JP2008290349A - Decorative sheet having inlay pattern - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a decorative sheet with an inlay pattern, having a vessel pattern of a boardleaf tree as well as a grain texture and having weatherability and good resistance to the deterioration of surface properties while exhibiting a three-dimensional feel and a feel of depth. <P>SOLUTION: The decorative sheet is characterized in that, on a wood base material at least the surface of which is composed of a needle-leaved tree material, there are provided a transparent or translucent adhesive agent layer, an inlay pattern layer consisting of a combination of plural grain patterns of broadleaf tree materials, a transparent olefin resin layer having an embossed pattern on the surface and a surface protective layer in this order. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a decorative sheet used for building materials and indoor consumer goods materials, and in particular, an inlaid pattern decorative sheet having a three-dimensional inlay that improves design while taking advantage of the shine of a wood board. About.

  One of the so-called “parquetry” techniques is used to create a picture board by fitting wood of various colors, thinly cut it with Kanna, and pasted it on Japanese paper. It is.

On the other hand, as a decorative plate used as a surface material for interiors and furniture, a veneer decorative plate in which a single wood plate is bonded to the surface of a base material has been widely used. In recent years, however, natural resources, especially cherry trees, teak, walnuts, and other hardwood materials have been depleted, and these patterns have been printed on substrates such as plywood and MDF (Medium Density Fiberboard) as an alternative to veneer veneer using these. Many decorative panels are used in which the decorative sheets are pasted together. However, with this method, there is a limit to the expression of the so-called shimmering feeling and the conduit shape that wood originally has.
JP-A-9-85897

  The present invention has been made in order to solve these problems, and the problem is that while having a texture of wood, it has a hardwood wood conduit pattern, and has a three-dimensional feeling and a depth feeling. An object of the present invention is to provide an inlaid decorative sheet having weather resistance and various surface resistances.

  The present invention solves this problem, that is, the invention according to claim 1 is characterized in that a transparent or translucent adhesive layer and a plurality of broad-leaved wood grains are formed on a wooden substrate having at least a surface made of softwood material. An inlay pattern decorative sheet comprising an inlay pattern layer composed of a combination of patterns, a transparent olefin resin layer having an embossed uneven pattern on the surface, and a surface protective layer in this order.

  The invention according to claim 2 is an inlay comprising a combination of a softwood wood grain pattern layer, a transparent or translucent adhesive layer, and a plurality of hardwood wood grain patterns on a base material comprising a colored thermoplastic resin layer. An inlaid decorative sheet comprising a handle layer, a transparent olefin resin layer having an embossed uneven pattern on the surface, and a surface protective layer in this order.

  According to the invention of claim 1, it is possible to make use of the texture by having a softwood material on the ground, and since it has an inlaid pattern layer and an embossed uneven pattern across the thickness of the adhesive layer and the transparent olefin-based layer, As a result, the surface protective layer can provide various resistances to the surface.

  According to the invention of claim 2, instead of the softwood material of claim 1, a colored thermoplastic resin layer provided with a wood grain pattern of softwood material does not consume natural resources, and has various uneven surfaces and curved surfaces. The effect that the pasting to etc. becomes possible is produced.

  Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 shows a cross-sectional structure of an embodiment of the inlaid decorative sheet of the present invention. A transparent or translucent adhesive layer 2, an inlaid pattern layer 3 composed of a combination of a plurality of hardwood materials, and an ultraviolet absorber having an embossed concavo-convex pattern on the surface. The added transparent olefin resin layer 4 and the surface protective layer 5 are provided. Moreover, the state of the surface of one Example of the inlay pattern decorative sheet of this invention is shown in FIG.

  FIG. 2 shows a cross-sectional structure of another embodiment of the inlaid decorative sheet of the present invention. On a base material 6 made of a colored thermoplastic resin layer, a softwood wood grain pattern layer 7, a transparent or translucent adhesive layer 2, an inlay pattern layer 3 made of a combination of a plurality of hardwood wood grain patterns, and embossed on the surface A transparent olefin resin layer 4 and a surface protective layer 5 to which an ultraviolet absorber having an uneven pattern is added are provided.

  As the woody base material 1 having a surface made of softwood material in the present invention, a relatively inexpensive softwood material board or a hardwood material having a poor conduit pattern is used.

  As the adhesive used for the adhesive layer 2 in the present invention, a two-component water-based or oil-based urethane-based adhesive or a one-component moisture-curing hot melt adhesive is preferably used, but is not particularly limited thereto, and is transparent. Alternatively, it is composed of a combination of a plurality of hardwood wood grain patterns and a translucent base material 6 made of a colored thermoplastic resin layer provided with a woody base material 1 or a softwood wood grain pattern layer 7 made of a softwood material. What is necessary is just to be able to adhere | attach with the transparent olefin resin layer 4 which added the ultraviolet absorber which has the embossed uneven | corrugated pattern on the surface which has the inlay pattern layer 3. FIG.

  As the inlaid pattern layer 3 composed of a combination of a plurality of hardwood wood grain patterns in the present invention, a two-component urethane resin binder (matrix), a vinyl chloride-vinyl acetate copolymer resin, an acrylic resin, a polyester resin, and the like are pigmented. What was provided in the resin film concerning the transparent olefin resin layer 4 which added the ultraviolet absorber which has the embossing unevenness pattern on the surface mentioned below by gravure printing etc. using the added ink is used suitably, but especially this The present invention is not limited, and any material that can form an inlaid pattern composed of a combination of a plurality of wood grain designs having a wood grain design of at least one type of hardwood material may be used. The ink can be selected for each inlaid pattern, transparent, translucent, or opaque, and is not particularly limited, but at least some of the ink is transparent or translucent. Therefore, it is possible to make use of the texture of the softwood wood grain pattern layer 7 provided on the woody base material 1 made of coniferous material or the base material 6 made of a colored thermoplastic resin layer.

