JP3057145U - Decorative sheet - Google Patents

Abstract

(57) [Summary] (with correction) [PROBLEMS] To provide a soft-feeling decorative sheet that can be manufactured at low cost by gravure printing. The decorative sheet is made of a heat-resistant base material (10).
A coating layer 14 provided with or without a solid printing 12 on the surface of the pattern, and a pattern printing layer 16 in which a ground pattern or a pattern of a gravure plate is printed on the coating layer 14 with a high solid-type ink.
And a pressure-sensitive adhesive layer 18 provided on the back surface of the base material.
And a protective sheet 20 on the pressure-sensitive adhesive layer.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 The present invention relates to a decorative sheet used as a surface material for exteriors of buildings, interiors of buildings, vehicles, etc., housing equipment, home electric appliances, etc., and in particular, has heat resistance against heating during manufacturing. The present invention relates to a soft-feeling decorative sheet having a matte, ground or patterned texture such as velvet or suede on a substrate.

[0002]

[Prior art]

 Some matte decorative sheets use a matte paint mixed with elastic spherical resin beads as disclosed in JP-A-2-24138. This decorative sheet is made by applying resin beads as ink or paint at the time of manufacture and applying it to a vinyl chloride film or paper with a roll coater, spray coater, knife coater or the like. The coating material cannot be used for printing by a normal printing method because the particle size of the beads, that is, the particle size of the pigment is as large as 20 to 70 μm, so that the decorative sheet as a product is very expensive. This is because not only is the ink or paint based on resin beads as a pigment base expensive, but also the process of applying such an ink or paint onto a substrate such as a vinyl chloride film or paper using a roll coater or the like is an efficient operation. Due to lack of productivity.

[0003]

[Problems to be solved by the invention]

 Accordingly, an object of the present invention is to provide a soft-feel decorative sheet that can be manufactured at low cost by a normal printing method, particularly gravure printing, without using expensive resin bead-based pigments. .

[0004]

[Means for Solving the Problems]

 The object of the present invention is to provide a coating layer provided with or without solid printing on the surface of a heat-resistant base material, and a ground pattern or a pattern of a gravure plate on the coating layer with a high solid separation. This can be achieved by a decorative sheet having a pattern printing layer printed with ink, or a decorative sheet having an adhesive layer provided on the back surface of the base and a protective sheet on the adhesive layer.

[0005]

[Effect of the invention]

 The decorative sheet according to the present invention has a matte, velvet or suede-like ground pattern or pattern pattern, has a soft-feeling appearance, and has a heat-resistant base material. It has excellent dimensional stability against heating in the process of bonding to the material to be coated, and high dimensional accuracy can be obtained.

[0006]

Embodiment

 Referring to FIG. 1 showing an example in which the pattern printing layer is formed by printing a ground pattern, and FIG. 2 showing an example in which the pattern printing layer is formed by printing a pattern pattern, the manufacturing of the decorative sheet according to the present invention will be described. First, an ink layer 12 is formed on the surface of the substrate 10 by solid printing.

As the base material 10, a polyester film, a thermoplastic saturated polyester film, a polyacrylonitrile film, a polyimide film, a polyester imide film, a polyetheretherketone film, a polysulfone film, a polycarbonate film, a polyether film Sulfone film, polyphenylene sulfide film, fluorine film, thermoplastic polyurethane film, nylon film, acrylic film, polyvinyl alcohol film, polyethylene film, polypropylene film, biodegradable film, synthetic paper, metal foil film In addition to nonwoven fabrics, paper such as thin paper for building materials and emulsion impregnated paper, or vinyl chloride film can be used. Depending on the operating temperature, other heat-resistant base materials other than paper may be used in consideration of the heat curing of the ink used for pattern printing described later and the hot bonding of the obtained decorative sheet to the material to be coated. It is preferable to use a base material other than a vinyl chloride film in consideration of incineration at a later date.

Next, a coat layer 14 is provided on the ink layer 12 by applying a two-part urethane resin in a matte or super-matte state. The coat layer 14 can be provided directly on the substrate 10 without providing the ink layer 12 on the substrate.

