KR101854321B1 - Eco-friendly adhesive composition for bonding finishing foil, and method for manufacturing the same - Google Patents

Abstract

The present invention relates to an eco-friendly adhesive composition for bonding a finishing foil and a preparation method thereof. The eco-friendly adhesive composition of the present invention may be formed by preparing PVAc, PAV, and PLA as raw materials at a weight ratio of PVAc:PAV:PLA = 1:0.8 to 0.9:0.2 to 0.3, adding 20 to 25 parts by weight of foaming type polyethylene particles, 1 to 10 parts by weight of PHA resin, 3 to 20 parts by weight of a water-soluble adhesive (methyl cellulose), 10 to 20 parts by weight of a moisturizer (glycerin) and 2 to 5 parts by weight of a drying agent (ester) as primary additional components to 100 parts by weight of the total weight of PVAc, PAV and PLA, and adding 60 to 65 parts by weight of a filler and 4 to 7 parts by weight of a thickener as secondary additional components to 100 parts by weight of the total weight having the primary additional components added thereto. Therefore, the present invention may provide effects that a working environment is improved since the one-component type eco-friendly adhesive composition is applied to the production of an aqueous eco-friendly adhesive composition when applying an one-component type eco-friendly adhesive composition for bonding the finishing foil to bonding of finishing foils including finishing foils for wooden furniture, and that labor-saving of a line can be made by changing a process of coating an adhesive twice to a process of coating the adhesive once. Further, the present invention may provide an effect that the raw materials are applicable to an existing hot press process as they are since the raw materials are environmentally friendly.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an eco-friendly adhesive composition for bonding a finishing foil,

The present invention relates to an eco-friendly adhesive composition for bonding a finishing foil, and more particularly, to an eco-friendly adhesive composition for bonding a finishing foil to a finishing foil including wood furniture, And a method for producing the same, and to an eco-friendly adhesive composition for adhering a finishing foil, which makes it possible to increase the strength of a line by applying the adhesive twice.

Currently, two-component urea melamine adhesives are used for adhesives for synthetic resin films and finishing paper foils because of their mechanical workability and initial adhesion.

Accordingly, in the related field, it is required to develop a technology for replacing existing adhesives with eco-friendly, one-component type, easy to use, and exhibiting quality characteristics such as initial adhesive strength.

Korean Patent Application No. 10-2007-0062871 entitled " METHOD FOR MANUFACTURING A HIGH-VISIBLE FLUORESCENT / AXIS-LIGHTING POLYURETHANE FILM WITH ENHANCED CONTRAST AND STRENGTH ) "

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and it is an object of the present invention to provide an environmentally friendly adhesive composition for bonding a one-part finishing foil to a finishing foil including wood furniture, An adhesive composition for bonding a finishing foil, and a method for manufacturing the same.

The present invention also provides an eco-friendly adhesive composition for adhering a finishing foil that is eco-friendly and can be applied as it is to existing hot press processes, and a method for manufacturing the eco-friendly adhesive composition.

However, the objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

In the present invention, PVAc, PAV and PLA are prepared as raw materials, and PVA, PAV and PLA are mixed together in a weight ratio of PVAc: PAV: PLA = 1: 0.8 to 0.9: 20 to 25 parts by weight of a foamed polyethylene particle, 1 to 10 parts by weight of a PHA resin, 3 to 20 parts by weight of a water-soluble adhesive (methyl cellulose), 10 to 20 parts by weight of a moisturizing agent (glcerine) And 2 parts by weight to 5 parts by weight of a drying agent were added as the first additional components and 60 to 65 parts by weight of the filler and 4 parts by weight of the thickener were added to 100 parts by weight of the total weight added with the first additional component By weight to 7 parts by weight as a second additional component.

In the present invention, 24 to 25 parts by weight of carbon fiber, 7 to 10 parts by weight of a flame retardant, 8 parts by weight of an ultraviolet screening agent And 13 parts by weight of a surface protecting agent and 2 parts by weight to 3 parts by weight of a surface protective agent were added as a third additional component and 30 parts by weight to 40 parts by weight of distilled water was added to 100 parts by weight of the total weight of the third additional component To provide an adhesive composition for bonding a finishing foil.

An eco-friendly adhesive composition for bonding a finishing foil according to an embodiment of the present invention and a method for producing the eco-friendly adhesive composition according to an embodiment of the present invention can be applied to a finishing foil bonding for wood furniture, And it is possible to apply one application in two application of the adhesive, so that it is possible to provide an effect that the line can be enriched.

