JP2007307709A - Decorative material for building material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a decorative material for building materials which is made of a vinyl chloride resin, low in costs, and suppressed in VOC generation while maintaining excellent characteristics including processability, design, printing aptitude, lamination strength, various resistances, and flame retardancy. <P>SOLUTION: In the decorative material, patterns (2 and 3) are printed, on the pattern (2 and 3) surface of a colored vinyl chloride resin sheet (1) with an easy adhesion layer (4) formed on its surface, a transparent vinyl chloride resin sheet (5) is heat-pressed. The patterns (2 and 3) are formed from a water base ink in which a water base urethane resin is used as a binder, and the easy adhesion layer (4) is formed from a water base adhesive. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a decorative material for building materials made of vinyl chloride resin.

  Conventionally, as a decorative material used as a surface decoration material for building materials such as furniture and flooring, a material made of laminated vinyl chloride resin sheets is often used.

  This decorative material for building materials made of vinyl chloride resin is formed by laminating a colored vinyl chloride resin sheet serving as a base layer and a transparent vinyl chloride resin sheet serving as a top layer in a hot melt laminating system called doubling. Yes.

  In addition, a conventional vinyl chloride resin decorative material uses oil-based ink containing an organic solvent for pattern formation such as wood grain, and an oil-based adhesive containing an organic solvent is used for bonding the transparent sheet and the colored sheet. By using the agent, it has low cost and excellent properties such as processability, designability, printability, various resistances, bonding strength and flame retardancy, and it is widely used for furniture and flooring construction materials. Has been.

  However, recently, due to problems such as sick house syndrome, it has been studied to reduce the amount of volatile organic compounds (VOC).

  The above-mentioned oil-based ink and oil-based adhesive contain an organic solvent such as toluene, xylene, methyl ethyl ketone, methyl isobutyl ketone, ethyl acetate, butyl acetate or cyclohexanone, and therefore remain in the product from the products obtained using these. Solvent is generated as a large amount of VOC.

  Therefore, until now, in order to suppress the occurrence of these VOCs, many studies have been made to make the oil-based ink used in the production of the decorative material for building materials water-based. Usually, the water-based ink is used as the binder as a vinyl chloride resin. Because of the use of a base emulsion or an ethylene-vinyl acetate resin emulsion, there are many problems such as poor printability and a decrease in bonding strength between the base material layer and the top layer over time.

  Therefore, an object of the present invention is a low-cost vinyl chloride resin that reduces the occurrence of VOC while maintaining excellent properties such as processability, designability, printability, bonding strength, various resistances and flame retardancy. It is to provide a decorative material for building materials.

  The above problems are solved by the present invention described below. That is, the present invention is obtained by printing the patterns 2 and 3 and thermocompressing the transparent vinyl chloride resin sheet 5 on the surfaces 2 and 3 of the colored vinyl chloride resin sheet 1 provided with the easy adhesion layer 4 on the surface. The decorative material for building materials is characterized in that the pictures 2 and 3 are formed of a water-based ink having a water-based urethane resin as a binder, and the easy-adhesion layer 4 is formed of a water-based adhesive.

  The easy-adhesion layer is preferably formed from a water-based urethane adhesive, and the water-based urethane adhesive is preferably an adhesive composed of a water-dispersed polyisocyanate and a water-based urethane resin.

  According to the present invention, for the building material made of vinyl chloride resin, which has reduced the occurrence of VOC while maintaining the excellent properties of the decorative material for building material made of vinyl chloride resin using oil-based ink and oil-based adhesive. A cosmetic material can be provided.

Hereinafter, the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic cross-sectional view schematically showing a basic layer structure of a decorative material for building materials of the present invention. As shown in FIG. 1, the decorative material for building materials of the present invention is printed with a pattern 2 and / or 3 of the colored vinyl chloride resin sheet 1 on which the easy adhesion layer 4 is printed. A transparent vinyl chloride resin sheet 5 is thermocompression-bonded on the surface, the pattern 2 and / or 3 is formed of a water-based ink using a water-based urethane resin as a binder, and the easy-adhesion layer 4 is formed of a water-based adhesive. It is characterized by having.

  The colored vinyl chloride resin sheet 1 constituting the present invention is composed of a soft, semi-rigid or hard resin composition mainly composed of a polyvinyl chloride resin, a plasticizer, a colorant and a stabilizer, and is a known processing method. For example, it is formed into a sheet by a calendar method or an extrusion method. Although the thickness of the said sheet | seat 1 can be suitably changed according to the use used, and it does not specifically limit, Preferably, it considers workability and various tolerances, and is 50-800 micrometers.

  The sheet 1 is provided for imparting design properties to the decorative material for building materials, and is attached to a wooden, rubber or steel backer or base material, and is appropriately colored to conceal the foundation.

