JPH01139252A - Easy adhesion type decorative sheet for wall - Google Patents

Abstract

PURPOSE:To impart a beautiful surface decorative property and excellent water resistance mildewproofness to a wall surface by simply adhering and pressing the title sheet, by providing a tacky waterproof rubber sheet layer, a sheet- shaped base layer, a waterproof coating material layer and a topcoat film layer, in that order from the tacky surface side, in a laminate form. CONSTITUTION:A waterproof coating material layer 2 and a topcoat film layer 3 are provided on the upper side of a sheet-shaped base layer 1 in a laminate form, whereby a beautiful surface decorative property is imparted, and penetration of moisture or mildew from the outer side is prevented. A tacky waterproof rubber sheet layer 4 provided beneath the sheet-shaped base layer 1 has a high tack and an excellent waterproofness, so that this decorative sheet can be firmly adhered to an objective substrate surface by a simple method of pressing the sheet against the substrate surface, and penetration of moisture or mildew from the substrate surface side is prevented. This system includes an adhering technique in which a tacky waterproof rubber sheet is first adhered to an objective substrate surface, and then the waterproof decorative sheet-from molded object is adhered to the rubber sheet.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention can be attached to the construction substrate by simply peeling off the release paper on the back side and press-fitting it to the construction substrate. This invention relates to an easy-to-stick decorative wall covering sheet that exhibits excellent waterproof and mildew-proof properties that prevent the infiltration of moisture and mold. In particular, it is used for wall coverings in bathrooms, which have many problems in terms of mold prevention, and for external wall surfaces made of ALC boards (lightweight foamed concrete boards), etc., which have high moisture permeability and poor waterproofness, and are prone to mold growth on external wall surfaces. The present invention provides an easy-to-stick decorative sheet for wall coverings that is particularly useful for exterior materials such as fences, and furthermore for indoor interior materials for the purpose of preventing moisture and water permeation from indoor wall surfaces.

<Prior art and its problems> In the past, since water resistance and weather resistance were strictly required for exterior construction, a construction method with poor workability was usually used, in which waterproof paint was applied to the base of the exterior wall. Rather than imparting water resistance and weather resistance through this coating, these properties are imparted by attaching a sheet-like material to the exterior wall surface.

A decorative sheet for exterior use that can provide an elegant decorative finish on the surface of an exterior wall has not yet been put to practical use, and even more so, there is no decorative sheet for exterior use that can be applied only by pressing.

Regarding interior construction, in addition to painting and finishing at the construction site, interior wallpaper is mainly pasted on the base surface of the interior walls. This interior wallpaper is typified by PVC wallpaper, and its surface is water resistant and dirt can be wiped off with water, but the backing paper is paper and is essentially water resistant. I can't say anything about this interior material, especially for bathrooms.
Because mold tends to grow in hot and humid conditions, there is a need for something with excellent water resistance and mildew resistance, but since there is no suitable material, it becomes necessary to reapply it within a short period of time. The problem was that it was uneconomical. In the case of this bathroom wall material, the problem in particular is not the infiltration of water or mold from the outside of the wall surface, but rather the infiltration of water and mold from the subsurface side, and measures to prevent this have been an issue. .

<Means for Solving the Problems> Therefore, in the present invention, in order to solve the problems of the above-mentioned conventional technology, ■Water resistance and mildew resistance are imparted by adhesive construction, which is more workable than coating. In particular, it not only prevents water from mixing and mold and bacteria from entering from the outside of the wall, but also prevents them from entering from the underlying surface. ■As a result of intensive research aimed at achieving the most efficient processing through industrial production and supply at low cost, we have developed the simple adhesive decorative wall covering sheet of the present invention.

The present invention includes, in order from the adhesive side, an adhesive waterproof rubber sheet layer (4), a sheet-like base layer (1), a waterproof paint layer (2),
This is an easy-to-stick decorative sheet for wall covering, characterized in that a top coat film layer (3) is laminated.

