be produced by adding alkylaluminum at the time of polymerization and adding water later, or by reacting crystallization water of a complex salt or adsorbed water of an organic / inorganic compound with alkylaluminum.
Next, in the above, as the inorganic material for supporting the metallocene catalyst, for example, silica gel, zeolite, silicon earth or the like can be used.

Next, in the above, as the polymerization method, for example, various polymerization methods such as bulk polymerization, solution polymerization, suspension polymerization, and gas phase polymerization can be used.
In addition, the polymerization may be any method such as a batch method or a continuous method.
In the above, polymerization conditions are polymerization temperature, −100 to 250 ° C., polymerization time, 5 minutes to 10 hours, reaction pressure, normal pressure to 300 kg / cm ² .
Further, in the present invention, examples of the α-olefin that is a comonomer copolymerized with ethylene include propylene, 1-butene, 3-methyl-1-butene, 4-methyl-1-pentene, 1-hexene, 1-octene, decene, etc. can be used.
The above α · olefin fin may be used alone or in combination of two or more.
Moreover, the mixing ratio of the above-mentioned α-olefin is, for example, 1 to 50% by weight, preferably 10 to 30% by weight.
Therefore, in the present invention, the physical properties of the ethylene / α-olefin copolymer polymerized using the metallocene catalyst are, for example, molecular weight, 5 × 10 ^{3 to} 5 × 10 ⁶ , density, 0.890 to 0 930 g / cm ³ , melt flow rate [MFR], 0.1 to 50 g / 10 quantile.
In the present invention, the ethylene-α / olefin copolymer polymerized using the above metallocene catalyst includes, for example, an antioxidant, an ultraviolet absorber, an antistatic agent, an antiblocking agent, a lubricant (fatty acid amide, etc.). ), Flame retardants, inorganic or organic fillers, dyes, pigments and the like can be optionally added and used.

Next, in the present invention, as the resin forming the seal layer constituting the easy-peel sealant according to the present invention, the blending ratio of polybutylene succinate and polyethylene resin is as follows: It is possible to use a mixed resin obtained by mixing 10 to 50 parts by weight of the latter with respect to 50 to 90 parts by weight of the former, preferably 20 to 40 parts by weight of the latter with respect to 60 to 80 parts by weight of the former. it can.
In the above, if the polybutylene succinate is less than 50 parts by weight, it is not preferable because the seal strength may be lowered, and if it exceeds 90 parts by weight, -It is not preferable because the seal function is not achieved, the seal is completely sealed, and the seal strength is too high.
In addition, in the above, when the low density polyethylene resin is less than 10 parts by weight, the easy peel function is not achieved, the seal is completely sealed, and the seal strength is high. It is not preferable because it is too much, and if it exceeds 50 parts by weight, it is not preferable because the seal strength may be lowered.

  Next, in the present invention, the resin composition constituting the easy-peel sealant according to the present invention will be described in more detail. First, in the present invention, the easy-peel seal according to the present invention is described. As the resin composition for forming the base material layer constituting the runt, for example, the above polybutylene succinate is the main component of the vehicle. Improve and improve film processability, heat resistance, weather resistance, mechanical properties, dimensional stability, antioxidant properties, slip properties, mold release properties, flame retardancy, anti-mold properties, electrical properties, strength, etc. 1 to 2 or more of various plastic compounding agents and additives are optionally added for the purpose of quality control, and further, if necessary, a solvent, a diluent and the like are added and kneaded sufficiently to obtain the present invention. Forming a base material layer constituting the easy-peel sealant according to the present invention It can be prepared a resin composition.

  Next, as the resin composition for forming the seal layer constituting the easy-peel sealant according to the present invention, for example, polybutylene succinate and polyethylene resin are used in the former 50- The mixed resin composed of 10 to 50 parts by weight of the latter with respect to 90 parts by weight is used as the main component of the vehicle. Further, if necessary, when forming the film, for example, film processability, heat resistance, Various plastics for the purpose of improving and modifying weather resistance, mechanical properties, dimensional stability, antioxidant properties, slipping properties, mold release properties, flame retardancy, antifungal properties, electrical properties, strength, etc. 1 type or 2 or more types, such as a compounding agent and an additive, are added arbitrarily, Furthermore, a solvent, a diluent, etc. will be added if needed, and it will knead | knead well, and the easy-peel which concerns on this invention Preparing a resin composition for forming a seal layer constituting the luciferant; Kill.

  In the present invention, in each of the resin compositions constituting the above-described easy-peel sealant according to the present invention, examples of the plastic compounding agent and additive include, for example, a lubricant, a crosslinking agent, an oxidizing agent. Inhibitors, UV absorbers, light stabilizers, fillers, reinforcing agents, antistatic agents, flame retardants, flame retardants, foaming agents, antifungal agents, pigments, dyes, dispersants, surfactants, antiblocking agents, etc. In addition, a modifying resin or the like can also be used, and the addition amount is arbitrarily added from a very small amount to several tens weight% depending on the purpose. can do.

Furthermore, in the above, as the compounding agent or additive, specifically, a lubricant having its own lubricity and little migration in the resin can be used. For example, liquid paraffin, white Vaseline, petroleum wax, microcrystalline wax, montan wax, polyethylene wax and the like, higher fatty acids having 8 to 22 carbon atoms, or higher fatty acid aluminum, higher fatty acid calcium, higher fatty acid magnesium higher fatty acid zinc, higher fatty acid lithium Higher fatty acids or metal salts thereof, linear aliphatic monohydric alcohols having 8 to 18 carbon atoms, glycerin, sorbitol, propylene glycol, pentaerythritol, triethylene glycol, etc. Aliphatic alcohols, higher fatty acids having 4 to 22 carbon atoms and straight chain aliphatics having 8 to 18 carbon atoms Esters with polyhydric alcohols, butyl acetyl citrate, di-2-ethyl-hexyl adipate, azelaic acid-n-hexyl, ethanediol montanate, poly (1.3-butanediol adipate) ester, acetylricino Methyl ester, poly (1.3-butylene glycol, 1.4-butylene glycol, octyl alcohol adipic acid) ester, ester of sugar sugar sugar and fatty acid, hydrogenated Edible fats and oils, castor oil, spam acetyl wax, glycerides of acetylated monoglyceride sugar, ethylene bis-fatty acid amide represented by, for example, ethylene bisoleyl amide having 16 to 18 carbon atoms, higher fatty acid amide having 8 to 22 carbon atoms , Stearyl erucamide, erucic acid amide, oleyl palmitoamide, etc. 1 to 2 types of fatty acid amides, and others such as methylhydrodiene polysiloxane, dimethyl polysiloxane, methylphenyl polysiloxane, silicone oil jarodine such as polyoxyalkylene dimethylpolysiloxane, and glycerin ester of maleic acid modified rosin The above can be used.
In the present invention, among the lubricants as described above, erucic acid amide, ethylene bis oleyl amide, stearic acid amide, oleic acid amide, methylene bis stearic acid amide, etc., are themselves slippery, It is a very effective material.
As the addition amount of the above-mentioned lubricant, it is preferable to add at a ratio of about 0.08 wt% to 10.0 wt% with respect to the resin component.