In addition, the eco-friendly adhesive composition for bonding a finishing foil according to another embodiment of the present invention and its manufacturing method can provide an effect that the raw material is eco-friendly and can be directly applied to a conventional hot press process.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flow chart showing the overall manufacturing process of an environmentally friendly adhesive composition for bonding a finishing foil according to an embodiment of the present invention. FIG.
FIG. 2 is a flowchart showing an adhesive composition manufacturing process (S10) in step S10 in the entire manufacturing process of the environmentally friendly adhesive composition for bonding the finishing foil of FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a detailed description of preferred embodiments of the present invention will be given with reference to the accompanying drawings. In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

The eco-friendly adhesive composition for bonding a finishing foil according to an embodiment of the present invention comprises PVAc, PAV, and PLA in a weight ratio of 1: 0.8 to 0.9: 0.2 to 0.3 as a raw material, 20 to 25 parts by weight of foamed polyethylene particles, 1 to 10 parts by weight of a PHA resin, 3 to 20 parts by weight of a water-soluble adhesive (methyl cellulose), 10 to 20 parts by weight of a moisturizer, 2 to 5 parts by weight of a drying agent 60 to 65 parts by weight of a filler and 4 to 7 parts by weight of a thickener were added as a second additional component to 100 parts by weight of the first addition of the first additional component, 24 to 25 parts by weight of carbon fibers, 7 to 10 parts by weight of a flame retardant, 8 to 13 parts by weight of an ultraviolet screening agent and 2 to 3 parts by weight of a surface protective agent are blended and finally 30 to 40 parts by weight A can be formed by the addition of distilled water.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flow chart showing the overall manufacturing process of an environmentally friendly adhesive composition for bonding a finishing foil according to an embodiment of the present invention. FIG. FIG. 2 is a flowchart showing an adhesive composition manufacturing process (S10) in step S10 in the entire manufacturing process of the environmentally friendly adhesive composition for bonding the finishing foil of FIG.

Referring to FIG. 1, an adhesive composition manufacturing process (S10), a coating process (S20), a finishing foil bonding process (S30), and a hot press process (S40) may be included.

Referring to FIG. 2, the adhesive composition of step S10 is prepared by mixing polyvinyl acetate (PVAc), polyvinyl alcohol (PAV) and polylactic acid (PLA) at a weight ratio of 1: 0.8 to 0.9: 0.2 to 0.3 (S11).

Here, the PVA can be prepared as a general mixed or naturally decomposed capsule type on the surface of the mixed solution of PVAc and PLA, and the capsule formed as a natural decomposition capsule type contains a diluent, so that the PVA must be uniformly distributed over the entire surface of the mixed solution of PVAc and PLA It is not necessarily distributed, and in some cases, there may be a site where the encapsulated PVA is not mixed locally. However, PVA may preferably be distributed in an amount of 60% or more of the entire surface area of the mixed solution of PVAc and PLA.

The diluent used in the dissolution of the capsules used herein may be one which is typically used to reduce the viscosity of the PVA-based resin in the PVAc and PLA mixed solution, or in one embodiment of the present invention, styrene or creep may be adversely affected A low molecular weight, polymeric water reactive composition capable of functioning as a polymer reactive diluent useful for structural adhesives can be utilized to prolong the duration of action of the structural adhesive without the use of a polymeric reactive diluent.

That is, the diluent may be added to the active time for the production of the mixture of step S12 by utilizing a polymer reactive diluent between 5 and 6 wt% based on the total amount of PVAc (Polyvinyl Acetate), PAV (Polyvinyl Alcohol), PLA (Polylactic Acid) Can be provided.

In the present invention, when the content of PVA is too small, the desired binding force can not be exerted. On the other hand, when the content is too large, the content of PVAc and PLA is relatively decreased, stress due to volume change can not be eliminated and adhesiveness may be deteriorated. On the other hand, if the content of PVAc and PLA is less than the above-mentioned weight ratio, the elongation of the adhesive may be insufficient, and if the content of PVAc and PLA is excessively larger than the above-mentioned weight ratio, separation of the adhesive from the object may be caused due to high affinity. Therefore, it is possible to exhibit excellent bonding force between PVAc (Polyvinyl Acetate), PAV (Polyvinyl Alcohol), PLA (Polylactic Acid) and the object to be coated in consideration of the kind of object to be attached, PVAc, PAV, and PLA in a weight ratio of 1: 0.8 to 0.9: 0.2 to 0.3.

