JP2598904B2 - Decorative sheet - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a decorative sheet for architectural members mainly used for housing members, such as wall panels, ceiling materials, doors, skirting boards and the like.

[Conventional technology]

As a conventional decorative sheet, paper such as tissue paper is printed in the usual way,
Printed on paper such as thin paper, etc. with a surface coat layer of amino alkyd resin or urethane resin, then laminated on a polyvinyl chloride resin film, polyester resin film, etc., and printed on a plastic film such as polyvinyl chloride resin film And a transparent polyvinyl chloride resin film laminated thereon.

However, the above-mentioned ones have insufficient decorative sheet strength, are not suitable for curved surface processing such as wood-end winding and V-cut, and have a physical or physical property such as abrasion resistance and water resistance of the surface. Poor chemical properties.

, Those using a polyvinyl chloride resin film are inferior in physical properties such as heat resistance, cold resistance and weather resistance, and those using a polyester resin film are polyester resin The film has poor adhesiveness to paper and printing ink, and has the disadvantage that embossing usually performed in this type of decorative sheet is difficult.

[Problems to be solved by the invention]

Therefore, in the present invention, because the strength of the decorative sheet is insufficient, which is a drawback of the conventional technology,
Not suitable for curved surface processing such as V-cut, surface wear resistance, physical or chemical properties such as water resistance are inferior, those using polyvinyl chloride resin film, Heat resistance, cold resistance, inferior physical properties such as weather resistance, in those using a polyester resin film, the polyester resin film has poor adhesion to paper and printing ink, It is an attempt to eliminate all the points that embossing is usually difficult in this type of decorative sheet.

[Means for solving the problem]

In the present invention, the above points were able to be solved by providing the acrylic resin layer on the printing surface of the paper via the transparent resin layer.

That is, the present invention relates to a decorative sheet for a building member in which a printing layer, a transparent polyolefin resin layer, and an acrylic resin layer are laminated in this order on a paper sheet base material.

Further, as preferred embodiments of the present invention, those in which the acrylic resin layer is formed of an acrylic resin film, those in which the transparent resin layer is a polyolefin resin layer, those having a further printing layer on the upper surface of the acrylic resin film, and And a print layer formed on an acrylic resin film via a gloss adjusting layer.

[Action]

In the present invention, the acrylic resin layer disposed on the surface, the wear resistance of the surface, heat resistance, cold resistance, weather resistance, because the water resistance is excellent, the surface properties of the decorative sheet is excellent, The acrylic resin layer is provided via the transparent resin layer, and there is no problem of adhesion between the acrylic resin layer and paper or printing ink. Furthermore, since the acrylic resin film is thermoplastic, embossing is easy.

〔Example〕

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

The cosmetic material of the present invention is typically, as shown in FIG.
A printing layer 2 is formed on a sheet substrate 1, and an acrylic resin layer 4 is laminated on the printing layer 2 via a transparent resin layer 3.

As shown in FIG. 2, a solid (meaning uniform and uniform) print layer 5 for concealing the base may be provided between the sheet substrate 1 and the print layer 2 as shown in FIG. Good. When the solid printing layer 5 is provided, concealing properties can be imparted even if the sheet base material 1 itself does not have concealing properties, and the surface of the sheet base material 1 can be arbitrarily colored by adding a coloring agent. Can be increased.

(Sheet Substrate) The sheet substrate 1 may be, for example, a paper base such as tissue paper, resin-mixed paper, or resin-impregnated paper, or a paper-based nonwoven fabric.
Use a thickness of about μm to 1000 μm, weighing 23 to 15
About 0 g / m ² is preferable.

The printing layer 2 is a pattern layer or a colored layer formed by printing an arbitrary pattern such as a wood pattern, an abstract pattern, and a stone pattern. The ink for forming the printing layer 2 includes a sheet substrate 1
In general, depending on the material and form of the resin, resins such as nitrified cotton, cellulose acetate, polyvinyl chloride, polyvinyl butyral, polyurethane, acrylic resin and polyester (these may be copolymers in some cases) Is used as a vehicle and colored with a dye or pigment. The printing layer 2 is generally formed by a printing method such as gravure, offset, letterpress, or screen.