In the present invention, other oxides such as aluminum oxide, magnesium oxide, silica, calcium oxide, titanium oxide, and zinc oxide; hydroxides such as aluminum hydroxide, magnesium hydroxide, and calcium hydroxide; Carbonates such as magnesium and calcium carbonate, sulfates such as calcium sulfate and barium sulfate, silicates such as magnesium silicate, aluminum silicate, calcium silicate and aluminosilicate, and others such as kaolin, talc and diatomaceous earth Anti-blocking agent based on inorganic compounds, or high density polyethylene, ultra-high molecular weight polyethylene having a molecular weight of 300000 or more, polypropylene, polycarbonate, polyamide, polyester, melamine resin, diallyl phthalate resin, acrylic resin, etc. Organic consisting of fine powder It one free of compounds based antiblocking agents can be added two or more.
The addition amount is preferably about 0.01 to 3% by weight with respect to the resin component.
In the present invention, as the resin composition for forming the seal layer constituting the easy-peel sealant according to the present invention, the above-mentioned polybutylene succinate and polyethylene resin are used. In addition to using a mixed resin having a blending ratio of 10 to 50 parts by weight of the latter with respect to 50 to 90 parts by weight of the former as a main component of the vehicle, in particular, as a compatibilizer or flexibility imparting agent for both, for example, styrene- It is preferable to add a polystyrene-based thermoplastic elastomer such as butadiene-styrene block copolymer (SBS), styrene-isoprene-styrene block copolymer (SIS), styrene-ethylene-butylene-styrene block copolymer (SEBS), etc. It is.
The addition amount is preferably about 10 to 20% by weight relative to the mixed resin component.

  Next, in the present invention, a method for producing an easy-peel sealant according to the present invention using each of the resin compositions as described above will be described. Each resin composition is prepared as described above, and then the resin composition is used, and the resin composition is co-extruded using, for example, a T-die co-extruder or an inflation co-extruder. Thus, the easy-peel sealant according to the present invention can be manufactured.

Thus, in the present invention, a specific method for producing an easy-peel sealant according to the present invention using each resin composition as described above will be described. In the present invention, first, As described above, the resin composition forming the base material layer constituting the easy-peel sealant according to the present invention, and the seal constituting the easy-peel sealant according to the present invention. And then using the two resin compositions, which are co-extruded using, for example, a T-die co-extruder, an inflation co-extruder, etc. A resin composed of a resin composition comprising at least two coextruded laminated films of a base material layer and a seal layer, and the base material layer comprising polybutyl succinate as a main component. The above-mentioned seal layer is composed of polybutyl succinate and poly Tylene-based resin is composed of a resin layer composed of a resin composition mainly composed of a mixture of 10 to 50 parts by weight of the latter with respect to the former 50 to 90 parts by weight, An easy-peel sealant comprising:
The above illustration is an example of the method for producing an easy-peel sealant according to the present invention, and the present invention is not limited to this.
In the present invention, as the easy-peel sealant according to the present invention, other materials are used depending on the purpose of use, application, etc., and these are optionally coextruded and laminated. A coextruded multilayer laminated resin film having a shape can be designed and manufactured.

Next, in the present invention, the film thickness of the easy-peel sealant according to the present invention is about 11 μm to 90 μm, preferably about 23 μm to 60 μm.
Thus, in the easy-peel sealant according to the present invention, as the film thickness of each layer constituting the easy-peel sealant, first, as the base material layer, the film thickness is 10 μm. ˜50 μm, preferably 20 μm to 40 μm, and the seal layer preferably has a thickness of 1 μm to 40 μm, preferably 3 μm to 20 μm.
In the above, as the film thickness of each layer constituting the easy-peel sealant according to the present invention, first, the film thickness of the base material layer is less than 10 μm from the viewpoint of film formation stability. If the film thickness exceeds 50 μm, the film formation stability is obtained, but it is not preferable for reasons such as material cost, weight reduction, and environmental problems (over spec).
Next, if the thickness of the seal layer is less than 1 μm, the peeling interface is beautiful, but the seal to the container having the wire seal projection flange becomes unstable. It is not preferable for the reason, and when the film thickness exceeds 40 μm, the seal to the container having the wire seal and the protruding flange is stabilized, but it is not preferable for the reason that the peeling interface disappears.

Thus, in the present invention, the base material layer constituting the above-described easy-peel sealant according to the present invention has the above-described structure, strength as a cover material, tear resistance, so-called The seal layer which constitutes the easy peel sealant according to the present invention has an effect such as greatly contributing to the waist. There are effects such as (peel strength), peel state (beauty of the peel interface), convenience, and the like.
Furthermore, the above-described easy-peel sealant according to the present invention has biodegradability, and even when discarded in the natural environment, it can be decomposed by microorganisms and the like to preserve the natural environment.

As is apparent from the above description, the easy-peel sealant according to the present invention has a performance as a heat-sealable resin layer that is excellent in hermeticity and easy to open. In addition, it acts as a heat-sealable material that constitutes packaging materials, and is biodegradable, and even if discarded in the natural environment, it is decomposed by microorganisms and the like to preserve the natural environment. To get.
Thus, the easy-peel sealant according to the present invention is permeable to other substrate sheets such as biodegradable plastic films, paper substrates, other oxygen gas or water vapor. Laminated with various forms by arbitrarily laminating one or more kinds of various base sheet such as a barrier base material, cellophane, woven or non-woven fabric, glass plate, etc. Manufacture, and thus, the laminated material can be applied to uses such as a packaging material constituting the lid material, and the like.
In particular, the easy-peel sealant according to the present invention is excellent in heat sealability as a heat seal material and can sufficiently satisfy its sealing property. In addition to satisfying the requirements of quality protection, extension of storage period, etc., it also has excellent easy-peel properties and has an easy-opening property that allows easy opening of lids, etc. when consumed. Furthermore, it is possible to form a very beautiful peeling interface in which no phenomenon such as stringing is observed at the peeling interface, and it can be applied to various plastic molding container lids and the like.

Next, in the present invention, the laminate material according to the present invention using the above-described easy-peel sealant according to the present invention will be described in more detail. First, as a method for producing the above laminate material, for example, Dry laminate lamination method or primer agent layer in which a desired substrate sheet such as a biodegradable plastic film is arbitrarily laminated via a primer agent layer or a laminating adhesive layer, etc. Alternatively, various types of laminating methods such as an extrusion laminating method in which various kinds of resins are melt-extruded through an anchor coating agent layer and the desired base sheet is arbitrarily laminated, and other laminating methods are used. The laminated material which consists of these forms can be manufactured.
Thus, in the present invention, the laminated material as described above is used as, for example, a packaging material for producing a lid material, or the like.