Sheet-like substrate! (1) is a fibrous sheet-like material made of inorganic fibers such as ceramic fibers and glass fibers, organic fibers such as polyester fibers, acrylic fibers, vinylon fibers, polyvinyl chloride fibers, and acetate fibers; , obtained in the form of woven or non-woven fabric, waterproof paint layer (2)
A fibrous type that is moderately impregnated with the paint of the waterproof paint layer (2) and, conversely, a type that does not impregnate the paint of the waterproof paint layer (2) into the sheet-like base layer (1) are preferably used.

The latter type of sheet-like base layer that is not impregnated with waterproof paint (
1) is a sheet-like reinforcing material as shown below.

(2) Plastic films or sheets made of polyester resin, polyvinyl chloride resin, etc., films treated with surface primers, etc. Polyester resin films are particularly preferably used in terms of sheet strength, low sheet elongation, and heat resistance.

In the case of this polyester film, it is more preferable to use a surface primer treatment.

■A sheet-like material in which one side of the above-mentioned fibrous type is coated with a resin liquid or resin paint to suppress impregnation of the waterproof paint.

■A sheet-like product made by laminating a resin film or metal foil on one side of the above fibrous type.

■A sheet-like product obtained by impregnating the above-mentioned fibrous type with resins and paints using a resin liquid dipping method or the like to suppress impregnation with paint liquids.

The waterproof paint layer (2) is a paint layer having waterproof properties, and is usually coated to a thickness of about 0.2 to 1.0. Water-based acrylic resin paint is suitably used for this waterproof paint layer (2). For example, acrylic resin-based water-based latex in a broad sense such as 100% acrylic copolymer latex, acrylic-styrene copolymer latex, etc. It is a paint that uses resin. As described above, among butaryl resin-based paints, highly elongated type (elastic type) waterproof paints are particularly suitable. Waterproof paints contain inorganic powders such as titanium oxide and calcium carbonate, thickeners, dispersants, etc., and usually have a viscosity of 2000 to 1.
It is obtained by adjusting to the range of 0000 cps (centipoise).

The method for forming the waterproof paint layer (2) includes a roll coater,
Coating methods using spray, flow coater, doctor knife, etc. are preferably used. This formation method includes a one-stage coating method and a two-stage coating method, but because the thickness of this waterproof paint layer (2) is relatively large and the makeup on one surface only needs to be applied, , which is usually formed by a two-stage coating method.

In the two-stage coating method, waterproof paint is first applied to the sheet-like substrate 71! t
First coat (undercoat) on the surface of (1)
Then, after preliminary drying of the undercoat, a second decorative coat is applied to the surface.

The same paint may be used for both the first and second layers, but the paint for the second layer should be different from the first layer in order to correspond to the uneven pattern of the makeup applied to the surface. In many cases, a different paint is used for the undercoat.

1. The surface cosmetic properties of the simple adhesive decorative sheet for wall covering of the present invention are also provided by the top coat coating layer (3) described later, but mainly on the surface of this waterproof coating layer (2). This is done by applying smooth colored tile-like makeup, three-dimensional uneven makeup, multi-colored makeup, printing makeup, etc. Specific examples of uneven makeup include enamel-like patterns, yuzu skin patterns, and beaded patterns.

There are crater patterns, stucco patterns, etc. especially.

Ball-shaped patterns and enamel-like patterns are suitable. Specific examples of multi-colored makeup include patterns using multi-colored paints such as Silakote, while printed makeup includes brick-like patterns, striped patterns, colored joint patterns, and the like.

When the sheet-like substrate yIJ (1) is fibrous, the waterproof paint of the waterproof paint layer (2) is applied to the fibrous sheet-like base layer (1).
) to form a waterproof paint-impregnated portion, so that the sheet-like base layer (1) and the waterproof paint layer (2) partially overlap.