The formation of the solid printing layer 5 is almost the same as that of the printing layer described above. However, as the ink, one containing multiple concealing pigments such as titanium dioxide in an amount of about 30 to 70 parts by weight to exhibit concealing properties is used. It is good to use, and in addition to each of the printing methods described above, a coating method such as roll coating may be used. Providing the solid printing layer 5 is useful for hiding the color of the sheet base material or the color of the substrate when a decorative sheet is attached to another substrate.

The acrylic resin layer 4 can be formed by applying and drying using an acrylic resin paint. However, it is better to apply an acrylic resin film formed in advance by another method. Good to use.

The acrylic resin film is mainly composed of acrylic acid (or methacrylic acid; hereinafter, “acryl-” is used in the meaning of “acryl- or methacryl-”) and derivatives thereof,
Acrylamide, acrylonitrile, an acrylic resin obtained by polymerizing, an acrylic copolymer resin with another monomer such as styrene, or a modified acrylic resin obtained by modifying the obtained resin, or an acrylic resin, A film is formed using an acrylic resin composition in which an acrylic copolymer resin or a modified acrylic resin is blended with another resin that can be blended as a main component as a raw material.

The thickness of the acrylic resin layer 4 is preferably from 10 μm to 100 μm.

The acrylic resin 4 can be stuck not only on the printed side of the sheet substrate 1 but also on the opposite side.

The transparent resin layer 3 is provided for the purpose of improving the adhesive strength between the acrylic resin layer 4 and the acrylic resin layer 4 if the acrylic resin layer 4 is directly provided on the sheet substrate 1 on which the print layer is provided, because good adhesive strength cannot be obtained. However, due to the presence of this layer, the overall thickness of the decorative sheet is increased, thereby imparting suitability for curved surface processing such as wood-end winding or V-cut, and furthermore, the design has a feeling of stickiness (a large amount of paint adheres). The effect of increasing the depth is also obtained.

Materials suitable for the transparent resin layer 3 are listed according to the forming method. When the transparent resin is extruded by the extrusion lamination method and the upper acrylic resin film is laminated, a polyolefin resin such as polypropylene is suitable. When bonding an acrylic resin film via a transparent resin layer by the method, rubber-based, acrylic-based, epoxy-based, urethane-based resins are suitable, and by a wet runate method, through the transparent resin layer When laminating an acrylic resin film, an emulsion of each resin such as a rubber emulsion system, a vinyl acetate-acryl emulsion system, and an epoxy emulsion system can be used.

 The thickness of the transparent resin layer 3 is 10 μm to 50 μm.

As described above, the presence of the transparent resin layer 3 increases the overall thickness of the decorative sheet, thereby imparting suitability for curved surface processing such as wood-end winding and V-cut, and further increases the sense of solidity in design. To do so, it is preferable to employ a method in which a polyolefin-based resin such as polypropylene is extruded by an extrusion lamination method and an upper acrylic resin film is bonded.

In the present invention, a gloss adjusting layer 6 can be provided on the acrylic resin layer 4. The gloss adjusting layer 6 has a function of adjusting the glossiness of the surface of the decorative sheet, improving the feeling of painting, or protecting the surface of the decorative sheet. The gloss adjusting layer 6 can be formed by printing or applying a paint in which a matting agent is added to obtain a desired gloss. Examples of the resin system of the paint used include polyurethane, acrylic, nitrocellulose, alkyd, polyester, polyvinyl butyral, melamine, cellulose acetate, polyvinyl chloride, polystyrene, and polyvinyl alcohol. Used. As the matting agent, mica, silica, alumina, calcium carbonate, diatomaceous earth, silica sand, shirasu balloon and the like can be used.