Thus, in the present invention, the base material sheet constituting the laminated material according to the present invention will be described. As the base material sheet, this constitutes a packaging bag or a lid material. Since it becomes a basic or auxiliary material, it has excellent properties in mechanical, physical, chemical, etc., excellent in strength, toughness, etc., and further, heat resistance, moisture resistance, pinhole resistance, A resin film or sheet excellent in puncture resistance, transparency, etc. can be used.
Specifically, for example, polycaprolactone (PCL), polybutylene succinate (PBS), polylactic acid (PLA), or aliphatic polyester such as poly-3-hydroxybutyric acid (PHB), aliphatic polyester and polyamide Copolymer (CPAE), aliphatic polyurethane containing an ester bond, vinyl polymer introduced with an ester bond, or aliphatic polyester containing a bond other than an ester bond such as an aliphatic polycarbonate , Blends of general-purpose plastics and aliphatic polyesters, starch-based natural polymers, water-soluble polyvinyl alcohol (PVA), pullulan, and other biodegradable resins, etc. A biodegradable resin film or sheet can be used.
In the present invention, as the biodegradable resin film or sheet, for example, one or more of the various biodegradable resins described above are used, and an extrusion method, a cast molding method, a T-die method, Using a film-forming method such as a cutting method, an inflation method, or the like, the above-mentioned various biodegradable resins are formed alone, or two or more types of biodegradable resins are used. The method of forming a multi-layer coextrusion film, further using two or more types of biodegradable resin, mixing the film before forming the film, etc. Various biodegradable resins produced by producing a film or a sheet and, if necessary, extending in a uniaxial or biaxial direction using, for example, a tenter method or a tuber method These films or sheets can be used.
In the present invention, the film thickness of various biodegradable resin films or sheets is preferably about 6 to 200 μm, more preferably about 9 to 100 μm.

In the present invention, as the above-mentioned base sheet, specifically, for example, polyester resin, polyamide resin, polyaramid resin, polyethylene resin, polypropylene resin, polycarbonate resin A film or sheet of various resins such as polyacetal resin, fluorine resin, and the like can be used.
Thus, as the resin film or sheet, any of an unstretched film or a stretched film stretched in a uniaxial direction or a biaxial direction can be used.
In the present invention, the thickness of the resin film or sheet may be a thickness that can be kept to the minimum necessary for strength, puncture resistance, rigidity, and the like. On the other hand, if it is too thin, the strength, puncture resistance, rigidity, etc. are lowered, which is not preferable.
In the present invention, for the reasons described above, about 10 μm to 100 μm, preferably about 12 μm to 50 μm is most desirable.
Thus, in the present invention, among the above-described resin films or sheets, in particular, a biaxially stretched polyester resin having a thickness of about 9 to 30 μm, a biaxially stretched polyamide resin, or a biaxial It is preferable to use a film of stretched polypropylene resin.

Further, in the present invention, as the base material sheet laminated with the easy-peel sealant according to the present invention, in addition to the resin film or sheet as described above, for example, moldability For example, a paper substrate such as a highly sized bleached or unbleached paper substrate, or pure white roll paper, kraft paper, paperboard, processed paper, etc. Can be laminated.
In the above, as the paper substrate constituting the paper layer, it is desirable to use a material having a basis weight of about 80 to 600 g / m ² , preferably a basis weight of about 100 to 450 g / m ² .
Of course, in the present invention, the paper base material constituting the paper layer and various resin films or sheets as the base film mentioned above can be used in combination.

Next, in the present invention, as another base material sheet laminated with the above-described easy peel sealant according to the present invention, for example, the property of shielding light such as sunlight, or A material having the property of not allowing permeation of gas such as water vapor, water, oxygen, and the like can be used. This may be a single base material or a composite base material formed by combining two or more base materials. Etc.
Specifically, for example, a resin film having a deposited film of an inorganic oxide such as silicon oxide or aluminum oxide having a barrier property, low density polyethylene having a barrier property such as water vapor or water, medium density polyethylene, high Films or sheets of resin such as density polyethylene, linear low density polyethylene, polypropylene, ethylene-propylene copolymer, polyvinyl alcohol having gas barrier properties, saponified ethylene-vinyl acetate copolymer, nylon MXD6 Films or sheets of resin, etc., and various colored resin films or sheets having light-shielding properties obtained by adding a colorant such as a pigment to the resin and adding a desired additive to knead to form a film Can be used.
These materials can be used alone or in combination. The thickness of the film or sheet is arbitrary, but is usually about 5 μm to 300 μm, more preferably about 10 μm to 100 μm.

Further, in the above, a deposited film of inorganic oxide having a thickness of about 50 mm to 2000 mm can be used.
Examples of the resin film that supports the vapor deposition film include polyester film, polyamide film, polyolefin film, polyvinyl chloride film, polycarbonate film, polyvinylidene chloride film, polyvinyl alcohol film, and ethylene-acetic acid. A vinyl copolymer saponified film, etc. can be used.

In the above, as the inorganic oxide constituting the vapor-deposited film layer of the inorganic oxide, for example, silicon oxide (SiO _x ), aluminum oxide, indium oxide, tin oxide, zirconium oxide or the like may be used. it can.
Furthermore, in the present invention, the inorganic oxide may be a mixture of silicon monoxide and silicon dioxide, or a mixture of silicon oxide and aluminum oxide.
Thus, in the present invention, the inorganic oxide thin film layer is formed by forming a deposited film by a vacuum deposition method such as an ion beam method or an electron beam method, a sputtering method, or the like. be able to.
In the above, the thickness of the thin film layer of the inorganic oxide is usually preferably about 50 to 2000 mm in order to obtain a sufficient barrier property, and particularly preferably about 100 to 1500 mm in the present invention. .
In the above, when the thickness of the inorganic oxide thin film layer exceeds 1500 mm, particularly when it exceeds 2000 mm, the inorganic oxide thin film layer is liable to crack and the like, thereby reducing the barrier property. It is not preferable because it is problematic and the material cost becomes high, and less than 50 mm, particularly less than 100 mm, it is difficult to recognize the effect, which is not preferable.

Next, in the present invention, as the other base material sheet laminated on the easy-peel sealant according to the present invention, there is little adsorption of a fragrance component contained in the contents to be filled and packaged. It is possible to use a resin film or sheet having a high aroma retaining property and a property that does not cause a taste change or a strange odor.
Specifically, for example, polyacrylic resin, polymethacrylic resin, polyacrylonitrile resin, polymethacrylonitrile resin, polystyrene resin, polycarbonate resin, polyethylene terephthalate resin or the like Resin obtained by copolymerizing or modifying a part of ethylene component and / or terephthalate component with other di- or higher polyhydric alcohol component or dicarboxylic acid component, or polyester such as polyethylene naphthalate resin Use films or sheets of resins such as resins, polyamide resins, saponified ethylene-vinyl acetate copolymers, polyvinyl alcohol resins, polyvinyl chloride resins, polyvinylidene chloride resins, etc. Can do.
Therefore, in the present invention, among the above-described resin films or sheets, it is desirable to use a resin film or sheet having a fragrance retaining property and a barrier property against oxygen gas or water vapor. Specifically, for example, a saponified ethylene-vinyl acetate copolymer, a polyamide-based resin, a polyacrylonitrile-based resin, a polyester-based resin, or the like is used as a resin film or a film having excellent aroma retention and barrier properties. -It is desirable to use

