KR101285981B1 - Biodegradable panel - Google Patents

Abstract

The present invention relates to a panel, and more particularly includes a panel layer and a printed layer formed on the panel layer, the panel layer comprises a PLA resin, and relates to an environmentally friendly biodegradable panel.

Description

Biodegradable Panels {BIODEGRADABLE PANEL}

The present invention relates to a panel, and more particularly includes a panel layer and a printed layer formed on the panel layer, the panel layer comprises a PLA resin, and relates to an environmentally friendly biodegradable panel.

Sheets using petroleum resins such as polyvinyl chloride (PVC) are widely used in buildings such as houses, apartments, apartments, offices, and stores.

Such a sheet is produced by T-die extrusion or calendering method using a resin such as polyvinyl chloride (PVC). However, since the raw material is obtained entirely from crude oil, which is a limited resource, it is expected that problems such as supply and demand of raw materials will occur in the future due to exhaustion of petroleum resources.

In addition, even in consideration of increasing environmental concerns, polyvinyl chloride (PVC) -based sheet has a problem that it is easy to discharge the harmful substances, burdening the environment at the time of disposal.

An object of the present invention is to solve the problem of supply and demand of the raw material of each layer constituting the panel by using the PLA resin, to provide an environmentally friendly panel.

In particular, it is an object of the present invention to provide a biodegradable panel that is environmentally friendly and has excellent dimensional stability by having a wood layer, a fiber as a reinforcing agent, and having a panel layer containing PLA resin.

Biodegradable panel according to an embodiment of the present invention for achieving the above object comprises a panel layer, a printing layer formed on the panel layer, the panel layer is characterized in that it comprises a PLA resin.

Biodegradable panel according to another embodiment of the present invention for achieving the above object includes a substrate layer, a panel layer formed on the base layer, a printing layer formed on the panel layer, the panel layer is PLA It is characterized by including a resin.

Biodegradable panel according to another embodiment of the present invention for achieving the above object is a substrate layer, a panel layer formed on the base layer, a printed layer formed on the panel layer, a transparent layer formed on the printed layer To include, at least one of the panel layer and the transparent layer is characterized in that it comprises a PLA resin.

The biodegradable panel according to the present invention can solve the problem of supply and demand of raw materials due to exhaustion of petroleum resources by using PLA resin based on plant resources instead of PVC generally used.

In addition, the biodegradable panel according to the present invention is less emissions of environmentally harmful substances such as CO ₂ during manufacture, and is easy to dispose of.

In addition, the biodegradable panel according to the present invention can be used in various aspects, such as building wall materials, building interior materials.

1 to 3 are cross-sectional views showing embodiments of the biodegradable panel according to the present invention.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, a biodegradable panel according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 to 3 are cross-sectional views showing a biodegradable panel according to an embodiment of the present invention.

As shown in FIG. 1, the biodegradable panel according to the present invention includes a panel layer 110 and a printed layer 120 from below. In this case, the panel layer 110 includes a PLA resin.

As shown in FIG. 2, the biodegradable panel according to the present invention may further include a base layer 130 under the panel layer 110. In this case, the panel layer 110 includes a PLA resin.

As shown in FIG. 3, the biodegradable panel according to the present invention may further include a transparent layer 140 on the printed layer 120 of the biodegradable panel of FIG. 2. In this case, at least one of the panel layer 110 and the transparent layer 140 includes a PLA resin.

The PLA resin may be prepared by polymerizing lactic acid produced by fermenting starch extracted from corn, potato or the like as a lactide or a thermoplastic polyester of lactic acid. Since the corn, potatoes and the like are a renewable plant resource, the PLA resin that can be obtained from them can effectively cope with problems caused by depletion of petroleum resources.

In addition, the PLA resin is environmentally friendly in that the emission of environmentally harmful substances such as CO ₂ is much lower than that of petroleum-based materials such as polyvinyl chloride (PVC) during use or disposal, .