According to another embodiment of the present invention, in the case of a finishing foil in which volume expansion can occur above a reference value, the content of PVAc and PLA having an excellent elongation can be relatively increased. On the contrary, in the case of a finishing foil It is possible to increase the content and thickness of PVA relatively.

Meanwhile, the PLA used in the present invention is a thermoplastic polyester prepared by polymerizing lactide or lactic acid obtained by fermenting plants such as renewable corn, which is prepared to perform an eco-friendly polymer and is free of fossil resource depletion There is also an eco-friendly characteristic that can be easily disassembled by reclamation after use.

PLA can be prepared by polymerizing lactic acid or lactide, and if necessary, a glycol compound such as ethylene glycol or propylene glycol, a dicarboxylic acid such as ethanedioic acid or terephthalic acid, glycolic acid or 2-hydroxy Hydroxycarboxylic acids such as benzoic acid or lactones such as caprolactone or propiolactone. The PLA may be classified into D, L-PLA, meso-PLA, D-PLA, L-PLA and the like in the present invention. Can be mixed and used.

After step S11, 20 to 25 parts by weight of foamed polyethylene particles, 1 to 10 parts by weight of PHA (polyhydroxylalkanoate) resin, 1 to 10 parts by weight of water-soluble adhesive (methyl cellulose) are added to 100 parts by weight of PVAc, PAV, 3 to 20 parts by weight, 10 to 20 parts by weight of a moisturizing agent (glcerine) and 2 to 5 parts by weight of a drying agent (S12).

The foamed polyethylene particles may be formed by using a raw material of polyethylene and blending with foaming type polyethylene by a screw method together with a foaming agent, and then forming the foamed polyethylene into a solid form and pulverizing it into fine particles. Eco-friendly adhesive composition for bonding a finishing foil to be finally prepared has a weight average molecular weight of polyethylene of 130,000 g / mol or more and a melt index of 0.3 to 7 g / 12 min (150 DEG C) for adhesion to an object to be attached and improving tensile strength upon drying The foamed polyethylene preferably has a melt index of 0.3 to 7 g / 12 min, a melt index of 5.7 or more, and a melt index of 35 mN or more, based on 100 parts by weight of the polyethylene- And 12 to 23 parts by weight of a foaming agent.

When the content of the blowing agent used for producing the foamed polyethylene is more than 23 parts by weight, rigidity, heat resistance and surface hardness are significantly lowered, which is not preferable because it is unsuitable for the application of an insulating material. When the content is less than 12 parts by weight, , The impact characteristics are deteriorated and it is not preferable. It is preferable that sodium bicarbonate (NaHCO ₃ ) is mainly used as a chemical foaming agent mainly used.

In another embodiment of the present invention, the polyethylene for preparing the foamed polyethylene mixture may be used alone or may be used after a foaming process which is formed of a polyethylene mixture. Here, the polyethylene mixture may be a resin composition comprising 25 to 30 parts by weight of an ethylene vinyl acetate copolymer (EVA) and 10 to 15 parts by weight of a polyurethane with respect to 100 parts by weight of polyethylene, The synthetic resin material exhibits improved performance in terms of tensile strength, flexural strength, load deformation temperature and Izod impact strength due to the resin using only polyethylene, and the cost of the manufacturing can be reduced because the composition material itself is inexpensive.

PHA resin is a generic name of hydroxy acid polyester having various carbon side chains. PHA resin is produced by the polymerization of D (-) - 3-hydroxy fatty acid CoA by a polymerase in the granular membrane, but recently, in some bacteria, a polymer of hydroxy acid having side chains of various lengths, PHA is found as a copolymer with roxybutyrate. The PHA resin in the mixed resin is an abbreviation of Poly Hydroxyl Alkanoate. It is a generic name of hydroxy acid polyester having various carbon side chains. PHA resin is produced by the polymerization of D (-) - 3-hydroxy fatty acid CoA by a polymerase in the granular membrane, but recently, in some bacteria, a polymer of hydroxy acid having side chains of various lengths, PHA is found as a copolymer with roxybutyrate. When such a PHA resin is mixed with the PVAc, PAV, and PLA mixture, flexibility can be imparted to the PLA-based raw material, thereby providing inductive properties as a final adhesive.

