JPH0211314B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a decorative material, and particularly to a method for manufacturing a decorative board in which the conduit portion is matte and has excellent surface hardness and abrasion resistance.

The manufacturing method for decorative materials with matte conduit sections involves applying a topcoat of transparent synthetic resin paint after printing, and then using matte ink to embed conduit groove patterns on the coated surface before the paint film hardens. How to print with
-40725 Publication) or after printing, the conduit grooves are printed using ink containing granular solids, and then
A method of providing a surface protective layer (Japanese Patent Publication No. 51-41364) is known.

However, in the former method, the conduit groove pattern printed using matte ink does not protrude from the decorative material, but exists on the surface, and in particular, the abrasion resistance of the conduit groove pattern cannot be said to be sufficient. In the latter method, the abrasion resistance is somewhat improved due to the presence of a surface protective layer, but the adhesion between the conduit groove pattern and the surface protective layer or printed layer is not particularly strengthened, and furthermore, the surface protective layer If you apply a thick layer, the matte effect of the conduit groove pattern will weaken, so
It cannot be applied thickly, and its abrasion resistance is still not sufficient.

The present invention has been made as a result of research to eliminate the above-mentioned conventional drawbacks, and has overcome these drawbacks by having the structure described in the claims. The present invention will be explained in detail below using the drawings.

The base material 1 used in the present invention includes paper such as tissue paper, bleached kraft paper, titanium paper, linter paper, paperboard, and gypsum board paper, polyethylene film, polypropylene film, polyvinyl chloride film, polyvinylidene chloride film, and polyvinyl alcohol film. , polyethylene terephthalate film, polycarbonate film, nylon film, polystyrene film, ethylene vinyl acetate copolymer film, ethylene vinyl alcohol copolymer film, plastic film such as ionomer, wood, wood base material such as laminated board, particle board, gypsum board , gypsum base materials such as gypsum slag board, fiber cement board such as pulp cement board, asbestos cement board, wood chip cement board, GRC and concrete, iron, aluminum,
Metal foils or sheets such as copper, and composites of the above base materials can be used. Alternatively, before forming a composite, a decorative material may be manufactured using the first base material and then attached to a second base material.

Next, a wood grain pattern 3 is printed on the base material as described above using ordinary ink. The inks used include cellulose derivatives such as ethyl cellulose, ethyl hydroxyethyl cellulose, cellulose acetate propionate, and cellulose acetate as vehicles, styrene resins and styrene copolymer resins such as polystyrene, polyα-methylstyrene, polymethyl methacrylate, and polymethacrylate. Acrylic or methacrylic resin alone or copolymer resin such as ethyl acid, polyethyl acrylate, butyl polyacrylate, rosin, rosin ester resin such as rosin-modified maleic acid resin, rosin-based phenolic resin, polymerized rosin, polyvinyl acetate Using one or more of resins, coumarone resins, vinyl toluene resins, vinyl chloride resins, polyester resins, polyurethane resins, butyral resins, polyamide resins, vinyl chloride-vinyl acetate copolymer resins, etc.
Furthermore, a colorant such as a pigment or dye, a plasticizer, a stabilizer, a dispersant, a filler, a solvent, a diluent, etc. are added and kneaded. Printing methods include gravure printing, gravure offset printing, lithographic offset printing, die-line printing, letterpress printing, intaglio printing,
This is carried out by a known method such as jet printing, silk screen printing, or electrostatic printing. Note that, before performing the above printing, it is preferable to provide a wood grain base color layer 2 using the same ink, and in this case, a wood grain pattern 3 is provided on the wood grain base color layer.

Next, after the wood grain pattern 3 is provided on the base material 1 using ordinary ink as described above, a transparent intermediate layer 4 is provided using a transparent curable synthetic resin paint. The transparent curable resin paint constituting the transparent intermediate layer 4 may include a paint containing a vehicle based on a resin such as an aminoalkyd resin or a polyurethane resin, or a paint containing a vehicle based on a grade of acrylate monomer or oligomer. To create a transparent intermediate layer using the above paints, gravure coating, roll coating, air knife coating, kiss coating, spray coating, continuous coating, dip coating, spinner coating, wheeler coating, and brush coating can be used. , solid coating by silk screen printing, wire bar coating, etc., and the thickness of the transparent intermediate layer can be arbitrarily set according to the purpose.

