JPH08156159A - Decorative sheet and manufacture of the same - Google Patents

Abstract

PURPOSE: To provide a decorative sheet which has an equivalent texture to that of painting finish in the field, is furnished with safety for an operator and freedom for design, and can be produced industrially. CONSTITUTION: There are provided a cloth which is made from a fabric of glass fibers, a paint which is applied on the fabric and contains an inorganic pigment as a main component, and a skin which is a copolymer of methyl methacrylate and 2-ethylhexyl acrylate which is applied on the surface of the paint.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glass fiber-based decorative sheet. INDUSTRIAL APPLICABILITY The decorative sheet of the present invention is excellent in flame retardancy, safety, flexibility, and pollution resistance, and can be suitably used as a wall covering material, a ceiling surface interior material, a furniture covering material, and the like.

[0002]

2. Description of the Related Art Inorganic wall coverings made of glass fiber woven cloth and coated with an inorganic paint are known to have higher fire protection performance than organic wall coverings such as paper wallpaper and vinyl wallpaper. ing. Conventionally, when sticking this kind of inorganic wall covering material to a wall surface, at the construction work site, first, a woven cloth made of glass fibers is stuck to the wall, and then the surface of the woven cloth is water-based containing an extender pigment having a large particle size. It was applied by undercoating an inorganic paint, leaving it to stand for 15 hours or more to dry, and then applying the topcoat once or twice with paint. Since it is a construction on site in this way, it is the responsibility of the certified contractor to
It was constructed in accordance with the standards set by the Walling Materials Association.

[0003]

When constructing wall coverings on site as described above, the contractor is limited to a certified contractor, so it is necessary to match the schedule of the certified contractor. The construction period cannot be shortened because it is necessary to wait 15 to 20 hours. Further, since the glass fibers are in a bare state until the paint is primed, short glass fibers may scatter and injure the skin and throat of the worker. Furthermore, because of on-site construction, the range of designs that can be embodied on the surface of the wall covering is limited.

Therefore, an object of the present invention is to provide a factory-producible decorative sheet which has a texture equivalent to that of a paint finish during on-site construction and which is safe for workers and has a good design.

[0005]

In order to achieve the above object, the decorative sheet of the present invention comprises a woven cloth made of glass fibers, a paint which is applied to the woven cloth and has an inorganic pigment as a main component, and the paint. And a film made of a transparent water-based resin applied to the surface.

A suitable method of making the above decorative sheet is:
It is characterized in that the following steps (a), (b) and (c) are sequentially performed. (A) A step of backing a woven fabric made of glass fibers with flame-retardant paper. (B) A step of applying a water-based inorganic coating material on the surface of the woven cloth backed and drying it. (C) A step of applying a transparent water-based emulsion resin on the surface of the dried inorganic coating material and drying it.

Here, examples of the inorganic pigment include aluminum hydroxide, calcium carbonate, silica, kaolin, barium sulfate, silicate, titanium oxide and the like. The water-based inorganic coating material in the step b is, for example, one of vinyl acetate acryl copolymer resin, styrene acryl copolymer resin, ethylene vinyl acetate resin and acrylic ester copolymer resin for imparting adhesiveness to these inorganic pigments. It is prepared by adding at least one type of water-based emulsion resin, halogen-based flame retardant, dispersant, and thickener together with water. It is preferable that the water-based inorganic coating material is adjusted to fall within the range of 25 to 50% by weight of inorganic non-volatile content and 5 to 10% by weight of organic non-volatile content. For example, as a mixing ratio thereof, a dispersant (anionic activator) 2 ~ 3 parts, water 40 to 45 parts, titanium oxide 8 to 10 parts, calcium carbonate 5 to 7 parts, aluminum hydroxide 5 to 8 parts, silica 5 to 7 parts, vinyl acetate acrylic copolymer resin (45% NV) 20 .About.25 parts and 5 parts of halogen-based flameproofing agent. When coloring, a colored water-based pigment may be added thereto.

The conditions for applying the water-based emulsion resin in step c are film-forming temperature (temperature for forming a film) 15 ° C. to 3
0 ° C, emulsion particle size 0.1μ or less, viscosity 2500
cps to 3500 cps is preferable.

[0009]

In the factory, the woven cloth made of glass fiber is coated with the inorganic pigment, and the transparent water-based resin is formed on the woven cloth, so that it can be completed as a wall covering material equivalent to on-site construction in the factory. Therefore, it can be shipped from the factory as a fire wall material, and after shipping, it can be installed on the site wall by a person other than the responsible construction authorized contractor. There is no need to dry the paint after construction. Therefore, the construction period can be shortened.

In the manufacturing process, the glass fibers are hidden by the pigment, and the pigment particles are bound by the aqueous resin.
Therefore, there is no risk that glass fibers will scatter during construction on site.

When the above acrylic ester copolymer resin or the like is used as the transparent water-based resin, the product has excellent flexibility and gloss. Because of its flexibility, it can be rolled and shipped. When the acrylic acid ester copolymer resin is a copolymer resin of methyl methacrylate and 2-ethylhexyl acrylate, it is excellent in water resistance and alkali resistance, so that it becomes a product that is hard to stain and is easy to wipe off the stain.

When a pattern is to be embodied, a water-based inorganic paint may be printed on the pattern. In this case, the paint is partially applied to the woven cloth, but the water-based emulsion resin in the step (c) is preferably applied to the entire surface of the woven cloth to prevent the glass fibers from scattering.

