JP2005211709A - Wallpaper, surface treatment agent therefor and wallpaper remodeling method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide wallpaper excellent in the coating properties of coating when the wallpaper is remodeled by coating the wallpaper with coating without repapering the contaminated wallpaper. <P>SOLUTION: The wallpaper is obtained by coating the surface of the wallpaper with a surface treatment agent containing 0.5-18 wt.% of shirasu balloons. An anchor coat layer is provided between the surface of the wallpaper and the surface treatment agent. The wallpaper is remodeled by coating the surface treatment agent layer on the wallpaper with aqueous coating or the like. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a wallpaper excellent in coating property of a paint, a surface treatment agent for wallpaper applied to the wallpaper surface in order to satisfactorily apply the paint on the wallpaper surface, and a wallpaper refurbishing method.

Conventionally, when the wallpaper surface becomes dirty, the wallpaper is replaced and completely renovated, or paint is applied on the dirty wallpaper.
In the former method, the existing wallpaper must be peeled off and a new wallpaper must be pasted, which takes time and labor, and the wallpaper must be discarded. In this regard, the latter method is preferable because it requires less labor and no waste as compared with replacement, and in recent years, a method for refurbishing wallpaper by coating with a paint has been carried out.

  However, the method of overcoating the paint has a problem that the coatability of the paint is poor. That is, the surface of the wallpaper is usually provided with an antifouling film layer made of acrylic resin, urethane resin, fluorine resin or antifouling layer mainly composed of polyvinyl alcohol for antifouling processing. Even if an aqueous paint is applied from above, the paint is repelled and it is difficult to apply the paint. When applying a paint to such a wallpaper, it is necessary to reciprocate an applicator such as a brush so as to spread the paint in the same range, which is very complicated and requires a long coating time.

  Accordingly, the present invention provides a wallpaper having excellent paint coatability, a surface treatment agent for wallpaper that makes it easy to apply a paint to a wallpaper, and a wallpaper refurbishment method that can be easily applied to paint and refurbish the wallpaper. The issue is to provide.

The present invention provides a wallpaper obtained by applying a surface treatment agent containing less than 20% by weight of shirasu balloon on the surface. Moreover, this invention provides the surface treating agent for wallpaper which contains Shirasu balloon and a binder, and contains Shirasu balloon less than 20 weight%. The shirasu balloon contained in the surface treatment agent is preferably in a range of 0.5 to 18% by weight.
The wallpaper coated with such a surface treatment agent can be applied satisfactorily without being repelled when the paint is applied from above. Further, the surface of the wallpaper before the coating of the paint exhibits a dirt-like appearance and is excellent in decorativeness. The wallpaper coated with the surface treatment agent of the present invention is excellent in the coating property of the paint, and the principle of having a soil-like appearance is not clear, but by mixing a predetermined amount of shirasu balloon, the treatment agent The shirasu balloon gathers moderately on the surface of the coating layer, resulting in unevenness, and as a result, the paint is easy to wear, and because it refracts and disperses light randomly, it exhibits a soil-like appearance. Conceivable.

The present invention also provides a wallpaper refurbishing method in which a surface treatment agent containing less than 20% by weight of shirasu balloon is applied to the surface of the wallpaper, and a wallpaper paint is applied thereon.
By coating such a surface treatment agent on the wallpaper and applying a paint thereon, the paint can be applied satisfactorily even with a simple applicator such as a brush or a roller. Therefore, the existing wallpaper can be easily refurbished, and even if the wallpaper has an antifouling treatment on the surface, the paint can be easily applied.

Since the wallpaper of the present invention can be satisfactorily applied from above, for example, an individual user can easily apply the paint from above the wallpaper. In addition, since it has a mud-like appearance, it is possible to provide a wallpaper with excellent decorativeness.
Furthermore, the surface treatment agent of the present invention is easy to apply on the surface of the wallpaper, and after the application, it acts as a primer to satisfactorily apply the paint on the wallpaper, thereby improving the coating property of the paint on the wallpaper. Can be improved.
In addition, the wallpaper refurbishing method of the present invention can apply the paint satisfactorily even by using a simple applicator such as a brush or a roller by applying the surface treatment agent to the wallpaper and applying the paint on the surface treatment agent. For example, even an individual user can easily renovate an existing wallpaper.

