KR101016040B1 - Adhesive sheet containing wood-powder for board - Google Patents

Abstract

The present invention relates to a wood powder containing sheet paper that is attached to the surface of the MDF panel, more specifically, containing wood powder for preventing static electricity, increasing the adhesive force, the adhesive or harmful substances applied between the MDF panel and the sheet paper surface It relates to a sheet sheet paper having a barrier layer for blocking the penetration into the shape layer of.

The present invention is characterized in that the plate sheet consisting of a base layer and a shape layer stacked on top of the base layer is interposed between the base layer and the shape layer with a wood powder containing layer mixed with wood powder and synthetic resin to prevent static electricity.

And between the shape layer and the wood powder containing layer is characterized in that the blocking layer for blocking the penetration of harmful components into the shape layer.

Board, Sheet, Wood, Block, Static, Surfactant, Breeding

Description

Wood powder-containing sheet paper {ADHESIVE SHEET CONTAINING WOOD-POWDER FOR BOARD}

The present invention relates to a wood powder containing sheet paper, and more particularly, containing a wood powder for the prevention of static electricity, and a plate having a barrier layer for preventing the penetration of harmful substances such as adhesives or surfactants into the surface layer It relates to sheet paper.

The present invention relates to a wood powder containing sheet paper that is attached to the surface of the MDF panel, and more particularly, containing wood powder for preventing static electricity, increasing the adhesive force, and adhesive or harmful substances applied between the MDF panel and LPL sheet paper It is related with the sheet | seat sheet paper provided with the barrier layer which interrupts penetration into the surface-shaped layer.

Solid wood itself is not only expensive, but also heavy and invasive when water penetrates, so MDF panels are often used for furniture. The MDF panel is inexpensive and has a light advantage, but the synthetic board powder is used as a glue and processed into a desired plate material. When such powder powder enters a human lung or a glue component is leaked to the outside, the human body It is common to have adverse health effects.

Therefore, the sheet paper is bonded on the MDF panel surface, and the bonding method is a sheet paper having a certain shape is bonded by a bond, which is coated on the MDF surface with an adhesive and then placed on the sheet of paper. When the vacuum chamber is applied to the chamber after being put in a vacuum state, the sheet paper and the MDF are strongly adhered to each other. This is called a membrane method, and currently, a membrane method is used to bond the MDF and the sheet paper.

In general, in order to bond MDF and sheet paper by the membrane method, a low pressure film that can be easily stretched and contracted under vacuum should be used. This is called LPL (Low Pressure Laminate).

The present invention relates to a LPL attached to the membrane method on the MDF, the conventional LPL has the following problems.

First, currently used LPL sheet sheet is attached to the plate by the high temperature heat pressure by the membrane method, the adhesive strength is weak.

Therefore, in order to increase the adhesive force between sheet paper and plate, increase the vacuum pressure during membrane process, and if necessary (when the adhesive force is weak to attach (glue) to the plate with only the resin eluted from the sheet by high temperature and heat pressure), additionally Often use adhesives.

Increasing the vacuum pressure during the membrane process increases the risk of damage due to excessive expansion (expansion) of sheet paper,

The eluting resin contained in the sheet of paper (including a separate adhesive when used) penetrates into the surface layer and a bridging phenomenon occurs that contaminates the surface of the sheet of paper.

Harmful ingredients penetrated into the form layer are released into the air, giving off a bad smell and harming the human body,

Therefore, when a separate adhesive is used to increase the adhesive force between the sheet paper and the sheet or when the vacuum pressure is increased during the membrane method, a means for preventing harmful components from penetrating into the shape layer and leaking to the outside is required. The sheet sheet paper which it has was not provided.

Second, the shape layer constituting the LPL is not uniformly stretched during the membrane process but is inhomogeneously stretched, so there is no way to compensate for the poor appearance of the surface. No. 384187, "Decorative Sheet Paper with Printed Pattern PPI Synthetic Paper on PET Film,"

Such sheet paper is generally composed of a shape layer (print pattern skin synthetic paper), a base layer (aluminum film layer), and a surface layer (pet film and UV coating layer), and only takes the configuration of adhering to a plate by an adhesive. In the case of the new model, since the film layer made of aluminum is composed of a base layer, the base layer and the aluminum layer have a problem in that the elongation of the base layer is different, so that the shape layer is inhomogeneously stretched.

