JP7437629B2 - Clothing process sheet - Google Patents

Description

The present invention is a clothing processing sheet that is temporarily used during the manufacturing of clothing or the production of clothing fabrics, and in particular, it melts and bonds a stretchable material such as a thermoplastic elastomer resin and a woven or knitted fabric by heat press processing. The present invention relates to a process sheet for clothing that has excellent heat resistance and suitable release properties.

High elasticity has traditionally been required for sportswear and the like from the viewpoint of athletic functionality, and breathability has also been required from the viewpoint of releasing sweat and body heat during exercise. Clothing fabrics here basically consist of an outer material made of woven or knitted material, and an adhesive interlining that is mainly placed on the back side of the outer material to improve the strength of the fabric, retain its shape, form it, and bond the fabrics together. If necessary, a lining may be provided on the surface opposite to the surface of the adhesive interlining that is in contact with the outer material. They are bonded together and integrated by hot melt bonding. In order to produce clothing such as sportswear with excellent elasticity and breathability as mentioned above, it is of course essential that the outer material (and lining) have excellent elasticity and breathability, but adhesive interlining In order to meet these demands, thermoplastic elastomer resin with excellent elasticity is molded into a mesh sheet shape as an adhesive interlining for sportswear, and it has excellent elasticity and breathability. Adhesive interlinings have been used in recent years. By using a fabric consisting of an adhesive interlining made of thermoplastic elastomer resin molded into a mesh sheet shape and a outer material (and lining material) made of a woven or knitted fabric with excellent elasticity and breathability, it has excellent elasticity and breathability. It becomes possible to produce clothing with excellent quality.

The method of heat-melting bonding an adhesive interlining made of a stretchable material such as a thermoplastic elastomer resin mesh sheet and an outer material made of a woven or knitted fabric is to first laminate each layer, and then heat the laminate. Usually, a method is envisaged in which the material is sandwiched between two metal rolls of a roll press machine or two metal plates of a heat press machine and hot press processed to melt and bond the layers. However, mesh sheets made of thermoplastic elastomer resin are extremely stretchable and flexible, and have no stiffness at all, so if you try to laminate them with the outer material as is, they tend to wrinkle and distort, making it extremely difficult to work with. there were. Furthermore, since mesh sheets made of thermoplastic elastomer resin exhibit adhesive properties when heated, depending on the processing conditions, they may be exposed to heat against the metal roll of a heat roll press machine or the metal plate of a heat press machine during heat press processing. There was also a problem in that the plastic elastomer resin mesh sheet adhered, and the thermoplastic elastomer resin mesh sheet and the outer material could not be properly fused and bonded, resulting in defective fusion bonding.

In order to solve these problems, we have developed a temporary clothing production sheet called a garment process sheet, which is a heat-resistant paper or synthetic resin film with a release layer that has heat resistance and release properties. A sheet used to improve workability is produced, and then a mesh sheet made of thermoplastic elastomer resin previously produced is laminated by pressure on the release layer of this clothing process sheet using a thermocompression roll 6 (Fig. 3). ) or by directly molding a thermoplastic elastomer resin mesh sheet on the release layer of the clothing processing sheet by various known methods, the clothing processing sheet and the thermoplastic elastomer resin mesh sheet can be combined. The above-mentioned problem was solved by creating a laminate, further laminating the outer material on the side of the thermoplastic elastomer resin mesh sheet of this laminate, and then hot pressing them (see Figure 4). Methods to do so have been attempted in recent years.

If a general release paper, such as one coated with, impregnated with, or laminated with paraffin, olefin wax, or olefin resin as a release layer component on the surface of a paper base material, is used as a process sheet for clothing, Because the mold layer has poor heat resistance, when fabric is produced by melt-bonding the outer material and the adhesive interlining made of a mesh sheet made of thermoplastic elastomer resin, the adhesive interlining and the mold release layer are melt-mixed or melt-bonded. When the fabric is released from the clothing process sheet, the release layer may peel off along with the fabric or the paper base material may be destroyed. was there.

Furthermore, when a release paper for general pressure-sensitive adhesive sheets, such as a release agent containing a silicone component is applied to the base material, is used as a processing sheet for clothing, an adhesive core made of a outer material and a thermoplastic elastomer resin mesh sheet is used. Even if there are no particular problems when melt-bonding the lining and the thermoplastic elastomer resin mesh sheet by hot pressing (see Figure 4), there may be problems when melt-bonding the lining and the thermoplastic elastomer resin mesh sheet (see Figure 6). In this case, the silicone component of the release paper transferred to the thermoplastic elastomer resin mesh sheet inhibits the melt adhesion between the thermoplastic elastomer resin mesh sheet and the lining, and the adhesive strength between the thermoplastic elastomer resin mesh sheet and the lining is sufficient. This could lead to poor melt adhesion.

The present invention was made in view of this situation, and the object of the present invention is to provide a processing sheet for clothing that does not use a silicone component in the release layer and has excellent heat resistance and appropriate release properties. This is the main issue.

In order to solve these problems, the present inventor conducted studies and found that a release layer is provided on at least one side of a heat-resistant base material, and the release layer contains styrene (meth)acrylate containing a carboxyl group. If the mold release layer contains a crosslinked product of a copolymer resin and zinc, and the static contact angle of water on the surface of the mold release layer is in the range of 60 degrees or more and 110 degrees or less, it has excellent heat resistance and appropriate mold release properties. It was discovered that a process sheet for clothing can be obtained.

Furthermore, as a result of studies conducted by the present inventor, it was found that by using styrene/acrylic acid alkyl ester/methacrylic acid copolymer resin as the styrene/(meth)acrylate copolymer resin used in the release layer, it was possible to improve the manufacturing process for clothing. We have found that it is more preferable to simultaneously impart excellent heat resistance and appropriate mold release properties to the sheet.

Additionally, as a result of studies conducted by the present inventors, it has been found that lubricants other than silicone-based compounds with a melting point in the range of 90°C or higher and 180°C or lower are added to the mold release layer of processing sheets for clothing based on carboxyl groups in terms of solid content. By containing in the range of 10 parts by mass or less per 100 parts by mass of styrene/(meth)acrylate copolymer resin containing, the mold releasability is improved without substantially reducing the heat resistance of the processing sheet for clothing. We found that it is possible to do so.

