JPH07186336A - Wall covering material - Google Patents

Abstract

PURPOSE:To provide a water covering material developing characteristics having fire retardancy, generating no harmful gas at the time of the generation of a fire, incineration or combustion to achieve the safety of human life and gentle to environment. CONSTITUTION:A wall covering material is generally constituted by providing a resin layer (foamed layer or non-foamed layer) 2, an emboss forming layer 3 and a color pattern layer 4 on a lining base material. In the resin layer, at least 5-200 pts.wt. of a polyphosphoric carbamate type compd. is compounded with 100 pts.wt. of an ethylene/vinyl cetate copolymer resin or a resin based on an ethylene/vinyl acetate copolymer resin. Further, 50 pts.wt. or less of at least aluminum hydroxide and/or magnesium hydroxide and 50-100 pts.wt. of the polyphosphoric carbamate type compd. are compounded with 100 pts.wt. of the resin.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wall covering material, and more particularly to a wall covering material used for indoor walls, ceilings, etc., which is flame-retardant and does not generate harmful gas during combustion.

[0002]

2. Description of the Related Art In general, a wall covering material is provided with a synthetic resin layer on a backing material, is provided with a color pattern, is subjected to an embossing such as a squeezing pattern or an uneven pattern by a post-processing, or is a so-called color pattern.
The design effect is brought out by the method of stains on the head.
A vinyl chloride resin is generally used in the synthetic resin layer for reasons such as cost, processability, and flame retardancy.

[0003]

However, in the case of wall coverings made of vinyl chloride resin, hydrogen chloride gas is generated during combustion such as incineration or fire, so the safety of human life and the recent environmental protection. From the viewpoint of the above, there is a demand for a wall covering material that does not generate a harmful gas during combustion and has flame retardancy.

An object of the present invention is to provide a wall covering material which is flame-retardant, which is safe for human life and which does not generate harmful gas during combustion such as incineration or fire, and which is environmentally friendly. .

[0005]

In order to achieve the above object, the wall covering material of the present invention comprises 100 parts by weight of a resin mainly composed of ethylene-vinyl acetate copolymer resin or ethylene-vinyl acetate copolymer resin. On the other hand, a resin layer containing at least 5 to 200 parts by weight of a polyphosphoric acid carbamate compound is laminated on the backing substrate, or at least aluminum hydroxide and / or magnesium hydroxide is added to 100 parts by weight of the above resin. It is characterized in that a resin layer in which a polyphosphoric acid carbamate-based compound is mixed so that the total weight thereof is 5 to 200 parts by weight is laminated on the backing substrate.

[0006]

[Function] The ethylene-vinyl acetate copolymer resin does not generate harmful gas when incinerated or when fired. Further, flame retardancy can be achieved by blending an ethylene-vinyl acetate copolymer resin with an appropriate amount of a polyphosphoric acid carbamate compound or aluminum hydroxide and / or magnesium hydroxide and a polyphosphoric acid carbamate compound.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic cross-sectional view showing an embodiment of the wall covering material of the present invention, in which 1 is a backing substrate, 2 is a resin layer, 3 is an emboss forming layer, and 4 is a color pattern. As the backing substrate 1, knitted fabric, woven fabric, non-woven fabric, paper or the like can be used. Particularly, in the case of paper, flame-retardant paper, aluminum hydroxide paper, glass fiber paper and asbestos paper are preferable.

For the resin layer 2, an ethylene-vinyl acetate copolymer resin (EVA) or a resin mainly composed of EVA is used. The EVA can be arbitrarily selected in consideration of the vinyl acetate content and the melt flow rate. Particularly, EVA having a vinyl acetate content of 5 to 30% by weight, preferably 10 to 30% by weight is preferable. Further, EVA has a melt flow rate of 2 to
It is preferably 30 g / 10 minutes, more preferably 5 to 30 g / 10 minutes.

The resin layer 2 is not limited to EVA alone.
An olefin-based copolymer resin containing VA as a main component and containing no halogen or nitrogen can be mixed therein. Examples of these olefin-based copolymer resins include ethylene-methyl acrylate copolymer resin (EMA) and ethylene-ethyl acrylate copolymer resin (EEA). These olefin resins can be mixed with EVA alone or in combination.

Regarding the mixing ratio of EVA and these olefinic copolymer resins, the melt flow rate of the mixed resin and the dispersibility of the aluminum hydroxide and / or magnesium hydroxide and the polyphosphate carbamate compound in the mixed resin are taken into consideration. Should be arbitrarily selected as the mixing ratio.

As the flame retardant compounded in the above resin, a polyphosphoric acid carbamate compound is used alone, or aluminum hydroxide and / or magnesium hydroxide and a polyphosphoric acid carbamate compound are used in combination. The polyphosphoric acid carbamate-based compound has, for example, the structural formula shown below, and examples of commercially available products include OK-26 and W.
-3S (manufactured by Marubishi Yuka Co., Ltd.) is preferable.

[0012]

[Formula 1] In the above formula, A is a mixture of NH ₄ , H, and CONH ₂ .