Third, the panel to which the LPL sheet is attached has a problem that the panel surface is contaminated due to static electricity generated from the surface.

Low pressure laminate (LPL) sheet paper has the advantage of having a thin thickness and the resin impregnated with the sheet due to high temperature and heat pressure, so that a separate adhesive may not be used when attaching to the sheet, but it is weak to static electricity. Frequent correctors). If static electricity is generated frequently, foreign matters floating around the sheet become contaminated with the surface of the sheet by static electricity.

Therefore, LPL sheet paper generally contains a surfactant that lowers surface resistance and volume resistance to suppress the generation of static electricity. However, the surfactant has a limitation in suppressing the generation of static electricity. It has a problem of causing peeling phenomenon.

Therefore, a means for preventing static electricity of sheet paper is needed.

Fourthly, LPL is generally used synthetic resin, preferably melamine-based resin is used for stretching in vacuum, but this synthetic resin-based LPL is not only harmful to the human body due to the characteristics of the material, but also heterogeneous materials to bond with MDF There is a problem in that smell due to the limitation of using a large amount of adhesive due to phosphorus and the resin eluted during the lamination process.

In general, there is a technique of containing wood powder in a resin-based sheet, especially in the tile field, which is harmful to odors and human body. As such prior art, a method of manufacturing a wood powder-containing flooring material filed and registered by the present applicant (patent registered) 10-0717602) and a method for producing wood powder-containing flooring (Patent No. 10-0698358) are disclosed.

In the case of the patent to overcome the shortcomings of the synthetic resin flooring, by providing wood to the body layer to provide an environmentally friendly tile, there is a problem of thickness, material, elongation to use this as LPL wood sheet paper, in the case of tiles If it is stretched, the warping phenomenon may occur during lamination on the floor, so it should not be stretchable.

The present applicant is to solve the problems of the conventional LPL sheet paper described above and the applicant to improve the configuration of the wood-containing flooring material to create a sheet sheet paper that is attached to the MDF surface.

The present invention has been made to solve the above problems,

First, an object of the present invention is to provide a wood powder containing layer that primarily absorbs the resin of the base layer eluted during the membrane process, and at the same time to provide a harmful component blocking portion between the shape layer and the wood powder containing layer of the resin of the base layer eluted It is to provide a wood-containing sheet material that can block the secondary.

In addition, the present invention can further prevent the static electricity by absorbing caution moisture by additionally configuring the wood flour containing layer, and when the surfactant is added to the wood flour containing layer can prevent the phenomenon of surfactant bridging To provide a wood-containing sheet material that can reduce the static electricity.

In addition, the present invention is to provide a wood-containing sheet material that can be provided to the same as the extent to which the shape layer is stretched during the membrane process by providing a harmful component blocking layer on the bottom of the shape layer.

Sheet sheet paper that is attached while being stretched in a vacuum on the adhesive upper surface applied to the MDF upper surface of the present invention for achieving the above object

A base layer made of synthetic resin; Wood powder containing layer that is attached to the upper surface of the base layer containing a wood powder capable of containing a certain amount of water; A shape layer attached to an upper surface of the wood powder containing layer; It is attached to the top surface of the shape layer is a coating layer to prevent scratches.

In addition, the present invention is characterized in that the harmful component is interposed between the coating layer and the wood powder containing layer to prevent harmful components from being penetrated into the shape layer and the same as the shape layer.

In addition, the harmful component preventing means of the present invention is made of a base layer to prevent the harmful components of the wood flour-containing layer is penetrated, and to be stretched in the same manner as the shape layer, characterized in that the shape of the shape layer is transferred to the upper surface of the base layer. do.

In addition, the base layer of the present invention; Polypropylene (PP), polyethylene (PE), ethylene-vinyl acetate copolymer (EVA), one or both of the barrier layer, OPP (Opient Oriented Poly Propylene), a group thereof; Or melamine, xylene, aniline resin, or a sheet consisting of these groups is attached.