Then, on the coat layer 14, using a gravure plate described later, the pear-skinned or sand-grained ground pattern (FIG. 1) or an abstract pattern such as a flower pattern, a wood pattern, or a concrete pattern. A pattern such as a pattern (FIG. 2) is printed with a high solid type ink to form a pattern print layer 16. As this high solid type ink, an ink using a two-component urethane, unsaturated polyester, vinyl chloride or acrylic emulsion as a vehicle and having a volatile residue of 50 to 100% is used.

The decorative sheet on which the pattern print layer 16 is formed is heated in an atmosphere at 150 to 250 ° C., and the curing of the high solid ink is promoted.

In the gravure printing plate, the maximum length of the concave portion forming the ground pattern is set to 200 μm or less on the gravure cylinder for manufacturing a velvet-like decorative sheet. The ratio to the area is 30 to 55% on the gravure cylinder, and the depth of the recess is 40 to 60 μ.

In the gravure printing plate, the maximum length of a concave portion forming a ground pattern is 400 μm or less on a gravure cylinder for manufacturing a suede-like decorative sheet, and a flat portion having a total area of the concave portion is provided. The ratio to the total area is 40-70% on the gravure cylinder, and the depth of the recess is 55-90 μ.

On the other hand, in printing a pattern using a gravure plate, the depth of the concave portion forming the pattern is set to 75 to 200 μm.

By setting the ratio of the total area of the concave portion to the total area of the flat portion and the depth of the concave portion on the gravure cylinder of the gravure plate in the above-described ranges, the matte velvet or suede ground pattern can be obtained. Or, a so-called soft-feeling decorative sheet can be obtained by the pattern obtained by the matte or super-matte coat layer and the concave portions having a depth of 75 to 200 μm.

After forming a pattern printing layer 16 for bonding with a material to be decorated (not shown), a pressure-sensitive adhesive is applied to the back surface of the substrate 10 by a roll coater to form a pressure-sensitive adhesive layer 18. Form. Thereafter, a peelable protective sheet is arranged on the pressure-sensitive adhesive layer 18. The material of the pressure-sensitive adhesive layer 18 is appropriately selected according to the material to be decorated such as a metal plate, a plastic plate, and a wood-based plate to which the decorative sheet is to be attached. After peeling off the protective sheet, the decorative sheet is firmly adhered to a material to be decorative such as a metal plate under heat and pressure.

[Brief description of the drawings]

FIG. 1 is a partially enlarged cross-sectional view of a decorative sheet according to the present invention having a ground pattern printing layer.

FIG. 2 is a partially enlarged cross-sectional view of the decorative sheet according to the present invention having a printed pattern pattern.

[Explanation of symbols]

 Reference Signs List 10 base material 12 solid printing layer 14 coat layer 16 pattern printing layer 18 pressure-sensitive adhesive layer 20 protective sheet

Claims (6)

[Utility model registration claims] 1. A coat layer provided with or without solid printing on the surface of a heat-resistant base material, and a ground pattern or a pattern pattern of a gravure plate is printed on the coat layer with a high solid type ink. Decorative sheet having a patterned print layer. 2. A coating layer provided with or without solid printing on the surface of a heat-resistant base material, and a ground pattern or a pattern of a gravure plate is printed on the coating layer with a high solid type ink. Pattern printed layer, the adhesive layer provided on the back of the substrate,
A decorative sheet having a protective sheet on the pressure-sensitive adhesive layer. 3. The base material is a polyester film,
Thermoplastic saturated polyester film, polyacrylonitrile film, polyimide film, polyesterimide film, polyetheretherketone film, polysulfone film, polycarbonate film, polyethersulfone film, polyphenylenesulfide film, fluorine film, heat 3. A plastic polyurethane film, a nylon film, an acrylic film, a polyvinyl alcohol film, a polyethylene film, a polypropylene film, a biodegradable film, a synthetic paper, a metal foil film, a nonwoven fabric, a paper, or a vinyl chloride film. The decorative sheet according to the above. 4. The decorative sheet according to claim 1, wherein the ground pattern is a satin pattern or a grain pattern, and the pattern is a concrete pattern or an abstract pattern. 5. The high solid type ink comprises two-component urethane,
Volatile residue is 50 to 100% using unsaturated polyester, salt visol or acrylic emulsion as vehicle
The decorative sheet according to claim 1, which is an ink. 6. The decorative sheet according to claim 1, wherein the coat layer is formed by applying a two-part urethane resin in a matte or super-matte state.