The PLA resin can be divided into a crystalline PLA (c-PLA) resin and an amorphous PLA (a-PLA) resin. In this case, in the case of the crystalline PLA resin, the plasticizer flows to the panel surface, so that a bleeding phenomenon may occur, it is preferable to use an amorphous PLA resin. When an amorphous PLA resin is used, there is an advantage that a compatibilizer which is essentially added to prevent bleeding phenomenon is not added. When an amorphous PLA resin is used, it is most preferable to use a 100% amorphous PLA resin as the PLA resin, and a PLA resin in which crystalline and amorphous coexist can be used, if necessary.

The biodegradable panel of the present invention may use any one of a sol-type PLA resin, a resin blended PLA resin and a bio resin, a resin blended PLA resin and synthetic resin.

First, the biodegradable panel of the present invention may use a sol-type PLA resin, the sol-type PLA resin is added to the PLA solution made by adding the PLA resin to the volatile solvent, and then removes the volatile solvent by the drying process Or by adding a plasticizer to the PLA resin in pellet or powder form.

In addition, the biodegradable panel of the present invention may be a resin blended PLA resin and bio resin, where the bio resin is not limited if it has biodegradability, in particular cellulose (Cellulose), chitin (Chitin), starch (Starch), Poly Hydroxyl Alkanoate (PHA), Poly Hydroxy Butyrate Valerate (PHBV), Poly Vinyl Alcohol (PVA), Poly Glycolic Acid (PGA), Poly Butylene Succinate (PBS), Poly Butyleneadipate-co-Butylene Succinate (PBSA) At least one selected from polybutylene adipate terephthalate (PBAT), polycapro lactone (PCL), poly (ester-amide) (polyester), and poly (ester-urethane) (polyester) Resin is preferable from the viewpoint of compatibility with PLA resin and biodegradability.

The resin in which the PLA resin and the bio resin are blended preferably includes 10 to 70 parts by weight of the bio resin based on 100 parts by weight of the PLA resin. When the bio resin is less than 10 parts by weight, it is difficult to expect the effect of the blend, and when it exceeds 70 parts by weight, compatibility with other additives may be a problem.

In addition, the biodegradable panel of the present invention may use a resin blended PLA resin and synthetic resin, wherein the synthetic resin is PVC (polyvinyl chloride), PEG (polyethylene glycol), EVA (ethylene vinyl acetate), TPE (thermo plastic) Elastomers (TPU), Thermoplastic Polyurethane (TPU), Thermoplastic Starch (TPS), ENR (epoxidized naturalrubber), Ionomers, SBS (styrene butadiene styren), NBR (nitrilebutadiene rubber), SEBS (styrene ethylene butylenes styrene), Acrylic Compatibility with PLA resin is at least one selected from acrylate, acrylonitrile butadiene styrene, polyolefin modified with compatibilizer, PU, polyamide, and polyester. It is preferable in terms of biodegradability.

It is preferable that the PLA resin and the resin blended resin include 10 to 70 parts by weight of synthetic resin based on 100 parts by weight of PLA resin. If the synthetic resin is less than 10 parts by weight, it is difficult to expect the effect of the blend, if it exceeds 70 parts by weight compatibility with other additives may be a problem, and the intended biodegradation effect is difficult to obtain.

Plasticizers and processing aids may be added to the PLA resin constituting the panel of the present invention.

The plasticizer is particularly preferably a non-phthalate plasticizer, the non-phthalate plasticizer is environmentally friendly, it is easy to mold at high temperatures by softening the PLA resin to increase the thermoplastic. As such a non-phthalate plasticizer, it is preferable to select and use citric acid, citric acid ester, epoxidized vegetable oil, fatty acid ester, polyethylene glycol, polyethylene propylene glycol, and glycerol ester suitable for the physical properties of each layer.

The non-phthalate plasticizer is included in the transparent layer 140, it is preferable to use in a ratio of 5 to 50 parts by weight based on 100 parts by weight of the PLA resin.

