JP3161071B2 - Embossed decorative sheet - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an embossed decorative sheet having a picture and an embossed pattern on its surface, and more particularly to an embossed decorative sheet used as a decorative board by bonding it to the surface of a wood board, an inorganic board, a steel plate or the like with an adhesive. Regarding the sheet.

[0002]

2. Description of the Related Art Conventionally, a vinyl chloride resin sheet has been most commonly used as an embossed decorative sheet used for the above applications. However, in recent years, it has been said that chlorine is generated during incineration of vinyl chloride, which causes acid rain and dioxin. Therefore, embossed decorative sheets that do not use a vinyl chloride resin sheet are also demanded from the viewpoint of environmental problems.

[0003] However, there was no suitable resin usable for this purpose in a resin sheet other than the vinyl chloride resin. This satisfies the moderate flexibility of vinyl chloride resin and the well-balanced properties of embossability, abrasion resistance, surface hardness, chemical resistance, stain resistance, etc. of resin sheets other than conventional vinyl chloride resin. Because there was nothing.

A method of extruding and laminating a thermoplastic resin and embossing simultaneously or immediately or a method of laminating a thermoplastic resin film by a dry laminating method and embossing at the same time are already known. No measures were taken to remove vinyl chloride in using a vinyl chloride resin sheet.

[0005]

DISCLOSURE OF THE INVENTION The present invention has been made to solve these problems, and it is an object of the present invention to use a material other than the vinyl chloride resin to exceed the properties of the vinyl chloride resin. The purpose is to provide a decorative sheet with properties, especially to provide an embossed decorative sheet with excellent emboss reproducibility, durability, chemical resistance, abrasion resistance, weather resistance, flexibility, etc. is there.

[0006]

In order to solve the above-mentioned problems, the present invention provides a pattern ink layer and an adhesive on a surface of a base sheet made of a opaque polyolefin resin containing a filler and a color pigment. An embossed decorative sheet obtained by laminating a thermoplastic transparent elastomer film layer through a layer and embossing by embossing, wherein the pattern ink layer is made of an amide-based or urethane-based ink, and the thermoplastic transparent Provided is an embossed decorative sheet, wherein the elastomer film is a styrene-based, olefin-based, urethane-based, fluororubber-based, polyamide-based or ester-based elastomer film.

Hereinafter, a detailed description will be given with reference to the drawings. As the base sheet a, a polyolefin-based resin is used in consideration of pollution-free properties, price and performance. In addition, since it is used as a decorative board, a filler and a coloring pigment are contained so as to have a hiding property.

[0008] As an ink used for an arbitrary pattern ink layer b, an amide-based or urethane-based ink is preferable. Acrylic vinyl chloride-vinyl acetate copolymer inks, which are often used in the case of vinyl chloride sheets, do not adhere to polyolefin resins, so care must be taken in the composition of the ink.

Although there is no particular limitation on the composition of the adhesive for the adhesive layer c, it is necessary that the adhesion to the pattern ink layer and the thermoplastic transparent elastomer film layer d described later be good. For example, a polyether-based, polyester-based, or urethane-based adhesive is suitable.

At the same time, a thermoplastic transparent elastomer film layer d is laminated and adhered thereto, and at the same time, an emboss pattern e is mechanically provided by an emboss roll. Here, as the thermoplastic transparent elastomer film, polystyrene-based, polyolefin-based, urethane-based, fluorine rubber-based, polyamide-based, and polyester-based films are desirable. In addition to the above, there are vinyl chloride elastomers, but they are out of the category from the viewpoint of devinyl chloride. The elastomers were selected because of their flexibility, heat resistance, stain resistance, weather resistance,
This is because the embossability when embossing at the same time as lamination is equal to or higher than that of vinyl chloride.

These thermoplastic transparent elastomer films are composed of polystyrene as a hard segment in a styrene-based elastomer and polybutadiene or hydrogenated polybutadiene as a soft segment, and a polyolefin as a hard segment in an olefin-based elastomer. And a soft segment made of ethylene-propylene rubber. In the following urethane-based urethane and polyester or polyether, in the case of fluororubber, fluororesin and fluororubber,
The polyamide system is composed of polyamide and polyether or polyester, and is made of a so-called polymer alloy in which a soft segment of rubber is simply blended or crosslinked with a hard segment serving as a main skeleton. It is a film characterized by the fact that physical properties that could not be obtained by itself were obtained.

