JPH0881900A - Decorative paper for building material and decorative sheet - Google Patents

Abstract

PURPOSE: To provide decorative paper for building material and decorative sheet with excellent V cutting processing suitability by using a decorative paper material (paper material) made of relatively inexpensive paper having dimensional stability against heat variability. CONSTITUTION: A paper material layer 1 comprising lamella paper obtained by mixing cellulosic natural fiber or chemical fiber with chemical fiber such as polyvinyl alcohol-based fiber, acrylic fiber, rayon, polypropylene fiber and optionally titanium white and impregnating the mixture with a synthetic resin emulsion or latex is provided with a printing ink layer 2 composed of a two pack type printing ink having flexibility and a clear topcoated layer 5 composed of a two pack type clear resin having flexibility to give the objective decorative paper A. The decorative paper A is laminated through an adhesive to the surface of a material B by ply wood, particle board or middle-density fiber board to give the objective decorative sheet.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative paper and a decorative board for building materials, which is used by being attached as a decorative material to the surface of interior wall materials, door materials, and other furniture materials.

[0002]

2. Description of the Related Art Decorative paper (decorative sheet) for conventional building materials
As for, a decorative printed pattern such as a wood grain pattern is appropriately applied on a paper-made decorative substrate (thin paper) such as titanium paper, and a synthetic resin film such as a polyvinyl chloride film is laminated on the printed pattern. There are those with a clear top coat, those with a clear top coat applied with a synthetic resin paste such as vinyl chloride, etc.

As another decorative paper (decorative sheet), for example, a decorative printed pattern such as a wood grain pattern is appropriately printed on a synthetic resin decorative substrate such as a polyvinyl chloride film, and the printed pattern is printed. There is a decorative sheet in which a polyvinyl chloride film of the same material is laminated and stuck as a top coat.

[0004]

The decorative paper using the above-mentioned paper-made decorative base material (thin paper mixed with titanium white) is more resistant to thermal fluctuation than the case of using a synthetic resin-made decorative base material. The dimensional stability is relatively good, but on the other hand, there is a drawback that the adhesion strength (adhesion strength) between the laminated or coated top coat and the paper-made decorative base material cannot be obtained.
The decorative paper is made by laminating the decorative paper base material (plywood, particle board, medium-density fiberboard, etc.) on the surface of a wood base material via an adhesive to form a decorative board. This veneer is V-cut from the back side (wood substrate side) (V-cut with the decorative paper on the veneer surface left)
It is used by bending the decorative paper to the outside and bending it to 90 ° or the like. However, in the V-cut / bending process of such a decorative plate, the bending angle portion of the decorative paper which is convex to the outside is used. ,
In particular, it is easily pulled and cracked or ruptured to be easily damaged. Therefore, the suitability for V-cut processing is difficult.

On the other hand, a decorative sheet using a decorative base material made of a synthetic resin such as the polyvinyl chloride film is more suitable for embossing and laminated on a decorative board base material than a decorative base material made of paper. V cut suitability when used as a decorative board,
Or, although it has excellent adhesion strength, etc., it has poor dimensional stability against heat fluctuations, and the printed pattern stretched on the decorative base made of synthetic resin due to temperature changes, and it fits the printed pattern (bottom pattern). When the surface of the clear topcoat is embossed, it is difficult to match the registration between the embossed pattern on the surface of the topcoat and the printed pattern (lower pattern).

The object of the present invention is to make a paper-made decorative base material (paper base material) which is dimensionally stable against heat fluctuations and which is relatively inexpensive.
A decorative paper and a decorative board for a building material, which is used to provide excellent V-cut processing suitability.

[0007]

DISCLOSURE OF THE INVENTION The present invention is a synthetic resin emulsion prepared by mixing a natural cellulosic fiber or a chemical fiber, a chemical fiber such as vinylon, acrylic, rayon, polypropylene and the like, and titanium white if necessary. Alternatively, a printing ink layer 2 formed by a two-component curing type printing ink having adhesiveness and flexibility with respect to the paper base material layer 1 on a paper base material layer 1 composed of a thin paper impregnated with latex.
And a clear top coat layer 5 formed of a two-component curing type clear resin having adhesiveness and flexibility with respect to the printing ink layer 2 is provided on the printing ink layer 2. It is a decorative paper for decoration.

