KR101305741B1 - Biodegradable panel having board layer - Google Patents

Abstract

The present invention relates to a panel, and more particularly includes a board layer, an adhesive layer formed on the board layer, a resin layer formed on the adhesive layer, wherein at least one of the adhesive layer and the resin layer is PLA resin It relates to a biodegradable panel comprising a.

Description

Biodegradable panel containing board layer {BIODEGRADABLE PANEL HAVING BOARD LAYER}

The present invention relates to a panel, and more particularly includes a board layer, an adhesive layer formed on the board layer, a resin layer formed on the adhesive layer, wherein at least one of the adhesive layer and the resin layer is PLA resin It relates to a biodegradable panel comprising a.

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 materials are all obtained from crude oil, which is a limited resource, it is expected that problems such as difficulty in supply to raw materials will arise 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.

Biodegradable panel according to an embodiment of the present invention for achieving the above object comprises a board layer, an adhesive layer formed on the board layer, a resin layer formed on the adhesive layer, the adhesive layer and the resin layer At least one of them is characterized in that it comprises a PLA resin.

Biodegradable panel according to another embodiment of the present invention for achieving the above object is a board layer, the adhesive layer formed on the board layer, the resin layer formed on the adhesive layer, the printing formed on the resin layer A layer, wherein at least one of the adhesive layer and the resin layer comprises a PLA resin.

Biodegradable panel according to another embodiment of the present invention for achieving the above object is a board layer, the adhesive layer formed on the board layer, the resin layer formed on the adhesive layer, the surface formed on the resin layer And a treatment layer, wherein at least one of the adhesive layer and the resin layer comprises a PLA resin.

Biodegradable panel according to another embodiment of the present invention for achieving the above object is a board layer, the adhesive layer formed on the board layer, the resin layer formed on the adhesive layer, the printing formed on the resin layer Layer, a surface treatment layer formed on the printed layer, wherein at least one of the adhesive layer and the resin 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 wall materials, interior materials of buildings.

1 to 4 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 4 are cross-sectional views showing a biodegradable panel according to an embodiment of the present invention.

First, as shown in Figure 1, the biodegradable panel according to the present invention comprises a board layer 110, an adhesive layer 120, a resin layer 130 from below, the adhesive layer 120 and the resin layer 130 At least one of) includes 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), 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 resin selected from polybutylene adiate terephthalate (PBAT), poly capro lactone (PCL), poly (ester-amide) (poly) and poly (ester-urethane) (poly (ester-urethane)) Is preferable in view 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 biodegradable 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 nonphthalate plasticizer, citric acid, citric acid ester, epoxidized vegetable oil, fatty acid ester, polyethylene glycol, polyethylene propylene glycol, and glycerol ester are preferably used.

It is preferable to use the said nonphthalate plasticizer in the ratio of 10-50 weight part with respect to 100 weight part of PLA resin.

When the content of the plasticizer is less than 10 parts by weight relative to 100 parts by weight of the PLA resin, the hardness of the PLA resin may be increased, and workability may be reduced. When the content of the plasticizer is greater than 50 parts by weight, the compatibility with other components may be deteriorated, thereby deteriorating physical properties.

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 preferably used in a ratio of 1 to 10 parts by weight based on 100 parts by weight of the PLA resin.

When the content of the processing aid is less than 1 part by weight relative to 100 parts by weight of the PLA resin, the improvement of the melting efficiency and the melt strength improvement efficiency of the PLA resin is insufficient, and when it exceeds 10 parts by weight, the manufacturing cost increases, and each layer of the panel is constituted. The overall physical properties of each layer may be lowered due to compatibility with other materials.

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

The filler is generally added to change the physical properties and cost reduction of the PLA resin composition, there is no limitation on the type, but it is preferable to use a commonly used calcium carbonate (CaCO ₃ ).

The filler may be included in the resin layer 130, it is preferable to use in a proportion of 50 to 150 parts by weight based on 100 parts by weight of the PLA resin.

If the content of the filler is less than 50 parts by weight relative to 100 parts by weight of the PLA resin, there is no cost saving effect, and if it exceeds 150 parts by weight, it may cause a change in physical properties.

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 resin layer 130, it is preferable to use in a ratio of 0.1 to 8 parts by weight with respect to 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, an antioxidant, 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 included in the resin layer 130, and a diisocyanate, an epoxy group copolymer, a hydroxycarboxylic acid compound, and the like may be used, but is not limited thereto.

The antioxidant serves to prevent the PLA resin from being oxidized to lower mechanical properties such as impact resistance.

Such an antioxidant may be included in the resin layer 130, but a phenol-based, sulfur-based, phosphorus-based antioxidant, or the like used as an antioxidant for plastics may be used, but is not limited thereto.

Antioxidants are nontoxic, stable at processing temperatures, do not interfere with activity and other resin processability, and have high compatibility with resins.

It is preferable to use additives, such as a crosslinking agent and antioxidant, at a ratio of 0.2-5 weight part with respect to 100 weight part of PLA resin.