When the content of the plasticizer of each layer is less than the above numerical range, the hardness of the PLA resin may be increased, the workability may be lowered, and when it exceeds 50 parts by weight, the compatibility with other components may be lowered and the physical properties may be deteriorated.

As the processing aid plays a role of reinforcing the melt strength, it is preferable to add the processing aid because the PLA resin itself has low melt strength or heat resistance.

It is preferable to use an acrylic copolymer, an epoxy copolymer, a urethane copolymer, and a polyolefin copolymer as such processing aids. This facilitates processing such as calendering by supplementing the melt strength of the PLA resin.

The processing aid is included in the transparent layer 140, it is preferable to use in a ratio of 0.1 to 20 parts by weight based on 100 parts by weight of the PLA resin.

If the content of the processing aid of each layer is less than the above numerical range, the improvement of the melting efficiency and melt strength improvement efficiency of the PLA resin is insufficient, if the above exceeds the numerical range, the manufacturing cost increases, and other materials constituting each layer of the panel Due to compatibility problems with each other, the overall physical properties of each layer may be reduced.

In the present invention, one or more lubricants, additives, and the like may be added to the PLA resin constituting the biodegradable panel.

The lubricant is added to prevent the resin from sticking to the calender roll or the press during processing such as calendering of the PLA resin.

Such lubricants are not limited to the use of stearic acid, waxes, hydrocarbons, silicones, and the like, but in the present invention, it is particularly preferable to use environmentally friendly higher fatty acids, and examples thereof may include stearic acid, which is a saturated higher fatty acid having 18 carbon atoms.

The lubricant may be included in the transparent layer 140, it is preferable to use in a ratio of 0.1 to 8 parts by weight based on 100 parts by weight of the PLA resin.

If the amount of the lubricant is less than 0.1 part by weight based on 100 parts by weight of the PLA resin, the effect of using the lubricant is not obtained. When the amount of the lubricant is more than 8 parts by weight based on 100 parts by weight of the PLA resin, the impact resistance, heat resistance, and glossiness of the PLA resin may be degraded. have.

The additive may include a crosslinking agent, a hydrolysis agent, a reinforcing agent, and the like.

The crosslinking agent increases the molecular weight through the chain extension serves to improve the tensile strength, heat resistance and the like.

Such a crosslinking agent may be a diisocyanate, an epoxy group copolymer, a hydroxycarboxylic acid compound, or the like, but is not limited thereto.

The crosslinking agent may be included in both the panel layer 110 and the transparent layer 140, the panel layer 110 is preferably used in a ratio of 0.1 to 5.0 parts by weight with respect to 100 parts by weight of the PLA resin, in the case of the transparent layer 140 It is preferable to use it in the ratio of 0.01-10 weight part with respect to 100 weight part of PLA resin.

When the content of the crosslinking agent is less than the above range, there is a problem that the heat resistance is lowered, and when the content of the crosslinking agent exceeds the above range, there is a fear that a problem that the flexibility is lowered.

The hydrolysis agent serves to prevent the PLA resin from being hydrolyzed to lower mechanical properties such as impact resistance.

Such a hydrolysis agent can be used without limitation so long as it is usually used as a hydrolysis agent such as carbodiimide and oxazoline.

The hydrolysis agent may be included in the transparent layer 140, it is preferable to use in a ratio of 0.01 to 10 parts by weight relative to 100 parts by weight of the PLA resin.

When the content of the hydrolysis agent is less than the above range, there is a problem of hydrolysis due to moisture during processing, and when exceeding the above range, not only the molding processability is lowered, but also the manufacturing cost can be greatly increased.

The reinforcing agent may be included in the panel layer 110, and the type of reinforcing agent is not particularly limited, but preferably includes at least one of wood powder, paper, and fibers.

The reinforcing agent is preferably used in a ratio of 1.0 to 10.0 parts by weight based on the total weight of the panel layer. If it is less than the above range, there is a problem of panel strength, and if it exceeds the above range, there is a problem that the panel is bent.