Next, the surface of the transparent intermediate layer provided as described above contains granular solid content, and at least one of the curing components of the vehicle of the transparent curable synthetic resin paint and/or the transparent curable synthetic resin paint for top coating. The wood grain conduit grooves 5 are printed using an ink containing one of the hardening components of the vehicle.

When explaining the ink used to print wood grain conduit grooves, first of all, the granular solid content is usually
An inorganic salt such as barium sulfate or an organic blowing agent such as azodicarbonamide may be added in an amount of 10 to 40 parts by weight per 100 parts by weight of the vehicle.

Furthermore, the ink vehicle used to print the wood grain conduit grooves is at least the same as the transparent hardening synthetic resin paint (hereinafter often referred to as the first layer) constituting the transparent intermediate layer.
It is necessary to contain one of the curing components of the vehicle for the top coat transparent synthetic resin paint (hereinafter often referred to as the second paint), for example, polybase of aminoalkyd resin. When the main ingredient is acid, polyol or formalin, polyester polyol or polyether polyol of polyurethane resin, isocyanate, acrylate monomer or oligomer, such monomers or oligomers or other polyfunctional monomers or polymerization initiators can be mentioned. In addition to these, an ink made by appropriately kneading the vehicle used in normal ink for printing the wood grain pattern 3, other pigments or dyes, plasticizers, stabilizers, dispersants, fillers, solvents, and diluents, It can be provided by a printing method similar to that used to provide the wood grain pattern 3.

Furthermore, after printing the wood grain conduit grooves as described above, a transparent surface layer 6 is provided over the entire surface using a transparent curable synthetic resin paint for top coating. The transparent curable synthetic resin paint for top coating used here can be the same as the transparent curable synthetic resin paint constituting the transparent intermediate layer described above, and may further contain silicone, wax, etc. Good to use. Further, the paint vehicles used for the transparent intermediate layer 4 and the transparent surface layer may be the same or different, but from the viewpoint of adhesion, it is preferable that the paint vehicles be the same.

Since the present invention has the above configuration, the printed wood grain conduit grooves firmly adhere to the transparent intermediate layer and/or the transparent surface layer, and have high wear resistance. Particularly when the paint vehicle constituting the transparent intermediate layer and the transparent surface layer is the same, the wood grain conduit grooves printed between them are firmly held.

Since the present invention has the above effects, the decorative material obtained by the production method of the present invention is suitable for use in frequently used areas.

Examples are given below to explain the present invention more specifically.

Example: Apply gravure ink containing nitrocellulose resin and alkyd resin as vehicles to thin paper (basis weight 23 g/m ² ), apply wood grain base color using a gravure solid plate with a plate depth of 80 μm, and then apply gravure using the same ink. A wood grain pattern was printed using a printing plate.

Next, a transparent intermediate layer was formed using a gravure plate with a plate depth of 100 μm using a paint containing polyester polyol and isocyanate as a vehicle, and then a transparent intermediate layer was formed using a gravure plate with a depth of 100 μm.
40 parts by weight of azodicarbonamide,
Using a gravure ink containing 5 parts by weight of isocyanate, printing wood grain conduit grooves using a gravure plate with a plate depth of 60 μm, and further adding silicone to the same paint used to provide the transparent intermediate layer,
A transparent surface layer was provided using a gravure solid plate with a plate depth of 38 μm to obtain a decorative material.

In the obtained decorative material, the conduit grooves were in a matte state and the wear resistance was improved.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the structure of a decorative material manufactured according to the present invention. 1...Base material, 2...Wood grain base color layer, 3...Wood grain pattern, 4...Transparent intermediate layer, 5...Wood grain conduit groove, 6
...Transparent surface layer.

Claims (1)

[Scope of Claims] 1. (a) A step of printing a wood grain pattern on a base material using ordinary ink, (b) A step of providing a transparent intermediate layer using a transparent hardening synthetic resin paint, and (c) A wood grain conduit is prepared using an ink containing granular solids and at least one of the curing components of the vehicle of the transparent curable synthetic resin paint and/or one of the curing components of the vehicle of the transparent curable synthetic resin paint for topcoat. A method for producing a decorative material comprising the above-mentioned steps of printing grooves and (d) providing a transparent surface layer using a transparent hardening synthetic resin topcoat.