The present invention also relates to the above decorative paper A for building materials.
Is a decorative board for building materials, characterized in that it is laminated on the surface of the base material B made of either plywood, particle board, or medium-density fiberboard via an adhesive.

[0009]

EXAMPLE The decorative paper for building materials of the present invention will be described in detail with reference to one example of FIG. Paper base material layer 1 is 23 to 50 g
A sheet-like paper base material formed by impregnating a thin paper having a thickness of about / m ² (a thickness of about 70 to 80 μm) with a resin emulsion such as an acrylic synthetic resin emulsion or an amino synthetic resin emulsion.

The thin paper constituting the paper base layer 1 is a mixed paper made by mixing cellulosic natural fibers or cellulosic chemical fibers with chemical fibers such as vinylon, acryl, rayon and polypropylene. Further, in order to impart a concealing property to a base portion (a decorative plate base material to be laminated later), titanium white may be mixed and mixed into the paper, if necessary.

The paper base layer 1 is formed by impregnating a thin paper (thickness of about 70 to 80 μm) with a resin emulsion as described above, so that the thin paper can be applied in the transverse direction orthogonal to the grain direction (longitudinal direction) of the thin paper. The elongation rate due to mechanical tensile force is at least 6% or more (6 to 8%), the elongation rate due to the same tensile force in the longitudinal direction is 1% or more (1 to 2%), and the tensile strength is , At least 3 kgf / cm (paper width)
It is suitable to have a performance higher than that.

The ink layer 2 formed by printing with the two-component curing type printing ink laminated on the paper base layer 1 is composed of one layer or a multi-layered printing ink layer of two or more layers. In the embodiment, for example, a solid ink layer 3 made of a two-component curable printing ink printed in one or a plurality of colors having an appropriate color tone such as transparent or translucent, or white, blue, red or the like.
And a pattern ink layer 4 formed on the upper side of the pattern ink, which is transparent or semi-transparent, or is printed in one or a plurality of colors with a two-component curable printing ink or a normal printing ink having an appropriate color tone such as white, blue or red. To be done. Solid ink layer 3
Is a solid ink layer formed on the paper base material layer 1 by using, for example, white ink also as a concealing layer, and is printed on the solid ink layer 3 by printing a wood grain pattern or the like (one color or a plurality of colors). 4 is given. In addition, when thin paper mixed with titanium white is used for the paper base layer 1, the solid ink layer 3 is omitted,
Only the pattern ink layer 4 may be formed by printing with the two-component curing type printing ink.

The two-component curing type printing ink used for the print formation of the ink layer 2 is a paper which is obtained by laminating a decorative paper base material to a decorative board base material and then bending the decorative board base material by V-cut processing. The ink layer 2 does not peel off from the substrate 1, and the ink layer 2 has cracks, cracks,
A printing ink that has good adhesion to the paper substrate 1 so that breakage does not occur and that uses a flexible resin as a vehicle after the ink is dried to give flexibility to the entire decorative paper is used. Is appropriate.

As the ink layer 2, a polyol resin (or a polyamine resin or a polycarboxylic acid resin) as a vehicle in which a pigment having an appropriate color tone is kneaded,
A urethane-based (or polyamine-based or polycarboxylic acid-based) two-component curing type printing ink is used which is mixed with a polyisocyanate resin immediately before printing on the paper base material 1 and used as a printing ink.