  Examples of the olefin resin used in the transparent or translucent olefin resin layer 4 to which an ultraviolet absorber having an embossed concavo-convex pattern is added in the present invention include homo- and random polypropylene resins, polyethylene resins, polymethylpentene resins, and the like. Can be used. As the UV absorber, UV absorbers such as benzotriazoles, triazines, and benzoimines, and hindered amine and hindered phenol light stabilizers can be used.

  As the surface protective layer 5 in the present invention, a two-component urethane resin, a thermosetting resin, an ultraviolet curable resin, an electron beam curable resin, or the like can be used.

  As the colored thermoplastic resin layer 6 in the present invention, a thermoplastic resin such as homo, random polypropylene resin, polyethylene resin, polymethylpentene resin having a thickness of 20 μm to 200 μm can be used.

  As a method for producing the inlay pattern decorative sheet of the present invention, first, as a transparent or translucent olefin resin layer 4 to which an ultraviolet absorber having an embossed concavo-convex pattern is added, an ultraviolet absorber is used in a molten state of the olefin resin. It can be obtained by adding, extruding from a T-die, solidifying while being compressed with a cooling roll and a pressure roll provided with an uneven shape, and forming into a sheet. The thickness of the sheet is preferably 80 to 150 μm, and the embossing depth is 95% or less of the sheet thickness at the maximum, which is a preferable range in terms of sheet strength, transparency, and design. .

  Thereafter, the surface of the transparent or translucent olefin-based resin layer 4 added with an ultraviolet absorber having an embossed concavo-convex pattern on the surface thus obtained is exposed on the back surface opposite to the surface having the embossed concavo-convex pattern, such as gravure printing. By the method, the inlaid pattern layer 3 composed of a combination of a plurality of hardwood wood grain patterns can be provided.

  Further, after that, the surface protective layer 5 can be provided by applying a curable resin to the embossed surface and then curing it. Although not shown, the surface protective layer 5 may be provided after performing a wiping process such that the embossed surface is subjected to a surface treatment such as corona treatment and then the embossed recess is filled with ink and the excess ink is scraped off.

  Thereafter, the inlaid pattern layer 3 side and the base material 6 made of a colored thermoplastic resin layer provided with a woody base material 1 or a softwood wood grain pattern layer 7 having a surface made of softwood material are bonded via an adhesive layer 3. The inlaid decorative sheet of the present invention. The adhesive layer 2 may be applied to the base material side, or a part thereof may be applied to the inlaid pattern layer 3. The thickness of the adhesive layer is preferably about 1 to 10 μm.

  Homopolypropylene is used as a polyolefin-based resin, extruded using an extruder while heated to a molten state, and passed between an embossing cooling roll and a pressure roll with embossing unevenness that is synchronized with the inlay pattern to be printed later. The sheet is peeled from the embossing cooling roll via a peeling roll disposed on the opposite side of the pressure roll across the embossing cooling roll, and a sheet having a sheet thickness of 100 μm and a maximum embossing depth of 95 μm or less is formed. A UV-curable coating is applied as a surface protection layer from the embossed surface to a dry conversion equivalent of 6 g / m2, and finally a two-component urethane resin transparent, translucent, opaque on the surface opposite to the embossed surface An inlaid pattern made of ink was printed by gravure printing, and once dried, the sheet was wound up.

  A pine board, which is a softwood material, is used as the woody base material 1 whose surface is made of softwood material, and a transparent urethane adhesive is used as an adhesive layer on this surface so that it becomes about 1 g / m2 after drying. It applied, bonded with the printing surface of the inlay pattern of the said sheet | seat, and pressed using the press machine at 30-50 degreeC, and the inlay pattern decorative sheet of this invention was obtained. The resulting decorative sheet has a different design like an inlaying member, and has the design as if combining many hardwoods while taking advantage of the luster and shine of the three-dimensional base material pine. became.

  Instead of the wood substrate 1 made of coniferous material, a pigment resin with a layer thickness of 200 μm is added and an opaque colored polypropylene resin sheet is used to print a pattern of coniferous material by gravure printing. In the same manner as in No. 1, an inlaid decorative sheet of the present invention was obtained. The resulting decorative board has a different design like an inlay member, and has the design as if combining many hardwoods while taking advantage of the luster and shine of the three-dimensional base material pine. became.

  The inlay pattern decorative sheet according to the present invention can be used as a building material / indoor consumer goods material that requires particularly high design.

It is explanatory drawing which shows the structure of the cross section of one Example of the inlay pattern decorative sheet of this invention. It is explanatory drawing which shows the structure of the cross section of the other Example of the inlay pattern decorative sheet of this invention. It is a figure which shows the state of the surface of one Example of the inlay pattern decorative sheet of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Wood base material 2 ... Adhesive layer 3 ... Inlaid pattern layer 4 ... Transparent olefin resin layer 5 ... Surface protection layer 6 ... Colored thermoplastic resin base material 7 ... Wood grain pattern layer of softwood

Claims (2)

  At least the surface of the wood substrate made of coniferous material, a transparent or translucent adhesive layer, an inlaid pattern layer composed of a combination of a plurality of hardwood wood grain patterns, a transparent olefin resin layer having an embossed uneven pattern on the surface, An inlaid decorative sheet, comprising a surface protective layer in this order.   On a substrate made of a colored thermoplastic resin layer, a softwood wood grain pattern layer, a transparent or translucent adhesive layer, an inlaid pattern layer composed of a combination of multiple hardwood wood grain patterns, and an embossed uneven pattern on the surface An inlaid decorative sheet comprising a transparent olefin resin layer and a surface protective layer in this order.