By using the process sheet for clothing of the present invention, it is possible to melt and bond a woven or knitted fabric with a stretchable material such as a mesh sheet made of thermoplastic elastomer resin, which is extremely stretchable, flexible, and has no stiffness, by heat press processing. It is possible to suppress the occurrence of wrinkles and distortions in the fabric, and there is no problem of poor melt adhesion between the stretchable material and the woven or knitted fabric after heat press processing, and the fabric can be used for clothing. When releasing the mold from the process sheet, problems such as peeling of the release layer of the process sheet for clothing from the base material and destruction of the base material do not occur.

1 is a schematic cross-sectional view showing an example of an embodiment of a process sheet for clothing according to the present invention. 1 is a schematic cross-sectional view showing an example of an embodiment of a process sheet for clothing according to the present invention. FIG. 1 is a schematic cross-sectional view showing an example of an embodiment in which a stretchable adhesive interlining (stretchable material: thermoplastic elastomer resin mesh sheet) is laminated on the clothing processing sheet of the present invention. A schematic cross section showing an example of an embodiment in which a stretchable adhesive interlining (stretchable material: thermoplastic elastomer resin mesh sheet) and an outer material are heat-pressed using the clothing process sheet of the present invention. figure. A schematic cross-sectional view showing an example of an embodiment in which a stretchable fabric (outer material + stretchable adhesive interlining) produced using the clothing process sheet of the present invention is released from the clothing process sheet. . FIG. 2 is a schematic cross-sectional view showing an example of an embodiment in which a stretchable fabric (outer material + stretchable adhesive interlining) and a lining are heat-pressed. FIG. 1 is a schematic cross-sectional view showing an example of an embodiment of a stretchable fabric (outer material + stretchable adhesive interlining + lining).

The process sheet 3 for clothing according to the present invention basically has a structure in which a release layer 2 is provided on at least one surface of a heat-resistant base material 1, as shown in FIG. Moreover, as shown in FIG. 2, if necessary, a sealing layer or a primer layer 4 may be provided between the heat-resistant layer base material 1 and the mold release layer 2.

The clothing processing sheet 3 of the present invention is basically used for bonding a stretchable adhesive interlining 5 made of a stretchable material such as a thermoplastic elastomer resin and an outer material 7 made of a woven or knitted fabric. . As an example of how to use the clothing process sheet 3 of the present invention, first, as shown in FIG. A laminate is produced by pressing and laminating the layers using a thermocompression roll 6 or the like to avoid wrinkles or distortion, and then, as shown in FIG. 4, the elastic adhesive interlining 5 of the laminate described above is prepared. By further laminating the outer fabric 7 on the side of the outer layer and performing heat press processing with the laminate sandwiched between the metal plates 8 of a heat press processing machine, the interlayer between the elastic adhesive interlining 5 and the outer fabric 7 is are melt-bonded and integrated to produce a stretchable fabric 9a. The produced stretchable fabric 9a is released from the clothing process sheet 3 at an appropriate timing in the process after being cooled after hot pressing, as shown in FIG. 5. In addition, when releasing the clothing process sheet 3 and the stretchable fabric 9a, if the heat resistance and mold release properties of the clothing process sheet 3 to be used are not sufficient, the garment process sheet 3 may be removed during the mold release process. The force required to prevent peeling of the release layer 2 of the sheet 3 from the heat-resistant base material 1 or breakage of the heat-resistant base material 1, or to release the garment process sheet 3 from the stretchable fabric 9a. Since this is too large, the problem of poor mold release occurs, such as poor mold releasability and unstable force during mold release, resulting in decreased workability. In addition, if the mold releasability between the clothing process sheet 3 and the stretchable fabric 9a is too good, the process before the process of releasing the clothing process sheet 3 and the stretchable fabric 9a from the mold In the process, a problem arises in that the stretchable fabric 9a is unintentionally released from the clothing process sheet 3.

Furthermore, if necessary, when providing a lining 10 on the opposite side of the outer surface of the stretchable fabric 9a, as shown in FIG. By laminating the lining 10 on the side of the fabric 5 and performing heat press processing with the laminate sandwiched between the metal plates 8 of a heat press processing machine, the interlayer between the stretchable adhesive interlining 5 and the outer fabric 10 is created. By melt-bonding and integrating, a stretchable fabric 9b as shown in FIG. 7 is produced.

<<Each component of clothing process sheet>>
Next, details of each component of the clothing process sheet in the present invention are shown below.

<Heat-resistant base material>
The heat-resistant base material used in the present invention is not particularly limited as long as it has high heat resistance, strength, and flexibility, and conventionally known materials can be appropriately selected and used. Specifically, the base material melts or shrinks significantly in the temperature range of 150 to 180 degrees Celsius, which is the processing temperature when heat press processing woven or knitted fabrics with thermoplastic elastomer resin (assuming styrene elastomer or olefin elastomer). It is preferable to select materials that do not cause deformation or deformation, such as various paper materials, various metal foils, heat-resistant polyamide resin films, polyamide-imide films, polyimide films, polyethylene terephthalate films (PET films), polybutylene terephthalate films (PBT), etc. Films), polyetheretherketone films, PTFE films, various heat-resistant engineered plastic films, and various heat-resistant nonwoven fabrics may be mentioned, but are not limited to these. Among the above-mentioned materials, it is particularly preferable to use various paper materials and polyethylene terephthalate film from the viewpoint of cost and ease of handling. Further, if necessary, the surface of the heat-resistant base material may be subjected to corona treatment or adhesion-promoting treatment, or a sealing layer or a primer layer may be provided.

The thickness of the heat-resistant base material is not particularly limited, and as long as it is in the range of 4 μm or more and 200 μm or less, taking into consideration the material that constitutes the heat-resistant base material as appropriate so that the strength, flexibility, and thermal conductivity are appropriate. However, it is more preferable that the thickness be in the range of 12 μm or more and 100 μm or less.