The urethane-based two-component curing type printing ink is a alkyd resin having a hydroxyl group (--OH), an acrylic resin, a cellulose derivative resin, a polyol resin such as a polyvinyl alcohol resin, or an amino group (--NH).
₂ ) having a polyamine, a carboxyl group (-COO
Before using a resin having active hydrogen such as a polycarboxylic acid having H) and a polyisocyanate resin having an isocyanate group (-NCO) for printing (for example, immediately before)
It is mixed and used as one liquid, and after printing, the printing ink is polymerized and cured at room temperature by a cross-linking polymerization reaction of a hydroxyl group (—OH) and an isocyanate group (—NCO) and dried. .

As other two-component curing type printing ink, a polyvinyl chloride-polyvinyl acetate copolymer is mixed with an alkyd resin having a hydroxyl group (-OH), an acrylic resin or a resin such as nitrocellulose or polyvinyl alcohol. And then using a clear resin in which a polyisocyanate resin having an isocyanate group (-NCO) (tolylene diisocyanate resin, or methylene diisocyanate resin, hexamethylene diisocyanate resin, or other polyisocyanates) is mixed Is appropriate.

In the two-component curing type printing ink, a alkyd resin having a hydroxyl group (-OH), an acrylic resin, a cellulose derivative resin, a polyol resin such as a polyvinyl alcohol resin, or an amino group (-NH) is used.
₂ ) having a polyamine, a carboxyl group (-COO
The compounding ratio of the resin having active hydrogen such as polycarboxylic acid having H) and the polyisocyanate resin or the resin mainly containing the polyisocyanate resin is, for example, polyol resin 95 in order to impart flexibility to the ink layer 2. ~ 8
0 parts by weight, or about 5 to 20 parts by weight (preferably 10 to 14 parts by weight) of a polyisocyanate resin or a resin mainly composed of a polyisocyanate resin, or
Alternatively, it is suitable to mix them in a molar ratio of polyol resin: polyisocyanate resin or a resin mainly composed of polyisocyanate resin = 3: 2, or 1: 1 or 1: 2, but in the present invention, an ink layer There is no particular limitation as long as the flexibility of 2 is obtained.

The printing ink used in the ink layer 2 is cracked in the ink layer 2 when the decorative board base material is bent by V-cut processing after laminating the decorative paper on the decorative board base material. In order to impart flexibility to the entire decorative paper after completion so that cracks (cracks), breakage, etc. do not occur, flexible resin (for example, urethane resin, polyvinyl chloride, poly A printing ink containing a vehicle mainly composed of a vinyl resin such as a vinyl chloride-polyvinyl acetate copolymer, a polyester (polyethylene terephthalate) resin, an acrylic resin or the like is used.

When the ink layer 2 is formed by printing with a two-layer structure, the same two-component curing type printing inks can be used for printing the solid ink layer 3 and the pattern ink layer 4, respectively. For the print formation of layer 4,
Vinyl resin such as polyvinyl chloride, polyvinyl chloride-polyvinyl acetate copolymer, etc., nitrocellulose resin (nitrified cotton resin), polyester (polyethylene terephthalate) resin, acrylic resin dissolved in organic solvent It is possible to use an oxidation drying type (or solvent volatilization type) ordinary printing ink using a liquid as a vehicle. In addition,
By using a solvent having a relatively slow volatilization rate (for example, ethyl cellosolve, hexane, etc.) as a solvent for the above-mentioned ordinary printing ink of the oxidation dry type (or solvent volatilization type),
It is preferable that the penetration of the printing ink into the solid ink layer 3 is good and the good adhesion of the pattern ink layer 4 to the solid ink layer 3 is obtained.

Further, in the print formation of the pattern ink layer 4, an unsaturated polyester resin (sensitizer: benzoin butyl ether) dissolved in a styrene monomer (vinyl monomer) and an ultraviolet curing by an acrylic monomer (sensitizer: benzoin) are used. A pattern printing ink, an electron beam curing type printing ink (without a sensitizer), or a heat curing type printing ink can be used.

The clear top coat layer 5 is provided on the ink layer 2 (in one embodiment, the pattern ink layer 4), and the clear top coat layer 5 has an adhesive strength to the ink layer 2. A transparent or semi-transparent clear or semi-transparent two-component curable clear resin that has flexibility and is flexible, and is applied by roll coating, gravure coating, spray coating, or the like.
Alternatively, it is laminated on the ink layer 2 by a printing method or the like.