In addition, the barrier layer of the present invention is characterized in that it is made of any one or a combination of nickel, copper, cadmium, aluminum.

In addition, the base layer, the base layer wood-containing layer, the coating layer of the present invention is characterized in that made of the same material.

In addition, the wood powder containing layer of the present invention wood powder 30 to 80% by weight; Polyvinyl chloride, polyethylene, poly (ethylene terephthalate), polypropylene, or sulfonated polystyrene (SPS), Oriented Poly Propylene or a group thereof or melamine, xylene, aniline resins or these Characterized in that it comprises 20-70% by weight of synthetic resin consisting of a group.

In addition, the wood flour-containing layer of the present invention is characterized in that a surfactant is added.

According to the present invention, the sheet sheet paper is usually attached to the sheet by the high temperature and thermal pressure by a membrane method and exhibits a limitation in its adhesive force, but the resin of the base layer is eluted during contact with the adhesive during the high temperature and high pressure membrane process. It is absorbed by the wood flour powder of the containing layer, so that the wood powder powder and the synthetic resin which make up the wood powder containing layer are in close contact with each other and the molten resin is exposed to the outside, and the molten resin is more closely adhered to the adhesive. The panel can be more firmly bonded, and the wood flour-containing wood flour-containing layer has an effect of reducing static electricity by absorbing ambient moisture.

In addition, when the surfactant is added to the wood flour-containing layer, the harmful component blocking layer is prevented from bleeding the surfactant, thereby reducing the problem of contamination of the surface due to the bleeding of the surfactant and reducing static electricity.

In addition, by providing a harmful component blocking means between the wood flour containing layer and the shaping layer can prevent the residual amount of the eluted resin containing the resin eluted from the wood flour containing layer to be leaked to the outside has an environmentally friendly effect.

Hereinafter, with reference to the drawings will be described the present invention in more detail.

1 is an enlarged cross-sectional view of a sheet sheet paper according to an example of the present invention, Figure 2 is an exploded perspective view.

As shown in the drawing, the sheet sheet of the present invention is composed of a base layer 10, a wood powder containing layer 20, a barrier layer 30, a shaping layer 50 is sequentially stacked, the surface of the shaping layer 50 is scratched A coating layer 60 may be further formed to protect from the back.

The base layer 10, the wood powder containing layer 20, the barrier layer 30, the shape layer 50 should be made of a synthetic resin of the same material to achieve a lamination that is less than heat.

Synthetic resins are thermoplastic and thermoset, and in terms of their properties, thermoplastics are thermoplastic, and thermosets are well laminated (bonded) with thermosetting synthetic resins. Thus, the sheet paper of the present invention was unified with the same properties (thermoplastic or thermosetting) of the synthetic resin contained in the base layer 10, the wood powder containing layer 20, the blocking layer 30, and the shaping layer 50.

Thermosetting properties include phenolic resin, urea resin, melamine resin, epoxy resin, etc. In the present invention, it is waterproof, has a high hardness, is nontoxic, and includes a melamine resin that is stable to organic solvents, preferably melamine, xylene, aniline Resin is mainly used, and melamine resin is used most preferably.

Thermoplastics include polyethylene, nylon, polyacetal resins, vinyl chloride resins, polystyrenes, ABS resins, acrylic resins, polyester resins, and the like. In the present invention, the polyvinyl chloride resins are transparent, have high strength, and have high resistance to chemicals. Is included,

Polypropylene (PP), polyethylene (PE), ethylene-vinyl acetate copolymer (EVA, Ethylene-Vinyl Acetate copolymer), OPI (OPP, Oriented Poly Propylene) is preferably used.

The base layer 10 is made of a thermosetting resin phenol resin or urea resin or melamine resin or epoxy resin, or a combination thereof,

Thermoplastic resins such as polyethylene or nylon or polyacetal resins or vinyl chloride resins or polystyrene or ABS resins or acrylic resins or polyester resins, or combinations thereof.

Hereinafter, unless otherwise stated, synthetic resins are treated as being based on the components of the base layer 10.