<Release layer>
The clothing processing sheet of the present invention can temporarily hold a flexible and stretchable material such as thermoplastic elastomer resin during the process of producing stretchable fabric, and can further be heat-pressed. Even when heat and pressure are applied to the stretchable material and the woven or knitted fabric, problems such as melt adhesion or melt mixing with the stretchable material do not occur, and the stretchable fabric is temporarily retained even after heat press processing. It must be possible to do this, and at the same time, it is required that the stretchable dough can be smoothly released from the mold if necessary. Therefore, at least one surface of the heat-resistant base material of the processing sheet for clothing of the present invention has appropriate mold releasability, and it is necessary to prevent various defects from occurring and the mold releasability from changing due to hot press processing. It is necessary to provide a mold release layer with excellent heat resistance.

The mold release layer of the clothing processing sheet of the present invention is provided on at least one surface of the heat-resistant base material, and the mold release layer is formed by crosslinking a styrene/(meth)acrylate copolymer resin containing a carboxyl group with zinc. It is characterized in that the static contact angle of water on the surface of the mold release layer is in the range of 60 degrees or more and 110 degrees or less.

The release layer of the present invention uses a styrene/(meth)acrylate copolymer resin containing a carboxyl group as a resin component, and a styrene/(meth)acrylate copolymer resin containing a carboxyl group and a zinc compound. After coating a paint consisting of a mixture of It becomes possible to form a mold release layer with Therefore, the release layer of the present invention is basically characterized by containing a crosslinked product of a styrene/(meth)acrylate copolymer resin containing at least a carboxyl group and zinc.

The styrene/(meth)acrylate copolymer resin containing a carboxyl group used as the resin component of the release layer of the present invention is a styrene monomer and at least one of various acrylic ester monomers and methacrylic ester monomers. It is a copolymer resin that essentially contains a monomer containing a carboxyl group as a reactive group. Note that the above-mentioned "(meth)acrylate" is a technical term that includes acrylate and methacrylate.

As the styrene monomer constituting the carboxyl group-containing styrene/(meth)acrylate copolymer resin, it is preferable to use styrene or alkylstyrene, and examples of the alkylstyrene include α-methylstyrene and β-methylstyrene. , α-ethylstyrene, α-butylstyrene, α-hexylstyrene, 2-methylstyrene, 3-methylstyrene, 4-methylstyrene, 4-ethylstyrene, etc., but are not limited to these groups. One or more of them can be selected and used, and styrene, α-methylstyrene, etc. can be used for the styrene/(meth)acrylic copolymer resin having a carboxyl group of the present invention. More preferred.

The content of the styrene monomer in all the monomers constituting the carboxyl group-containing styrene/(meth)acrylate copolymer resin is preferably in the range of 10 to 70% by mass, preferably in the range of 20 to 60% by mass. things are more preferable. If the content of the styrene monomer in the carboxyl group-containing styrene/(meth)acrylate copolymer resin is within the above range, the release layer coating will have good heat resistance, water resistance, and film formability. .

The various (meth)acrylate monomers constituting the above-mentioned carboxyl group-containing styrene/(meth)acrylate copolymer resin are those in which the terminal of the ester bond is composed of a linear or branched alkyl group (meth) ) It is particularly preferable to use acrylic acid alkyl esters. Examples of such (meth)acrylic acid alkyl esters include methyl (meth)acrylate, ethyl (meth)acrylate, propyl (meth)acrylate, and (meth)acrylate. ) Isopropyl acrylate, n-butyl (meth)acrylate, t-butyl (meth)acrylate, isobutyl (meth)acrylate, pentyl (meth)acrylate, hexyl (meth)acrylate, heptyl (meth)acrylate , octyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, and other known various (meth)acrylates, but are not limited to these, and one or more of these groups may be selected. In the present invention, it is preferable to use an alkyl group in which the end of the ester bond is a linear or branched alkyl group having 4 or more and 8 or less carbon atoms. It is more preferable in order to maintain good heat resistance, mold releasability, water resistance, film formability, coating film strength, etc. of the film. Note that the above-mentioned "(meth)acrylic acid" is a technical term that includes acrylic acid and methacrylic acid.

The content of the (meth)acrylate monomer in all the monomers constituting the styrene/(meth)acrylate copolymer resin containing a carboxyl group is preferably in the range of 10 to 80% by mass, preferably 20 to 70% by mass. It is more preferable that the range is within the range. If the content of the (meth)acrylate monomer in the styrene/(meth)acrylate copolymer resin containing a carboxyl group is within the above range, the release properties, heat resistance, water resistance, and The coating film has good strength.

Examples of the carboxyl group-containing monomer constituting the carboxyl group-containing styrene/(meth)acrylate copolymer resin include carboxyl group-containing monomers such as acrylic acid, methacrylic acid, itaconic acid, maleic acid, and fumaric acid. However, it is more preferable to use acrylic acid or methacrylic acid.

The content of the monomer containing a carboxyl group in all the monomers constituting the styrene/(meth)acrylate copolymer resin containing a carboxyl group is preferably in the range of 1 to 30% by mass. It is more preferable that the range is within the range. If the content of the carboxyl group-containing monomer in the carboxyl group-containing styrene/(meth)acrylate copolymer resin is within the above range, the release properties and water resistance of the release layer coating will be significantly reduced. Moreover, the crosslinking reaction makes it possible to sufficiently improve heat resistance and coating film strength.

As the styrene/(meth)acrylate copolymer resin containing a carboxyl group composed of the various monomers mentioned above, styrene/acrylic is preferred from the viewpoint of release properties, heat resistance, and coating strength of the release layer coating film. It is more preferable to use an acid alkyl ester/methacrylic acid copolymer resin, and further, the terminal of the ester bond of the acrylic acid alkyl ester monomer is composed of a linear or branched alkyl group having 4 to 8 carbon atoms. It is most preferable to use a Specific examples of such resins include styrene/butyl acrylate/methacrylic acid copolymer resin, styrene/hexyl acrylate/methacrylic acid copolymer resin, styrene/heptyl acrylate/methacrylic acid copolymer resin, and styrene/acrylic acid copolymer resin. Octyl acrylate/methacrylic acid copolymer resin, styrene/2-ethylhexyl acrylate/methacrylic acid copolymer resin, α-styrene/butyl acrylate/methacrylic acid copolymer resin, styrene/α-styrene/butyl acrylate/methacrylic acid copolymer resin Polymer resin, styrene/butyl acrylate/hexyl acrylate/methacrylic acid copolymer resin, styrene/butyl acrylate/heptyl acrylate/methacrylic acid copolymer resin, styrene/butyl acrylate/octyl acrylate/methacrylic acid copolymer resin Examples include, but are not limited to, styrene, butyl acrylate, 2-ethylhexyl acrylate, methacrylic acid copolymer resin, etc., and it is possible to select and use one or more from these groups. .