The above-mentioned polyphosphoric acid carbamate compound is blended in an amount of 5 to 200 parts by weight when 100 parts by weight of EVA or a resin mainly composed of EVA is blended alone.
If the amount of the carbamate polyphosphate compound is less than 5 parts by weight, the flame-retardant effect is insufficient and it becomes impossible to satisfy the standard for wallpaper fire protection second-class quasi-incombustibility.
If it exceeds 00 parts by weight, it is difficult to obtain a good foam.
The more desirable compounding amount of the carbamate polyphosphate compound based on 100 parts by weight of EVA or EVA-based resin is 50 to 100 parts by weight.

EVA or EVA 100-based resin 100
When the polycarbamate-based compound and aluminum hydroxide and / or magnesium hydroxide are used in combination with respect to parts by weight, the total amount is 5 to 200 parts by weight. The reason for limiting these parts by weight is substantially the same as in the case of blending the polyphosphoric acid carbamate compound alone. Desirably, aluminum hydroxide and / or magnesium hydroxide: 100 parts by weight or less, polyphosphoric acid carbamate compound: 5 to 200 parts by weight based on 100 parts by weight of EVA or a resin containing EVA as a main component in the range of the total weight parts thereof. Partly compounded. If the blending amount of aluminum hydroxide and / or magnesium hydroxide exceeds 100 parts by weight, the flame retarding effect, particularly the calorific value becomes insufficient, which is not preferable.

Further, the compounding amount of the polyphosphoric acid type carbamate type compound used in combination with aluminum hydroxide and / or magnesium hydroxide is 5 to 2 with respect to 100 parts by weight of EVA.
If the amount is less than 5 parts by weight, the flame retardant effect, especially the heat generation amount (TdΘ), becomes insufficient, while on the other hand, 20
If it is more than 0 parts by weight, a good foam cannot be obtained.
Further, the blending ratio of aluminum hydroxide and / or magnesium hydroxide and polyphosphoric acid type carbamate type compound is preferably 0: 100 to 50:50.

If desired, the resin layer 2 in the present invention may contain stabilizers, lubricants, fillers, pigments and the like. The resin layer 2 may be either a non-foamed layer or a foamed layer, but in the case of the non-foamed layer, the sheet thickness must be reduced in order to maintain the flame retardancy of the wall covering material. The diaphragm applied to the wall covering is limited to a shallow diaphragm, or the commercial value of the wall covering is likely to decrease. Therefore, the resin layer 2 is preferably a foam layer.

When a polyphosphoric acid carbamate compound is blended as a flame retardant into EVA or a resin mainly composed of EVA, the foaming agent is 4,4'-oxybis (benzenesulfonyl hydrazide) [OBSH] or azodiene. The use of a foaming agent such as carboxamide [ADCA] is suitable for forming a foam layer while maintaining flame retardancy. The foaming conditions are preferably temperature: 180 to 230 ° C. and time: 2 minutes to 10 seconds.

The wall covering material of the present invention can be produced, for example, by kneading a predetermined composition with a calender at about 110 ° C., performing printing, and then subjecting each step of foaming, pressing and finishing. The desired wall covering is obtained. In this case, the foaming conditions described above (for example, 200 ° C. × 40 to 50 seconds, 220 ° C.)
When the surface of the foamed product obtained in (× 20 to 30 seconds) is heated at about 70 ° C. to 100 ° C. by a heat source such as an infrared heater and then cold embossed, the narrowing property is extremely good and a sharp embossed pattern is formed. A product with layer 3 is obtained.

Example 1 100 parts by weight of ethylene-vinyl acetate copolymer resin (EVA) [Evatate D-4010 manufactured by Sumitomo Chemical Co., Ltd. Vinyl acetate content: 10 wt% Density: 0.93 Melt flow rate: 10 g / 10 min] Polyline Acid-based carbamate-based compound 70 parts by weight [OK-26 manufactured by Marubishi Yuka Kogyo Co., Ltd.] Aluminum hydroxide 30 parts by weight [Hidilite H-42S Showa Light Metal Co., Ltd.] 30 parts by weight Heavy calcium carbonate 30 parts by weight Processability improvement Agent Metal Soap 3 parts by weight Pigment Titanium 3 parts by weight Chemical Blowing Agent 6 parts by weight A composition consisting of [OBSH] was obtained.

Using this composition, a sheet was prepared using a calender sheet molding machine having 152 m / mφ.
The calender roll surface temperature was set to 110 ° C., and after kneading for 5 minutes, a 0.20 m / m thick sheet and an aluminum hydroxide paper as a backing paper were laminated. When the obtained sheet having the backing paper was subjected to foaming processing in a gear oven at 200 ° C. for 40 seconds, a foamed sheet having a total thickness of about 1.3 m / m was obtained. Subsequent embossing was performed using an embossing machine to obtain a very beautiful wallpaper that was rich in volume and did not have a sticky feeling like conventional PVC wallpaper. The foamed sheet was evaluated and the results shown in Table 1 were obtained.

