JPH1052896A - Decorative sheet - Google Patents

Abstract

(57) [Summary] [Problem] No toxic gas is generated during incineration disposal.
To provide a decorative sheet excellent in post-processing design and quality. SOLUTION: In a manufacturing process such as a calendering method or a T-die sheet extruding method, a transparent or translucent polyolefin-based resin sheet 1 is provided with a desired embossing 2 with an embossing roll on the front surface, and the manufacturing method described above. A colored polyolefin-based resin sheet 3 suitable for printing and having smoothness is produced by the method, and a primer layer 4 and a desired pattern pattern layer 5 are sequentially printed on the surface of the sheet 3 with the printed surface of the sheet. , By laminating with the adhesive 6 by dry lamination method, there is no trouble due to thermal expansion and contraction,
No toxic gas is generated during incineration, and it has high workability.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative sheet to be applied for the purpose of surface decoration or surface protection of various kinds of furniture and building interior materials, and more specifically, a transparent or translucent polyolefin embossed in advance. Resin sheet,
The present invention relates to a decorative sheet in which a colored polyolefin-based resin sheet provided with a pattern is adhered via an adhesive.

[0002]

2. Description of the Related Art Conventionally, as a decorative sheet of this type, there is a vinyl chloride resin decorative sheet having high workability such as V-cut. This vinyl chloride resin decorative sheet is printed with a desired pattern on the surface of a colored vinyl chloride resin sheet into which a pigment or the like has been kneaded, and then another translucent or transparent vinyl chloride resin sheet is printed on the printed surface. It is common to perform heat fusion to form an integral decorative sheet. At this time, embossing that conforms to the pattern is inserted from above a translucent or transparent vinyl chloride resin sheet at the same time as the heat fusion, and the design is improved to create a realistic feeling such as a grain pattern.

[0003]

However, the conventional vinyl chloride resin decorative sheet has problems such as expansion and contraction due to thermal fusion caused by high-temperature heating, which affects the pattern or causes a flare phenomenon on the film. Had.

[0004] Further, since the vinyl chloride resin decorative sheet contains a halogen element, a toxic gas is generated at the time of incineration, and when sticking to a base material such as plywood, the plasticizer migrates to the adhesive layer. This causes problems such as poor adhesion and wrinkles due to expansion and contraction due to heat.

The present invention has been made in view of the above-mentioned problems of the prior art, and has as its object that there is no problem due to thermal expansion and contraction, no toxic gas is generated at the time of incineration, and V cut and the like. Another object of the present invention is to provide a decorative sheet having high processability.

[0006]

Means for Solving the Problems In order to achieve the above object, the invention of claim 1 is directed to a transparent or translucent polyolefin-based resin sheet having a desired embossed surface during a sheet manufacturing process. And a printed surface of a sheet formed by sequentially providing a primer layer and a pattern layer on a colored polyolefin-based resin sheet serving as a base material via a dry laminating adhesive. is there.

A second aspect of the present invention is the same as the first aspect, except that the surface emboss is filled with ink, and then a gloss adjusting layer is provided.

Here, the transparent or translucent sheet on the front side of the decorative sheet has a thickness of 0.05 to 0.30 mm, and the transparent or translucent sheet on the front side on which the primer layer and the pattern are sequentially printed. Are laminated with an adhesive by a dry lamination method.

The decorative sheet of the present invention has a transparent or translucent polyolefin resin sheet having an embossed surface, and a primer layer and a pattern are sequentially provided on a colored polyolefin resin sheet serving as a base material. This is a decorative sheet made by laminating the sheet with a sheet, and the ink is filled in the recesses of the surface embossed as needed to form a gloss adjusting layer. Since there is no heat fusion process by high-temperature heating, it is low-cost and has dimensional stability. It has excellent adhesiveness, designability, or workability, and generates toxic halogen-based gas during incineration. Not something.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing a first embodiment, and FIG. 2 is a sectional view showing a second embodiment.