The top coat film layer (3) is a paint used for the outer surface layer of the paint, and generally a paint with a higher resin content than other paints is used, and has excellent water resistance and weather resistance. It serves as a protective film for the lower layer, and the sheet itself is colored using color enamel paint or metallic paint. Formation of this layer is usually carried out by spraying. This layer is coated with at least one of acrylic resin-based, acrylic urethane resin-based, curable fluororesin-based, or acrylic silicone resin-based top coat paints because of their particularly excellent water resistance and weather resistance.
Paints made of various types of paints are preferably used. All or part of this top coat coating layer (3) contains metal powder or mica-based powder to form a metallic or pearlescent coating layer. Metal powders include aluminum powder, stainless steel powder,
Examples of the mica-based powder include gold powder, etc., and mica powder coated with titanium oxide fine powder on a fine mica surface. Also, by using one colored enamel paint, you can create a top coat! It is also possible to color the decorative sheet itself simultaneously with the formation of (3).

Furthermore, if the surface of the waterproof paint layer (2) has a multicolored pattern or a printed pattern, a transparent rear paint is applied thereon, and this clear paint layer becomes the top coat film referred to in the present invention. In addition to this, a clear paint layer is formed on a colored enamel paint layer using the above-mentioned colored enamel paint, a metallic tone, and a burl tone coating layer to form a composite top coat coating Nj (Layer (3)). 3) can also be used.

The coating amount of top coat film 1 (3) is indicated by VA type,
It is preferably between 30 and 150 g/rrr, more preferably between 50 and 120 g/rrr.

The material used for the adhesive waterproof rubber sheet layer (4) contains adhesive non-vulcanized rubber as a main component. , polybutadiene rubber, styrene-butadiene rubber, etc.), but butyl rubber is most preferably used. Moreover, a rubber asphalt compound obtained from a blend of rubber and asphalt can also be suitably used.

Since this adhesive waterproof rubber sheet has strong adhesiveness, it is necessary to have release paper attached to at least one side. Also, normally this rubber sheet product has a thickness of 0.
．． The amount is about 3 to 2.0++a, but the amount optimally used in the present invention is about 0.5 to 1.2 parts. Since this is relatively soft and has low strength, a reinforcing net (5) with low extensibility is usually used for reinforcement on the upper side, the lower side, the middle part, or both upper and lower sides. Open cheesecloth is preferably used so as not to impede the surface tackiness of the rubber sheet.

The adhesive waterproof rubber sheet used in the present invention is as follows.

It has excellent adhesive properties, so it can be firmly attached to ordinary materials without the use of primers or adhesives. For materials that are difficult to adhere to, such as polyester film, we used primers such as epoxy fir resin (solvent type), chloroprene rubber (solvent type), and styrene-butadiene rubber latex (water-based). is preferable.

Effects> Since the simple adhesive decorative wall covering sheet of the present invention has such a structure, it has the following effects. That is,
A waterproof paint layer (2) laminated on the top surface of the sheet-like base layer (1).
) and top coat coating layer (3) provide an elegant surface appearance and prevent moisture and mold seedlings from entering from the outside. The adhesive waterproof rubber sheet layer (4) below the sheet-like base layer (1) has strong adhesive strength and is highly waterproof, so it only needs to be crimped onto the construction base. The decorative sheet of the present invention can be firmly attached to the underlying surface by a simple method.

This prevents moisture and mold from entering from the subsurface.

With conventional technology, it was particularly difficult to prevent moisture and mold from entering from the underlying surface, but by relying on adhesive waterproof rubber sheets for adhesion, we were able to completely prevent this. This makes wall covering work much easier.

In addition, in the present invention, which exhibits such an effect, as described above, the adhesive waterproof rubber sheet layer (4) is formed in advance by the sheet-like base layer (1), the waterproof paint layer (2), and the top coat coating layer (3). )
Rather than being integrally laminated with a waterproof decorative sheet-like molded product consisting of It goes without saying that this also includes adhesive construction techniques in which sheet-shaped molded products are pasted and constructed.

<Example> The easy-to-stick decorative wall covering sheet of the present invention will be described in more detail below with reference to the drawings.

FIG. 1 is a longitudinal cross-sectional view showing a cross-sectional structure of an example of the decorative sheet of the present invention, and FIG. 2 is a vertical cross-sectional view showing a cross-sectional structure of an example of the same.