[0013]

【Example】

—Example— 3 parts by weight of a dispersant (anionic activator) and 40 parts of water by weight
Parts, titanium oxide (particle size 0.5 μ to 3 μ) 10 parts, calcium carbonate 7 parts, aluminum hydroxide 8 parts, silica (white carbon) 7 parts, vinyl acetate acrylic copolymer resin (45% NV) 20 parts and halogen A water-based inorganic coating material was prepared by mixing 5 parts of a flame retardant and adjusting the viscosity to 5000 cps and pH = 9.

Separately, a woven fabric made of glass fibers having a weight of 170 g / m ² was lined with a flame-retardant paper having a weight of 70 g / m ² (step a).

The above water-based inorganic coating material was applied to the surface of the woven fabric backed by a gravure roll and dried at 135 ° C. for 1 minute (step b). After that, 2 with methyl methacrylate
-Drying a mixed solution (emulsion particle size of 0.1 µ or less) composed of 93 parts of an aqueous emulsion aqueous solution containing 38% by weight of a copolymer resin with ethylhexyl acrylate and 7 parts of a halogen-based flameproofing agent, and having a viscosity adjusted to 900 cps. A transparent film was formed on the surface of the inorganic pigment by coating the surface of the paint with a gravure roll and drying again at 135 ° C. for 1 minute (step c) to complete the decorative sheet.

The obtained decorative sheet not only complies with the walling material association certification number Walling Material No. 0005 but also weighs 3
It was as light as 50 g / m ^2, and the glass fiber was completely covered with the inorganic pigment, although the uneven pattern due to the creases of the glass fiber remained. Moreover, no cracking occurred even when bent.

A water-based ink (Blue Black manufactured by Pilot) diluted 5 times with water was poured on the surface of this decorative sheet, and after leaving it for 2 minutes and washing with water, almost no ink marks were left. In addition, after drawing with a water-based magic pen, it was wiped clean with a wet cloth.

-Comparative Example-This example is different from the above-mentioned examples in that the composition of the inorganic coating material in the step b contains a large amount of inorganic pigment for the amount of water, and the step c is omitted.

That is, on a weight basis, 1.42 parts of a dispersant (anionic activator), 4.25 parts of water, 5.
19 parts, 28.34 parts of aluminum hydroxide, 28.34 parts of zinc borate, 28 parts of ethylene vinyl acetate copolymer resin and 3.4 parts of halogen-based flame retardant are mixed to obtain a viscosity of 10,000.
The water-based inorganic coating material was adjusted to 0 cps and pH = 9.

Separately, a woven fabric made of glass fibers having a weight of 170 g / m ² was lined with a flame-retardant paper having a weight of 70 g / m ² (step a). The above water-based inorganic coating material was applied to the surface of the woven fabric backed by a gravure roll and dried at 135 ° C. for 1 minute (step b) to complete a decorative sheet for comparison.

The obtained decorative sheet weighs 645 g / m.
^Although it was as heavy as ² and the uneven pattern due to the creases of the glass fiber disappeared, the coating thickness of the inorganic pigment was non-uniform and had a patchy pattern. Also, when bent, the paint cracked.

A water-based ink (Blue Black manufactured by Pilot) diluted 5 times with water was poured on the surface of this decorative sheet, and after leaving it for 2 minutes and washing with water, ink marks remained. Also, after drawing with an aqueous black magic pen and wiping with a wet cloth, the black line did not disappear.

[0023]

INDUSTRIAL APPLICABILITY As described above, the decorative sheet of the present invention is more suitable for shortening the construction period than the responsible construction wallpaper on site and is safe for the operator. Further, it has a long life because it has excellent stain resistance and bending bending resistance. Further, since it is lightweight, it can be applied not only to wall coverings, but also to interior decoration of buildings such as decoration of ceiling surfaces.

Claims (8)

[Claims] 1. A woven cloth made of glass fiber, a paint mainly applied to the woven cloth, which is mainly composed of an inorganic pigment, and a film made of a transparent water-based resin applied to the surface of the paint. And decorative sheet. 2. The transparent water-based resin is an acrylic acid ester copolymer resin or a methacrylic acid ester copolymer resin, or a mixture thereof with at least one of a urethane resin, a silicone resin and a fluororesin. The decorative sheet described in. 3. The decorative sheet according to claim 2, wherein the acrylic acid ester copolymer resin is a copolymer resin of methyl methacrylate and 2-ethylhexyl acrylate. 4. A method of manufacturing a decorative sheet, which comprises sequentially performing the following steps (a), (b) and (c). (A) A step of backing a woven fabric made of glass fibers with flame-retardant paper. (B) A step of applying a water-based inorganic coating material on the surface of the woven cloth backed and drying it. (C) A step of applying a transparent water-based emulsion resin on the surface of the dried inorganic coating material and drying it. 5. The method for producing a decorative sheet according to claim 4, wherein the content of the inorganic non-volatile component in the water-based inorganic coating material is 50% or less. 6. The water-based inorganic coating material contains at least one emulsion resin selected from vinyl acetate acrylic copolymer resin, styrene acrylic copolymer resin, ethylene vinyl acetate copolymer resin and acrylic ester copolymer resin.
A method for producing a decorative sheet according to. 7. The aqueous emulsion resin of step (c) comprises:
The method for producing a decorative sheet according to claim 4, which is an acrylic acid ester copolymer resin or a methacrylic acid ester copolymer resin, or a mixture thereof with one or more kinds of a urethane resin, a silicone resin and a fluororesin. 8. The method for producing a decorative sheet according to claim 7, wherein the acrylic acid ester copolymer resin is a copolymer resin of methyl methacrylate and 2-ethylhexyl acrylate.