Hereinafter, the panel layer 110, the print layer 120, the base layer 130, and the transparent layer 140 illustrated in FIGS. 1 to 3 will be described.

In the present invention, the panel layer 110 is the most basic layer of the panel, and supports the upper printed layer 120.

In the present invention, the panel layer 110 not only imparts aesthetic effect of the panel, but also serves as a base material, and has eco-friendliness by including a biodegradable PLA resin.

The panel layer 110 may use the above-described PLA resin, additionally, reinforcing agents, crosslinking agents, etc. may be added to the PLA resin alone or two or more kinds thereof. Each composition ratio is as above-mentioned.

The panel layer 110 may be formed by a known injection or press method, but is not limited thereto.

In the present invention, the printed layer 120 formed on the panel layer 110 may be provided with various patterns and / or colors to the panel, thereby further improving the aesthetic effect. At this time, the method for forming the printed layer 120 is not particularly limited, and can be formed using, for example, a known printing method such as gravure printing, transfer printing, digital printing or rotary printing.

Moreover, a more realistic aesthetic effect can also be provided using a well-known live-print printing method, such as inkjet printing.

In the biodegradable panel of the present invention, as shown in Figure 2, the base layer 130 may be further formed below the panel layer 110, the base layer 130 is known in the art to which the present invention belongs General substrates may be used without limitation, and examples thereof include, but are not limited to, imitation paper, nonwoven fabric, cotton fabric, and the like.

Imitation paper is composed of pulp, and nonwoven fabric has a composite of pulp and polyester.

It is preferable that basis weights, such as a mock paper, a nonwoven fabric, and cotton fabric which comprise a base material layer, are 80-200 g / m <^2> . If the basis weight of the substrate layer is less than 80 g / m ² , there is a risk of damage such as panel tearing during construction or use process, if it exceeds 200 g / m ² the substrate becomes heavy, gaps and curling phenomenon It is difficult to construct due to occurrence.

In the biodegradable panel of the present invention, as shown in FIG. 3, a transparent layer 140 may be further formed on the printed layer 120.

The transparent layer 140 of the present invention is formed on the printed layer 120 to improve the durability of the panel, and serves to protect the pattern formed on the upper surface of the printed layer 130.

The transparent layer 130 may use a PLA resin containing the above-described plasticizer, processing aids, and additionally, a crosslinking agent, a hydrolysis agent, or the like may be added to the PLA resin alone or two or more kinds thereof. Each composition ratio is as above-mentioned.

Example  And In a comparative example  by Panel  Produce

Hereinafter, the production examples of the panel according to the preferred embodiment of the present invention and the production examples according to the comparative example. However, this is presented as a preferred example of the present invention, and in no sense can be construed as limiting the present invention.

Details that are not described herein will be omitted since those skilled in the art can sufficiently infer technically.

Example

Manufacturing method of each layer

1. Base layer

A nonwoven fabric made of 70% pulp and 30% polyester was prepared to prepare a base layer.

2. Formation of Panel Layer

After mixing 10 parts by weight of wood powder and 5 parts by weight of crosslinking agent with respect to 100 parts by weight of the PLA resin, a panel layer was formed by a known injection method.

3. Formation of Printed Layer

Water-based ink pigments and oil-based ink pigments were mixed for each printing frequency, and a printed pattern was formed on the resin layer by using a transfer printing method.

4. Formation of Transparent Layer

50 parts by weight of citric acid, 10 parts by weight of an acrylic copolymer, 8 parts by weight of stearic acid, and 5 parts by weight of a crosslinking agent were mixed with respect to 100 parts by weight of the PLA resin to form a paste, and then coated on the top of the printed layer.

Example  1-5

The layer structure was adopted as shown in Table 1 below to prepare the biodegradable panels of Examples 1 to 5 by sequentially laminating from the left.

On the other hand, the embodiment using the PLA resin blended with the bio resin, or blended with a synthetic resin is shown in Table 1 below, the composition ratio is also shown.

