JP2003129635A - Wall substrate material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wall substrate material capable of preventing a wall paper from being broken and having non-combustibility required for a building material even when a crack occurs in a wall basic material by providing and bonding the wall substrate material between the wall basic material and the wall paper. SOLUTION: This wall substrate material is constituted in such a way that a metallic sheet is laminated on one face of a soft foaming sheet having apparent density of 0.025 to 0.200 g/cm<3> , and a nonwoven fabric is laminated thereon.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention is used by adhering as a base material between a wall base material such as a concrete wall of a building and a wallpaper as a surface material, and the wall base material is cracked. The present invention relates to a wall base material which can prevent the wallpaper from being torn even when it is broken and has a non-combustible performance required as a building material.

[0002]

2. Description of the Related Art Conventionally, a reinforced concrete building made by pouring concrete into a formwork with reinforcing bars is
If the roof is not sufficiently insulated, internal distortion caused by solar heat will cause cracks in the concrete wall and the wallpaper adhered to the surface of the concrete wall will break.

As a method of preventing the wallpaper from being broken due to the internal distortion as described above, for example, Japanese Patent Laid-Open No. 10-8876.
As described in Japanese Patent Laid-Open No. 7-27127 and Japanese Patent Laid-Open No. 10-227117, it is shown that a wall base material made of concrete is laminated on the surface and a wallpaper is attached thereon to form a wall body. .

However, in the wall body having the above-mentioned structure, there is a problem that it takes time and labor for construction and the wall body becomes thicker than necessary, so that the living space or the living room space becomes narrow.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to prevent the wallpaper from breaking even if the wall base material is cracked by interposing and adhering the wall base material and the wallpaper. It is an object of the present invention to provide a wall base material that can be obtained and has noncombustibility required for building materials.

[0006]

[Means for Solving the Problems]

The wall base material of the present invention has an apparent density of 0.0.
A metal sheet is laminated on one surface of a soft foam sheet of 25 to 0.200 g / cm ³ , and a non-woven fabric is further laminated.

As the soft foam sheet used in the present invention, any conventionally known one can be used, and examples thereof include foam sheets made of polyolefin resin, polyurethane resin and the like. Among them, polyolefin resin foam sheet is preferable because it is excellent in aging resistance and stretchability, and further, closed cell crosslinked polyolefin resin foam sheet is more preferable because it is excellent in compression resistance and durability. .

Examples of the polyolefin resin include low density polyethylene, medium density polyethylene, high density polyethylene, and ethylene-α-containing ethylene as a main component.
Examples thereof include olefin copolymers, ethylene-vinyl acetate copolymers containing ethylene as a main component, polypropylene, and propylene-α-olefin copolymers containing propylene as a main component. These may be used alone or two kinds. You may use together above. Further, the copolymer may be either a random copolymer or a block copolymer. As the α-olefin constituting the ethylene-α-olefin copolymer, for example, propylene, 1-butene, 1-pentene, 4-methyl-1-pentene, 1-hexene, 1-heptene, 1-
Examples of the α-olefin that constitutes the propylene-α-olefin copolymer include ethylene, 1-butene, 1-pentene, and 4-methyl-1-.
Pentene, 1-hexene, 1-heptene, 1-octene and the like can be mentioned.

When the apparent density of the soft foam sheet becomes small, the resulting wall base material cannot absorb the deformation and breakage of the wall base material and cannot prevent the wallpaper from breaking. 0.025 to 0 because the resulting wall base material cannot absorb deformation and breakage of the wall base material and cannot prevent the wallpaper from breaking. limited to ^{.200g / cm 3, 0.066~0.120g / cm} 3 are preferred. The apparent density is a value measured according to JIS K6767.

Whether the soft foamed sheet has a small tensile strength or a large tensile strength, the obtained wall base material cannot absorb deformation and breakage of the wall base material, and can prevent the wallpaper from breaking. Since it disappears, 0.4 to 7.0 MPa is preferable. The tensile strength is a value measured according to JIS K6767.

If the elongation of the soft foam sheet becomes small, the obtained wall base material cannot absorb deformation, breakage, etc. of the wall base material, and cannot prevent the wallpaper from breaking. Is preferred, and more preferably 15
It is 0% or more. The elongation is a value measured according to JIS K6767.

When the thickness of the soft foam sheet is reduced, the resulting wall base material cannot absorb deformation, breakage, etc. of the wall base material, and cannot prevent the wallpaper from breaking. If so, the living space and living room space after construction will be narrowed, and the resulting wall base material will be too soft, and a discomfort will occur when the wallpaper is touched, so 0.4-2 mm is preferable.