Synthetic resin described below is used to refer to the melamine-based resin used as the material of the LPL sheet.

The base layer 10 is adhered to and adhered to the surface of the plate, and the resin is eluted by pressure during the membrane process, and the eluted resin is in intimate contact with the adhesive to bond the MDF panel and the LPL. However, the eluted resin penetrates into the wood powder containing layer adhered to the upper surface of the base layer and is absorbed by the wood powder contained in the wood powder containing layer, thereby reducing the amount of the eluting resin harmful to the human body.

In addition, the base layer 10 is impregnated with a predetermined amount of pulverized fiber so that the sheet paper is excessively stretched due to the vacuum pressure during the membrane process or the temperature change before and after the membrane process, thereby preventing the sheet paper from being damaged or deformed. It is preferable.

At this time, the ground fiber impregnated in the base layer 10 may be said to be impregnated with 10 to 40% by weight of the crushed fiber in the synthetic resin 60 to 90% by weight, more preferably 10 to 90% by weight of PVC, the synthetic resin % By weight of ground fiber is to be mixed.

The pulverized fiber may be a general fiber, that is, natural fibers or artificial fibers can be all, non-woven or woven fabrics.

The wood flour-containing layer 20 is produced by mixing wood flour and synthetic resin and pulling it out in a calendar.

Wood powder containing layer 20 is composed of about 30 to 80% by weight of wood powder and about 20 to 70% by weight of synthetic resin, in addition to adhesives, dispersants, foaming agents, stabilizers, lubricants, softeners and the like may be further included. The components of these wood flour-containing layers 20 are evenly heated and mixed through the blender and then passed through rollers to form a sheet having a predetermined thickness and then laminated with the base layer 10.

As described above, the wood powder containing layer 20 functions to absorb the resin eluted during the membrane process, but the wood powder component of the wood powder containing layer 30 has a moisturizing effect of absorbing ambient moisture. Silver has the effect of lowering static electricity by having the nature of conductivity rather than insulator.

In addition, when the amount of wood in the wood powder-containing layer 20 is small, it is preferable to add a predetermined surfactant, and the surfactant does not act as an antistatic function per se, but prevents static electricity by increasing the surface area reacting with moisture. can do.

In addition, the moisture must be absorbed in the wood powder-containing layer to prevent the moisture from being absorbed by the eluted resin and the adhesive between the surface of the MDF panel and the sheet sheet, thereby preventing the sheet sheet from being peeled off the MDF panel.

When the surfactant is contained in the wood powder-containing layer as described above, it is necessary to block the bleeding phenomenon in which the surfactant is bleeding to the outside, and the sheeting according to the present invention may be blocked by the blocking layer as described above. Has the effect of reducing the surface resistance and volume resistance.

The barrier layer 30 is formed of any one of nickel, copper, silver, potassium, magnesium, and cadmium, molded into a sheet form, for adhesion with the wood-containing layer 20, and the shape layer 50 is easily transferred. One or both sides of the barrier layer 30 should be coated with a synthetic resin.

As the synthetic resin coated on one or both sides of the barrier layer 30, polypropylene (PP), polyethylene (PE), ethylene-vinyl acetate copolymer (EVA, Ethylene-Vinyl Acetate copolymer), OPP, Oriented Poly Propylene), groups of these; Or it is preferable to use melamine, xylene, aniline resin, or resin which consists of these groups, Most preferably, it uses an opi.

Opi coated on one side or both sides of the barrier layer as described above also has the advantage that the transfer ink of the shape layer is well transferred, but as described above, the Opi has a directional orientation, so that the barrier layer and the coating is easy. Opiepi coated on the barrier layer can also improve the adhesion with the wood-containing layer.

The barrier layer supplements the prevention of static electricity by adding a surfactant when a small amount of wood powder is added to the wood powder-containing layer, and in this case, in addition to preventing the phenomenon of surfactant bridging, the following important functions are performed.

If the resin eluted during the membrane process is saturated to some extent in the wood flour containing layer, the eluted resin passes through the wood flour containing layer and penetrates into the mold layer, which not only alters the shape of the mold layer but also releases harmful components to the outside. When the barrier layer 30 is interposed between the shape layer 50 and the wood meal containing layer 50 as described above, the barrier layer 30 functions to prevent the harmful components from being exposed to the outside.