The present invention will be described below.
As shown in FIG. 1, the wallpaper 1 of the present invention has a treatment layer 5 made of the following surface treatment agent on the surface of a wallpaper body provided with a wallpaper substrate 2 and a design printing layer 3 provided on the surface of the substrate 2. Is provided.
As the wallpaper base material 2, known materials can be used. For example, fabrics such as natural fibers, synthetic fibers, semi-synthetic fibers, and inorganic fibers such as glass fibers or knitted fabrics, kenaf paper, plain paper, recycled paper, Natural pulp paper such as Japanese paper, fine paper, crepe paper, glassine paper, tracing paper, cast paper, coated paper, non-woven fabric, synthetic paper, laminated paper, polyolefins such as polyethylene terephthalate, polyethylene, polypropylene, polyvinyl chloride, olefin A resin sheet made of a synthetic resin such as a thermoplastic elastomer or ABS resin, or a foamed sheet such as a foamed vinyl chloride sheet can be used. As the layer structure of the wallpaper base material 2, in addition to the one-layer structure composed of the above-described materials, a wallpaper base is formed from a laminate of two or more layers of a relatively thick backing material 21 and a cover material 22 bonded thereto. Material 2 may be constituted. Specific examples of such a two-layer structure include, for example, a wallpaper base material 2 in which kenaf paper, fabric or the like is used as the cover material 22 and plain paper or crepe paper is laminated as the backing material 21. In addition, additives such as inorganic fillers, plasticizers, foaming agents, pigments, antioxidants, ultraviolet absorbers, flame retardants, and the like may be appropriately mixed as necessary. Furthermore, the wallpaper base material 2 may be appropriately embossed.
The design printing layer 3 is a layer on which a desired design is applied using, for example, water-based ink, solvent-type ink, and the printing method is provided by a known printing method such as gravure printing, offset printing, or screen printing. be able to. The design printing layer 3 is provided as necessary. For example, when the wallpaper base material 2 is made of a sheet material having a pattern such as a fabric such as a woven fabric or a knitted fabric or a Japanese paper, these design printing layers 3 are provided. In order to make use of the design, the design print layer 3 may not be provided.
In addition, in order to provide functions such as antifouling property, antifungal property, moisture absorption / release property, etc., the wallpaper base material 2 may be subjected to a known treatment such as providing a functional layer.

The surface treatment agent constituting the treatment layer 5 is composed of a solution agent containing at least a shirasu balloon and a binder. Specifically, the shirasu balloon is a substantially spherical white powder mainly composed of aluminosilicate, which is obtained by heating and foaming a volcanic glassy deposit called shirasu at about 1000 ° C. In the present invention, those having an average particle size of about 10 to 2000 μm and a bulk density of about 0.1 to 0.48 g / cm ³ can be used, but from the viewpoints of blendability, coatability, appearance, etc., the average particle size It is preferable to use a material having a bulk density of about 30 to 400 μm and a bulk density of about 0.1 to 0.3 g / cm ³ . The binder is not particularly limited as long as it can fix the shirasu balloon to the surface of the wallpaper body, and examples thereof include acrylic resin, ethylene-vinyl acetate copolymer, urethane resin, vinyl acetate, alkyd resin, and epoxy resin. Either an aqueous emulsion type or a solvent type can be used, but it is preferable to use an aqueous emulsion type because the solvent does not volatilize during coating. The Shirasu balloon is blended in an amount of less than 20% by weight based on the total amount of the surface treatment agent. It is because the coating property of a coating will worsen when it mix | blends more than this. The preferred amount of Shirasu balloon is about 0.5 to 18% by weight, more preferably about 1 to 15% by weight.
In addition, additives such as other inorganic fillers such as aluminum hydroxide and calcium carbonate, stabilizers, pigments, ultraviolet absorbers, and flame retardants may be appropriately blended with the surface treatment agent as necessary.
Further, an anchor coat layer (not shown) may be provided between the treatment layer 5 and the wallpaper substrate 2 (design print layer 3). As the anchor coat layer, for example, ethylene vinyl acetate resin, polyvinyl alcohol, or the like can be used. Such an anchor coat layer is provided by coating a solution-like anchor coat agent or laminating a film composed of the above components. By providing such an anchor coat layer, the surface treatment agent can be applied satisfactorily and without waste. For example, if a surface treatment agent is applied to wallpaper in which the wallpaper base material 2 is made of a highly liquid-absorbing material such as paper or fabric and the wallpaper base material 2 is exposed on the surface, a large amount of the surface treatment agent will permeate. The surface treatment agent can be applied without waste by providing the anchor coat layer.