The clear top coat layer 5 is the outermost surface layer of the decorative paper of the present invention, and imparts stretchability to prevent cracks and breakage due to stretching during bending processing by V-cut processing. Flexibility is more important than the resin of the ink layer 2. Therefore, as the above-mentioned two-component curing type clear resin, a polyol resin having a hydroxyl group (-OH) such as an alkyd resin, an acrylic resin, a cellulose-based derivative resin and a polyvinyl alcohol resin, and a curing agent having an isocyanate group (-NCO) ( A polyisocyanate resin as a cross-linking agent) is mixed and used as one liquid before (for example, immediately before) it is used for coating and forming on the ink layer 2. It is suitable to use a diisocyanate resin, a methylene diisocyanate resin, or a clear resin mixed with a hexamethylene diisocyanate resin.

The clear top coat layer 5 may be a single layer, but can be formed in two layers as shown in one embodiment of FIG. 1 or in multiple layers. For example, as shown in FIG. The top coat layer 5 is formed of two layers, a solid clear top coat layer 6 made of a two-component curing type clear resin and a patterned top pattern coat layer 7 made of a two-component curing type clear resin.

Alternatively, the outermost surface of the clear top coat layer 5 may be provided with an embossed pattern of an appropriate shape pattern formed by heating and pressing using an embossing die. For example, in the ink layer 2 Pattern ink layer 4
The top pattern coat layer 7 may be formed by applying an embossing pattern in synchronism with the pattern pattern.

Next, as shown in FIG. 2, a decorative board for building materials of the present invention is obtained by applying the decorative paper A for building materials of the present invention to plywood,
Alternatively, it is attached to the surface of the base material B for decorative plate such as particle board or medium density fiber board (wood fiber is pressed by thermosetting resin and hardened), or the surface and the side surface with an adhesive as necessary. It is what is worn.

As shown in FIG. 3 (a), the decorative board C for building materials has a surface opposite to the decorative paper A from the surface B of the decorative board.
After the V-cut 10 is applied to the V-shaped linear groove using a cutter blade or the like, as shown in FIG. It is used by being bent outwardly and bent to, for example, 90 °.

The following are specific examples of the decorative paper for building materials of the present invention.

Example 1 Natural or synthetic cellulose fibers and chemical fibers such as vinylon, acrylic, rayon, and polypropylene are mixed and made into a basis weight of 23 to 50.
g / m ² (thickness 70 to 80 μm) or 5
An acrylic synthetic resin emulsion, an acrylic synthetic resin latex, an amino synthetic resin emulsion, on the surface of a thin paper (KMT-75; manufactured by Mitsubishi Paper Mills, Ltd.) of 0 to 100 g / m ² (thickness of 80 to 90 μm or more), A resin base material (paper base material layer) was prepared by coating and impregnating a resin emulsion or latex such as amino synthetic resin latex with a coating device. By this coating / impregnation, the mechanical tensile elongation in the transverse direction orthogonal to the grain (longitudinal direction) of the paper substrate created (elongation immediately before the paper substrate breaks)
Was set to 6% or more.

Next, on the above paper base material (paper base material layer), using a two-component curing type white printing ink, 1 g / m ^{2 to} 1.5
A white solid ink layer (concealing layer) was formed by printing with a layer thickness of g / m ² (dry), and the solid ink layer was reaction-cured for an appropriate time and dried.