The amount of the styrene/(meth)acrylate copolymer resin containing carboxyl groups used in the release layer of the present invention is not particularly limited, but it must be at least 70% by mass of the entire release layer in terms of solid content. is preferable, and more preferably 80% by mass or more. If the amount of the styrene/(meth)acrylate copolymer resin containing carboxyl groups used in the release layer is within the above range, the release property, heat resistance, and film strength of the release layer coating will be good. It is.

The state of the paint of the styrene/(meth)acrylate copolymer resin containing carboxyl groups used in the release layer of the present invention is not particularly limited, but the molecular weight can be freely designed, and high molecular weight It is preferable to use it in the form of an aqueous paint such as an emulsion or dispersion from the viewpoint of being able to turn the molecule into a paint and from the viewpoint of ease of crosslinking between the carboxyl group and zinc.

The release layer of the present invention has extremely excellent heat resistance due to the carboxyl groups contained in the above-mentioned carboxyl group-containing styrene/(meth)acrylate copolymer resin being crosslinked and intermolecularly bonded with zinc. It is characterized by developing coating film strength.

Zinc used for crosslinking the mold release layer of the present invention is a divalent metal, and is usually added when forming the mold release layer in the form of a metal crosslinking agent consisting of a so-called zinc compound such as zinc acetate, zinc oxide, or zinc lactate. be done. Among these, it is more preferable to use zinc oxide from the viewpoint of stability and water resistance of the coating film when the metal crosslinking agent remains unreacted. In addition, when using a metal crosslinking agent made of a zinc compound in a water-based paint, it is preferable to use it in the form of an ammonia aqueous solution of zinc ammonium carbonate prepared by reacting a zinc compound and ammonium bicarbonate in aqueous ammonia.

The amount of zinc added in the release layer of the present invention is not particularly limited, but is 1 part by mass or more and 15 parts by mass or more based on 100 parts by mass of the styrene/(meth)acrylate copolymer resin containing carboxyl groups in terms of solid content. The following ranges are preferred, and a range of 5 parts by mass or more and 10 parts by mass or less is preferred. If the amount of zinc added in the release layer is within the above range, it will be possible to sufficiently crosslink the styrene/(meth)acrylate copolymer resin containing carboxyl groups, improving the heat resistance of the release layer and the coating film. It is possible to greatly improve the strength.

In order to further improve the mold release properties, if necessary, various known lubricants other than silicone compounds with a melting point of 90°C or higher and 180°C or lower are added to the mold release layer of the present invention in terms of solid content. It may be added in an amount of 10 parts by mass or less, more preferably 5 parts by mass or less, based on 100 parts by mass of the styrene/(meth)acrylate copolymer resin containing a carboxyl group. Such lubricants include hydrocarbon lubricants such as Fuscher-Tropsch wax, polyethylene wax, and polypropylene wax, palmitic acid amide, stearic acid amide, methylol stearic acid amide, methylene bis stearic acid amide, ethylene bis stearic acid amide, and ethylene. Examples include, but are not limited to, fatty acid amide-based lubricants such as bisoleic acid amide, metal soap-based lubricants such as zinc stearate, calcium stearate, and zinc laurate; in particular, metal soap-based lubricants or fatty acid amide-based lubricants are used. It is more preferable to do so.

If the melting point of the lubricant added to the release layer of the present invention is within the above range, the release layer and thermoplastic elastomer resin will not separate after hot pressing of a stretchable material such as a thermoplastic elastomer resin and a woven or knitted fabric. It has the effect of further improving the moldability, and if the amount of lubricant added is within the above range, it is possible to improve the mold release property of the mold release layer without substantially reducing the heat resistance of the mold release layer. .

The release layer of the present invention may contain polymers such as carbodiimide crosslinking agents or oxazoline crosslinking agents, if necessary, in order to improve the heat resistance of the release layer and at the same time improve adhesion to the heat-resistant substrate. A crosslinking agent may also be added. The added polymeric crosslinking agent crosslinks the carboxyl groups of the styrene/(meth)acrylate copolymer resin containing carboxyl groups to improve the heat resistance and coating strength of the release layer, and particularly improves the film strength. It has the effect of greatly improving the adhesion to heat-resistant substrates that have poor adhesion, such as substrates.

The amount of the carbodiimide crosslinking agent or oxazoline crosslinking agent added to the mold release layer of the present invention is not particularly limited, but the styrene/(meth)acrylate containing carboxyl group added to the mold release layer in terms of solid content The range is preferably 1 part by mass or more and 10 parts by mass or less, and more preferably the range of 1 part by mass or more and 5 parts by mass or less, based on 100 parts by mass of the copolymer resin. If the amount of carbodiimide-based crosslinking agent or oxazoline-based crosslinking agent is within the above range, it is possible to improve the heat resistance of mold releasability and the strength of the coating film, and also to improve the adhesion to heat-resistant substrates such as film substrates. It is also possible to improve sexual performance. If the amount of the carbodiimide-based crosslinking agent or oxazoline-based crosslinking agent is below the lower limit of the above range, the expected performance improvement of the above-mentioned release layer will not be achieved sufficiently; If the amount of the agent added exceeds the upper limit of the above range, the heat resistance and mold release properties of the release layer tend to decrease.

