JP-7856007-B2 - Decorative sheet, decorative tack sheet, decorative board, and method for manufacturing decorative sheet

JP7856007B2JP 7856007 B2JP7856007 B2JP 7856007B2JP-7856007-B2

Inventors

戸賀崎浩昌
河西優衣

Assignees

ＴＯＰＰＡＮホールディングス株式会社

Dates

Publication Date: 20260511
Application Date: 20211112
Priority Date: 20201118

Claims (15)

A printed pattern layer is formed on the back side of a transparent base material made of transparent olefin sheets, with a pattern printed on it. A surface protective layer is formed on the surface side of the transparent raw material. A decorative sheet having no laminate layer made of another film on either the front or back side of the transparent base material, The transparent raw material is to which a dispersant is added as an additive . The aforementioned dispersant as an additive includes a nucleating agent vesicle in which a nucleating agent is encapsulated within the vesicle . The average particle size of the nucleating agent is half of the visible light wavelength range of 400 nm to 750 nm. The aforementioned transparent raw material is a two-type, three-layer structure in which a transparent skin layer, a transparent core layer, and another transparent skin layer are laminated in that order. The decorative sheet is characterized in that the dispersant is added to the transparent skin layer .
The decorative sheet according to claim 1, characterized in that the printed pattern layer and the opaque layer are formed sequentially on the back side of the transparent base material.
The decorative sheet according to claim 1 or 2, characterized in that multiple layers are formed on the back side of the transparent base material, and a primer layer is formed at the position furthest from the transparent base material among the multiple layers.
On the back side of the transparent raw material, which is made of transparent olefin sheet, only a printed pattern layer and an opaque layer are formed in this order. The decorative sheet has only a surface protective layer formed on the surface side of the aforementioned transparent raw material. The transparent raw material is to which a dispersant is added as an additive . The aforementioned dispersant as an additive includes a nucleating agent vesicle in which a nucleating agent is encapsulated within the vesicle . The average particle size of the nucleating agent is half of the visible light wavelength range of 400 nm to 750 nm. The aforementioned transparent raw material is a two-type, three-layer structure in which a transparent skin layer, a transparent core layer, and another transparent skin layer are laminated in that order. The decorative sheet is characterized in that the dispersant is added to the transparent skin layer .
On the back side of the transparent raw material, which is made of transparent olefin sheet, only a printed pattern layer, an opacity layer, and a primer layer are formed in this order. The decorative sheet has only a surface protective layer formed on the surface side of the aforementioned transparent raw material. The transparent raw material is to which a dispersant is added as an additive . The aforementioned dispersant as an additive includes a nucleating agent vesicle in which a nucleating agent is encapsulated within the vesicle . The average particle size of the nucleating agent is half of the visible light wavelength range of 400 nm to 750 nm. The aforementioned transparent raw material is a two-type, three-layer structure in which a transparent skin layer, a transparent core layer, and another transparent skin layer are laminated in that order. The decorative sheet is characterized in that the dispersant is added to the transparent skin layer .
The decorative sheet according to any one of claims 1 to 3, characterized in that a sealer layer is provided between the back side of the transparent base material and the printed pattern layer to improve adhesion with the printed pattern layer.
The decorative sheet according to any one of claims 1 to 6 , characterized in that an inorganic filler is added to the transparent skin layer.
The decorative sheet according to any one of claims 1 to 7 , characterized in that an embossed portion synchronized with the pattern is formed on the surface side of the surface protective layer.
The decorative sheet according to claim 8 , characterized in that the embossed portion extends from the surface side of the surface protective layer toward the transparent base material, and a portion of it penetrates the transparent base material.
The decorative sheet according to any one of claims 1 to 9 , characterized in that the printed pattern layer is a single color.
A decorative tack sheet using the decorative sheet according to claim 3 or 5, characterized in that the side of the primer layer of the decorative sheet has an adhesive layer and a release liner.
A decorative panel using the decorative sheet according to claim 3 or 5, characterized in that a substrate is bonded to the side of the primer layer of the decorative sheet.
A first step in manufacturing a transparent raw material by extruding a transparent core layer made of a transparent polypropylene-based thermoplastic resin and transparent skin layers located on the front and back sides of the transparent core layer, respectively, wherein a dispersant is added as an additive to the thermoplastic resin, and the two layers are extruded together. A second step involves forming a printed pattern layer on the back side of the transparent raw material manufactured in the first step, The process includes a third step of forming a surface protective layer on the surface side of the transparent raw material, either after or before the second step, In the first step, the dispersant as an additive includes a nucleating agent vesicle in which a nucleating agent is encapsulated within the vesicle. The average particle size of the nucleating agent is half of the visible light wavelength range of 400 nm to 750 nm. A method for manufacturing decorative sheets, characterized by in-line production.
The method for manufacturing a decorative sheet according to claim 13 , characterized in that, in the second step, the printed pattern layer and the concealing layer are formed in this order on the back side of the transparent raw material.
The method for manufacturing a decorative sheet according to claim 13 or claim 14 , characterized in that, in the second step, a primer layer is formed on the back side of the transparent raw material, on the side furthest from the printed pattern layer.