In step S12, while mixing the PVAc, PAV, and PLA mixture with the foamed polyethylene particles and the PHA resin, while stirring the water-soluble adhesive (methyl cellulose) in a mixer while adding the glcerine, To 35 캜 and stirring is maintained for about 30 minutes, followed by mixing with a drying agent before completion of the polymerization. If the amount of the drying agent is less than 2 parts by weight based on 100 parts by weight of the PVAc, PAV and PLA mixture, the final eco-friendly adhesive for bonding the finishing foil is not solidified. On the other hand, There may occur a problem that the solidification progresses significantly in the course of proceeding from the step S13 to the step S15.

The ester used in the present invention may be a mixture of oleic acid and stearic acid in a ratio of 1: 0.5 to 1.

After step S12, 60 to 65 parts by weight of a filler and 4 to 7 parts by weight of a thickener are added to 100 parts by weight of the first mixture and stirred to produce a second mixture (S13). More specifically, the first mixture produced in step S12, such as PVAc (Polyvinyl Acetate), PAV (Polyvinyl Alcohol), PLA (Polylactic Acid), foamed polyethylene particles, PHA (polyhydroxylalkanoate) Add a filler and thickener to a mixture of cellulose, glcerine, and drying agent.

The filler used in step S13 is at least one selected from the group consisting of calcium carbonate, talc, clay, silica and acidic clay.

In an embodiment of the present invention, 60 to 65 parts by weight of a filler is added to 100 parts by weight of the first mixture, which is a raw material of the one-pack type adhesive composition, in order to improve the moldability of the adhesive and the moisture- Can be used. If the amount of the talc is less than 60 parts by weight, the effect of improving dimensional stability is deteriorated. If the amount of the talc is more than 65 parts by weight, there is a possibility that the durability and heat resistance are significantly lowered when cured.

The thickener for increasing the viscosity of the eco-friendly adhesive composition solution for final bonding of finishing foil is selected from the group consisting of silica, fumed silica, bentonite, clay, amide and cellulose, If the amount of the thickener is less than 4 parts by weight in the first mixture 100 parts by weight, the finally produced adhesive composition may flow down from the finishing foil. On the other hand, if the amount exceeds 7 parts by weight, .

After step S13, 24 to 25 parts by weight of carbon fibers, 7 to 10 parts by weight of a flame retardant, 8 to 13 parts by weight of an ultraviolet screening agent and 2 to 3 parts by weight of a surface protective agent are added to 100 parts by weight of the second mixture as an additive (S14 ).

As for the carbon fiber, the carbon fiber can be adjusted in its capacity depending on the need for conductivity between the finishing foil and the adhesive composition. The eco-friendly adhesive composition for bonding one-pack type finishing foil is prepared by adding carbon fibers to the carbon fiber- Garbon Fiber Reinforced Plastic). The carbon fiber contained in the eco-friendly adhesive composition for bonding the carbon fiber-reinforced one-part finishing foil has the advantage that it is stronger than iron, lighter than aluminum, and excellent in workability. That is, the carbon fiber having excellent fracture strength is added to the mixture of PVAc, PAV and PLA having relatively good tensile strength at the time of curing of the environmentally friendly adhesive composition for bonding one-pack type finishing foil, By adding flame retardancy to the PLA mixture and providing flame retardancy to a fire or the like which may occur in an object to be bonded, functionality such as flame retardancy and the like with high price competitiveness can be exhibited.

Next, regarding the flame retardant, the flame retardant is one selected from the group consisting of antimony molybdate, molybdenum oxide, magnesium hydroxide, and aluminum hydroxide or a mixture of two or more thereof. Particularly, aluminum hydroxide (Al (OH) ₃ ) is heat-applied to an environmentally-friendly adhesive composition for adhering a cured liquid type finishing foil and when the temperature exceeds 500 ° C., micropores are changed into a large number of active alumina, Dioxins, HCl (HCl), and it absorbs harmful substances such as HCl. It absorbs heat during thermal decomposition and has a cooling effect. It is nonflammable and has excellent water resistance and acid resistance. In addition, the flame retardant effect can be expected to be improved by using the above flame retardants in combination.