When the content of the additive is less than 0.2 parts by weight relative to 100 parts by weight of the PLA resin, the additive use effect may not be obtained. When the content of the additive exceeds 5 parts by weight based on 100 parts by weight of the PLA resin, the moldability of the PLA resin may be deteriorated, and the manufacturing cost is increased. Done.

Hereinafter, the board layer 110, the adhesive layer 120, the resin layer 130, the print layer 140, and the surface treatment layer 150 of the present invention illustrated in FIGS. 1 to 4 will be described. .

In the present invention, the board layer 110 is the most basic layer of the panel, and supports the adhesive layer 120, the resin layer 130, and the like.

The base layer 110 may use a general substrate known in the art to which the present invention belongs, without limitation, for example, but not limited to imitation paper, non-woven fabric, cotton fabric.

In the case of imitation paper, it is composed of pulp, and in the case of nonwoven fabric, it has a composite composition 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.

The adhesive layer 120 formed on the base layer 110 in the present invention serves to have the board layer 110 and the resin layer 130 has a laminated structure, including PLA resin to give biodegradability It is characterized by.

The adhesive layer 120 preferably comprises 10 to 40% by weight of PLA resin, 60 to 90% by weight of the solvent, the solvent is methyl ethyl ketone (MEK), methyl isobutyl ketone (MIBK), acetone (acetone), At least one of ethyl alcohol is preferable.

In the present invention, the resin layer 130 formed on the adhesive layer 120 is provided with an aesthetic effect of the panel, and has eco-friendliness by including biodegradable PLA resin.

The resin layer 130 may use a PLA resin containing the above-described plasticizer, processing aids, and additionally, fillers, lubricants, additives, etc. may be added to the PLA resin alone or two or more kinds thereof. Each composition ratio is as above-mentioned.

The resin layer 130 may be formed by a known calendering method or a T-die extrusion method, but is not limited thereto.

2 is a cross-sectional view of a biodegradable panel according to another embodiment of the present invention.

As shown in FIG. 2, the biodegradable panel of the present invention may further include a printing layer 140 on the resin layer 130.

In the present invention, the printing layer 140 formed on the resin layer 130 may be provided with various patterns and / or colors on the panel, thereby improving aesthetic effect. At this time, the method of forming a printing layer is not specifically limited, For example, it can form using well-known printing methods, such as gravure printing, transfer printing, digital printing, or rotary printing.

Moreover, although it can also form by a real-time printing and a transfer printing method, it can also provide a more realistic and simple aesthetic effect using well-known real-life printing methods, such as inkjet printing, or a transfer printing method.

3 and 4 are cross-sectional views of other biodegradable panels according to another embodiment of the present invention.

As shown in FIGS. 3 and 4, the biodegradable panel of the present invention may further include a surface treatment layer 150 formed on the resin layer 130 and the printing layer 140, respectively.

The surface treatment layer 150 of the present invention is formed on the printed layer 140 to improve the durability of the panel, and serves to protect the pattern formed on the upper surface of the printed layer 140.

The surface treatment layer 150 of the present invention may be formed using a resin having a transparent property such as an acrylic resin and a urethane resin.

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.

The contents not described here are sufficiently technically inferior to those skilled in the art, and a description thereof will be omitted.

Example

Manufacturing method of each layer

1. Board layer

A 9 mm thick MDF board was prepared to prepare a base layer.

2. Formation of Adhesive Layer

PLA resin and methyl ethyl ketone were mixed at 80 ° C. in a ratio of 40% by weight and 60% by weight, respectively, to prepare a PLA resin paste for an adhesive layer.

3. Formation of Printed Layer

Water-based ink pigments and oil-based ink pigments were mixed by printing frequency, and printed patterns were formed on the resin layer by using a transfer printing method and a flat screen printing method.

4. Formation of Resin Layer

50 parts by weight of citric acid, 150 parts by weight of charcoal, 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, and then kneaded with a kneader at 90 to 200 ° C. Alternatively, a panel having a thickness of about 0.01 mm was manufactured by the extrusion method.

5. Formation of Surface Treatment Layer

Acrylic resin and methyl ethyl ketone were mixed at 20 wt% and 80 wt%, respectively, to prepare a coating solution for surface treatment.

Example  1 to 6

The layer structure was adopted as shown in Table 1 below to prepare biodegradable panels of Examples 1 to 6 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.

Board layer Adhesive layer Resin layer Printing layer Surface Treatment Layer Example 1 O O O Example 2 O O
PLA 100 parts by weight
PBS 30 parts by weight O
PLA 100 parts by weight
PBS 30 parts by weight Example 3 O O
PLA 100 parts by weight
30 parts by weight of PVC O
PLA 100 parts by weight
30 parts by weight of PVC Example 4 O O O O Example 5 O O O O Example 6 O 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 6 and Comparative Examples were evaluated for the items in Table 2 and prepared.