The decorative sheet of the present invention may further have a printed layer 2 'on the surface of the acrylic resin layer 4, as shown in FIG. The printed layer 2 'has the effect of improving the design and exhibiting a three-dimensional effect. The printing layer 2 'can be formed by means other than printing. The ink and printing method used when the printing layer 2 ′ is provided by printing are the same as those when the printing layer 2 is provided.

The pattern of the printed layer 2 ′ is arbitrary, but when the decorative sheet is made of wood grain, first, the printed layer 2 is formed as a wood grain pattern with or without a conduit, and then the printed layer 2 If the conduit pattern is formed as', the conduit pattern provided on the surface and the lower layer pattern can be seen to overlap, and a three-dimensional depth and three-dimensional effect can be obtained.

The printing layer 2 ′ may be provided on the acrylic resin layer 4 via a gloss adjusting layer 6 (not shown).

The decorative sheet of the present invention may be arbitrarily embossed on its surface by a hot embossing method or the like to emboss (irregularities).
Can be applied. The shape of the embossment is various, expressing the grain of the wood, reproducing the gloss of the painted board, combining the above and those, abstract pattern, stone pattern, cloth pattern,
And so on. Further, as a special thing included in these ranges, there is a hairline-shaped emboss, and this embossed shape is suitable for expressing the feeling of wood grain fibers, and particularly those having a pitch of 300 μm or less are used for wood grain fibers. Realize the feeling.

The decorative sheet of the present invention is laminated on a decorative board substrate via an adhesive.

Plywood, particle board, hard board, or wood board such as insulation board, gypsum board, asbestos perlite board, calcium silicate board, glass wool, or rock wool, inorganic board, iron board, zinc board, etc. Metal substrates such as aluminum plate, lead plate, etc .; foam substrates such as foamed polyethylene plate, expanded polystyrene plate, urethane foam or phenol foam; synthetic resin such as phenol plate, melamine plate, polyester plate, acrylic plate, vinyl chloride plate, etc. Substrates and the like may be used alone or in any combination. The shape of the decorative board substrate is not limited to a flat plate shape, but may be a curved shape or another shape.

As the adhesive used for laminating the decorative sheet on the decorative board substrate, general adhesives such as vinyl acetate, urethane, epoxy, and urea can be used. It is determined in consideration of the material of the surface to be bonded of the plate substrate.

As a method of laminating the decorative sheet on the decorative board substrate, a roll laminating method, a press laminating method, or the like is used, but a roll laminating method is preferable from the viewpoint of productivity. When the decorative board substrate has a curved shape, lamination is performed using a normal wrapping machine.

〔effect〕

The decorative sheet of the present invention has the above configuration, and the strength of the decorative sheet is sufficient. For this reason, the decorative sheet can be used for curved surface processing such as wood-end winding and V-cut, and has abrasion resistance and water resistance of the surface. Physical or chemical properties such as properties are sufficient, especially because it has excellent weather resistance, it can be used for exterior, heat resistance, compared with those using polyvinyl chloride resin film, It has excellent physical properties such as cold resistance and chemical properties such as stain resistance, and thus has excellent performance of withstanding long-term use without special maintenance. Further, since the acrylic resin layer is provided via the transparent resin layer, there is no problem in adhesiveness to paper or printing ink, and there is an advantage that embossing usually performed on this type of decorative sheet can be performed without any problem.

〔Example〕

 Hereinafter, examples showing the present invention more specifically will be described.

Example 1 Thin paper having a basis weight of 40 g / m ² (DB-40, Tenma Special Paper Co., Ltd.)
Was printed with an ink using nitrocellulose as a vehicle (manufactured by Morohoshi Ink Co., Ltd., MA) using a gravure rotary press to obtain wood grain printing paper.