Furthermore, in the present invention, since packaging containers, lids, etc. are usually subjected to severe physical and chemical conditions, the packaging materials constituting the packaging containers have severe packaging suitability. And various conditions such as anti-deformation strength, drop impact strength, pinhole resistance, heat resistance, sealability, quality maintenance, workability, hygiene, etc. are required. In, a material that satisfies the various conditions as described above can be arbitrarily selected and used.
Specifically, for example, low density polyethylene, medium density polyethylene, high density polyethylene, linear low density polyethylene, polypropylene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, ionomer resin, ethylene-acrylic acid Ethyl copolymer, ethylene-acrylic acid or methacrylic acid copolymer, methylpentene polymer, polybutene resin, polyvinyl chloride resin, polyvinyl acetate resin, polyvinylidene chloride resin, vinyl chloride-vinylidene chloride copolymer Polymer, poly (meth) acrylic resin, polyacrylonitrile resin, polystyrene resin, acrylonitrile-styrene copolymer (AS resin), acrylonitrile-butadiene-styrene copolymer (ABS resin), polyester resin, Polyamide resin, polycarbonate Known resins such as neat resins, polyvinyl alcohol resins, saponified ethylene-vinyl acetate copolymers, fluorine resins, diene resins, polyacetal resins, polyurethane resins, nitrocellulose, etc. Any resin film or sheet can be selected and used.
In addition, for example, a film such as cellophane, a synthetic paper, or the like can be used.
In the present invention, the above-described film or sheet may be any of unstretched, uniaxially or biaxially stretched.
The thickness is arbitrary, but can be selected from a range of several μm to 300 μm.
Furthermore, in the present invention, the film or sheet may be a film having any property such as extrusion film formation, inflation film formation, and coating film.

In the present invention, in the laminated material according to the present invention, an arbitrary printed pattern layer can be provided on the front surface, the back surface, or both surfaces of any material constituting the laminated material.
Thus, in the present invention, as the printed pattern layer, for example, a desired printed pattern made of, for example, characters, figures, symbols, patterns, etc. is printed on the substrate film, A printed pattern layer can be formed.
Thus, as the above-mentioned printed pattern layer, specifically, first, an ink vehicle composed of one or more kinds of resin or the like is a main component, and if necessary, a plasticizer and a stabilizer. , One or more additives such as antioxidants, light stabilizers, ultraviolet absorbers, curing agents, cross-linking agents, lubricants, antistatic agents, fillers, etc. are optionally added, and further dyes, A colorant such as a pigment is added, and the ink composition is prepared by sufficiently kneading with a solvent, a diluent, etc., and then the ink composition is used, for example, gravure printing, offset printing, letterpress printing, screen printing A desired printing pattern consisting of characters, figures, symbols, patterns, etc. is printed on the base film using a printing method such as printing, transfer printing, flexographic printing, etc. The printed pattern layer can be formed

  In the above, as the vehicle for ink, known ones such as sesame oil, drill oil, soybean oil, hydrocarbon oil, rosin, rosin ester, rosin modified resin, shellac, alkyd resin, phenol resin, malein Acid resins, natural resins, hydrocarbon resins, polyvinyl chloride resins, polyvinyl acetate resins, polystyrene resins, polyvinyl butyral resins, acrylic or methacrylic resins, polyamide resins, polyester resins, polyurethane resins Use one or more of epoxy resin, urea resin, melamine resin, amino alkyd resin, phenol resin, nitrocellulose, ethylcellulose, chlorinated rubber, cyclized rubber, etc. Can do.

Next, in the present invention, the laminating adhesive layer constituting the laminated material according to the present invention will be described. As the laminating adhesive layer constituting the laminating adhesive layer, for example, poly A vinyl acetate adhesive, a homopolymer such as ethyl acrylate, butyl, 2-ethylhexyl ester, or a polyacrylate adhesive composed of a copolymer of these with methyl methacrylate, acrylonitrile, styrene, etc., Cyanoacrylate adhesives, ethylene copolymer adhesives consisting of copolymers of ethylene and vinyl acetate, ethyl acrylate, acrylic acid, methacrylic acid, etc., cellulose adhesives, polyester adhesives Agent, polyamide adhesive, polyimide adhesive, amino resin adhesive made of urea resin or melamine resin, etc. Phenolic resin adhesives, epoxy adhesives, polyurethane adhesives, reactive (meth) acrylic adhesives, rubber adhesives such as chloroprene rubber, nitrile rubber, styrene-butadiene rubber, silicone-based adhesives Adhesives such as adhesives, alkali metal silicates, inorganic adhesives made of low-melting glass, and the like can be used.
The composition system of the above-mentioned adhesive may be any composition form such as an aqueous type, a solution type, an emulsion type, and a dispersion type, and the properties thereof are film / sheet type, powder type, solid type, etc. Any form may be used, and the bonding mechanism may be any form such as a chemical reaction type, a solvent volatilization type, a heat melting type, and a hot pressure type.
Thus, the above adhesive can be applied by, for example, a roll coating method, a gravure roll coating method, a kiss coating method, a coating method or the like, or a printing method. The coating amount is preferably about 0.1 to 10 g / m ² (dry state).

Next, in the present invention, the anchor coat agent layer constituting the laminated material according to the present invention will be described. As the anchor coat agent constituting such an anchor coat agent layer, for example, alkyl titane is used. Various water-based or oil-based anchor coating agents such as organic titanium-based, isocyanate-based, polyethyleneimine-based, polyptadiene-based, etc. can be used.
The above-mentioned anchor coating agent can be coated by using a coating method such as a roll coat, a gravure roll coat, a kiss coat, and the like. The amount is preferably 0.1 to 5 g / m ² (dry state).

Examples of the melt-extruded resin layer in the above extrusion lamination method include, for example, polyethylene resins, polypropylene resins, acid-modified polyethylene resins, acid-modified polypropylene resins, ethylene-acrylic acid or methacrylic acid copolymers. , Thermoplastic resins such as sarin resin, ethylene-vinyl acetate copolymer, polyvinyl acetate resin, ethylene-acrylic acid ester or methacrylic acid ester copolymer, polystyrene resin, polyvinyl chloride resin, etc. 1 type (s) or 2 or more types can be used.
In the above extrusion laminating method, in order to obtain stronger adhesive strength, for example, lamination can be performed through an anchor coating agent layer such as the above-described anchor coating agent. .

In the present invention, examples of the primer layer include a polyurethane resin, a polyester resin, a polyamide resin, an epoxy resin, a phenol resin, a (meth) acrylic resin, and a polyvinyl acetate resin. A primer layer can be formed using a resin composition having a main component of a vehicle such as a polyolefin resin such as polyethylene or polypropylene, or a copolymer or modified resin thereof, a cellulose resin, or the like. .
In the present invention, for example, a primer coating layer is formed by coating using a coating method such as roll coating, gravure rolling coating, kiss coating, etc. Therefore, the coating amount is preferably about 0.1 to 10 g / m ² (dry state).
Moreover, in this invention, when performing said lamination | stacking, if necessary, pre-treatments, such as a corona treatment and an ozone treatment, can be given to a film.

Next, in the present invention, the laminated material according to the present invention as described above can also be used as a lid material for sealing the opening of a plastic molded container having a desired shape.
Thus, in the present invention, various plastic molded containers that use and seal the lid according to the present invention include, for example, polyethylene resins, polypropylene resins, and ethylene-propylene copolymers as molding resins. Polyacrylic or polymethylmethacrylic resin, polyvinyl chloride resin, vinyl chloride-vinylidene chloride copolymer, polyacrylonitrile resin, polystyrene resin, acrylonitrile-styrene copolymer (AS resin), acrylonitrile- Butadiene-styrene copolymer (ABS resin), polyester resin, polyamide resin, polycarbonate resin, fluorine resin, diene resin, polyacetal resin, polyurethane resin, nitrocellulose, Use other molding resins, for example, extrusion molding, injection Shape, blow - molding, foam molding, thermoforming such as vacuum-pressure, cast molding, compression molding, it is possible to use plastic molded container of molded variety with forming method other like.