As mentioned above, the decorative sheet of the present invention, from the adhesive side,
Adhesive waterproof rubber sheet layer (4), sheet-like base layer (1)
, a waterproof paint layer (2) and a top coat film layer (3) are sequentially laminated,
An example implementation of this will be described below.

Example-1 Fibrous sheet-like substrate (1), basis weight 50e:/r
A nonwoven fabric (a paper-like sheet produced by a wet papermaking method) of mixed fibers having a ratio of glass wool/acrylic short fibers = 40/60 (weight ratio) and having a thickness of 0.08 m was used. Using a roll coater, apply an acrylic resin-based elastic waterproofing paint with the following blending ratio to one side of the nonwoven fabric, partially impregnating the inside of the nonwoven fabric, and pre-drying it in a dryer at 150°C for about 1 minute. An undercoat paint layer was formed to become a part of the waterproof paint layer (2).

Elastic type acrylic resin emulsion polyacrylic acid ester copolymer, solid content approx. 50%
100 parts titanium oxide 2
00 parts Calsulam carbonate powder 60 parts Antifoaming agent 1.4 parts Dispersing agent 2.6 parts Wetting agent
0.3 parts fungicide
0.7 parts Note) Parts are based on weight.

The basis weight of this undercoat paint layer is approximately 40 in terms of solid content.
It was 0 g/po.

Next, a part of the waterproof paint layer (2) was formed using an acrylic resin-based elastic waterproof paint with a viscosity of approximately 8000 cps, which was thickened by adding 2.0 parts by weight of a thickener to the above paint formulation. A decorative coating layer was formed. That is, the paint for the decorative coat layer was sprayed onto the pre-dried undercoat paint layer using an air spray method to give the surface of the waterproof paint layer (2) an uneven pattern with a top spray pattern, and then heated at 150°C for 4 minutes. Dry. The basis weight of this decorative coating layer is approximately 250 g in solid content.
Therefore, the basis weight of the waterproof paint layer (2) referred to in the present invention was 650 g/rd in total in terms of solid content. The thus obtained sheet-like material had a top-blown pattern on its surface, had a basis weight of about 700 g/rrr, and had a thickness of about 0.60 mm.

Next, a top coat film layer (3) is formed on the surface of the waterproof paint layer (2) of the sheet using the following paint, and has a thickness of 0.7 to 0.8-1 and a basis weight of about 780 g/ A waterproof decorative sheet-like molded product (1) was obtained.

For the paint for the top coat layer (3), a super weather-resistant fluororesin paint (solvent type curing fluororesin paint, white enamel paint: manufactured by Toa Paint ■, trade name New Garmet #5000) is used. It was applied using a one-way air spray method. The amount of coating was approximately 80 g/rf in terms of solid content. The obtained waterproof decorative sheet-like molded product (1) had a white colored overspray pattern on the surface and had excellent gloss.

The W4 fibrous sheet-like base layer (1) on the back side of this waterproof decorative sheet-like molded product (1) is made mainly of non-vulcanized butyl rubber, and a binder, filler, stabilizer, etc. are mixed therein. The resulting mixture was made into a sheet with a thickness of about 0.7 mm using a calender roll, and the obtained adhesive waterproof rubber sheets were overlaid and pressed together, and then laminated and fixed to the waterproof decorative sheet-like molded product (1). An adhesive waterproof rubber sheet layer (4) was formed. Release paper (6) was attached to the exposed surface of this rubber sheet layer (4).

As described above, the adhesive waterproof rubber sheet 8 according to the present invention, that is, as shown in FIG.
Layer (4), sheet-like base layer (1) 1 has cosmetic properties on the surface and is a simple adhesive layer consisting of a waterproof paint layer (2) made of water-based waterproof paint, and a top coat film layer (3). They produced decorative sheets for wall coverings. In addition, the code (5
) is a reinforced net using cheesecloth.