Next, the paper base material is introduced into a gravure rotary printing machine, and a gravure printing plate on which a printing pattern such as a wood grain pattern is appropriately made is used, and a nitrocellulose resin or an alkyd resin having a hydroxyl group (--OH), 3 to 15 parts by weight of a resin such as an acrylic resin or polyvinyl alcohol, or a vinyl chloride resin or a resin mainly composed of a vinyl chloride resin and an alkyd resin having a hydroxyl group (—OH), an acrylic resin, or a polyvinyl alcohol is mixed. A gravure printing ink made of a resin and a resin to which 5 to 20 parts by weight (preferably 10 to 14 parts by weight) of an isocyanate resin having an isocyanate group (-NCO) capable of undergoing a crosslinking reaction with the resin is added as a curing agent On the solid ink layer of the base material, a print pattern such as a wood grain pattern is printed to form a pattern ink layer,
The pattern ink layer was reacted and cured for an appropriate time and dried.

Next, a two-component curing type clear resin (acrylic polyol resin and hexamethylene diisocyanate as a curing agent) is applied to the entire surface of the paper base material (paper base material layer) from above the pattern ink layer by a coating device. (A mixed resin with a system resin) is coated in a solid state with a coating film thickness of 0.05 to 0.3 mm, reacted and cured for an appropriate time and dried to form a clear top coat layer, and the decorative paper of the present invention. Was manufactured.

<Example 2> Natural or synthetic cellulose fibers were mixed with chemical fibers such as vinylon, acrylic, rayon, polypropylene, etc., and titanium white was mixed with them to give a hiding property. ^{About 2} (thickness 70
Approximately 80 μm) thin paper (titanium paper) surface is coated with a resin emulsion or latex such as acrylic synthetic resin emulsion, acrylic synthetic resin latex, amino synthetic resin emulsion, amino synthetic resin latex, etc. by a coating device. A paper base material (paper base material layer) was prepared by impregnation. By this coating / impregnation, the mechanical tensile elongation rate (elongation rate immediately before breakage of the paper base material) in the transverse direction orthogonal to the grain (longitudinal direction) of the paper base material produced is 6
% Or more.

Next, the paper base material is introduced into a gravure rotary printing machine, and a gravure printing plate on which a printing pattern such as a wood grain pattern is appropriately made is used, and a nitrocellulose resin or an alkyd resin having a hydroxyl group (--OH), 3 to 15 parts by weight of a resin such as an acrylic resin or polyvinyl alcohol, or a vinyl chloride resin or a resin mainly composed of a vinyl chloride resin and an alkyd resin having a hydroxyl group (—OH), an acrylic resin, or a polyvinyl alcohol is mixed. A gravure printing ink made of a resin and a resin to which 5 to 20 parts by weight (preferably 10 to 14 parts by weight) of an isocyanate resin having an isocyanate group (-NCO) capable of undergoing a crosslinking reaction with the resin is added as a curing agent A print pattern such as a wood grain pattern is printed on the base material to form a pattern ink layer, and the pattern ink layer is reacted and cured for an appropriate time. It was 燥.

Next, a two-component curing type clear resin (acrylic polyol resin and hexamethylene diisocyanate as a curing agent) is applied to the entire surface of the paper base material (paper base material layer) from above the pattern ink layer by a coating device. (A mixed resin with a system resin) is coated in a solid state with a coating film thickness of 0.05 to 0.3 mm, and reaction-cured for an appropriate time and dried to form a clear top coat layer. Manufactured.

<Example 3> On the clear top coat layer of the decorative paper produced in Example 1 or Example 2 above, a two-component curable clear resin (acrylic polyol resin and hexamethylene diisocyanate as a curing agent) was applied. (Resin mixed with nato resin), with a coating film thickness of 0.05 to 0.3 mm, pattern coating of a pattern corresponding (tuned) to the printed pattern of the pattern ink layer is applied, and the reaction is cured for an appropriate period of time. Dry to form a clear top pattern coat layer,
The decorative paper of the present invention was produced.

<Embodiment 4> A pattern embossing roll having an appropriate pattern corresponding to (tuned to) the print pattern of the pattern ink layer is formed on the clear top coat layer of the decorative paper produced in Example 1 or 2 above. By applying heat and pressure embossing to form a clear top pattern coat layer, a decorative paper of the present invention was produced.