In the present invention, for example, the above-mentioned aliphatic polyesters such as polycaprolactone (PCL), polybutylene succinate (PBS), polylactic acid (PLA), or poly-3-hydroxybutyric acid (PHB), fat Copolymers of aliphatic polyesters and polyamides (CPAE), aliphatic polyurethanes containing ester bonds, vinyl polymers introduced with ester bonds, or bonds other than ester bonds such as aliphatic polycarbonates. Using various kinds of biodegradable resins such as aliphatic polyesters, blends made of general-purpose plastics and aliphatic polyesters, natural polymers such as starches, water-soluble polyvinyl alcohol (PVA), pullulan, etc. This is, for example, extrusion molding, injection molding, blow molding, foam molding, vacuum / air pressure thermoforming, cast molding, etc. Compression molding, various plastic molding containers obtained by molding using a molding method other like can be used.
In this case, the plastic molded container itself is made of a biodegradable resin, and is itself biodegradable. Even if it is discarded in the natural environment, it can be decomposed by microorganisms and preserve the natural environment. .
In the present invention, the heat sealing method between the lid member and the plastic molding container may be, for example, a bar seal, a rotary roll seal, a belt seal, an impulse seal, or a high frequency seal. -It can be performed by a known method such as sealing or ultrasonic sealing.

Further, in the present invention, the contents to be filled and packaged in a plastic molded container include, for example, food and drink, fruit juice, juice, drinking water, sake, cooked food, marine product, frozen food, meat product, boiled food, rice cake Various foods and beverages such as liquid soup, seasonings, etc., chemicals such as adhesives, adhesives, liquid detergents, cosmetics, pharmaceuticals, miscellaneous goods such as chemical warmers, photosensitive materials, etc. The article can be filled and packaged.
Thus, in the present invention, the easy-peel sealant according to the present invention is excellent in heat sealability as a heat seal material, and can sufficiently satisfy its sealing performance. In addition to satisfying the requirements of protecting the quality of the contents, extending the storage period, etc., it is also excellent in easy peel and can be easily opened when consumed. It has an easy-opening property, and can form a very beautiful peeling interface where no phenomenon such as stringing is observed at the peeling interface, and can be applied to various plastic molding container lids, etc. Furthermore, it is biodegradable, and even if it is discarded in the natural environment, it is decomposed by microorganisms and the like and can preserve the natural environment.
In addition, the package according to the present invention uses a biodegradable resin as a material constituting the lid material, the plastic molded container, and the like. It has degradability, and even if it is discarded in the natural environment, it can be decomposed by microorganisms and the like to preserve the natural environment.
Next, the present invention will be described more specifically with reference to examples.

(1). First, the following resin compositions (a) and (b) were prepared.
(I). Resin composition constituting the first layer Polybutylene succinate (trade name, GSP1a-AZ91T, density = 1.26 g / cm ³ , melting point = 112 ° C.) 100 as a base resin layer The resin composition was prepared by sufficiently kneading the parts by weight.
(B). Resin composition constituting the second layer Polybutylene succinate (trade name, GSP1a-AZ91T, density = 1.26 g / cm ³ , melting point = 112 ° C., manufactured by Mitsubishi Chemical Corporation) as a cohesive failure layer) 60 weight Parts, ethylene / α-olefin copolymer (Dow Chemical Co., Ltd., trade name, affinity-PF1140G, density = 0.899 g / cm ³ , melt flow rate, MFR = 1.6 g / 10 min) 40 parts by weight Were sufficiently kneaded to prepare a resin composition.
(2). Next, using the resin composition prepared above, using a two-type two-layer top-blown air-cooled inflation co-extrusion film forming machine, the layer of the resin composition of (A) is 40 μm, ( (Ii) Easy-peel sealant according to the present invention comprising two types and two layers of co-extruded inflation film, each of which is formed by coextrusion of a layer of the resin composition to 10 μm. Manufactured.
(3). Next, on the corona-treated surface of the 20 μm-thick polylactic acid stretched film, a two-component curable polyurethane laminating adhesive (main agent: polyester polyol, curing agent: aliphatic isocyanate) is gravure-coated. Coating is carried out using a coating method to form a laminating adhesive layer having a thickness of 3.0 g / m ² (dry), and then, on the surface of the laminating adhesive layer, Using the above-produced easy-peel sealant, the corona discharge treatment was applied to the surface of the base material layer composed of the resin layer of the resin composition (i) having a thickness of 40 μm, and then the corona The processing surfaces were opposed to each other and then laminated, and then both were dry laminated to produce a laminate according to the present invention.
(4). Next, using the laminate material produced above, first, a cup-shaped molded container made of polylactic acid resin is filled with water, and then the surface of the flange portion of the opening is made of the laminate material produced above. The lid material is overlapped with its easy-peel sealant faces facing each other, and then the cover material is sealed from the flat seal at a seal temperature of 200 ° C., 1 kg / cm ² and 1 second. -A packaged product filled with water in a cup-shaped molded container was produced.
The packaged product manufactured above did not show any leakage of contents or tearing of the lid.
Furthermore, when the drop test of the packaged product from 1 m was performed three times, no tearing, leakage, etc. were observed.
The packaged product had good easy-openability (easy-peel property), and no tearing, tearing, stringing, etc. were observed during peeling.
Also, when projecting seal from a cup container having a line seal (ring seal) or projecting flange performed at a high pressure was performed, the seal layer did not break down and very stable pinning occurred. -It showed the behavior.