The surface treatment agent can be obtained by blending an appropriate amount of shirasu balloon and an additive to be added if necessary with an aqueous emulsion such as an acrylic resin and sufficiently stirring and mixing. The wallpaper of this invention can be obtained by apply | coating this surface treating agent to the surface of the wallpaper main body manufactured by the well-known method. The coating method of the surface treatment agent is not particularly limited, and it can be applied by a known coating method such as application with a brush, roller, spray, mop, sponge, waste cloth, gravure coating or the like. The coating amount of the surface treatment agent is preferably about 10 to 200 g / m ² (layer thickness after drying 5 to 100 μm). If the coating is too thin, improvement in the coating property of the paint cannot be expected. On the other hand, if the coating is too thick, the effect does not change and the cost becomes disadvantageous.
The surface treatment agent for wallpaper of the present invention has an appropriate viscosity, and since the shirasu balloon is dispersed for a relatively long time after kneading, it can be easily applied to the wallpaper surface. By coating the surface treatment agent on the wallpaper surface, the coating property of the paint on the wallpaper is improved. Therefore, when the wallpaper of the present invention is applied to a wall or the like and the surface becomes dirty and needs to be refurbished, it can be easily applied with water-based paint using a brush or the like. It can be done easily. In addition, the coated surface after applying the paint becomes a matte shape and does not become excessively bright and can form a coated surface with excellent decorativeness.
Furthermore, even before the paint is applied, the wallpaper of the present invention to which the surface treatment agent has been applied has an earthy wall appearance without being brilliant, and thus has excellent decorativeness.

Next, the wallpaper refurbishing method of the present invention will be described.
The surface treatment agent is applied to an existing wallpaper whose surface is dirty and refurbished by a known application means such as a brush, roller, spray, mop, sponge, or waste cloth. Amount of coating is, 10 to 400 g / m ² (thickness 5~200μm after drying) of about further 10 to 200 g / m ² degree (thickness 5~100μm after drying) is preferred. The wallpaper to be refurbished is not particularly limited. For example, it can be applied to various types of wallpaper such as those with a wallpaper base exposed on the surface and those with a surface treated with an antifouling material such as a fluororesin. it can. If the wallpaper to be refurbished is very dirty, it is preferable to wipe it off before applying the surface treatment agent. Moreover, you may apply | coat the said anchor coat agent as needed.
And after drying a surface treating agent, the coating material for remodeling is applied from this. The paint may be either a water-based paint or a solvent-type paint, but it is preferable to use a water-based paint because the solvent does not volatilize. Water-based paints include acrylic resin emulsions, vinyl chloride-vinyl acetate copolymer emulsions, vinyl chloride-acrylic acid ester copolymer emulsions, ethylene-vinyl acetate copolymer emulsions, acrylic acid ester copolymer emulsions, pigments, and surfactants. A blended agent, dispersant, thickener, film-forming aid and other additives can be used.

  The above refurbishment method can improve the coatability of a water-based paint or the like by applying a surface treatment agent on the existing wallpaper. Further, since the surface treatment agent has an appropriate viscosity and the shirasu balloons are dispersed for a relatively long time, it is not necessary to knead over and over again when coating the wallpaper.

Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples. However, the present invention is not limited to the following examples.
Examples 1-6
Acrylic resin, shirasu balloon (average particle size 75 μm, bulk density 0.17 to 0.21 g / cm ³ (trade name: Silax PB-03, manufactured by Shirazuku Co., Ltd.), water, and water as appropriate at the blending ratios shown in Table 1. The surface treating agent which concerns on Examples 1-6 was obtained by mix | blending and fully knead | mixing.
Comparative Examples 1-4
In the blending ratio shown in Table 2, the same acrylic resin and shirasu balloon, calcium carbonate, and water as those used in the examples are appropriately blended and sufficiently kneaded to obtain the surface treatment agent according to Comparative Examples 1 to 4. It was.