The release layer of the present invention needs to have properties that do not melt-adhere or melt-mix with stretchable materials such as thermoplastic elastomer resins during hot press processing. It is required that the material itself has high heat resistance. As a result of the inventor's investigation, the release layers of two clothing processing sheets were faced to each other and heat pressed for 20 minutes at a processing temperature of 150°C and a pressure of 1.5 MPa using a heat press processing machine. In this case, it has been found that at least the required quality required for the process sheet for clothing of the present invention can be satisfied if the release layers are not melt-adhered or melt-mixed. Furthermore, even when the processing temperature under the hot press processing conditions is changed to 180° C., it is more preferable that the release layers do not melt-adhere or melt-mix.

When using a clothing process sheet for clothing production, etc., various problems may occur during clothing production if the releasing force between the mold release layer and the thermoplastic elastomer resin is too large or too small. Therefore, the release layer of the present invention is required to have appropriate mold release properties, and as a result of the inventor's studies on mold release properties, it was found that the process sheet for clothing of the present invention has appropriate mold release properties. For this purpose, it is preferable that the static contact angle of water on the surface of the release layer of the clothing process sheet before hot pressing etc. is in the range of 60 degrees or more and 110 degrees or less, and preferably in the range of 70 degrees or more and 105 degrees or less. It turns out that one thing is better than the other. When the static contact angle of water on the surface of the release layer is less than 60 degrees, the garment processing sheet after heat press processing has elasticity consisting of a stretchable material such as a thermoplastic elastomer resin and an outer material such as a woven or knitted fabric. When releasing the fabric from the mold, the force required to release the mold becomes too large, which tends to impair workability during garment production, and conversely, the static contact angle of water on the surface of the release layer exceeds 110 degrees. After a stretchable material such as a thermoplastic elastomer resin is laminated or directly molded onto the release layer of a clothing processing sheet, the stretchable material easily falls off from the clothing processing sheet at an unintended timing. There is a tendency for defects to occur more easily when manufacturing clothing.

The thickness of the release layer of the present invention is not particularly limited, but it is preferably in the range of 1 μm or more and 30 μm or less, and more preferably in the range of 3 μm or more and 15 μm or less. Similarly, the amount of adhesion of the release layer is preferably in the range of 1 g/m ² or more and 30 g/m ² or less, and in the range of 3 g/m ² or more and 15 g/m ² or less, in terms of the mass of the release layer after drying. Something is better. When the thickness and the amount of adhesion of the mold release layer are within the above ranges, the coating film strength of the mold release layer is sufficient and the mold release performance of the mold release layer is also sufficiently exhibited. If the thickness or adhesion amount of the release layer is below the lower limit of the above range, the coating strength of the release layer will be insufficient, and the coating may be damaged during the clothing production process using the clothing process sheet. There is a tendency for problems such as various performances such as mold releasability and heat resistance not being fully expressed. On the other hand, if the thickness or adhesion amount of the release layer exceeds the upper limit of the above range, the thermal conductivity in the heat press processing process etc. will deteriorate, and the productivity of clothing using the clothing process sheet will tend to decrease. There is.

In the process sheet for clothing of the present invention, in order to adjust the mold releasability between the stretchable material and the mold release layer, or by directly molding or directly coating a stretch material such as a thermoplastic elastomer resin on the mold release layer. In order to provide a pattern on the surface of the stretchable material, surface treatment such as embossing may be performed on the release layer side as necessary.

Next, the present invention will be specifically explained with reference to Examples.

<<About the manufacturing process sheet for clothing>>
A method for producing each clothing process sheet used in Examples and Comparative Examples of the present invention will be described below. The method for preparing and applying the coating material for the release layer and the method for preparing the process sheet for clothing shown below are merely examples and are not limited thereto, and various known methods can be used.

<Clothing process sheet of Example 1>
Based on the formulation of paint 1 for release layer shown below, each raw material was weighed and then put into a container and stirred and mixed thoroughly using a stirrer so that the mixture was uniform. Using a 75 μm thick (basis weight 64 g/m ² ) high-quality paper, apply the release layer coating 1 prepared so that the amount of adhesion after drying is 8.0 g/m ² , and then blow with hot air. A release layer was provided by drying with a dryer, and the process sheet for clothing used in Example 1 was produced.
(Release layer paint formulation 1)
Styrene/2-ethylhexyl acrylate/methacrylic acid copolymer resin emulsion (solid content 28%)...83.0 parts by mass Ammonia aqueous solution of zinc ammonium carbonate (zinc content 12.9% by mass)
...17.0 parts by mass

In addition, as for the preparation method of the ammonia aqueous solution of zinc ammonium carbonate used in the above-mentioned release layer paint 1 formulation, in the following ammonia aqueous solution formulation of ammonium zinc carbonate, first measure ion-exchanged water, zinc oxide, and ammonium bicarbonate, and then add each. An ammonia aqueous solution of ammonium zinc carbonate was prepared by charging the mixture into a reaction container and thoroughly stirring and mixing, and then adding the measured amount of ammonia water into the reaction container and causing a reaction.
(Contains ammonia aqueous solution of ammonium zinc carbonate)
Zinc oxide...16.0 parts by mass Ammonium bicarbonate...16.0 parts by mass Ion exchange water...40.0 parts by mass Ammonia water (ammonia content 25% by mass)...28.0 parts by mass

<Clothing process sheet of Example 2>
Each raw material was weighed and put into a container based on the following composition of the release layer paint 2, which is a composition in which stearic acid amide was added as a lubricant to the release layer paint 1 used in Example 1. The release layer paint 2 was prepared by thoroughly stirring and mixing the mixture with a stirrer so that it was uniform. After drying, it was coated on one side of high-quality paper with a thickness of 75 μm (basis weight 64 g/m ² ) using a bar coater. A release layer was provided by applying a release layer paint 2 prepared so that the adhesion amount was 8.0 g/m ² and drying it with a hot air dryer, and a process sheet for clothing used in Example 2. was created. The amount of stearamide added in the release layer paint 2 formulation is based on the solid content of the styrene/(meth)acrylate copolymer resin containing carboxyl groups added in the release layer paint 2 formulation. The ratio was 3 parts by mass per 100 parts by mass.
(2 formulations of paint for release layer)
Styrene/2-ethylhexyl acrylate/methacrylic acid copolymer resin emulsion (solid content 28%)...83.0 parts by mass Ammonia aqueous solution of zinc ammonium carbonate (zinc content 12.9% by mass)
...17.0 parts by mass Aqueous dispersion of stearamide (solid content 30%) ...2.3 parts by mass