(1). First, the following resin compositions (a) and (b) were prepared.
(I). Resin composition constituting the first layer Polybutylene succinate (trade name, GSP1a-AZ91T, density = 1.26 g / cm ³ , melting point = 112 ° C.) 100 as a base resin layer The resin composition was prepared by sufficiently kneading the parts by weight.
(B). Resin composition constituting second layer Polybutylene succinate (trade name, GSP1a-AZ91T, density = 1.26 g / cm ³ , melting point = 112 ° C., manufactured by Mitsubishi Chemical Corporation)) as a cohesive failure layer) 70 weight Parts, ethylene / α-olefin copolymer (manufactured by Dow Chemical Co., Ltd., trade name, affinity-PF1140G, density = 0.899 g / cm ³ , melt flow rate, MFR = 1.6 g / 10 min) 30 parts by weight Were sufficiently kneaded to prepare a resin composition.
(2). Next, using the resin composition prepared above, using a two-type two-layer top-blown air-cooled inflation co-extrusion film forming machine, the layer of the resin composition of (A) is 40 μm, ( (Ii) Easy-peel sealant according to the present invention comprising two types and two layers of co-extruded inflation film, each of which is formed by coextrusion of a layer of the resin composition to 10 μm. Manufactured.
(3). Next, on the corona-treated surface of the 20 μm-thick polylactic acid stretched film, a two-component curable polyurethane laminating adhesive (main agent: polyester polyol, curing agent: aliphatic isocyanate) is gravure-coated. Coating is carried out using a coating method to form a laminating adhesive layer having a thickness of 3.0 g / m ² (dry), and then, on the surface of the laminating adhesive layer, Using the above-produced easy-peel sealant, the corona discharge treatment was applied to the surface of the base material layer composed of the resin layer of the resin composition (i) having a thickness of 40 μm, and then the corona The processing surfaces were opposed to each other and then laminated, and then both were dry laminated to produce a laminate according to the present invention.
(4). Next, using the laminate material produced above, first, a cup-shaped molded container made of polylactic acid resin is filled with water, and then the surface of the flange portion of the opening is made of the laminate material produced above. The lid material is overlapped with its easy-peel sealant faces facing each other, and then the cover material is sealed from the flat seal at a seal temperature of 200 ° C., 1 kg / cm ² and 1 second. -A packaged product filled with water in a cup-shaped molded container was produced.
The packaged product manufactured above did not show any leakage of contents or tearing of the lid.
Furthermore, when the drop test of the packaged product from 1 m was performed three times, no tearing, leakage, etc. were observed.
The packaged product had good easy-openability (easy-peel property), and no tearing, tearing, stringing, etc. were observed during peeling.
Also, when projecting seal from a cup container having a line seal (ring seal) or projecting flange performed at a high pressure was performed, the seal layer did not break down and very stable pinning occurred. -It showed the behavior.

(1). First, the following resin compositions (a) and (b) were prepared.
(I). Resin composition constituting the first layer Polybutylene succinate (trade name, GSP1a-AZ91T, density = 1.26 g / cm ³ , melting point = 112 ° C.) 100 as a base resin layer The resin composition was prepared by sufficiently kneading the parts by weight.
(B). Resin composition constituting second layer Polybutylene succinate (trade name, GSP1a-AZ91T, density = 1.26 g / cm ³ , melting point = 112 ° C., manufactured by Mitsubishi Chemical Corporation)) as a cohesive failure layer) 80 weight Parts, ethylene / α-olefin copolymer (manufactured by Dow Chemical Co., Ltd., trade name, affinity-PF1140G, density = 0.899 g / cm ³ , melt flow rate, MFR = 1.6 g / 10 min) 20 parts by weight Were sufficiently kneaded to prepare a resin composition.
(2). Next, using the resin composition prepared above, using a two-type two-layer top-blown air-cooled inflation co-extrusion film forming machine, the layer of the resin composition of (A) is 40 μm, ( (Ii) Easy-peel sealant according to the present invention comprising two types and two layers of co-extruded inflation film, each of which is formed by coextrusion of a layer of the resin composition to 10 μm. Manufactured.
(3). Next, on the corona-treated surface of the 20 μm-thick polylactic acid stretched film, a two-component curable polyurethane laminating adhesive (main agent: polyester polyol, curing agent: aliphatic isocyanate) is gravure-coated. Coating is carried out using a coating method to form a laminating adhesive layer having a thickness of 3.0 g / m ² (dry), and then, on the surface of the laminating adhesive layer, Using the above-produced easy-peel sealant, the corona discharge treatment was applied to the surface of the base material layer composed of the resin layer of the resin composition (i) having a thickness of 40 μm, and then the corona The processing surfaces were opposed to each other and then laminated, and then both were dry laminated to produce a laminate according to the present invention.
(4). Next, using the laminate material produced above, first, a cup-shaped molded container made of polylactic acid resin is filled with water, and then the surface of the flange portion of the opening is made of the laminate material produced above. The lid material is overlapped with its easy-peel sealant faces facing each other, and then the cover material is sealed from the flat seal at a seal temperature of 200 ° C., 1 kg / cm ² and 1 second. -A packaged product filled with water in a cup-shaped molded container was produced.
The packaged product manufactured above did not show any leakage of contents or tearing of the lid.
Furthermore, when the drop test of the packaged product from 1 m was performed three times, no tearing, leakage, etc. were observed.
The packaged product had good easy-openability (easy-peel property), and no tearing, tearing, stringing, etc. were observed during peeling.
Also, when projecting seal from a cup container having a line seal (ring seal) or projecting flange performed at a high pressure was performed, the seal layer did not break down and very stable pinning occurred. -It showed the behavior.

(1). First, the following resin compositions (a) and (b) were prepared.
(I). Resin composition constituting the first layer Polybutylene succinate (trade name, GSP1a-AZ91T, density = 1.26 g / cm ³ , melting point = 112 ° C.) 100 as a base resin layer The resin composition was prepared by sufficiently kneading the parts by weight.
(B). Resin composition constituting second layer Polybutylene succinate (trade name, GSP1a-AZ91T, density = 1.26 g / cm ³ , melting point = 112 ° C., manufactured by Mitsubishi Chemical Corporation)) as a cohesive failure layer) 70 weight And an ethylene / α-olefin copolymer polymerized using a single site catalyst (metallocene catalyst) (trade name, Evolu-SP2020, density = 0.916 g / cm ³ , manufactured by Mitsui Sumitomo Chemical Co., Ltd.), melt flow Late, MFR = 1.5 g / 10 min) and 30 parts by weight were sufficiently kneaded to prepare a resin composition.
(2). Next, using the resin composition prepared above, using a two-type two-layer top-blown air-cooled inflation co-extrusion film forming machine, the layer of the resin composition of (A) is 40 μm, ( (Ii) Easy-peel sealant according to the present invention comprising two types and two layers of co-extruded inflation film, each of which is formed by coextrusion of a layer of the resin composition to 10 μm. Manufactured.
(3). Next, on the corona-treated surface of the 20 μm-thick polylactic acid stretched film, a two-component curable polyurethane laminating adhesive (main agent: polyester polyol, curing agent: aliphatic isocyanate) is gravure-coated. Coating is carried out using a coating method to form a laminating adhesive layer having a thickness of 3.0 g / m ² (dry), and then, on the surface of the laminating adhesive layer, Using the above-produced easy-peel sealant, the corona discharge treatment was applied to the surface of the base material layer composed of the resin layer of the resin composition (i) having a thickness of 40 μm, and then the corona The processing surfaces were opposed to each other and then laminated, and then both were dry laminated to produce a laminate according to the present invention.
(4). Next, using the laminate material produced above, first, a cup-shaped molded container made of polylactic acid resin is filled with water, and then the surface of the flange portion of the opening is made of the laminate material produced above. The lid material is overlapped with its easy-peel sealant faces facing each other, and then the cover material is sealed from the flat seal at a seal temperature of 200 ° C., 1 kg / cm ² and 1 second. -A packaged product filled with water in a cup-shaped molded container was produced.
The packaged product manufactured above did not show any leakage of contents or tearing of the lid.
Furthermore, when the drop test of the packaged product from 1 m was performed three times, no tearing, leakage, etc. were observed.
The packaged product had good easy-openability (easy-peel property), and no tearing, tearing, stringing, etc. were observed during peeling.
Also, when projecting seal from a cup container having a line seal (ring seal) or projecting flange performed at a high pressure was performed, the seal layer did not break down and very stable pinning occurred. -It showed the behavior.