Description

This invention relates to decorative sheets, decorative adhesive sheets, decorative panels, and methods for manufacturing decorative sheets, which are used, for example, indoors and applied to the surfaces of fixtures and joinery, allowing for matching the patterns of fixtures and joinery in each house or room. This invention not only reduces the number of manufacturing steps by adding a dispersant as a nano-sized additive, but also provides a hard decorative sheet even in a thin film. Traditionally, decorative sheets have mainly been made of olefin-based materials due to the problem of gases during combustion (see Patent Documents 1-3). To protect the design from surface abrasion, a multi-layered decorative sheet is widely used, in which a transparent olefin sheet is laminated onto a colored olefin sheet that has been printed on top (see paragraph [0034] and Figure 1 of Patent Document 2, and paragraph [0059] and Figure 1 of Patent Document 3). Japanese Patent Publication No. 2006-110929Japanese Patent Publication No. 2015-199313Japanese Patent Publication No. 2016-101663 This is a cross-sectional view of a decorative sheet according to Embodiment 1.This is a cross-sectional view of the decorative sheet according to Embodiment 2.This is a cross-sectional view of the decorative sheet according to Embodiment 3.This is a cross-sectional view of the decorative sheet according to Embodiment 4. (Embodiment 1) One embodiment of the present invention (hereinafter referred to as "Embodiment 1") will be described below with reference to the drawings. Here, the drawings are schematic, and the relationship between thickness and planar dimensions, the ratio of the thickness of each layer, etc., may differ from reality. Furthermore, the embodiments shown below illustrate configurations for realizing the technical concept of the present invention, and the technical concept of the present invention is not limited to the materials, shapes, structures, etc. of the components described below. The technical concept of the present invention can be modified in various ways within the technical scope defined by the claims described in the patent claims. (Decorative sheet 10 according to Embodiment 1) In Figure 1, 10 is a decorative sheet, which is not shown in the illustration, but is used, for example, indoors and is applied to the surfaces of joinery (interior doors, entrance storage) and interior trim (trimming, moldings, baseboards, window frames, door frames), and is used to match the patterns of joinery and interior trim for each house or room. The decorative sheet 10 includes the following layers, each layer being provided in order from (1). The following points (1) to (5) will be discussed later. (1) Primer layer 30 (2) Colored layer 40 (3) Printed pattern layer 50 (4) Transparent original fabric 20 (5) Surface protective layer 60 Furthermore, the layers of the decorative sheet 10 are not limited to (1) to (5) described above. For example, as shown in Figure 1, an adhesive layer 70 (6) and a release paper 80 (7) may be added to the side of the primer layer 30 to form a decorative tack sheet 11. Alternatively, an embossed portion 90 that matches the pattern of the printed pattern layer 50 may be formed on the surface side of the surface protection layer 60. Or, although not shown, a substrate may be bonded to the side of the primer layer 30 to form a decorative board. Furthermore, the above-mentioned "(1) Primer layer 30" may be omitted. That is, if the above-mentioned "(2) Colored layer 40" has the function of a primer layer, the primer layer 30 can be omitted. (Transparent original fabric 20) The transparent raw material 20 serves as a support for the decorative sheet 10 and is made of a transparent olefin sheet. As shown in Figure 1, the transparent raw material 20 is manufactured with two types of three layers: a transparent skin layer 21, a transparent polypropylene core layer 22, and another transparent skin layer 21. The transparent skin layer 21 is formed by adding a nano-sized dispersant to a transparent polypropylene-based thermoplastic resin. In addition to the nano-sized dispersant, an inorganic filler is also added to the transparent skin layer 21. (Main features of decorative sheet 10) The main features of the decorative sheet 10 according to this first embodiment are as follows: (1) The decorative sheet 10 according to this embodiment 1 is a single-layer film made of a transparent olefin sheet, on the back side of which a printed pattern layer 50, a coloring layer 40, and a primer layer 30 are sequentially formed, and on the front side of the transparent base material 20 is a surface protective layer 60, and neither the front nor the back side of the transparent base material 20 has a laminate layer made of another film. The transparent base material 20 is manufactured by extrusion molding using a transparent polypropylene-based thermoplastic resin so as to have a configuration of two types and three layers