<Clothing process sheet of Example 3>
Each raw material was weighed and placed in a container based on the following 3 formulations of the release layer coating, which was a formulation in which zinc stearate was added as a lubricant to the 1 formulation of the release layer coating used in Example 1. The release layer paint 3 was prepared by thoroughly stirring and mixing the materials with a stirrer so that they were uniform. After drying, the coating material 3 was coated on one side of high-quality paper with a thickness of 75 μm (basis weight 64 g/m ² ) using a bar coater. A release layer was provided by applying the release layer paint 3 prepared so that the adhesion amount was 8.0 g/m ² and drying it with a hot air dryer, and a process sheet for clothing used in Example 3. was created. The amount of zinc stearate added in the formulation of the paint 3 for the mold release layer is based on the solid content of the styrene/(meth)acrylate copolymer resin containing carboxyl groups added in the formulation of the paint 3 for the mold release layer. The ratio was 3 parts by mass per 100 parts by mass.
(3 formulations of paint for release layer)
Styrene/2-ethylhexyl acrylate/methacrylic acid copolymer resin emulsion (solid content 28%)...83.0 parts by mass Ammonia aqueous solution of zinc ammonium carbonate (zinc content 12.9% by mass)
...17.0 parts by mass Aqueous dispersion of zinc stearate (solid content 30%) ...2.3 parts by mass

<Clothing process sheet of Example 4>
Based on the formulation of the release layer coating material 1 used in Example 1 and the addition of a carbodiimide crosslinking agent as a crosslinking agent, each raw material was weighed and placed in a container. The released coating material 4 was prepared by thoroughly stirring and mixing the charged materials with a stirrer so that they were uniform, and using a bar coater, the corona-treated side of the corona-treated PET film with a thickness of 25 μm was coated. A release layer was provided by applying a release layer paint 4 prepared so that the amount of adhesion after drying was 8.0 g/m ² and drying it with a hot air dryer. A process sheet was created. The amount of carbodiimide crosslinking agent added in the release layer paint 4 is based on the solid content of the styrene/(meth)acrylate copolymer containing carboxyl groups added in the release layer paint 4. The ratio was 2.9 parts by mass per 100 parts by mass of the resin.
(4 formulations of paint for release layer)
Styrene/2-ethylhexyl acrylate/methacrylic acid copolymer resin emulsion (solid content 28%)...83.0 parts by mass Ammonia aqueous solution of zinc ammonium carbonate (zinc content 12.9% by mass)
...17.0 parts by mass Aqueous solution of carbodiimide crosslinking agent (solid content 40%) ...1.7 parts by mass

<Clothing process sheet of Comparative Example 1>
Based on the 5 formulations of the release layer paint shown below, which are the formulations obtained by removing the ammonia aqueous solution of zinc ammonium carbonate from the 1 formulation of the release layer paint used in Example 1, each raw material was weighed and placed in a container. The release layer paint 5 was prepared by thoroughly stirring and mixing the materials with a stirrer so that they were uniform. After drying, the coating material 5 was coated on one side of high-quality paper with a thickness of 75 μm (basis weight 64 g/m ² ) using a bar coater. A release layer was provided by applying the release layer paint 5 prepared so that the adhesion amount was 8.0 g/m ² and drying it with a hot air dryer. was created.
(5 formulations of paint for release layer)
Styrene/2-ethylhexyl acrylate/methacrylic acid copolymer resin emulsion (solid content 28%)...100.0 parts by mass

<Clothing process sheet of Comparative Example 2>
Based on the formulation of the release layer paint 6 shown below, the release layer paint 6 was prepared by weighing each raw material and putting it into a container, then thoroughly stirring and mixing it with a stirrer so that it was uniform. Using a 75 μm thick (basis weight 64 g/m ² ) high-quality paper, apply the release layer coating 6 prepared so that the amount of adhesion after drying is 8.0 g/m ² , and then blow with hot air. A release layer was provided by drying with a dryer, and a process sheet for clothing used in Comparative Example 2 was produced.
(6 formulations of paint for release layer)
Styrene/alkyl acrylate/methacrylate copolymer resin emulsion (solid content 40%)...100.0 parts by mass

<Clothing process sheet of Comparative Example 3>
Based on the formulation of the release layer paint 7 shown below, the release layer paint 7 is prepared by weighing each raw material and then putting it into a container and thoroughly stirring and mixing it with a stirrer so that it is uniform. Using a 75 μm thick (basis weight 64 g/m ² ) high-quality paper, apply the release layer coating 7 prepared so that the amount of adhesion after drying is 8.0 g/m ² , and then blow hot air. A release layer was provided by drying with a dryer, and a process sheet for clothing used in Comparative Example 3 was produced.
(7 formulations of paint for release layer)
Acrylic acid alkyl ester/methacrylic acid ester copolymer resin emulsion (solid content 40%)...100.0 parts by mass

<Clothing process sheet of Comparative Example 4>
Based on the formulation of the release layer paint 7 shown below, the release layer paint 7 is prepared by weighing each raw material and then putting it into a container and thoroughly stirring and mixing it with a stirrer so that it is uniform. Using a 75 μm thick (basis weight 64 g/m ² ) high-quality paper, apply the release layer coating 7 prepared so that the amount of adhesion after drying is 8.0 g/m ² , and then blow hot air. A release layer was provided by drying with a dryer, and a process sheet for clothing used in Comparative Example 4 was produced.
(7 formulations of paint for release layer)
Polypropylene resin emulsion (solid content 40%)...100.0 parts by mass

<Clothing process sheet of Comparative Example 5>
As a process sheet for clothing in Comparative Example 5, the 25 μm thick corona-treated PET film used in Example 4 was used as it was. For various evaluations, the corona-treated surface was assumed to be the release layer surface.