(1). First, the following resin compositions (a) and (b) were prepared.
(I). Resin composition constituting the first layer Polybutylene succinate (trade name, GSP1a-AZ91T, density = 1.26 g / cm ³ , melting point = 112 ° C.) 100 as a base resin layer The resin composition was prepared by sufficiently kneading the parts by weight.
(B). Resin composition constituting second layer Polybutylene succinate (trade name, GSP1a-AZ91T, density = 1.26 g / cm ³ , melting point = 112 ° C., manufactured by Mitsubishi Chemical Corporation)) as a cohesive failure layer) 70 weight Parts, ethylene / α-olefin copolymer (trade name, affinity-PF1140G, density = 0.899 g / cm ³ , melt flow rate, MFR = 1.6 g / 10 min, manufactured by Dow Chemical Co., Ltd.) 30 parts by weight And 10 parts by weight of a styrene-ethylene-butylene-styrene copolymer (SEBS, manufactured by JSR Corporation, trade name, Dynalon HSB8630, density = 0.92 g / cm ³ , melt flow rate, MFR = 14 g / 10 min) Was sufficiently kneaded to prepare a resin composition.
(2). Next, using the resin composition prepared above, using a two-type two-layer top-blown air-cooled inflation co-extrusion film forming machine, the layer of the resin composition of (A) is 40 μm, ( (Ii) Easy-peel sealant according to the present invention comprising two types and two layers of co-extruded inflation film, each of which is formed by coextrusion of a layer of the resin composition to 10 μm. Manufactured.
(3). Next, on a corona-treated surface of a 20 μm-thick stretched polylactic acid film (trade name, Pargreen LC, manufactured by Tosero Co., Ltd.), a two-component curable polyurethane laminating adhesive (main agent: polyester polyol) And an adhesive layer for laminating having a thickness of 3.0 g / m ² (dry) is coated by coating using a gravure roll coating method. Thereafter, the base material comprising the resin layer made of the resin composition of (ii) having a thickness of 40 μm, using the above-described easy peel sealant on the surface of the adhesive layer for laminating. After the corona discharge treatment was performed on the surface of the layer, the corona treatment surfaces were made to face each other, and then both layers were dry laminated to produce a laminate according to the present invention.
(4). Next, using the laminate material produced above, first, a cup-shaped molded container made of polylactic acid resin is filled with water, and then the surface of the flange portion of the opening is made of the laminate material produced above. The lid material is overlapped with its easy-peel sealant faces facing each other, and then the cover material is sealed from the flat seal at a seal temperature of 200 ° C., 1 kg / cm ² and 1 second. -A packaged product filled with water in a cup-shaped molded container was produced.
The packaged product manufactured above did not show any leakage of contents or tearing of the lid.
Furthermore, when the drop test of the packaged product from 1 m was performed three times, no tearing, leakage, etc. were observed.
The packaged product had good easy-openability (easy-peel property), and no tearing, tearing, stringing, etc. were observed during peeling.
Also, when projecting seal from a cup container having a line seal (ring seal) or projecting flange performed at a high pressure was performed, the seal layer did not break down and very stable pinning occurred. -It showed the behavior.

(1). First, the following resin compositions (a) and (b) were prepared.
(I). Resin composition constituting the first layer Polybutylene succinate (trade name, GSP1a-AZ91T, density = 1.26 g / cm ³ , melting point = 112 ° C.) 100 as a base resin layer The resin composition was prepared by sufficiently kneading the parts by weight.
(B). Resin composition constituting second layer Polybutylene succinate (trade name, GSP1a-AZ91T, density = 1.26 g / cm ³ , melting point = 112 ° C., manufactured by Mitsubishi Chemical Corporation)) as a cohesive failure layer) 70 weight Parts, ethylene / α-olefin copolymer (trade name, affinity-PF1140G, density = 0.899 g / cm ³ , melt flow rate, MFR = 1.6 g / 10 min, manufactured by Dow Chemical Co., Ltd.) 30 parts by weight And 20 parts by weight of a styrene-ethylene-butylene-styrene copolymer (SEBS, manufactured by JSR Corporation, trade name, Dynalon HSB8630, density = 0.92 g / cm ³ , melt flow rate, MFR = 14 g / 10 min) Was sufficiently kneaded to prepare a resin composition.
(2). Next, using the resin composition prepared above, using a two-type two-layer top-blown air-cooled inflation co-extrusion film forming machine, the layer of the resin composition of (A) is 40 μm, ( (Ii) Easy-peel sealant according to the present invention comprising two types and two layers of co-extruded inflation film, each of which is formed by coextrusion of a layer of the resin composition to 10 μm. Manufactured.
(3). Next, on a corona-treated surface of a 20 μm-thick stretched polylactic acid film (trade name, Pargreen LC, manufactured by Tosero Co., Ltd.), a two-component curable polyurethane laminating adhesive (main agent: polyester polyol) And an adhesive layer for laminating having a thickness of 3.0 g / m ² (dry) is coated by coating using a gravure roll coating method. Thereafter, the base material comprising the resin layer made of the resin composition of (ii) having a thickness of 40 μm, using the above-described easy peel sealant on the surface of the adhesive layer for laminating. After the corona discharge treatment was performed on the surface of the layer, the corona treatment surfaces were made to face each other, and then both layers were dry laminated to produce a laminate according to the present invention.
(4). Next, using the laminate material produced above, first, a cup-shaped molded container made of polylactic acid resin is filled with water, and then the surface of the flange portion of the opening is made of the laminate material produced above. The lid material is overlapped with its easy-peel sealant faces facing each other, and then the cover material is sealed from the flat seal at a seal temperature of 200 ° C., 1 kg / cm ² and 1 second. -A packaged product filled with water in a cup-shaped molded container was produced.
The packaged product manufactured above did not show any leakage of contents or tearing of the lid.
Furthermore, when the drop test of the packaged product from 1 m was performed three times, no tearing, leakage, etc. were observed.
The packaged product had good easy-openability (easy-peel property), and no tearing, tearing, stringing, etc. were observed during peeling.
Also, when projecting seal from a cup container having a line seal (ring seal) or projecting flange performed at a high pressure was performed, the seal layer did not break down and very stable pinning occurred. -It showed the behavior.