The method for obtaining the soft foam sheet is not particularly limited, and any conventionally known method may be adopted. For example, in the case where the soft foam sheet is a closed-cell cross-linked polyolefin resin foam sheet, which is a preferred form of the soft foam sheet, a thermal decomposition type foaming agent is added to the polyolefin resin, and the temperature at which the thermal decomposition type foaming agent does not substantially decompose. A method is preferred in which the composition is melt-kneaded with, extruded into a sheet, irradiated with ionizing radiation to crosslink the sheet, and then heated to a temperature not lower than the decomposition temperature of the thermal decomposition type foaming agent to foam.

Examples of the thermal decomposition type foaming agent include azodicarbonamide, benzenesulfonyl hydrazide,
Examples thereof include N, N-dinitrosopentamethylenetetramine, toluenesulfonyl hydrazide and 4,4-oxybis (benzenesulfonyl hydrazide), which may be used alone or in combination of two or more. Among them, azodicarbonamide is preferable because it has excellent gas generation amount, handleability, and the like. The addition amount of the thermal decomposition type foaming agent may be appropriately adjusted depending on the desired apparent density of the obtained closed-cell crosslinked polyolefin resin foam sheet, but usually,
The amount is preferably 1 to 30 parts by weight, more preferably 5 to 20 parts by weight, based on 100 parts by weight of the polyolefin resin.

Examples of the ionizing radiation include electron beams, X-rays, α rays, β rays, γ rays and the like. The dose of ionizing radiation may be appropriately adjusted according to the desired degree of crosslinking of the obtained closed-cell crosslinked polyolefin-based resin foam sheet, but if the amount is small, the desired degree of crosslinking cannot be obtained, and if it is large, the degree of crosslinking is large. Since it becomes too high and the foamability decreases,
Usually, 1 to 50 Mrad is preferable.

The metal sheet used in the present invention includes:
There is no particular limitation as long as it has a non-combustibility required for building applications. Examples of the metal material forming the metal sheet include aluminum, iron, zinc, gold, silver, copper and the like. Moreover, you may laminate | stack and use a different metal sheet as needed.

The term "nonflammability" as used in the present invention means that the amount of radiant heat is 5
When heated for 20 minutes under conditions of 0 kW / m ² (maximum heat generation rate is over 200 kW, time is 10 seconds or less, total heat generation is 8 mJ / m ² or less), shape is maintained (shape retention time is 20 minutes Above). Such noncombustibility can be evaluated using a corn calorimeter.

When the thickness of the metal sheet becomes thin, the incombustibility of the obtained wall base material decreases, and when it becomes thick, the obtained wall base material cannot absorb deformation, breakage, etc. of the wall base material, and the wallpaper Can not be prevented from breaking, and also
Since workability is reduced, it is preferably 0.010 to 0.100 mm, more preferably 0.025 to 0.050 mm.
Is.

The non-woven fabric used in the present invention may be a non-woven fabric composed of inorganic fibers, organic fibers or the like, which may or may not have non-combustibility. A non-combustible non-woven fabric is preferable because the surface of the constituent fibers is often non-combustible and imparted with non-combustibility, and the adhesiveness to the wallpaper described later may be insufficient. Examples of the inorganic fibers include glass fibers and carbon fibers, which may be used alone or in combination of two or more. Among them, polyester fiber is preferable because it has excellent adhesiveness to the wallpaper described later. Examples of the organic fiber include polyethylene fiber, polypropylene fiber, polyester fiber, acrylic fiber, and the like.
You may use together 1 or more types.

When the basis weight of the above-mentioned non-woven fabric is small, the adhesion to the wall paper described later is deteriorated, and when it is large, the thickness becomes thicker, and the living space or living room space after construction becomes narrower. Is too soft, and a discomfort occurs when the wallpaper is touched, so 20 to 100 g / m ² is preferable.

The wall base material of the present invention is formed by laminating the metal sheet and the non-woven fabric in this order on one surface of the soft foam sheet.

As a method for laminating the soft foamed sheet and the metal sheet, any conventionally known method can be adopted. For example, starch paste, vinyl acetate emulsion, acrylic emulsion, styrene-butadiene rubber emulsion. Examples of the method include a method of bonding with an adhesive such as the above, a method of coating a thermoplastic resin on the surface of the soft foamed sheet of the metal sheet, and thermally laminating the same.