  The polyvinyl chloride resin used for the sheet 1 is the same as the polyvinyl chloride resin used for the conventional decorative material for building materials. Specifically, polyvinyl chloride, vinyl chloride and other monomers such as ethylene, propylene, vinyl acetate, vinylidene chloride, acrylic acid, methacrylic acid, acrylic ester, methacrylic ester, maleic acid, fumaric acid, acrylonitrile, Examples thereof include a copolymer resin with an alkyl vinyl ether or a mixture of these resins.

  The plasticizer used for the sheet 1 is not particularly limited. For example, a phthalic acid plasticizer such as dioctyl phthalate (DOP), an adipic acid plasticizer such as dioctyl adipate (DOA), a trimellitic acid plasticizer, A polyester polymer plasticizer or the like can be used.

  The plasticizer is preferably contained in the resin composition constituting the sheet 1 at a ratio of 0 to 40% by mass. Further, in consideration of workability and various resistances, the plasticizer 5 to 30% by mass. It is particularly preferable to use a semi-rigid vinyl chloride resin sheet that is contained in a percentage.

  Although the colorant used for the sheet 1 is not particularly limited, a colorant that can be colored to the extent that the base is hidden is preferable.

  Moreover, the resin composition which comprises the sheet | seat 1 can contain additives, such as a stabilizer or a filler, further according to the required characteristic.

  The patterns 2 and / or 3 are formed by a known printing method, for example, gravure printing, flexographic printing, or screen printing, using an aqueous urethane resin as a main binder and an ink obtained by adding a solvent, pigment, or the like thereto. Is done. Mainly, by performing solid printing as the pattern 2 and printing the pattern as the pattern 3, design properties are imparted to the cosmetic material.

  As the water-based urethane resin contained in the ink, for example, an aqueous dispersion type and / or an emulsion type of an ester urethane resin and / or an ether urethane resin can be used. In addition, an aqueous acrylic resin or a vinyl chloride resin emulsion can be added to the aqueous urethane resin as a modifier.

  The ink solvent is preferably water. For the purpose of improving the drying property of the ink and the leveling of the ink film, an alcohol having a small carbon number, such as methanol, ethanol or isopropyl alcohol, can be used in combination with water.

  A known pigment can be used as the pigment, and is not particularly limited.

  Further, the water-based ink can contain additives such as a viscosity modifier or a filler depending on the required properties.

  The easy-adhesion layer 4 constituting the present invention is a water-based adhesive, for example, a water-dispersible polyisocyanate and a water-based urethane resin, a water-dispersible epoxy resin and a water-based urethane resin, a water-based urethane resin, a vinyl acetate resin emulsion, ethylene -It is formed from an adhesive mainly composed of vinyl acetate resin emulsion, vinyl chloride-vinyl acetate resin emulsion, or a mixture thereof, and firmly adheres the transparent vinyl chloride resin sheet 5 and the patterns 2 and / or 3 to each other. Anything that can do. An aqueous urethane adhesive is preferable, and an adhesive made of water-dispersed polyisocyanate and an aqueous urethane resin, which has good resistance to water and the like, is more preferable.

The aqueous adhesive is applied to the pattern surface of the sheet 1 by a known method such as gravure coating, roll coating or spray coating. The coating amount of the aqueous adhesive is preferably 0.2 to 3.0 g / m ² (based on solid content). When the coating amount is less than 0.2 g / m ² , the bonding strength between the pattern surface of the sheet 1 and the sheet 5 is not sufficient, and when it exceeds 3.0 g / m ² , the cost is high. Since the designability of the decorative material may be lowered, it is not preferable.

  By forming the easy-adhesion layer 4 using a water-based adhesive, it becomes possible to suppress the occurrence of VOC from the decorative material, and by applying the water-based adhesive to the pattern surface of the sheet 1 on a thin film. Various resistances of the cosmetic material can be maintained.

  The aqueous adhesive may contain additives such as a viscosity modifier or a filler depending on required properties.

  The transparent vinyl chloride resin sheet 5 constituting the present invention is mainly composed of a soft, semi-rigid or hard resin composition containing a polyvinyl chloride resin, a plasticizer and a stabilizer, and a known processing method such as a calendar method or The sheet is formed by an extrusion method. The thickness of the sheet 5 can be appropriately changed according to the intended use and is not particularly limited, but is preferably 50 to 800 μm in consideration of processability and various resistances.

  In addition, the transparent vinyl chloride resin sheet 5 includes a translucent sheet, an embossed surface, and a sheet provided with a protective layer on the sheet 5. The sheet 5 imparts design properties to a decorative material, and maintains various physical properties required for building materials such as furniture and flooring, particularly surface properties of building materials such as scratch resistance, abrasion resistance, and contamination resistance. Have

  The polyvinyl chloride resin and plasticizer used for the sheet 5 can be the same as those used for conventional decorative materials for building materials, as with the sheet 1, and the resin composition constituting the sheet 5 The article can contain additives such as stabilizers, UV absorbers and fillers depending on the properties required.