In addition, in addition to the above-described function, the blocking layer 30 may not be evenly stretched when the shape layer 50 is stretched during the membrane process, and the OPI sheet 40 is coated on both sides of the blocking layer 30. If it is, the shape layer 50 transferred to the OPP sheet is stretched like a blocking layer, thereby preventing the uneven stretching phenomenon.

The pattern layer 50 is a synthetic resin film, the surface of the material is printed on the natural material such as wood grains and flowers or various characters, such as by the transfer printing or direct printing method.

And the surface of the shape layer 50 may be further formed with a functional coating layer 60 for scratch prevention, antibacterial, UV protection and the like.

Wood flour-containing sheet material according to the present invention is produced through the following process.

Base layer softening the melamine resin sheet by heat softening (step 1),

30 to 80% by weight of wood powder, 20 to 70% by weight of melamine resin, a small amount of adhesive and a surfactant are mixed to the softened main sheet to form a wood powder-containing layer, which is passed through a heating roller and a cooling roller pair to have a predetermined thickness. Shaping the wood flour layer (step 2),

Simultaneously with step 2, melamine resin is laminated on one or both sides of the thin metal aluminum by heat and pressure to form a base layer, and then transfer the shape paper having a predetermined shape interposed on the top layer of the base layer by printing transfer method. Catch it (step 3)

Laminated softened base layer, wood-containing layer, harmful ingredient prevention layer, shape layer by heat and pressure, (Step 4)

In order to prevent scratching on the upper surface of the shape layer, a sheet material is manufactured by treating UV coating. (Step 5)

In the above description of the present invention with reference to the accompanying drawings has been described for the wood-containing sheet material having a specific component and laminated structure, the present invention can be variously modified and changed by those skilled in the art, such modifications and changes are present invention It should be interpreted as falling within the protection scope of.

1 is an enlarged cross-sectional view of a sheet of paper according to the present invention.

Figure 2 is an exploded perspective view of the sheet of paper according to the present invention.

<Description of the symbols for the main parts of the drawings>

10: base layer 20: wood powder containing layer

30: base layer 40: sheet

50: shape layer 60: coating layer

Claims (8)

A base layer made of synthetic resin; Wood powder containing layer that is attached to the upper surface of the base layer containing a wood powder capable of containing a certain amount of water; A shape layer attached to an upper surface of the wood powder containing layer; It is made, including; a coating layer attached to the top surface of the shape layer to prevent scratches, A surfactant is added to the wood flour-containing layer, The harmful ingredient prevention means It is made of a base layer to prevent the harmful components of the wood flour-containing layer to penetrate, and to be stretched in the same manner as the shape layer, the shape of the shape layer is transferred to the upper surface of the base layer, The base layer is Barrier layer; Polypropylene (PP), polyethylene (PE), ethylene-vinyl acetate copolymer (EVA), one or both of the barrier layer, OPP (Opient Oriented Poly Propylene), a group thereof; Or melamine, xylene, aniline resin or a sheet consisting of these groups is attached, The barrier layer is wood-containing sheet material, characterized in that consisting of one sheet of nickel, copper, cadmium, aluminum or a combination thereof. The method of claim 1, Wood flour-containing sheet paper, characterized in that between the coating layer and the wood powder containing layer is a harmful component is penetrated into the shape layer and the same as the harmful component preventing means to extend. delete delete delete The method according to claim 1 or 2, The base layer, wood flour containing layer, coating layer is a wood flour containing sheet, characterized in that made of the same material. The method of claim 1, wherein the wood flour containing layer Wood powder 30-80% by weight; Polyvinyl chloride, polyethylene, polyethylene terephthalate (poly (ethylene terephthalate)), polypropylene, or sulfonated olystyrene (SPS), Opied (Oriented Poly Propylene) or these groups, or 20-70% by weight of synthetic resins consisting of melamine, xylene, aniline resins or these groups Wood flour-containing sheet paper, characterized in that made. delete

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