In FIG. 1 and FIG. 2, a decorative sheet A has a transparent or translucent polyolefin resin sheet 1 on the front side and a desired embossing 2 applied to the surface thereof, and a colored polyolefin resin sheet of a base sheet on the back side. 3 is provided with a primer layer 4, a picture pattern layer 5, and an adhesive layer 6, and the above-mentioned resin sheet 1 on the front side is adhered to the printed surface. 7 and a gloss adjusting layer 8 is provided.

The transparent or translucent polyolefin resin sheet I on the front side of the decorative sheet A can be produced by a calender method or a T-die sheet extrusion method, similarly to a conventional vinyl chloride sheet.

Here, embossing 2 is previously put on the surface of the sheet in-line because the sheet once cooled and solidified is
This is because the polyolefin-based resin is cold-crystallized and the thermal dimensional stability is improved, so that it is difficult to provide sharp embossment in a later step.

Further, the embossed transparent or translucent polyolefin resin sheet 1 and the printed colored polyolefin resin sheet 3 are adhered to each other by an adhesive using a dry lamination method. This is because it is most suitable for producing a stable embossed decorative sheet having no dimensional change such as a color tone and a pattern of a picture pattern.

As a raw material for the polyolefin resin, general-purpose resins such as polyethylene, polypropylene, and polystyrene may be used. As the color pigment of the colored olefin-based resin sheet, a commonly used organic or inorganic pigment can be used. In order to improve the hiding power, inorganic pigments such as titanium dioxide, zinc white, trioxide, and antimony are suitable. The addition amount is preferably about 5 to 15%.

The thickness of the transparent or translucent polyolefin-based resin sheet 1 and the colored polyolefin-based resin sheet 3 is 0.05 to 0. 0 in view of the post-processability and material cost such as V-cut, lapping or edge. 3
A thickness of 0 mm is preferred.

The purpose of providing the primer layer 4 on the colored polyolefin resin sheet 3 is to improve the adhesion between the picture pattern layer 5 and the colored polyolefin resin.

As the primer resin, acryl, epoxy, urethane, acryl-modified urethane and the like can be considered. In this case, a two-component curing type of an acrylic-modified urethane resin is preferable. Here, a coloring primer can be used if necessary to further improve the concealing property. As the coloring agent, general organic pigments, inorganic pigments, dyes and the like can be used according to the purpose.

The picture pattern layer 5 is printed with, for example, wood grain, stone grain, leather grain, cloth grain, an abstract pattern, and the like. As a vehicle of the ink to be used, a known general ink may be used, but by using a urethane elastomer ink, the adhesion can be improved.

As the wiping ink 7 to be filled in the concave portion of the embossment 2 provided on the surface of the transparent or translucent polyolefin resin sheet 1, paint or ink is used. For example, a synthetic resin such as a natural resin or a denatured resin thereof, a cellulose derivative, a polyvinyl chloride resin, an acrylic resin, a polyester resin, a polyurethane resin, or the like is used as a constituent material of the vehicle. Although a pigment or an ink obtained by adding an agent or the like can be used, a urethane resin and a two-pack type are optimal as a vehicle. The wiping can be performed by a conventional doctor blade method or a roll coater method.

The gloss adjusting layer 8 is formed by applying a paint by a gravure coat, a roll coat, an air knife coat or the like in order to adjust the glossiness of the surface of the decorative sheet. Also has the role of. In addition,
This gloss adjusting layer 8 may be transparent or colorless, transparent or matte.

A thermosetting resin such as a polyester resin, an epoxy resin, and a polyurethane resin is used as a vehicle of the paint for forming the gloss adjusting layer 8. In addition, an appropriate amount of matting agent is dispersed in the paint as needed to adjust the gloss to a desired level. As the matting agent, mica, silica, alumina, calcium carbonate, diatomaceous earth and the like are used.