  A method of laminating the transparent vinyl chloride resin sheet 5 on the colored vinyl chloride resin sheet 1 provided with the pattern 2 and / or 3 and the easy adhesion layer 4 is a known laminating method such as a dry laminating method or a wet laminating method. Alternatively, a hot-melt laminating method or the like can be used. Preferably, the heat-melting laminating method is used in the range of 150 to 250 ° C.

  Next, the present invention will be described more specifically with reference to examples.

[Example 1]
Gravure printing using a water-based ink (trade name: Hydrick PRP-401, manufactured by Dainichi Seika Kogyo Co., Ltd.) with a water-based urethane resin as a binder on a colored vinyl chloride resin sheet containing 25% by mass of a plasticizer and having a thickness of 90 μm Using a machine, solid printing and pattern printing were carried out on the wood grain pattern with 200 lines of engraving plate, and dried at a drying temperature of 35 ° C. Next, an aqueous adhesive (trade name: Superflex 107M, solid content 25%, manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) composed of an anionic urethane resin colloidally dispersed on the pattern surface and a water-dispersible polyisocyanate is used in a gravure printing machine. Wet 4 g / m ^{2 was} applied and dried at a drying temperature of 35 ° C. to form an easy adhesion layer. Thereafter, the easy adhesion layer of the colored vinyl chloride resin sheet and a transparent vinyl chloride resin sheet having a thickness of 100 μm containing 25% by mass of a plasticizer are layered, and using a hot roll machine at a temperature of 200 ° C., a speed of 10 m / min, pressure Thermal lamination was carried out under the condition of 1 kg / cm ² to obtain the decorative material for building materials of the present invention that can be used for decoration on the cabinet surface. The decorative material was excellent in processability and various physical properties, and generation of VOC was not observed even when heat-treated.

[Example 2]
Using a water-based ink (trade name: Hydrick PRP-401, manufactured by Dainichi Seika Kogyo Co., Ltd.) with a water-based urethane resin as a binder on a white vinyl chloride resin sheet containing 40% by mass of a plasticizer and gravure printing Using a machine, solid printing and pattern printing were carried out on the wood grain pattern with 200 lines of engraving plate, and dried at a drying temperature of 35 ° C. Next, a roll of an aqueous adhesive (trade name: Superflex 150, solid content 30%, manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) composed of an anionic urethane resin colloidally dispersed on the pattern surface and a water-dispersible polyisocyanate. Wet 6 g / m ^{2 was} applied with a coater and dried at a drying temperature of 35 ° C. to form an easy adhesion layer. Thereafter, the easy-adhesion layer of the white vinyl chloride resin sheet and a transparent vinyl chloride resin sheet having a thickness of 120 μm containing 50% by mass of a plasticizer are stacked, using a hot roll machine at a temperature of 180 ° C., speed 10 m / min, pressure Thermal lamination was carried out under the condition of 1 kg / cm ² to obtain a decorative material for building materials of the present invention that can be used for floor surface decoration. The decorative material was excellent in processability and various physical properties, and generation of VOC was not observed even when heat-treated.

  ADVANTAGE OF THE INVENTION According to this invention, the decorative material for building materials which reduced VOC can be provided, maintaining the various outstanding characteristics which the decorative material for building materials made from a vinyl chloride resin using oil-based ink and an oil-based adhesive has. . The decorative material for building materials can be used by being bonded to a backer or base made of wood, rubber or steel, and is useful as a surface decoration material for building materials such as furniture and flooring.

The schematic cross section which shows the basic layer structure of the decorative material for building materials of this invention schematically.

Explanation of symbols

1: Colored vinyl chloride resin sheet 2: Pattern 3: Pattern 4: Easy adhesion layer 5: Transparent vinyl chloride resin sheet

Claims (3)

  The transparent vinyl chloride resin sheet (5) is heated on the pattern (2, 3) surface of the colored vinyl chloride resin sheet (1) on which the pattern (2, 3) is printed and the easy adhesion layer (4) is provided on the surface. For building materials, characterized in that the pattern (2, 3) is formed by water-based ink using a water-based urethane resin as a binder, and the easy-adhesion layer (4) is formed of a water-based adhesive. Cosmetic material.   The decorative material for building materials according to claim 1, wherein the easy-adhesion layer is formed from a water-based urethane adhesive. The building material decorative material according to claim 2, wherein the water-based urethane adhesive is an adhesive composed of a water-dispersed polyisocyanate and a water-based urethane resin.

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