Examples of the thermoplastic resin coated on the metal sheet include low density polyethylene, medium density polyethylene, high density polyethylene, ethylene-α-olefin copolymer containing ethylene as a main component, and ethylene containing ethylene as a main component. -Polyethylene resin such as vinyl acetate copolymer, or propylene containing propylene as a main component-
Examples thereof include polyolefin resins such as α-olefin copolymers, which may be used alone or in combination of two or more kinds. Further, the copolymer may be either a random copolymer or a block copolymer. Among them, polyethylene resins are preferable because they have excellent adhesiveness. Examples of the α-olefin constituting the ethylene-α-olefin copolymer include propylene, 1-butene, 1-pentene, 4-methyl-1-pentene, 1-hexene, 1-heptene, 1-octene and the like. And propylene-α-
Examples of the α-olefin constituting the olefin copolymer include ethylene, 1-butene, 1-pentene, and 4
-Methyl-1-pentene, 1-hexene, 1-heptene, 1-octene and the like can be mentioned.

As a method for laminating the metal sheet and the non-woven fabric, any conventionally known method can be adopted, for example, adhesion of starch paste, vinyl acetate emulsion, acrylic emulsion, styrene-butadiene rubber emulsion, etc. Examples of the method include a method of adhering with an agent and a method of coating the above-mentioned thermoplastic resin on the non-woven fabric laminated surface of the metal sheet and thermally laminating. Above all, an adhesive or the like is soaked into the non-woven fabric, so that the method of thermal lamination is preferable.

In the wall base material of the present invention, the soft foam sheet is interposed between the wall base material and the wallpaper so that the soft foam sheet is on the wall base material side,
To be glued.

As the wall base material, any conventionally known material may be used, and examples thereof include a concrete wall and a gypsum board.

The method for laminating the wall base material and the wall base material is not particularly limited, and any conventionally known method may be adopted, for example, starch paste, vinyl acetate emulsion, acrylic emulsion. , A styrene-butadiene rubber emulsion or the like. Further, in order to improve the adhesiveness between the wall base material and the wall base material, a non-woven fabric or the like may be integrally laminated on the soft foam sheet side of the wall base material by an adhesive, heat lamination or the like.

As the wallpaper, any conventionally known one may be used, and examples thereof include thermoplastic resin sheets such as soft polyvinyl chloride resin sheets, paper and woven cloth.

The method of laminating the wall base material and the wallpaper is not particularly limited, and any conventionally known method may be adopted, for example, starch paste, vinyl acetate emulsion,
Examples of the method include bonding with an adhesive such as an acrylic emulsion or a styrene-butadiene rubber emulsion.

[0031]

Embodiments of the present invention will be described below. (Embodiment 1) FIG. 1 is a sectional view showing a state in which a wall base material 1 of the present invention is applied to concrete base materials 6 and 61. The wall base material 1 is an electron beam crosslinked closed cell polyethylene resin foam sheet 2 (apparent density 0.067 g / c).
m ³ , foaming ratio 15 times, thickness 1 mm, tensile strength 0.48
~ 0.60 MPa, elongation 220-300%),
An aluminum sheet 3 (thickness 0.030 mm) is laminated and integrated, and a nonwoven fabric 4 made of polyester fiber (basis weight 30 g / m ² ) is further laminated and integrated thereon. First, both sides of the aluminum sheet 3 are coated with polyethylene resins 51 and 52 to a thickness of 0.020 mm (basis weight of 10 g / m ² ), and the coated polyethylene resins 51 and 52 are used to form a foamed sheet. 2 and the aluminum sheet 3, and the aluminum sheet 3 and the non-woven fabric 4 were laminated and integrated by thermal lamination. Next, an adhesive 53 composed of a mixture of an acrylic emulsion and a styrene-butadiene rubber emulsion is applied to the surface of the foamed sheet 2 of the wall base material 1 in a coating amount of 6
It was applied so as to be 0 g / m ² and adhered to one surface of two concrete base materials 6 and 61 (each having a thickness of 5 mm, a length of 100 mm, and a width of 25 mm) whose lateral ends are abutted against each other. Further, an adhesive 54 composed of a mixture of an acrylic emulsion and a styrene-butadiene rubber emulsion is applied to the surface of the non-woven fabric 4 of the wall base material 1 in a coating amount of 6
It was applied so as to be 0 g / m ^2, and wallpaper 7 made of a soft polyvinyl chloride sheet was adhered to the surface to obtain a wall body as a whole.

(Example 2) As a closed-cell cross-linked polyethylene resin foam sheet, an apparent density of 0.100 g / c
m ³ , foaming ratio 10 times, thickness 2 mm, tensile strength 0.55
A wall base material was obtained in the same manner as in Example 1 except that a closed-cell crosslinked polyethylene-based resin foam sheet having a density of ˜0.70 MPa and an elongation of 231 to 311% was used. Further, a wall body was obtained from the obtained wall base material in the same manner as in Example 1.