Each test example Using the surface treating agents obtained in Examples 1 to 6 and Comparative Examples 1 to 4, the following various tests were performed. The test results are also shown in Tables 1 and 2.
(Viscosity of surface treatment agent)
The viscosity of the surface treating agent in each example was measured with a viscometer (manufactured by Rion, Viscolanostar VP04).
(Compoundability of surface treatment agent)
After leaving the surface treating agent of each example for 20 minutes, the degree of sedimentation of shirasu balloon or calcium carbonate was visually confirmed.
(Coating properties of surface treatment agent)
The surface treatment agent of each example was thoroughly kneaded again, and wallpaper (design printing was performed on the surface of kenaf paper with a thickness of 0.15 mm using water-based ink, followed by water-repellent treatment (product) Name: Paintable, manufactured by Toli Co., Ltd.)), and the quality of the coating property was evaluated.
(Appearance of wallpaper after surface treatment agent coating)
After applying the surface treatment agent for each example, the surface treatment agent was left for 10 minutes, and the appearance of the wallpaper surface was visually evaluated. In the table, “○” indicates that there is a moderate matte feeling and it looks like an earthen wall appearance, and “○” indicates that the matte feeling is low and it is not seen as earthen wall tone. In the case of “△”, a case where it is evaluated that almost no matte feeling is seen is indicated by “×”.
(Coating properties of water-based paint by brush)
For the wallpaper after applying and drying the surface treatment agent of each example, apply water-based paint (trade name: paint for paper paper, manufactured by Asahi Pen Co., Ltd.) using a brush over the surface treatment agent. Then, the degree of playing and sagging of the aqueous paint was evaluated. Further, as Comparative Example 5, a normal wallpaper (not coated with a surface treatment agent) (the surface of kenaf paper having a thickness of 0.15 mm was subjected to acrylic resin treatment and wax treatment as a water repellent treatment ( (Product name: Kenaf Wall, manufactured by Toli Co., Ltd.)) and water-based paint was brushed on and evaluated.
However, in Comparative Example 1, since the water-based paint hardly applied to the wallpaper surface, the applicability of the paint could not be evaluated (the same applies to the following evaluations).
In the table, “Good” indicates that the paint can be applied almost uniformly by coating once, “Normal” indicates that the paint can be applied approximately uniformly by repainting multiple times, and multiple times. The case where the coating cannot be performed substantially uniformly even after repainting is indicated as “bad”.
(Coating performance of water-based paint by roller)
About Examples 1-6 and Comparative Examples 1-5, the brushing condition and sagging condition of water-based paint were evaluated similarly to brush coating using a roller brush.
(Dry state of aqueous paint)
After applying water-based paint by brush painting, it was left for 30 minutes, the surface of the paint was touched with a finger, and the dry state of the paint was confirmed by the degree of paint adhesion.
(Finish finish and paint appearance)
After applying the aqueous paint, it was allowed to stand for 2 hours, and color unevenness and the like were visually evaluated. Furthermore, the appearance of the paint surface (coating surface) was visually evaluated.

  From the above results, it can be seen that the surface treatment agents of Examples 1 to 6 are easily applied to wallpaper. Moreover, the wallpaper after coating has a mud-like appearance, and the decorativeness of the wallpaper can be enhanced. Further, it can be seen that if the paint is applied after the surface treatment agents of Examples 1 to 6 are applied, the paint is not repelled and can be applied satisfactorily.

The partially omitted side view showing the wallpaper of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Wallpaper of this invention, 2 ... Wallpaper base material, 21 ... Backing material, 22 ... Surface covering material, 3 ... Design printing layer, 5 ... Processing layer

Claims (4)

  Wallpaper obtained by applying a surface treatment agent containing less than 20% by weight of shirasu balloon on the surface.   The wallpaper according to claim 1, wherein the shirasu balloon contained in the surface treatment agent is 0.5 to 18% by weight.   A surface treatment agent for wallpaper comprising a shirasu balloon and a binder, wherein the shirasu balloon is contained in an amount of less than 20% by weight. A method for refurbishing a wallpaper, which comprises applying a surface treatment agent containing less than 20% by weight of shirasu balloon to the surface of the wallpaper, and applying a paint for the wallpaper on the surface.

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