When this decorative sheet of the present invention was bonded and pressure-bonded to the surface of an ALC board (lightweight foamed concrete board) after removing the release paper (6) on the back side, safe and sufficient bonding was achieved. In the same way, a flexible slate board (asbestos-cement board) was also pressure bonded, and the adhesion was safe and sufficient.

In addition, in order to achieve more complete adhesion, a chloroprene rubber solvent-type adhesive diluted with a solvent was applied by spraying onto the surface of a 0.81-thick zinc steel plate and allowed to dry.
After the primer treatment, when the decorative sheet of the present invention was bonded and bonded, the adhesion properties were further improved.

Example 2 A polyester film with a thickness of 30 μm was passed through a solvent-type epoxy resin primer solution, then dried and heat-treated, and the primer-treated film was used as the sheet-like base layer (1) of the present invention.

On this sheet-like base layer (1), the water-based elastic acrylic resin paint for undercoat of Example 1 was applied with a roll coater and pre-dried to a solid content of 350 g/r.
An undercoat layer of rr was formed. Then, a water-based elastic acrylic resin paint (additional amount of thickener: 1.2 parts) was applied on top of it by a spray method to give a solid content of 280 g/
After applying m and applying vibration with a vibrator, 1
The waterproof paint Fi! in this example was dried at 50° C. for 4 minutes to obtain a sheet-like product on which a decorative coat layer with a gentle enamel-like uneven pattern was formed. The basis weight of j(2) is 630 g/i in total in terms of solid content.

A top coat film layer (3) is formed by spraying a pale blue acrylic silicone resin paint (Kanekazem Lac: trade name) onto the surface of the sheet-like object obtained. did. Top coat coating layer (3
) The amount of paint ' was approximately 100 g/m in solid content. The obtained waterproof decorative sheet-like molded product (1) was integrally laminated with a 1.0 m thick adhesive waterproof rubber sheet layer (4) in the same manner as in Example-1, and then a release paper ( 6)
A simple adhesive wall decorative sheet of the present invention as shown in FIG. 2 was obtained.

Example-3 A waterproof paint M (2) was formed on the same fibrous sheet-like base layer (1) as in Example-1, and the surface had a top-sprayed pattern.
Aqueous, metallic-like acrylic resin top coat paint (manufactured by Fujiwara Kagaku ■), product name: Metallic-W, mica-based metallic, was applied to the surface of a sheet with a basis weight of 700 g/Po and a thickness of approximately 0.6+III. A toning paint (silver color) was applied using a one-way spray method to form a metallic top coat layer (3). The basis weight of the top coat coating layer (3) was 90 g/rrr in terms of solid content. This waterproof decorative sheet-like molded product (1) is coated with an adhesive waterproof rubber sheet Ji (4 sheets) of rubber/asphalt compound type with a thickness of 1.0 mm.
) were combined and integrated to obtain a decorative sheet of the present invention as shown in FIG.

In addition, a curable fluororesin-based clear paint for top coat was further applied on the top coat layer (3) of the waterproof decorative sheet-like molded product (1), and the surface gloss was excellent. A composite two-stage top coat film layer was also formed.

Example-4 Using the fibrous sheet-like base layer (1) of Example-1,
On top of this, an acrylic resin-based elastic waterproof paint having the proportion shown in Example 1 is applied using a roll coater, and this paint is partially impregnated into the nonwoven fabric of the same substrate to form a waterproof paint layer (2). (as an undercoat). The degree of impregnation was adjusted to about 50 to 60% of the thickness of the paper-like nonwoven fabric. The coating amount of the paint is approximately 550g/solid content.
It was set as m. It was dried at 150° C. for about 4 minutes to obtain a sheet-like product with a relatively smooth surface.

Then, this sheet-like material was divided into the following A and B to form top cord coating layers.

Case A: On the surface of the above sheet-like material, a water-based acrylic resin multicolored paint (manufactured by Fujikura Kasei), which is a mixture of four colors, is added.
130 g of solid content (product name Sun Art Fleck)
/- amount applied with one-way spray method and dried, application amount 680
A multicolored decorative waterproof paint layer (2) (as a decorative coat) was formed on the surface with g/rrr (solid content).