(Comparative Example 1) One surface of an aluminum sheet (thickness 0.030 mm) was coated with polyethylene resin to a thickness of 0.020 mm (basis weight 10 g / m ² ), and the surface was coated with A nonwoven fabric made of polyester fiber (basis weight: 30 g / m ² ) was laminated by thermal lamination to obtain a wall base material. Next, an adhesive composed of a mixture of an acrylic emulsion and a styrene-butadiene rubber emulsion was applied to the surface of the aluminum sheet of the wall base material so that the coating amount was 60 g / m ^2, and Example 1 In the same manner as above, two concrete substrates were bonded to one surface. Further, a wallpaper made of a soft polyvinyl chloride sheet was adhered to the non-woven fabric surface of the wall base material in the same manner as in Example 1 to obtain a wall body.

Comparative Example 2 As a closed-cell crosslinked polyethylene resin foam sheet, an apparent density of 0.700 g / c
m ³ , foaming ratio 1.4 times, thickness 2 mm, tensile strength 4.5
A wall base material was obtained in the same manner as in Example 1 except that a closed-cell crosslinked polyethylene-based resin foam sheet having 0 to 6.50 MPa and an elongation of 500 to 700% was used. Further, a wall body was obtained from the obtained wall base material in the same manner as in Example 1.

(Comparative Example 3) A non-woven fabric made of glass fiber (basis weight: 150 g / m ² ) was coated on both sides with a polyethylene resin to a thickness of 0.020 mm (basis weight: 10 g / m ² ), A closed-cell crosslinked polyethylene resin foam sheet similar to that of Example 1 was laminated on one side and a nonwoven fabric made of polyester fiber similar to that of Example 1 was laminated on the other side by thermal lamination to obtain a wall base material. Further, a wall body was obtained from the obtained wall base material in the same manner as in Example 1.

Comparative Example 4 A wall base material was obtained in the same manner as in Comparative Example 3 except that the non-woven fabric made of glass fiber was changed to the non-woven fabric made of carbon fiber (basis weight: 150 g / m ² ).
Further, a wall body was obtained from the obtained wall base material in the same manner as in Example 1.

The wall base materials obtained in Examples and Comparative Examples
The tear resistance and flammability of the wallpaper were evaluated as follows, and the results are shown in Table 1. (Wallpaper tearing prevention property) Of the two concrete plates constituting the concrete base material of the wall body, one concrete plate is fixed, and the other one is fixed in the vertical direction of the concrete plate. The plates were pulled in a direction in which they separated from each other at a speed of 5 mm / min with a universal tensile tester, and the distance between the two concrete plates when the wallpaper started to break was measured.

(Flammability) As shown in FIG. 2, the wall base material 8
Is placed horizontally so that the nonwoven fabric made of polyester fiber is on the upper side, and further above the wall base material 8,
A corn calorimeter 9 manufactured by Atlas Co. was installed, and the wall base material 8 was heated for 20 minutes from the side of the nonwoven fabric made of polyester fiber under the condition of the radiant heat amount of 50 kW / m ² . After that, the wall base material 8 was visually observed, and when the shape was maintained, it was marked with ◯, and when it was burned and the original shape was not maintained, it was marked with x.

[0039]

[Table 1]

From the above, the wall base materials obtained in the examples are
It can be seen that it has a breaking distance of more than 2 mm, which is generally said to be the maximum width of cracks in a concrete base material, and has a flame resistance of 20 minutes, which is required as a nonflammability of building materials.

[0041]

INDUSTRIAL APPLICABILITY By interposing and adhering the wall base material of the present invention between the wall base material and the wallpaper, it is possible to prevent the wallpaper from being broken even if the wall base material is cracked. In addition, it has a nonflammability necessary as a building material.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view showing a state in which a wall base material obtained in Example 1 is applied to a concrete base material.

FIG. 2 is a schematic side view showing a combustion test method.

[Explanation of symbols]

1, 8: Wall base material 2: Foamed sheet 3: Aluminum sheet 4: Non-woven fabric made of polyester fiber 51, 52: Polyethylene resin 53, 54: Adhesive 6, 61: Concrete plate 7: Wallpaper 9: Corn calorimeter

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 2E110 AA02 AA48 AB04 AB23 BA03                       CA03 GA24X GA32W GA32X                       GA32Z GA42W GB01Z GB02Z                       GB05Z GB06Z GB07Z GB32W                       GB35W GB43W GB44W GB52W

Claims (4)

[Claims] 1. An apparent density of 0.025 to 0.200 g.
/ Cm ³ soft foam sheet, a metal sheet is laminated on one side, and a non-woven fabric is laminated on it. 2. The thickness of the metal sheet is 0.010 to 0.1
The wall base material according to claim 1, which is 00 mm. 3. The wall base material according to claim 1, wherein the non-woven fabric is made of polyester fiber. 4. The wall base material according to claim 1, wherein the soft foam sheet is a closed-cell crosslinked polyolefin resin foam sheet.