A polyethylene resin (manufactured by Mitsui Polychemicals, Inc., Mirason 14) was coated on the obtained wood-grain printing paper using an extruder so as to have a film thickness of 20 μm, and separately prepared.
An acrylic resin film (HBS-001, 25 μm thick, manufactured by Mitsubishi Rayon Co., Ltd.) whose adhesive surface has been subjected to corona treatment beforehand is laminated, and a three-layer decorative sheet of wood grain printing paper / polyethylene / acrylic resin film I got

The decorative sheet thus obtained is excellent in physical and chemical performance, and the decorative sheet is coated with a vinyl acetate-based adhesive (AC-315, manufactured by Chuo Rika Co., Ltd.) for 12 m.
When laminated on a structural plywood having a thickness of m, there was no break even when V-cut processing was performed.

In terms of design, there was a total of 45 μm of resin on the printed layer, so that the feeling of holding and painting was excellent.

Further, when the weather resistance of the decorative sheet was examined by an accelerated test using a sunshine weatherometer, no abnormality was observed even after lapse of 2,000 hours.

Example 2 An acrylic resin film having a three-layer structure of wood grain printing paper / polyethylene / acrylic resin film obtained in the same manner as in Example 1 was coated on the surface with an acrylic resin film having the following composition and a gloss adjusting paint having a plate depth of 60 μm. Coat using a gravure roll,
A gloss adjusting layer was provided (the coating amount during drying was 3 g / m ² ).

Gloss control paint Acrylic polyol resin 100 parts by weight Xylene diisocyanate 30 parts by weight Microsilica 3 parts by weight Ethyl acetate 30 parts by weight Toluene 30 parts by weight ° C
Immediately after preheating with a heated heat drum, embossing was performed from the gloss adjustment layer side using a metal embossing roll having a hairline shape with an average pitch of 220 μm.

The decorative sheet thus obtained is very rich in design and has a fibrous feel of natural water, and in other respects it has the same performance as that obtained in Example 1. Was.

Example 3 An ink containing an acrylic resin as a vehicle (HAT, manufactured by Morohoshi Ink Co., Ltd.) was used on a paper-reinforced paper (CB-FIX65S, manufactured by Sanko Paper Co., Ltd.) having a basis weight of 65 g / m ^2. The solid printing layer for concealment and the oak pattern excluding the conduit were printed using a gravure rotary press to obtain a wood grain printing paper.

An acrylic resin-based film (Kanebuchi Chemical Co., Ltd.) was prepared separately while coating the obtained wood-grain printing paper with a polyethylene resin so as to have a thickness of 30 μm using an extruder. ), Sanduren film 007 natural) was laminated to obtain a three-layer structure of wood grain printing paper / polyethylene / acrylic resin film.

Further, an oak pattern conduit was printed on the surface of the film using a gravure rotary press with a urethane-based ink containing a matting agent (G & M, manufactured by Showa Ink Industry Co., Ltd.).

The thus obtained decorative sheet having a four-layer structure of wood grain printing paper / polyethylene / acrylic resin film / conduit printing layer had the same performance as the decorative sheet of Example 1.

Example 4 The decorative sheet obtained in Example 3 was embossed in the same manner as in Example 2. The obtained decorative sheet was very rich in design with a natural wood fiber feeling, and in other respects, had the same performance as that obtained in Example 3.

[Brief description of the drawings]

1 to 4 are sectional views showing the decorative sheet of the present invention. DESCRIPTION OF SYMBOLS 1 ... Sheet base material 2, 2 '... Printing layer 3 ... Transparent resin layer 4 ... Acrylic resin layer 5 ... Solid printing layer 6 ... Gloss adjustment layer

Claims (3)

(57) [Claims] 1. A printing layer (2) on a paper-like sheet substrate (1),
A decorative sheet for a building member comprising a transparent polyolefin resin layer (3) and an acrylic resin layer (4) laminated in this order. 2. The decorative sheet according to claim 1, wherein a printed layer (2 ′) is provided on the upper surface of the acrylic resin layer (4). 3. The decorative sheet according to claim 1, wherein a printed layer (2 ′) is provided on the upper surface of the acrylic resin layer (4) via an gloss adjusting layer (6).