Then, on top of this waterproof paint layer (2), an acrylic silicone-based clear paint for top coat is applied, and the solid content is approximately 6.
A transparent top coat film layer (3) of 0 g/- was formed to obtain a waterproof decorative sheet-like molded product (1).

Case B Using the above sheet-like material, brick-like printing was performed on the surface of the smooth waterproof paint layer (2) (as an undercoat) by a screen printing method. Brick-like is a pattern that looks like bricks piled up by adding a play color. Acrylic urethane solvent-based ink is used as the printing ink, and a waterproof paint layer (2) with a brick-like printed pattern on one surface is used. ).

Next, an acrylic silicone clear resin paint was sprayed on the surface to give a solid content of 120g/rI?
coating to form a transparent top coat film layer (3),
A waterproof decorative sheet-like molded product (1) was obtained.

The waterproof decorative sheet-like molded products (1) obtained in Case A and Case B were prepared according to Example-1.

The decorative sheet of the present invention as shown in FIG. 1 was obtained by laminating it with a butyl rubber-based adhesive waterproof rubber sheet layer (4) having a thickness of 0.7+am, and further laminating with a release paper (6). .

The product of the present invention according to Case A is particularly useful for interior applications in rooms with high moisture content, such as bathrooms and toilets, while the product in Case B is particularly useful for exterior applications such as walls.

<Effects of the Invention> The easy-to-adhesive decorative wall covering sheet of the present invention imparts an elegant surface appearance to a wall surface simply by pasting and pressure-bonding it, and also prevents moisture and mold from coming in from both the external side and the base side. It is very useful because it prevents infiltration and also provides excellent water resistance and mildew resistance. Therefore, interior walls, steel plates, and zinc steel plates that require moisture-proofing and waterproofing in particularly humid rooms such as bathrooms and toilets.

ALC is widely used for interior materials that are attached to partition walls made of metal plates such as aluminum plates and colored steel plates, and to the outer surfaces of metal furniture.
Inorganic panels such as boards, PC (precast concrete) boards, slate boards, GRC (glass fiber reinforced concrete) boards, pulp cement boards, gypsum boards, calcium silicate boards, and even exterior applications such as lips. Preference 1: Can be used. In addition, costs have been reduced through industrial production.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing an example of a simple adhesive decorative wall covering sheet according to the present invention, and FIG. 2 is a longitudinal sectional view showing an example of the same. (1) Waterproof decorative sheet-like molded product (1) Sheet-like base layer (2) Waterproof paint layer (3) Top coat coating layer (4) Adhesive waterproof rubber sheet layer (5) Reinforcement net (6) Release paper or higher

Claims (1)

[Claims] 1. Adhesive waterproof rubber sheet layer (4) sequentially from the adhesive side
, a simple adhesive decorative sheet for wall covering, characterized in that a sheet-like base layer (1), a waterproof paint layer (2), and a top coat film layer (3) are laminated. 2. The simple adhesive decorative wall covering sheet according to claim 1, wherein the adhesive waterproof rubber sheet layer (4) is made of a compound mainly containing butyl rubber. 3. The simple adhesive decorative sheet for wall covering according to claim 1, wherein the waterproof coating layer (2) is made of a water-based acrylic resin paint. 4. The top coat film layer (3) is made of at least one type of top coat paint of acrylic resin, acrylic urethane resin, curable fluororesin, or acrylic silicone resin. Easy-to-adhesive wall covering decorative sheet as described in Section 1. 5. Claim 1 in which all or part of the top coat coating layer (3) contains metal powder or mica-based powder
4. The simple adhesive wall covering decorative sheet as described in item 1 or 4. 6. The simple adhesive according to claim 1, wherein the surface of the decorative wall covering sheet has surface decorative properties consisting of at least one of colored tile-like makeup, three-dimensional uneven makeup, multicolored makeup, or printed makeup. Decorative sheet for wall covering.