The adhesive layer 6 is formed by applying an adhesive to one surface of one of the sheets to be adhered by a dry lamination method, passing the adhesive between rolls while applying pressure, and laminating.
The adhesive layer 6 can be applied by a reverse roll, a gravure roll, an air knife coater or the like. As the kind of the adhesive to be applied, a resin such as a rubber-based, polyester-based, acrylic-based, or urethane-based resin can be considered, but a urethane-based two-liquid curing type is preferable. Regarding the application amount to be applied, considering the application and price,
1.0 to 10 g / m ² is an appropriate amount.

This decorative sheet A is applied as a surface decorative material for various kinds of furniture, building interior materials and the like. For example, when a wooden decorative material is produced by a wrapping machine,
After applying an adhesive to the decorative sheet A, the decorative sheet A is laminated on a wooden substrate with a curved surface.

[0025]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below. Embodiment 1 is an embodiment based on the embodiment, and Embodiment 2 is an embodiment based on the second embodiment.

Example 1 A non-stretched colored polypropylene resin sheet 3 (manufactured by Riken Vinyl Co., Ltd.) having a thickness of 0.10 mm was provided with a primer layer and a grain pattern layer by a gravure rotary press on a printed surface and a surface. Using a urethane-based resin adhesive (manufactured by Toyo Morton), the back surface of a transparent unstretched polypropylene resin sheet having a thickness of 0.10 mm and having a wood grain conduit embossing 2 is 5 g / m 2 by dry lamination.
² / Dry coating and lamination to obtain the desired decorative sheet.

<< Embodiment 2 >> Wood grain embossed surface 2
A two-component urethane-colored ink (manufactured by Dainichi Seika Co., Ltd.) is applied to the surface of a transparent unstretched polypropylene resin sheet having a thickness of 0.10 mm by a gravure coater method. The colored ink adhering to the ink was removed, and at the same time, the colored ink was filled in the concave portion and solidified to obtain a wiping ink 7.

Next, a gloss adjusting paint 8 was coated thereon with a gravure roll having a plate depth of 45 μm to provide a gloss adjusting layer 8, thereby obtaining a wiping-like transparent polypropylene resin sheet. Next, a primer layer and a grain pattern layer are sequentially provided on the unstretched colored polypropylene resin sheet having a thickness of 0.10 mm serving as the back side by a gravure rotary press, and the printing surface and the back surface of the transparent wiping-like transparent polypropylene resin sheet are acrylic. Using a resin adhesive (manufactured by Toyo Morton), the sheets were laminated by a dry lamination method to obtain a desired decorative sheet.

On the surface of the decorative sheet obtained in Example 1,
After applying a two-part urethane coloring ink (manufactured by Dainichi Seika) by the gravure coating method, remove the coloring ink adhering to the portion other than the concave portion of the emboss 2 with a doctor blade and fill the concave portion with the coloring ink. It was solidified to obtain a wiping ink 7. Then, a gloss adjusting paint 8 was coated thereon with a gravure roll having a plate depth of 60 microns to obtain a gloss adjusting layer 8, and a decorative sheet having more excellent design properties was obtained.

[0030]

As described above, the decorative sheet of the present invention having the above-described structure can express a design pattern excellent in design by simply laminating on a decorative base material. It also has excellent workability such as cutting and wrapping. In addition, since no toxic gas is generated during incineration, environmental problems can be eliminated.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a first embodiment of a decorative sheet.

FIG. 2 is a sectional view showing a second embodiment of the decorative sheet.

[Explanation of symbols]

A decorative sheet 1 transparent or translucent polyolefin resin sheet 2 emboss 3 colored polyolefin resin sheet 4 primer layer 5 picture pattern layer 6 adhesive layer 7 wiping ink 8 gloss adjusting layer

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location B29L 9:00

Claims (2)

[Claims] 1. A backing of a transparent or translucent polyolefin-based resin sheet having a desired embossed surface, a primer layer and a pattern layer on a colored polyolefin-based resin sheet serving as a base material during a sheet manufacturing process. , A decorative sheet, in which the printed surface of the sheet, which is sequentially provided, is bonded via an adhesive for dry lamination. 2. The decorative sheet according to claim 1, wherein a gloss adjusting layer is provided after filling the ink into the surface emboss.