Next, 34 to 37 parts by weight of titanium dioxide (TiO ₂ ) having an average particle size of 100 to 1000 μm as a powder of 100 parts by weight of polyethylene resin or aqueous acrylic synthetic resin, 33 to 35 parts by weight of zinc oxide (ZnO ₂ ) And 25 to 27 parts by weight of a silane compound of gamma aminoethylaminopropyltrimethoxysilane are mixed to give a tackiness. To the mixture is added 2 to 5 parts by weight of a silicone oil having a pH of 5 to 7, a surfactant 2 to 5 parts by weight are mixed and stirred at 15 ° C to 25 ° C for 30 minutes to modify the surface to produce an ultraviolet screening agent. At this time, if the flatness degree of titanium dioxide (TiO ₂ ) is 100 μm or less, the region of UV-B (290-320 nm) is effectively blocked. If the flatness of titanium dioxide (TiO ₂ ) -320 nm) can be effectively blocked. In addition, when the silicone oil is acidic at pH 5 or less, the problem of poor adhesion of the ultraviolet screening agent may occur.

Since the surface protective agent contains an inorganic polymer material, it has an excellent adhesive strength and a high water resistance, so that it can be coated with an eco-friendly adhesive composition for bonding a one-part finishing foil even in a wet state and does not peel off or peel off by immersion in water . In addition, since the surface protective agent is not discolored by ultraviolet rays, it is suitable for use in construction of concrete structures such as bridges, bridges, harbors, and playgrounds that are exposed to direct sunlight and is changed into incombustible material after curing. Since the surface protective agent is a one-pack type paint, it can be easily cured without using a separate curing agent, which is advantageous in that it is easy to use and is not harmful to human body.

After step S14, 30 to 40 parts by weight of distilled water is added to 100 parts by weight of the blend, and the mixture is heated and stirred at a temperature of 100 to 150 DEG C for 1 to 2 hours (S15).

After the step S14, the heated and stirred composition is vacuum-defoamed to complete the formation of the adhesive composition (S16).

Meanwhile, steps S20 to S40 after the step S10 including the steps S11 to S16 will be described.

That is, the environmentally friendly adhesive composition for bonding the finishing foil produced according to step S10 is applied to the object to which the finishing foil is attached in step S20. In another embodiment of the present invention, the adhesive described in step S10 The adhesive in the manufacturing step may be preferably composed of a hot melt type adhesive in terms of process and manufacturing cost.

Accordingly, the eco-friendly adhesive composition for bonding the finishing foil must secure adhesion to the finishing foil (such as a synthetic resin film and a finishing paper foil) to different kinds of objects to be adhered, and further, a mechanical engagement between the object to be adhered and the finishing foil . When any interface is observed from the microscopic side, the interface is uneven and has surface states such as projections, grooves, and scratches. At this interface, the environmentally friendly adhesive composition for bonding the liquid finishing foil is impregnated and hardened or solidified, such as protrusions or grooves at the interface. The eco-friendly adhesive composition for bonding a hardened or solidified finishing foil is mechanically engaged and has the same effect as if a pile was placed on the ground or an anchor was caught in the sea.

The mechanical engagement is referred to as anchoring, and by such mechanical engagement, it is possible to strongly form an adhesive force between the environmentally friendly adhesive composition for bonding the finishing foil, the finishing foil and the object to be adhered.

As described above, it is preferable to perform surface treatment such as etching or corona treatment on the adhesion surface between the finishing foil and the object to be adhered in order to secure an excellent adhesion.

Since the anchoring alone can not accommodate the adhesive force and its principle, the material and principle of the eco-friendly adhesive composition for bonding the finishing foil should be considered according to the material to which the eco-friendly adhesive composition for adhering the finishing foil adheres.

That is, between the finishing foil and the environmentally friendly adhesive composition for bonding the finishing foil, the bonding principle between the polymers must be considered. Not only the mechanical merge effect but also the adhesion between the polymer interfaces can be thermodynamically compatible or partially compatible with each other due to the diffusion effect of the polymer chain between the interface and the interface The diffused polymer chains form entanglement with other polymer chains.

When the two interfaces are separated by an external force, the entanglement of the polymer chain is loosened or the polymer chain is destroyed, which is a factor of forming the adhesion force.