<Clothing process sheet of Comparative Example 6>
As the process sheet for clothing in Comparative Example 6, glassine paper (total thickness 70 μm) coated with a commercially available silicone release agent used as release paper for adhesive sheets was used. For various evaluations, the surface coated with the silicone release agent was assumed to be the release layer surface.

<<About various evaluation methods>>
Various measuring methods and various evaluation methods regarding various clothing process sheets of Examples and Comparative Examples are shown below.

<Measurement of contact angle of water on the surface of the mold release layer>
Regarding the measurement of the static contact angle of water on the surface of the release layer of the processing sheet for clothing in Examples and Comparative Examples, the separation method was performed using a portable contact angle meter PCA-1 manufactured by Kyowa Interface Science Co., Ltd. The static contact angle of water on the surface of the mold layer was measured, and this was taken as the static contact angle (degrees) of water on the surface of the mold release layer.

<Measurement of peeling force of adhesive tape>
A test piece with a width of 20 mm and a length of 15 cm was prepared by pasting the adhesive layer side of an adhesive tape "polyester adhesive tape No. 31B manufactured by Nitto Denko Co., Ltd." on the release layer surface of the clothing processing sheets of Examples and Comparative Examples. After the prepared test piece was allowed to stand for 24 hours in an environment with a temperature of 23°C and a humidity of 50% RH, it was set in a tensile tester and pulled at a peeling angle of 180 degrees and a peeling speed of 0.3 m/min. The force required for peeling was measured, the average peeling force was calculated, and this was taken as the peeling force (N/m) of the adhesive tape.

<Evaluation of mold releasability before hot press processing>
A mesh sheet made of a styrene/isoprene block copolymer resin prepared in advance was laminated by pressure on the release layer of the clothing process sheets of Examples and Comparative Examples to prevent wrinkles, and the temperature was 23°C and the humidity was 50%RH. After standing for 24 hours under the following environment, the state before and after the styrene/isoprene block copolymer resin mesh sheet was released from the clothing processing sheet was observed and evaluated under the conditions shown below. Note that from the viewpoint of use of the clothing processing sheet, it is desirable that the following evaluation be A or B.
A...The mesh sheet does not easily fall off from the clothing process sheet before the garment process sheet and the mesh sheet are released from the mold, and the force required to release the mesh sheet is not too large and is small. It was moderate without being too much.
B... The mesh sheet does not easily fall off from the clothing process sheet before the garment process sheet and the mesh sheet are released from the mold, but the force required to release the mesh sheet is slightly larger or slightly smaller. .
C: Although the mesh sheet does not easily fall off from the garment processing sheet before the garment processing sheet and the mesh sheet are released from the mold, the force required to release the mesh sheet is too large. Alternatively, the mesh sheet sometimes partially falls off from the clothing process sheet before being released from the mold, and the force required to release it from the mold is too small.
D: Although the mesh sheet does not easily fall off from the clothing processing sheet before the clothing processing sheet and the mesh sheet are released from the mold, the force required to release the mesh sheet is extremely large. Alternatively, in most cases, the mesh sheet partially or completely falls off from the garment process sheet before the garment process sheet and the mesh sheet are released from the mold.

<Evaluation of mold releasability and heat resistance after hot press processing>
After pressing and laminating a pre-prepared mesh sheet made of styrene-isoprene block copolymer resin on the release layer of the clothing process sheet of Examples and Comparative Examples to prevent wrinkles, an outer material made of a knitted fabric was further applied as described above. The laminate laminated so as to face the mesh sheet was heat pressed for 10 seconds at a processing temperature of 150°C and a pressure of 0.4 MPa using a heat press machine to melt and bond the outer material and the mesh sheet, and then After cooling by standing for 24 hours in an environment with a temperature of 23 ° C. and a humidity of 50% RH, the state when the fabric consisting of the outer material and the mesh sheet was released from the clothing process sheet was observed, and the results are shown below. The conditions were evaluated.
Note that from the viewpoint of use of the clothing processing sheet, it is desirable that the following evaluation be A or B.
A: The fabric and the clothing process sheet were released smoothly without any problems, and the force required for release was appropriate, neither too large nor too small.
B: The fabric and the clothing processing sheet are released from the mold without any problem, but the force required for releasing the mold is slightly large or small.
C...When releasing the fabric from the clothing process sheet, in rare cases, base material failure or cohesive failure of the release layer occurs partially due to melt adhesion or melt mixing of the release layer and mesh sheet. However, it may not be possible to release the mold normally, and the force required to release the mold is extremely large. Alternatively, the fabric may sometimes partially fall off from the clothing process sheet before being released from the mold, and the force required to release the garment from the mold is too small.
D...When releasing the fabric from the garment processing sheet, full or partial base material failure or cohesive failure of the release layer always occurs due to melt adhesion or melt mixing of the release layer and mesh sheet. However, normal mold release cannot be performed. Or, in most cases, the fabric falls off partially or completely from the garment process sheet before demolding.

<Evaluation of melt adhesion between lining and mesh sheet>
A lining made of knitted fabric is laminated on the mesh sheet side of the fabric produced in the above-mentioned "evaluation of mold release properties and heat resistance after hot press processing" and released from the clothing process sheet so as to face the mesh sheet, The laminate was heat pressed for 10 seconds at a processing temperature of 150° C. and a pressure of 0.4 MPa using a heat press machine to melt and bond the lining and the mesh sheet to produce a fabric having an outer lining, Furthermore, after cooling by leaving it for 24 hours in an environment with a temperature of 23°C and a humidity of 50% RH, we observed the state of the fabric when we tried to forcibly peel off the lining of the fabric, and under the conditions shown below. evaluated.
It is desirable that the following evaluation be A or B.
A: The fabric lining could not be peeled off at all.
B: The lining of the fabric could be slightly peeled off.
C: The lining of the fabric could be partially peeled off. There were many areas where the peeling occurred at the interface between the mesh sheet and the lining.
D: It was possible to peel off almost the entire lining of the fabric.

Table 1 below shows the details of the structure of the clothing process sheet of each Example and Comparative Example, and the results of the various measurements and evaluations that were performed on the clothing process sheet of each Example and Comparative Example.