Substrate layer Panel layer Printing layer Transparent layer Example 1 O O Example 2 O
PLA 100 parts by weight
PBS 30 parts by weight O Example 3 O
PLA 100 parts by weight
30 parts by weight of PVC O Example 4 O O O Example 5 O O O O

Comparative example

A base paper layer was prepared by preparing a base paper made of 100% pulp, and a commercially available PVC silk panel was prepared by coating and drying a paste containing a PVC resin on the base layer.

evaluation

Panels according to Examples 1 to 5 and Comparative Examples were evaluated for the items in Table 2 and prepared.

curling Moisture permeability Light fastness TVOC Example 1 ○ ○ ○ ○ Example 2 ○ ○ △ ○ Example 3 ○ △ ○ ○ Example 4 ○ ○ ○ ○ Example 4 ○ ○ ○ ○ Comparative example ○ ○ ○ △

Curling property refers to the degree of curling after immersing the specimen in a water bath and after leaving it in an oven at 80 ° C.

Moisture permeability is the amount by which moisture moves to a product, and 175 g / m <2> * 24hr or more is evaluated as good ((circle)) and less than 175 g / m <2> * 24hr is evaluated as bad (X).

Daylight fastness is evaluated as good (○) and less than 4 as bad (X) based on KS M 7305.

Eco-friendliness refers to TVOC (volatile organic compound) and HCHO (formaldehyde) emission levels. If TVOC is less than 0.1 mg / m 2 · h and HCHO is less than 0.015 mg / m 2 · h (○), TVOC 0.09 to 0.12 mg / m 2. h or HCHO of 0.013 to 0.017 mg / m 2 · h is usually evaluated as (Δ), 0.1 mg / m 2 · h or more, and HCHO of 0.015 mg / m 2 · h or more as poor (X).

In view of the above evaluation results, the biodegradable panel according to the present invention can be seen that the dimensional stability, moisture permeability, daylight fastness is very good enough to replace the existing PVC panel, the transfer of TVOC (total volatile organic compounds) Remarkably less than PVC, it can be seen that the environmental friendliness is excellent.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above embodiments and can be manufactured in various forms, and having ordinary skill in the art to which the present invention pertains. It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without changing the technical spirit or essential features of the present invention. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

110: panel layer
120: print layer
130: substrate layer
140: transparent layer

Claims (23)