<Embodiment 5> The decorative papers of the present invention produced in the above-mentioned Embodiments 1 to 4 were each coated with a polyvinyl chloride adhesive (BA-53; Chuo Rika Kogyo Co., Ltd.).
Manufactured), or vinyl chloride-vinyl acetate copolymer-based adhesive, ethylene-vinyl acetate-based adhesive, or urethane-based one-component curing type or two-component curing type adhesive (room temperature curing type)
Using 5 mm thick plywood, or particle board base material, or the surface of a base material for decorative boards such as medium density fiberboard,
Alternatively, the surface-treated book may be wound on both front and back surfaces, or on the surface of the base material for decorative plate and the side surface of the end portion of the base material, and by appropriately laminating them while heating. A decorative board of the invention was obtained. Adhesive coating amount: 5.5 mg / cm ² Laminating temperature: normal temperature or 60 ° C., laminating press pressure: 20 kg
f / cm ² × 20 seconds

Subsequently, using the above-described decorative board of the present invention, a rectangular quadrangular side plate portion (four side plates) of a right-angled quadrangle used for a case such as furniture and capinet was prepared.

In the production of the rectangular tubular side plate portion of the right-angled quadrilateral, one surface-treated particle board is used, and three of the four corner portions of the rectangular tubular side plate portion to be produced are to be formed. From the back surface side of the portion corresponding to (1) to the depth before reaching the paper base of the laminated composite decorative sheet, V-cut processing was performed in parallel and straight lines.

After that, the surface-treated particle board is bent exactly at right angles with the V-cut three parts as folds, with the composite decorative sheet side as the outside and the particle board base material side as the inside, and the particles By abutting both ends of the board at a right angle, forming a rectangular quadrangular side surface portion of a right-angled quadrilateral continuous outside by a composite decorative sheet, by appropriately joining the abutting portions with a bonding material such as an adhesive or a metal fitting, A square tubular side surface portion used for a case such as furniture and a capinet that is mounted by the composite decorative sheet is formed.

The above-mentioned decorative paper of the present invention, which has been subjected to the surface treatment on the particle board, does not cause whitening due to V-cut processing, and the phenomenon that the decorative paper is cut off at the corners of the bend of the particle board does not occur. I was not able to admit.

<Example 6> The decorative papers of the present invention produced in Examples 1 to 4 were each coated with a polyvinyl chloride adhesive (BA-53; Chuo Rika Kogyo Co., Ltd.).
Manufactured), or vinyl chloride-vinyl acetate copolymer-based adhesive, ethylene-vinyl acetate-based adhesive, or urethane-based one-component curing type or two-component curing type adhesive (room temperature curing type)
By using, to scrape plywood or particle board base material, or wood base material such as medium-density fiber board into a predetermined surface shape (curved surface shape), to construct an outer frame of a door or other fitting. The outer surface of the outer frame material is subjected to lapping (curved surface attachment) processing on the surface of the outer frame material or the outer surface such as the surface and the side surface that is molded to have the shape of the rectangular outer frame material. A decorative plate in the form of the outer frame material, which was surface-treated with decorative paper, was obtained. Adhesive application amount; 5.5 mg / cm ² bonding temperature; room temperature or any temperature of 40 ° C. to 60 ° C. bonding press pressure; 20 kgf / cm ² × 20 seconds

The decorative paper having the outer frame body surface-treated in Example 6 had good lapping suitability without causing paper breakage during curved surface lapping during lapping.

[0044]

The decorative paper A for building materials of the present invention is a synthetic paper obtained by mixing cellulosic natural fibers or chemical fibers, chemical fibers such as vinylon, acrylic, rayon, polypropylene, etc., and titanium white if necessary. Paper base layer 1 made of thin paper impregnated with resin emulsion or latex
The paper base layer 1 is made of thin paper having tensile strength impregnated with a synthetic resin emulsion or latex, and particularly, the mechanical tensile strength in the transverse direction orthogonal to the grain is enhanced. is there.