※ 表１の比較例１～比較例４に関しては熱プレス加工後の生地と衣料用工程シートの離型の際に基材破壊が発生した為に、裏地とメッシュシートとの溶融接着の評価が行えなかった。また比較例５に関しては離型層が設けられていないので、離型層自体の耐熱性評価が行えなかった。
※ 表１の比較例４の離型層自体の耐熱性評価において、熱プレス加工後に離型層同士の貼りつきは無かったものの、離型層表面を観察すると荒れが見られた為に、熱プレス加工によって離型層同士が溶融混合し、その後衣料用工程シート同士を剥離した際に、離型層塗膜の凝集力が小さい為に離型層中で凝集破壊が発生したものと考えられる。

* Regarding Comparative Examples 1 to 4 in Table 1, the evaluation of the melt adhesion between the lining and the mesh sheet was not possible because the base material was destroyed during the release of the fabric after heat press processing and the garment process sheet. I couldn't do it. Further, in Comparative Example 5, since no mold release layer was provided, it was not possible to evaluate the heat resistance of the mold release layer itself.
* In the heat resistance evaluation of the release layer itself in Comparative Example 4 in Table 1, the release layers did not stick to each other after hot press processing, but when the surface of the release layer was observed, roughness was observed. It is thought that cohesive failure occurred in the release layer because the cohesive force of the release layer coating was small when the release layers melted and mixed together during press processing and then the clothing processing sheets were peeled off from each other. .

From the results in Table 1, like the clothing process sheets of Examples 1 to 4, a release layer is provided on at least one surface of the heat-resistant base material, and the release layer is made of styrene containing carboxyl groups. If a manufacturing process sheet for clothing is used, which contains a crosslinked product of meth)acrylate copolymer resin and zinc, and further has a static contact angle of water on the surface of the release layer in the range of 60 degrees or more and 110 degrees or less, It is possible to provide appropriate mold release properties with stretchable materials such as thermoplastic elastomer resin mesh sheets, and even when heat and pressure are applied during hot press processing, the mold release property with the thermoplastic elastomer resin. Because the layers have heat resistance that prevents melt adhesion or melt mixing, it is possible to smoothly release the mold from the thermoplastic elastomer resin fabric even after heat press processing. Furthermore, since no silicone component is used in the release layer, it is possible to avoid the problem of poor melt adhesion when melt adhering the lining to the fabric.

On the other hand, as in Comparative Example 1, in a garment process sheet using a release layer made only of a styrene/(meth)acrylate copolymer resin containing carboxyl groups, a mesh made of thermoplastic elastomer resin is used after hot press processing. When releasing the sheet from the fabric, due to the release layer's poor heat resistance, the thermoplastic elastomer resin mesh sheet and the release layer melt and adhere, resulting in poor release. The paper base material of the clothing process sheet was destroyed. In the case of processing sheets for clothing using a general acrylic resin paper surface treatment agent or a general polypropylene resin release agent as in Comparative Examples 2 to 4, the heat resistance is the same as in Comparative Example 1. Due to the lack of this, mold release is not performed properly and the base material of the clothing process sheet is destroyed. When a PET film subjected to corona treatment as in Comparative Example 5 was used as a processing sheet for clothing, the force during mold release became too large and appropriate mold release properties could not be obtained. When glassine paper coated with a silicone release agent as in Comparative Example 6 was used as a clothing processing sheet, the thermoplastic elastomer resin mesh sheet hardly stuck to the clothing processing sheet and fell off immediately. When the lining is further melt-bonded to the outer material and the fabric made of the thermoplastic elastomer resin mesh sheet, the silicone to the thermoplastic elastomer resin mesh sheet is bonded between the thermoplastic elastomer resin mesh sheet and the lining. A problem occurred with poor melt adhesion, which appears to be caused by component migration.

The clothing processing sheet of the present invention is not only used when making clothing fabrics and manufacturing clothing, but also can be used to hot-press soft and stiff elastic materials such as thermoplastic elastomer resin and other materials. It can be usefully used as a process sheet when melting and bonding, and it can also be used as a process sheet to temporarily hold stretchable materials to prevent wrinkles, etc. is also possible.

1; Heat-resistant base material 2; Release layer 3; Processing sheet for clothing 4; Sealing layer or primer layer 5; Stretchable adhesive interlining (stretchable material: thermoplastic elastomer resin mesh sheet)
6; Heat compression roll 7; Outer material (woven or knitted fabric)
8; Metal plate 9a of heat press processing machine; Stretchable fabric (outer material + stretchable adhesive interlining)
9b; Stretchable fabric (outer material + stretchable adhesive interlining + lining)
10; Lining (woven or knitted fabric)

Claims (6)

A mold release layer is provided on at least one surface of the heat-resistant base material, and the mold release layer contains a crosslinked product of styrene/(meth)acrylate copolymer resin containing a carboxyl group and zinc, and A process sheet for clothing having a static contact angle of water in a range of 60 degrees or more and 110 degrees or less. The process sheet for clothing according to claim 1, wherein the styrene/(meth)acrylate copolymer resin is a styrene/acrylic acid alkyl ester/methacrylic acid copolymer resin. 100 mass of styrene/(meth)acrylate copolymer resin containing a carboxyl group, in which a lubricant other than a silicone compound having a melting point in the range of 90° C. or higher and 180° C. or lower is added to the mold releasing layer in terms of solid content. The process sheet for clothing according to claim 1 or 2, wherein the sheet is contained in an amount of 10 parts by mass or less. 4. The process sheet for clothing according to claim 1, wherein the release layer contains at least one of a metal soap-based lubricant and a fatty acid amide-based lubricant as a lubricant. Any one of claims 1 to 4, wherein the release layer further contains a crosslinked product of a styrene/(meth)acrylate copolymer resin containing a carboxyl group and a carbodiimide crosslinking agent or an oxazoline crosslinking agent. Clothing process sheet described in . Even if the release layers of two clothing processing sheets are placed in contact with each other and heat pressed for 20 minutes using a heat press machine at a processing temperature of 150°C and a pressure of 1.5 MPa, the release layers will not melt and adhere to each other. The process sheet for clothing according to any one of claims 1 to 5, characterized in that it does not undergo melt mixing or melt mixing.