Panel layer; And
And a printing layer formed on the panel layer.
The panel layer comprises a PLA resin, biodegradable panel, characterized in that it further comprises 1.0 to 10.0 parts by weight of reinforcing agent, 0.1 to 5 parts by weight of crosslinking agent, relative to 100 parts by weight of PLA resin.
A base layer;
A panel layer formed on the base layer; And
And a printing layer formed on the panel layer.
The panel layer comprises a PLA resin, biodegradable panel, characterized in that it further comprises 1.0 to 10.0 parts by weight of reinforcing agent, 0.1 to 5 parts by weight of crosslinking agent, relative to 100 parts by weight of PLA resin.
3. The method according to claim 1 or 2,
The PLA resin is a biodegradable panel, characterized in that using the sol form.
3. The method according to claim 1 or 2,
The PLA resin is biodegradable panel, characterized in that blended with the bio resin, included in the panel layer.
5. The method of claim 4,
The bio resin is cellulose (Cellulose), chitin (Chitin), starch (Starch), PHA (Poly Hydroxyl Alkanoate), PHBV (Hydroxy Butyrate Valerate), PVA (Poly Vinyl Alcohol), PGA (Poly Glycolic Acid), PBS (Poly) Butylene Succinate (PBSA), Poly Butyleneadipate-co-Butylene Succinate (PBSA), Poly Butylene Adipate Terephthalate (PBAT), Poly Capro Lactone (PCL), Poly (Ester-Amide) and Poly (Ester-Urethane) Biodegradable panel, characterized in that at least one resin selected from (Poly (Ester-Urethane)).
3. The method according to claim 1 or 2,
The PLA resin is blended with a synthetic resin, biodegradable panel, characterized in that included in the panel layer.
The method according to claim 6,
The synthetic resin is PVC (polyvinyl chloride), PEG (polyethylene glycol), EVA (ethylene vinyl acetate), TPE (thermoplastic elastomer), TPU (thermoplastic polyurethane), TPS (thermo plastic starch), ENR (epoxidized naturalrubber), ionomer Polyolefin modified with compatibilizer including ionomer, styrene butadiene styren (SBS), nitrilebutadiene rubber (NBR), styrene ethylene butylenes styrene (SEBS), acrylate (acrylate), acrylonitrile butadiene styrene (ABS), and a compatibilizer ), PU (polyurethane), polyamide, biodegradable panel, characterized in that at least one resin selected from polyester.
delete The method according to claim 1 or 2,
The reinforcing agent biodegradable panel, characterized in that it comprises at least one of wood flour, fibers.
delete A base layer;
A panel layer formed on the base layer;
A printing layer formed on the panel layer; And
And a transparent layer formed on the printing layer,
The panel layer comprises a PLA resin, biodegradable panel, characterized in that it further comprises 1.0 to 10.0 parts by weight of reinforcing agent, 0.1 to 5 parts by weight of crosslinking agent, relative to 100 parts by weight of PLA resin.
12. The method of claim 11,
The PLA resin is a biodegradable panel, characterized in that using the sol form.
12. The method of claim 11,
The PLA resin is biodegradable panel, characterized in that blended with the bio resin, included in the panel layer.
The method of claim 13,
The bio resin is cellulose (Cellulose), chitin (Chitin), starch (Starch), PHA (Poly Hydroxyl Alkanoate), PHBV (Hydroxy Butyrate Valerate), PVA (Poly Vinyl Alcohol), PGA (Poly Glycolic Acid), PBS (Poly) Butylene Succinate (PBSA), Poly Butyleneadipate-co-Butylene Succinate (PBSA), Poly Butylene Adipate Terephthalate (PBAT), Poly Capro Lactone (PCL), Poly (Ester-Amide) and Poly (Ester-Urethane) Biodegradable panel, characterized in that at least one resin selected from (Poly (Ester-Urethane)).
12. The method of claim 11,
The PLA resin is blended with a synthetic resin, biodegradable panel, characterized in that included in the panel layer.
16. The method of claim 15,
The synthetic resin is PVC (polyvinyl chloride), PEG (polyethylene glycol), EVA (ethylene vinyl acetate), TPE (thermoplastic elastomer), TPU (thermoplastic polyurethane), TPS (thermo plastic starch), ENR (epoxidized naturalrubber), ionomer Polyolefin modified with compatibilizer including ionomer, styrene butadiene styren, SBR, nitrilebutadiene rubber, NBR ), PU (polyurethane) biodegradable panel, characterized in that at least one resin selected.
delete The method of claim 11,
The reinforcing agent biodegradable panel, characterized in that it comprises at least one of wood flour, fibers.
delete 12. The method of claim 11,
The transparent layer comprises a PLA resin, and further comprising at least one of a plasticizer, a processing aid.
12. The method of claim 11,
The transparent layer comprises a PLA resin, the biodegradable panel further comprises 5 to 50 parts by weight of the plasticizer and 0.1 to 20 parts by weight of the processing aid with respect to 100 parts by weight of the PLA resin.
12. The method of claim 11,
The transparent layer comprises a PLA resin, biodegradable panel further comprises at least one of a lubricant, a crosslinking agent, a hydrolysis agent.
12. The method of claim 11,
The transparent layer comprises a PLA resin, the biodegradable panel further comprises 0.1 to 8 parts by weight of lubricant, 0.01 to 10 parts by weight of crosslinking agent, and 0.01 to 10 parts by weight of hydrolysis agent with respect to 100 parts by weight of PLA resin.

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