Curling property Moisture permeability Light fastness TVOC Example 1 ○ ○ ○ ○ Example 2 △ ○ △ ○ Example 3 ○ △ ○ ○ Example 4 ○ ○ ○ ○ Example 5 ○ ○ ○ ○ Example 6 ○ ○ ○ ○ 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 the amount of TVOC (volatile organic compound) and HCHO (formaldehyde) emissions, which is good if TVOC is less than 0.1 mg / m 2 · h and HCHO is less than 0.015 mg / m 2 · h (○), and TVOC 0.09 to 0.12 mg / m 2. In the case of h or HCHO 0.013-0.017 mg / m 2 · h, normal (Δ), 0.1 mg / m 2 · h or more and HCHO 0.015 mg / m 2 · h or more are evaluated as bad (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: board layer
120: adhesive layer
130: resin layer
140: print layer
150: Surface treatment layer

Claims (26)

Board layer;
An adhesive layer formed on the board layer; And
And a resin layer formed on the adhesive layer.
The adhesive layer and the resin layer include c-PLA and a-PLA blended resin,
The resin layer is 10 to 50 parts by weight of the non-phthalate plasticizer, 1 to 10 parts by weight of the acrylic copolymer, 0.1 to 8 parts by weight of stearic acid, carbonic acid based on 100 parts by weight of the resin blended with the c-PLA and a-PLA. Biodegradable panel further comprises 50 to 150 parts by weight of calcium and 0.2 to 5 parts by weight of crosslinking agent.
Board layer;
An adhesive layer formed on the board layer;
A resin layer formed on the adhesive layer; And
And a printing layer formed on the resin layer.
The adhesive layer and the resin layer include c-PLA and a-PLA blended resin,
The resin layer is 10 to 50 parts by weight of the non-phthalate plasticizer, 1 to 10 parts by weight of the acrylic copolymer, 0.1 to 8 parts by weight of stearic acid, carbonic acid based on 100 parts by weight of the resin blended with the c-PLA and a-PLA. Biodegradable panel further comprises 50 to 150 parts by weight of calcium and 0.2 to 5 parts by weight of crosslinking agent.
3. The method according to claim 1 or 2,
The c-PLA and a-PLA blended resin is biodegradable panel, characterized in that using the sol form.
3. The method according to claim 1 or 2,
The c-PLA and a-PLA blended resin is blended with a bio resin, the biodegradable panel, characterized in that included in the adhesive layer and the resin 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 c-PLA and a-PLA blended resin is blended with a synthetic resin, the biodegradable panel, characterized in that included in the adhesive layer and the resin 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 delete delete delete 3. The method according to claim 1 or 2,
The adhesive layer is biodegradable panel, characterized in that the c-PLA and a-PLA blended resin comprising 10 to 40% by weight, solvent 60 to 90% by weight.
13. The method of claim 12,
The solvent is a biodegradable panel, characterized in that any one or more of MEK (methyl ethyl ketone), MIBK (methyl isobutyl ketone), acetone (acetone), ethyl alcohol (ethyl alcohol).
Board layer;
An adhesive layer formed on the board layer;
A resin layer formed on the adhesive layer; And
And a surface treatment layer formed on the resin layer.
The adhesive layer and the resin layer include c-PLA and a-PLA blended resin,
The resin layer is 10 to 50 parts by weight of the non-phthalate plasticizer, 1 to 10 parts by weight of the acrylic copolymer, 0.1 to 8 parts by weight of stearic acid, carbonic acid based on 100 parts by weight of the resin blended with the c-PLA and a-PLA. Biodegradable panel further comprises 50 to 150 parts by weight of calcium and 0.2 to 5 parts by weight of crosslinking agent.
Board layer;
An adhesive layer formed on the board layer;
A resin layer formed on the adhesive layer;
A printing layer formed on the resin layer; And
And a surface treatment layer formed on the printed layer.
The adhesive layer and the resin layer include c-PLA and a-PLA blended resin,
The resin layer is 10 to 50 parts by weight of the non-phthalate plasticizer, 1 to 10 parts by weight of the acrylic copolymer, 0.1 to 8 parts by weight of stearic acid, carbonic acid based on 100 parts by weight of the resin blended with the c-PLA and a-PLA. Biodegradable panel further comprises 50 to 150 parts by weight of calcium and 0.2 to 5 parts by weight of crosslinking agent.
16. The method according to claim 14 or 15,
The c-PLA and a-PLA blended resin is biodegradable panel, characterized in that using the sol form.
16. The method according to claim 14 or 15,
The c-PLA and a-PLA blended resin is blended with a bio resin, the biodegradable panel, characterized in that included in the adhesive layer and the resin layer.
18. The method of claim 17,
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)).
16. The method according to claim 14 or 15,
The c-PLA and a-PLA blended resin is blended with a synthetic resin, the biodegradable panel, characterized in that included in the adhesive layer and the resin layer.
20. The method of claim 19,
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 delete delete delete 16. The method according to claim 14 or 15,
The adhesive layer is biodegradable panel, characterized in that the c-PLA and a-PLA blended resin comprising 10 to 40% by weight, solvent 60 to 90% by weight.
26. The method of claim 25,
The solvent is a biodegradable panel, characterized in that any one or more of MEK (methyl ethyl ketone), MIBK (methyl isobutyl ketone), acetone (acetone), ethyl alcohol (ethyl alcohol).

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