(1). First, the following resin compositions (a) and (b) were prepared.
(I). Resin composition constituting the first layer Polybutylene succinate (trade name, GSP1a-AZ91T, density = 1.26 g / cm ³ , melting point = 112 ° C.) 100 as a base resin layer The resin composition was prepared by sufficiently kneading the parts by weight.
(B). Resin composition constituting second layer Polybutylene succinate (trade name, GSP1a-AZ91T, density = 1.26 g / cm ³ , melting point = 112 ° C., manufactured by Mitsubishi Chemical Corporation)) as a cohesive failure layer) 70 weight And an ethylene / α-olefin copolymer polymerized using a single site catalyst (metallocene catalyst) (manufactured by Nippon Polyethylene Co., Ltd., trade name, Novatec LC522, density = 0.923 g / cm ³ , melt flow rate, MFR = 3.7 g / 10 min) and 30 parts by weight were sufficiently kneaded to prepare a resin composition.
(2). Next, using the resin composition prepared above, using a two-type two-layer top-blown air-cooled inflation co-extrusion film forming machine, the layer of the resin composition of (A) is 40 μm, ( (Ii) Easy-peel sealant according to the present invention comprising two types and two layers of co-extruded inflation film, each of which is formed by coextrusion of a layer of the resin composition to 10 μm. Manufactured.
(3). Next, on the corona-treated surface of the 20 μm-thick polylactic acid stretched film, a two-component curable polyurethane laminating adhesive (main agent: polyester polyol, curing agent: aliphatic isocyanate) is gravure-coated. Coating is carried out using a coating method to form a laminating adhesive layer having a thickness of 3.0 g / m ² (dry), and then, on the surface of the laminating adhesive layer, Using the above-produced easy-peel sealant, the corona discharge treatment was applied to the surface of the base material layer composed of the resin layer of the resin composition (i) having a thickness of 40 μm, and then the corona The processing surfaces were opposed to each other and then laminated, and then both were dry laminated to produce a laminate according to the present invention.
(4). Next, using the laminate material produced above, first, a cup-shaped molded container made of polylactic acid resin is filled with water, and then the surface of the flange portion of the opening is made of the laminate material produced above. The lid material is overlapped with its easy-peel sealant faces facing each other, and then the cover material is sealed from the flat seal at a seal temperature of 200 ° C., 1 kg / cm ² and 1 second. -A packaged product filled with water in a cup-shaped molded container was produced.
The packaged product manufactured above did not show any leakage of contents or tearing of the lid.
Furthermore, when the drop test of the packaged product from 1 m was performed three times, no tearing, leakage, etc. were observed.
The packaged product had good easy-openability (easy-peel property), and no tearing, tearing, stringing, etc. were observed during peeling.
Also, when projecting seal from a cup container having a line seal (ring seal) or projecting flange performed at a high pressure was performed, the seal layer did not break down and very stable pinning occurred. -It showed the behavior.

(Experimental example)
The following physical properties were measured for the laminates according to the present invention manufactured using the easy-peel sealant according to the present invention manufactured in Examples 1 to 7 above.
(1). Measurement of Film Thickness This is about the laminate material according to the present invention manufactured using the easy-peel sealant according to the present invention manufactured in Examples 1 to 7, manufactured by Sony Corporation, μ- Measured with a meter.
(2). Measurement of peel strength This is for a laminated material according to the present invention manufactured using the easy peel sealant according to the present invention manufactured in Examples 1 to 7, from a heat seal machine. The surface of the easy peel sealant of the cover material constituting the stack material according to the present invention sealed at 200 ° C. for 2 seconds with an air pressure of 3 kg / cm ² is attached to the plastic molding container. The T-shaped peel strength was measured under the conditions of a width of 15 mm and 300 mm / min.
The measurement results are shown in Table 1 below.

(Table 1)
┌ ────┬──────┬────────┐ │ │ Film thickness │ Peel strength │ │ │ (μm) │ (N / 15mm) │ ├────┼ ──────┼────────┤ │Example 1│ 73 │ 10.1 │ ├────┼──────┼────────┤ │ Example 2│ 73 │ 10.1 │ ├────┼──────┼────────┤ │Example 3│ 73 │ 10.7 │ ├────┼─ ─────┼────────┤ │Example 4│ 73 │ 9.5 │ ├────┼──────┼───────┤ │ Implementation Example 5│ 73 │ 8.0 │ ├────┼──────┼────────┤ │Example 6│ 73 │ 7.8 │ ├────┼── ────┼────────┤ │Example 7│ 73 │ 8.3 │ └────┴──────┴────── --┘

  As is clear from the results shown in Table 1 above, the laminated material according to the present invention manufactured using the easy peel sealant according to the present invention has a heat seal property, -Excellent in peelability and the like.

The easy-peel sealant according to the present invention is excellent in heat-sealability as a heat-seal material and can sufficiently satisfy its sealing property, and the quality of the contents In addition to satisfying demands such as protection of the product, extension of the storage period, etc., it also has excellent easy-peel properties and has an easy-opening property that can easily open the lid material when consumed. Furthermore, it is possible to form a very beautiful peeling interface in which no phenomenon such as stringing is observed at the peeling interface, and it can be applied to various plastic molding container lids.
Furthermore, the above-described easy-peel sealant according to the present invention has biodegradability, and even when discarded in the natural environment, it can be decomposed by microorganisms and the like to preserve the natural environment.

It is a schematic sectional drawing which shows the layer structure of the example about the easy-peel sealant which concerns on this invention. It is a schematic sectional drawing which shows the layer structure of the example about the cover material which concerns on this invention manufactured using the easy-peel sealant which concerns on this invention. It is a schematic sectional drawing which shows the layer structure of the example about the cover material which concerns on this invention manufactured using the easy-peel sealant which concerns on this invention. It is a schematic sectional drawing which shows the layer structure of the example about the packaged product which concerns on this invention which consists of the plastic molding container based on this invention manufactured using the cover material based on this invention shown in FIG.

Explanation of symbols

A Easy peel sealant B Laminated material B ₁ Lid material C Laminated material C ₁ Lid material D Packaged product 1 Base material layer 1a Resin layer 2 Seal layer 2a Resin layer 3 Co-extruded laminated film 3a Coextruded laminated film of both resin layers 11 Base sheet 12 Print pattern 21 Plastic molding container 22 Article 23 Flange part

Claims (9)

A resin comprising at least a base sheet and a two-layer coextrusion laminated film of a base layer and a seal layer, and the base layer is a resin mainly composed of polybutylene succinate The resin layer is composed of a composition, and the above-mentioned seal layer is composed of a polybutylene succinate and a polyethylene resin from a blending ratio of 10 to 50 parts by weight of the latter with respect to 50 to 90 parts by weight of the former. A resin layer composed of a resin composition containing a mixed resin as a main component, and a lid material obtained by laminating an easy peel sealant made of a coextruded laminated film of both resin layers, and the base material layer and the seal layer described above Is composed of melt flow rate (MFR), 1.0 to 30.0 g / 10 min, density, 1.20 to 1.30 g / cm ³ , melting point, 80 to 120 ° C. and, further, the lid material, the A package comprising a structure in which the surface of the peel peel sealant is overlapped with the surface of the flange portion constituting the opening of the plastic molding container, and both are sealed and sealed. . 2. The package according to claim 1, wherein the base sheet comprises a biodegradable resin film or sheet. The package according to any one of claims 1 to 2, wherein the base sheet is a polylactic acid resin film or sheet. Polyethylene resin, low density polyethylene, any of the above claims 1-3, characterized in that it consists of a linear low density polyethylene or an ethylene · alpha-olefin copolymer polymerized using a single site catalyst 1 The package described in the item. Polybutylene succinate - mixing ratio of the bets and the polyethylene resin, any of the above claims 1-4, characterized in that it consists of blending ratio of the latter 20 to 40 parts by weight with respect to the former 60 to 80 parts by weight The package described in item 1. The package according to any one of claims 1 to 5 , wherein the base material layer has a thickness of 10 µm to 50 µm. The package according to any one of claims 1 to 6 , wherein the seal layer has a thickness of 1 to 40 µm. The package according to any one of claims 1 to 7 , wherein the plastic molded container is formed of a biodegradable resin molded container. The package according to any one of claims 1 to 7 , wherein the plastic molding container is a polylactic acid resin molding container.

Images