Example 2 Ethylene-vinyl acetate copolymer resin [Evatate D-40
10] 100 parts by weight and polyphosphoric acid-based carbamate compound [OK-26] 100 parts by weight, except that the same components as in Example 1 were added and molded in the same manner as in Example 1 to give a rich wallpaper. was gotten. The foamed sheet was also evaluated in the same manner as in Example 1, and the results are shown in Table 1.

Example 3 Ethylene-vinyl acetate copolymer resin [Evatate D-40
10] Example 1 except that 100 parts by weight, 70 parts by weight of a polyphosphoric acid-based carbamate compound [W-3S manufactured by Marubishi Yuka Kogyo Co., Ltd.], and 30 parts by weight of aluminum hydroxide [HYDILITE H-42S] were added. By adding the same components and molding in the same manner as in Example 1, a wallpaper rich in volume was obtained. The foamed sheet was also evaluated in the same manner as in Example 1, and the results are shown in Table 1.

Example 4 Ethylene-vinyl acetate copolymer resin [Evatate D-40
10] 100 parts by weight and 100 parts by weight of a polyphosphoric acid-based carbamate compound [W-3S manufactured by Marubishi Yuka Kogyo Co., Ltd.] were added, and the same components as in Example 1 were added, and molding was performed in the same manner as in Example 1. I got a wallpaper with a lot of volume. The foamed sheet was also evaluated in the same manner as in Example 1, and the results are shown in Table 1.

Example 5 Ethylene-vinyl acetate copolymer resin [Evatate D-40
10] Example 1 except that 100 parts by weight, 50 parts by weight of a polyphosphoric acid-based carbamate compound [OK-26 manufactured by Marubishi Yuka Kogyo Co., Ltd.], and 50 parts by weight of aluminum hydroxide [Hidilite H-42S] were added. By adding the same components and molding in the same manner as in Example 1, a wallpaper rich in volume was obtained. The foamed sheet was also evaluated in the same manner as in Example 1, and the results are shown in Table 1.

Comparative Example 1 Ethylene-vinyl acetate copolymer resin [Evatate D-40
10] 100 parts by weight and 100 parts by weight of aluminum hydroxide [HYDILITE H-42S] were added, and the same components as in Example 1 were added except that the polyphosphoric acid-based carbamate compound was not added. It was molded into a large volume wallpaper. The foamed sheet was also evaluated in the same manner as in Example 1, and the results are shown in Table 1.

[0026]

[Table 1]

* Td Θ: temperature time area, CA: smoke generation coefficient The criteria for the above semi-incombustible material are as follows.・ Temperature area TdΘ (° C min) 1 that exceeds the standard temperature curve
00 or less-Smoke generation coefficient (CA) 60 or less From Table 1, the wallpaper of the example is most suitable as a wall-covering material of the second grade wallpaper from surface tests.

[0028]

As described above, according to the present invention, the surface layer is made of an olefin resin and is excellent in safety without generating a halogen gas during a fire, incineration or fire, and the like. It is possible to provide a new wall covering material such as wallpaper without the problem of bleeding of a plasticizer.

[Brief description of drawings]

FIG. 1 is a sectional view schematically showing an embodiment of the present invention.

[Explanation of symbols]

 1 Backing substrate 2 Resin layer 3 Embossing layer 4 Color pattern

Claims (6)

[Claims] 1. A resin 100 comprising an ethylene-vinyl acetate copolymer resin or an ethylene-vinyl acetate copolymer resin as a main component.
A wall covering material comprising a backing base material and a resin layer containing at least 5 to 200 parts by weight of a polyphosphoric acid carbamate compound, based on parts by weight. 2. A resin 100 comprising an ethylene-vinyl acetate copolymer resin or an ethylene-vinyl acetate copolymer resin as a main component.
A resin layer in which at least aluminum hydroxide and / or magnesium hydroxide and a polyphosphoric acid carbamate-based compound are blended so that the total weight part thereof is 5 to 200 parts by weight based on parts by weight is laminated on the backing substrate. Characteristic wall covering. 3. A resin 100 comprising an ethylene-vinyl acetate copolymer resin or an ethylene-vinyl acetate copolymer resin as a main component.
At least aluminum hydroxide and / or magnesium hydroxide: 1 part by weight:
00 parts by weight or less Polyphosphoric acid carbamate compound: 5 to 200 parts by weight Aluminum hydroxide and / or magnesium hydroxide and polyphosphoric acid carbamate compound are added in a total amount of 5 to 200 parts by weight. The wall covering material according to claim 2, wherein the resin layer mixed with (1) is laminated on the backing base material. 4. The wall covering material according to any one of claims 1 to 3, wherein the ethylene-vinyl acetate copolymer resin has a vinyl acetate content of 5 to 30% by weight. 5. The wall covering material according to any one of claims 1 to 3, wherein the ethylene-vinyl acetate copolymer resin has a melt flow rate of 2 to 30 g / 10 minutes. 6. The ethylene-vinyl acetate copolymer resin as a main component is an ethylene-vinyl acetate copolymer resin as a main component, and an olefinic copolymer resin containing no halogen and nitrogen is mixed therein. Claim 1 to
The wall covering material according to claim 3.