The ink layer 2 is formed of a two-component curing type printing ink having adhesiveness to the paper base layer 1 and flexibility after being cured and dried, and is a clear top coat formed on the ink layer 2. Since the layer 5 is formed of a two-component curable clear resin that has adhesiveness and flexibility to the ink layer 2, the paper base layer 1, the ink layer 2, and the clear top coat layer 5 are spread over each layer. , The decorative paper is firmly adhered and formed, and the flexibility of the paper base layer 1, the ink layer 2, and the clear top coat layer 5 in the bending process is obtained, the bending resistance of each layer is enhanced, and the cracks at the bending corner are formed. It is possible to avoid the occurrence of breakage.

The decorative paper A for building materials of the present invention is
It is a decorative paper using the paper base layer 1, and compared to a conventional decorative sheet made of a single resin material using polyvinyl chloride, the paper base layer 1 is resistant to mechanical tensile force (tension) and heat. Variation in expansion and contraction is suppressed, and dimensional stability is obtained.

Further, the decorative sheet C for building materials produced by sticking the decorative sheet A of the present invention to the surface B of the decorative sheet substrate such as plywood, particle board, and medium density fiberboard is a decorative sheet. After the base material B for V is cut by V cut 10, the decorative paper A side is made convex and bent by the V cut 10,
Since is flexible, it is possible to avoid the occurrence of cracks and fractures at the bent corners.

[0048]

EFFECTS OF THE INVENTION The decorative paper for building materials of the present invention suppresses expansion and contraction fluctuations due to tension and heat, and dimensional stability against heat, as compared with conventional decorative sheets made of a single resin material using polyvinyl chloride. There is an effect that can be obtained.

Further, since printing can be performed using a paper substrate as a base, the sheet has dimensional stability against tension and heat of the printing machine. For example, it has a combination of grain patterns in the longitudinal direction or the lateral direction. There is an effect that the pattern printing of the decorative material such as the interior material, the wall material or the door material can be printed on the single sheet with high registration accuracy.

The decorative paper and veneer for building materials of the present invention are V-cut processed and V-cut processed by the good adhesion and flexibility of the paper base layer, ink layer and clear top coat layer. The bending resistance of each layer in the bending process is obtained, and there is an effect that the occurrence of cracks or fractures at the bending corners can be avoided.

[Brief description of drawings]

FIG. 1 is a side sectional view of a decorative paper for building materials in an embodiment of the present invention.

FIG. 2 is a side sectional view of a decorative plate for building material in one embodiment of the present invention.

FIG. 3 (a) is an external perspective view showing a state in which a decorative board for building materials in one embodiment of the present invention is V-cut.
(B) is a decorative board for building materials in one embodiment of the present invention
It is an external appearance perspective view showing a state of being bent after being cut.

[Description of sign]

1 ... Paper base layer 2 ... Ink layer 3 ... Solid ink layer 4 ...
Pattern ink layer 5 ... Clear top coat layer 6 ... Clear top coat layer 7 ... Top pattern coat layer 10 ... V cut A ... Decorative paper B ... Decorative board base material C ... Decorative board

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location B32B 27/10 9349-4F D06N 7/06 E04F 13/00 B 9127-2E

Claims (2)

[Claims] 1. A thin paper obtained by mixing a natural cellulosic fiber or a chemical fiber, a chemical fiber such as vinylon, acrylic, rayon or polypropylene, and titanium white if necessary, and impregnating a synthetic resin emulsion or latex. A printing ink layer 2 formed of a two-component curing type printing ink having adhesiveness and flexibility to the paper substrate layer 1 is provided on the formed paper substrate layer 1, and the printing ink layer 2
On the other hand, a decorative topcoat layer 5 is provided on the printing ink layer 2 with a clear topcoat layer 5 formed of a two-component curing type clear resin having adhesiveness and flexibility. 2. A building material characterized in that the decorative paper A for building material is laminated on the surface of a base material B made of either plywood, particle board or medium density fiberboard via an adhesive. Decorative board.