[0012]

As described above, by using a opaque polyolefin resin containing a filler and a coloring pigment in a base sheet as in the present invention, the same printability, heat resistance and weather resistance as those of a vinyl chloride film can be obtained. And flexibility can be imparted. Also, by using a thermoplastic transparent elastomer film as a film to be laminated and embossed on the base film, it is possible to impart the same heat resistance, stain resistance, weather resistance, flexibility, and embossability as a vinyl chloride film Thus, the obtained embossed decorative sheet has physical properties equivalent to or better than those of a vinyl chloride embossed decorative sheet.

[0013]

【Example】

<Example 1> As a base sheet, a polyolefin-based inorganic material-filled colored sheet (manufactured by Tatsuno Chemical Co., Ltd .: "Tuffer") was used, and an amide-based ink (manufactured by Toyo Ink Manufacturing Co., Ltd.) was formed on the surface by gravure printing. : “PANN color”). On top of this, a polyester adhesive (manufactured by Toyo Morton Co., Ltd .: “AD80”)
6)) and dried with warm air, and then laminated as a thermoplastic transparent elastomer film layer a sheet in which a polyolefin-based elastomer (manufactured by Nippon Synthetic Rubber Co., Ltd .: “H4900N”) is formed into a film, and the embossing roll is passed through at 120 ° C. Thus, embossing and laminating were simultaneously performed to obtain an embossed decorative sheet. The thickness of each layer is 100μ
m, the adhesive layer was 2 μm, and the thermoplastic transparent elastomer film layer was 50 μm.

Although the resulting embossed decorative sheet lacked a little transparency, it was excellent in flexibility, good in emboss reproducibility and stain resistance, and could be sufficiently substituted for a vinyl chloride decorative sheet.

<Example 2> A wood grain pattern was printed on the same base sheet as in Example 1 using a urethane-based ink (Toyo Ink Mfg. Co., Ltd .: "NEW-LP Super") by a gravure printing method. Then, a vinylidene fluoride / acrylic adhesive was applied thereon, dried with warm air, and then a sheet made of a fluoroelastomer (“Cefralsoft” manufactured by Central Glass Co., Ltd.) was used as a thermoplastic transparent elastomer film layer. Embossing and lamination were performed simultaneously in the same manner as in Example 1 to obtain an embossed decorative sheet. The thickness of each layer is 100 μm for the base sheet and 5 μm for the adhesive layer.
m, the thermoplastic transparent elastomer film layer was 50 μm.

The embossed decorative sheet obtained had not only excellent flexibility, excellent scratch resistance, stain resistance and weather resistance on the surface, but also extremely good emboss reproducibility.

<Example 3> An isocyanate-based adhesive ("EL44", manufactured by Toyo Morton Co., Ltd.) was used on a sheet on which a pattern was printed with the same ink using the same base sheet as in Example 2.
3)), air-dried, and a sheet obtained by forming a urethane-based elastomer ("Paraprene", manufactured by Nippon Polyurethane Co., Ltd.) as a thermoplastic transparent elastomer film on this was also applied in the same manner as in Examples 1 and 2. Embossing and laminating were carried out simultaneously by the method described above to obtain an embossed decorative sheet. The thickness of each layer was 100 μm for the substrate, 1 μm for the adhesive layer, and 50 μm for the thermoplastic transparent elastomer film layer.

The embossed decorative sheet thus obtained has stain resistance,
It had excellent scratch resistance and was particularly flexible.

[0019]

According to the present invention, by using a polyolefin film containing a filler and a coloring pigment in a base sheet as in the present invention, the same printability, heat resistance, weather resistance and flexibility as those of a vinyl chloride film can be imparted. Becomes possible. In addition, by using a thermoplastic transparent elastomer as a film to be laminated and embossed on the base film, the heat resistance, stain resistance, weather resistance,
Flexibility and embossing suitability can be imparted, and the obtained embossed decorative sheet has physical properties equivalent to or higher than those of a vinyl chloride embossed decorative sheet.

[0020]

[Brief description of the drawings]

FIG. 1 is an explanatory view of a cross section of an embossed decorative sheet according to the present invention.

[Explanation of symbols]

 a: base sheet b: arbitrary pattern ink layer c: adhesive layer d: thermoplastic transparent elastomer film layer e: embossed pattern

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B32B 1/00-35/00

Claims (1)

(57) [Claims] 1. A thermoplastic transparent elastomer film layer is laminated on a surface of a base sheet made of an opaque polyolefin resin containing a filler and a color pigment via a picture ink layer and an adhesive layer, and embossed. An embossed decorative sheet provided with an embossed pattern by processing, wherein the pattern ink layer is made of an amide-based or urethane-based ink, and the thermoplastic transparent elastomer film is a styrene-based, olefin-based, urethane-based, fluororubber-based, An embossed decorative sheet comprising a polyamide or an ester.