The method of applying the environmentally friendly adhesive composition for bonding the finishing foil to the object to which the finishing foil is attached in step S20 can be roughly divided into two types, that is, a liquid type and a solid type adhesive. The method of applying the environmentally friendly adhesive composition for bonding the liquid type finishing foil can be performed by a method such as spraying or bar coating. In the case of a solid type adhesive, the adhesive can be usually melted using a heating mechanism It is preferable that the solid adhesive is adhered by a thermal lamination method using a product made in the form of a film.

After the step S20, the hot press process S40 is performed through the finishing foil joining process S30, that is, the finishing foil is heated at the same time as or after the bonding process to the object to which the adhesive is applied, When the temperature is also higher than 100 ° C, the finishing foil may be deformed by the mixture of PVAc, PLA and PVA.

One-pack type finishing foil bonded friendly adhesive composition, if the basis weight of the finishing foil 30 at least 50g / m ² is less than 7 to 12g / m ² amount, the basis weight of the finishing foil, the amount, if more than 50 70g / m ² is less than 10 to 18 g / m < ² >, and the basis weight of the finishing foil is not less than 70 and not more than 100, the amount of the adhesive composition may be varied in the amount of 17 to 25 m < ² >

As a result of the test, the eco-friendly adhesive composition for bonding a one-part finishing foil having the above structure has a water resistance of D ₂ grade or higher, a heat resistance of 250 ° C, and excellent solvent resistance. Further, it was found that the hardness at room temperature was maintained, shrinkage and expansion were small, and the hardness was too high at the time of thermocompression bonding, so that the finishing foil was not deformed and the physical properties were maintained even after prolonged use.

On the other hand, as shown in Table 1 below, it is not environmentally friendly because it is a two-component urea melamine-based product for a conventional finishing foil.

However, the eco-friendly adhesive composition for bonding the one-part finishing foil according to the present invention is eco-friendly, and is one-pack type, convenient in the field work, and has excellent physical properties such as initial adhesive strength.

Existing elements / Melamine series Invention chief ingredient Urea / melamine resin system Modified PVAC system (Eco-friendly) Appearance 2-pack type (management inconvenience) 1-part type (easy to handle and handle) Application method Shapes and spreading on stools Apply only to the board Other Can be applied to existing Hot Press process

In addition, when applying the eco-friendly adhesive composition for bonding the one-part finishing foil to the finishing foil for wood furniture, the working environment is improved by applying the water-friendly eco-friendly production, and the application of the adhesive can be applied once twice. It is possible.

As described above, preferred embodiments of the present invention have been disclosed in the present specification and drawings, and although specific terms have been used, they have been used only in a general sense to easily describe the technical contents of the present invention and to facilitate understanding of the invention , And are not intended to limit the scope of the present invention. It is to be understood by those skilled in the art that other modifications based on the technical idea of the present invention are possible in addition to the embodiments disclosed herein.

Claims (2)

(PVAc), PVA (Polyvinyl Acetate), PAV (Polyvinyl Alcohol) and PLA (Polyactic Acid) at a weight ratio of 1: 0.8 to 0.9: 0.2 to 0.3. PVA and PLA mixed solution are distributed in more than 60% of the total surface area. The diluent used in the degradation of the capsules is PVA and PLA mixed solution, Polymeric moisture reactive composition that serves as a polymer reactive diluent useful for structural adhesives, which is used to reduce the viscosity of polyvinyl alcohol (PVA), PVAV (Polyvinyl Alcohol), PAV A first step of utilizing a polymer reactive diluent between 5 and 6 wt% based on the total amount of PLA (PolyLactic Acid);
20 to 25 parts by weight of foamed polyethylene particles, 1 to 10 parts by weight of a PHA (polyhydroxyalkanoate) resin, 3 to 20 parts by weight of a water-soluble adhesive (methyl cellulose), 100 parts by weight of a water- 10 to 20 parts by weight of a moisturizer and 2 to 5 parts by weight of a drying agent are mixed to produce a first mixture. The foamed polyethylene particles are prepared by using a polyethylene raw material, Type polyethylene is formed and then formed into a solid form and pulverized into fine particles. The eco-friendly adhesive composition for bonding finishing foil, which is finally prepared, is adhered to an object to be attached, and the weight average molecular weight A melt index of 0.3 to 7 g / 12 min (150 DEG C), a molecular weight distribution (PI) of 5.7 or more, a melt strength of 35 mN or more 12 to 23 parts by weight of a blowing agent are blended with 100 parts by weight of a polyethylene-based raw material. The polyethylene for preparing a foamed polyethylene mixture is used alone or after being foamed after being formed of a polyethylene mixture. The polyethylene mixture is composed of 100 parts by weight of polyethylene 25 to 30 parts by weight of an ethylene-vinyl acetate copolymer (EVA) and 10 to 15 parts by weight of a polyurethane are used for a mixture of PVA, PAV and PLA, and a mixture of foamed polyethylene particles and PHA resin , And water-soluble adhesive (methyl cellulose) were mixed in a mixer while adjusting the temperature of the mixer to 30 to 35 ° C while stirring the mixture for 30 minutes while adding a moisturizing agent (glcerine) ), And the ester is obtained by mixing oleic acid and stearic acid at a ratio of 1: 0.5 to 1 A second step of using;
The filler is at least one selected from the group consisting of calcium carbonate, talc, clay, silica and acidic white clay. The filler is mixed with 100 parts by weight of the first mixture, And 60 to 65 parts by weight of a filler is used for 100 parts by weight of the first mixture, which is a raw material of the one-component adhesive composition, to improve the moldability of the adhesive and the moisture resistance, The thickening agent for increasing the viscosity of the adhesive composition solution is any one selected from the group consisting of silica, fumed silica, bentonite, clay, amide and cellulose, or a mixture of two or more thereof. A third step of using a weight part;
The carbon fiber is mixed with 24 to 25 parts by weight of carbon fiber, 7 to 10 parts by weight of a flame retardant, 8 to 13 parts by weight of an ultraviolet screening agent, and 2 to 3 parts by weight of a surface protective agent per 100 parts by weight of the second mixture, The amount of the environmentally friendly adhesive composition for bonding the one-part finishing foil is adjusted by the conductivity between the compositions. The carbon fiber is added and mixed to obtain a resin corresponding to a carbon fiber reinforced plastic (CFR). The flame retardant Antimony molybdate, molybdenum oxide, magnesium hydroxide and aluminum hydroxide. The ultraviolet screening agent has an average particle size of 100 to 1000 占 퐉 based on 100 parts by weight of the polyethylene resin or the aqueous acrylic resin. titanium dioxide (TiO ₂₎ 34 to 37 parts by weight of zinc oxide (ZnO ₂₎ after mixing 33 to 35 parts by weight, And 25 to 27 parts by weight of a silane compound of gamma aminoethylenaminopropyltrimethoxysilane are mixed to give a tackiness, and 2 to 5 parts by weight of a silicone oil having a pH of 5 to 7 and 2 to 5 parts by weight of a surfactant are added to the mixed solution Mixing and stirring the mixture at 15 ° C to 25 ° C for 30 minutes to modify the surface to produce an ultraviolet screening agent; And
30 to 40 parts by weight of distilled water is added to 100 parts by weight of the blend of the fourth step and heated and stirred at a temperature of 100 to 150 DEG C for 1 to 2 hours and the composition after heating and stirring is vacuum degassed A fifth step of completing the production of the adhesive composition;
The eco-friendly adhesive composition for bonding the finishing foil produced according to the fifth step is applied to an object to which the finishing foil is adhered, and the adhesion surface between the finishing foil and the object to be adhered is etched and corona treated The surface treatment is performed to anchor according to the mechanical engagement and the method of applying the eco-friendly adhesive composition for bonding the finishing foil to the object to which the finishing foil is attached is largely divided into two types using a liquid type and a solid type adhesive, A method of applying an eco-friendly adhesive composition for bonding a finishing foil may be a method of spraying or bar coating or a method of using an eco-friendly adhesive composition for bonding a finishing foil in the form of a film in the case of a solid adhesive A sixth step of bonding by a thermal lamination method; And
The hot pressing process is performed through the finishing foil bonding process of the sixth step and the finishing foil is heated at 100 DEG C or below by a hot press at the same time as or after the bonding process to the object to which the adhesive is applied The amount of the eco-friendly adhesive composition for bonding the one-pack type finishing foil is preferably 7 to 12 g / m ² when the basis weight of the finishing foil is 30 to 50 g / m ² , and the basis weight of the finishing foil is 50 to 70 g / m 2 ^A quantity of 10 to 18 g / m < ² > when the finishing foil is less than ^2, and an amount of the adhesive composition varying from 17 to 25 m < ² > Wherein the adhesive layer is formed of a thermoplastic resin. delete

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