JPH02243337A - Fire retardant vinyl wall paper - Google Patents

Abstract

PURPOSE:To enhance fire retardance and also printability and opaque properties by using an inorganic base composed mainly of inorganic compound powder and pulp and forming coating layers composed of an inorganic compound as main component printed with an organic binder on one or both surfaces of the inorganic base. CONSTITUTION:The polymerization rate of inorganic compound powder and pulp constituting an inorganic base is 50-90wt.% of inorganic compound powder, preferably 65-85wt.%, and 10-50wt.% of pulp, preferably 10-30wt.%. The basis weight of the inorganic base is 60-200g/m<2>, and particularly 80-160g/m<2> is preferred. As for the inorganic compound powder, aluminum silicate, calcium carbonate, aluminum hydroxide, talc or the like can be used, and particularly, for example, a substance such as aluminum hydroxide from which water of crystallization is separated to exercise endothermic action at the time of being heated is preferred. The blending rate of an organic binder to the inorganic compound is 5-100 pts.wt. of organic binder expressed in term of solid content, preferably 10-50 pts.wt., to 100 pts.wt. of the inorganic compound. The coverage of a coating layer to the inorganic base is approximately 5-50g/m<2> on one surface in the dried stated, and particularly 10-50g/m<2> is preferred.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a flame-retardant vinyl wallpaper in which a vinyl chloride resin layer is laminated on a base sheet layer used as an interior material for buildings.

[Conventional technology]

As building styles became more modern, wallpaper came to be used more and more as an interior material.

Among these wallpapers, vinyl wallpapers in which a vinyl chloride resin layer is laminated on a base sheet are often used.

This vinyl wallpaper is easy to print and embossing, and not only has an excellent design, but also has economic cost benefits including ease of installation.

This type of wallpaper also has the flame retardancy required of this type of building material, and for these reasons is increasingly in demand.

Conventionally, vinyl wallpaper has been made flame retardant by subjecting the base sheet to flame retardant treatment or adding flame retardants to the vinyl chloride resin layer. When vinyl chloride resin is exposed to high temperatures accompanied by flames, the composition decomposes, and of course it can ignite itself.
It is also well known to emit smoke.

For this reason, conventional methods for improving the flame retardancy of vinyl wallpaper include treating the base sheet, which mainly consists of valves, with a flame retardant such as guanidine sulfamate, guanidine phosphate, or ammonium sulfamate, or using vinyl chloride resin. Smoke suppressants such as antimony compounds, molybdenum compounds, borates, organic phosphorus compounds, halogen compounds, aluminum hydroxide, and magnesium carbonate are added to the vinyl chloride resin composition of the layer.

[Problem to be solved by the invention]

By the way, in the past, in order to improve the flame retardancy of vinyl wallpaper, the base sheet was treated with flame retardant treatment as mentioned above, or a flame retardant was added to the vinyl chloride resin layer. Conventional technology has not been able to meet the demand for improved safety, that is, a higher level of flame retardancy, as buildings have become taller and denser in recent years.

The present invention was made against the background of such conventional technology, and an object of the present invention is to provide a flame-retardant vinyl wallpaper that can improve flame retardancy, as well as printability and opacity.

[Means to solve the problem]

The present invention provides a vinyl wallpaper in which a vinyl chloride resin layer is laminated on a base sheet, in which the base sheet is an inorganic base paper containing an inorganic compound powder and a valve as main components, and an inorganic compound is coated on one or both sides of the inorganic base paper. The present invention provides a flame-retardant vinyl wallpaper characterized by comprising a coating layer containing an organic binder as a main component.

The base sheet as used in the present invention is a base layer of flame-retardant vinyl wallpaper, which includes an inorganic base paper made mainly of inorganic compound powder and pulp as described above, and at least one side of this inorganic base paper (i.e., It consists of a coat layer that is laminated on one or both sides and contains an organic binder containing an inorganic compound as the main component.

Any inorganic compound powder may be used as long as it does not adversely affect the design and quality that are the characteristics of the present invention, such as titanium oxide, silicon dioxide, aluminum silicate, magnesium silicate, and calcium carbonate. , magnesium hydroxide, zinc oxide, barium sulfate, aluminum hydroxide, talc, and the like can be used, but it is particularly preferable to use aluminum hydroxide, which releases water of crystallization and exerts an endothermic action when heated.

Moreover, as this pulp, pulp normally used for boat fishing can be used.

In addition, in addition to these inorganic compound powders and pulp, hemp, glass fibers, flocculants, sizing agents, etc. may be added to this inorganic base paper to maintain paper strength, if necessary.

The mixing ratio of the inorganic compound powder constituting this inorganic base paper and the bulbs is 50 to 90% by weight, preferably 65 to 85% by weight of the inorganic compound powder, 10 to 50% by weight of the bulbs,
Preferably it is 10 to 30% by weight, and if the inorganic compound powder is less than 50% by weight, that is, if the bulb exceeds 50% by weight, the paper strength will improve but the flame retardance will decrease, while if the inorganic compound powder exceeds 90% by weight That is, the pulp is 10% by weight.
If it is less than that, the flame retardance will improve, but the paper strength will not only decrease (but also the workability during paper making will suffer from inconveniences such as paper breakage).

The basis weight of this inorganic base paper is preferably 60 to 200 g/rd, particularly 80 to 160 g/rrT, and 60 g/rI
? If it is less than 200 g/rd, the strength will be weak and problems will arise in the texture of the wallpaper, while if it exceeds 200 g/rd, problems will arise in workability.

The coating layer in the present invention is a coating layer laminated on at least one surface of the inorganic base paper as described above, and is composed of an inorganic compound as a main component and an organic binder.

As the inorganic compound used in this coat layer, the same inorganic compound powder as that used in the above-mentioned inorganic base paper can be used.

Examples of the organic binder used in this coating layer include acrylic resin, melamine resin, vinyl chloride resin, vinyl acetate resin, ethylene-vinyl acetate copolymer resin (EVA), and styrene-butadiene rubber (SBR).
Organic binders such as can be used.

The blending ratio of the organic binder to the inorganic compound is 5 to 100 parts by weight, preferably 10 to 50 parts by weight, in terms of solid content, per 100 parts by weight of the inorganic compound.
If it is less than 5 parts by weight, the fluidity will decrease and the coating properties during lamination of the coat layer will decrease;
If the amount exceeds 1 part by weight, coating properties will improve, but flame retardancy will decrease because the amount of flammable organic binder added will increase.

This organic binder is used in the form of an aqueous emulsion for boat fishing, and has a solid content concentration of 20 to 60% by weight.
In particular, it is used at around 50% by weight.

Lamination by coating can be used for laminating this coat layer on the inorganic base paper, and a general coating method such as a doctor coat, a roll coater 1, or an air knife can be used for this coating operation.

The amount of this coating layer adhered to the inorganic base paper is preferably about 5 to 50 g/% on one side in a dry state, particularly 10 to 50 g/rrr, and if it is less than 5 g/%, the coating layer is too thin and the flame retardance is not improved. The effects of the present invention such as
If it exceeds 0 g/rrf, the coating layer becomes unnecessarily thick (uneconomical) and also causes trouble in the coating operation, which is not preferable.

The vinyl chloride resin layer in the present invention is a resin layer laminated on a base sheet as described above, and the vinyl chloride resin forming this vinyl chloride resin layer is obtained by general suspension polymerization or emulsion polymerization. In addition to vinyl chloride resin alone or copolymers of vinyl chloride and vinyl acetate, ethylene, propylene, maleate esters, methyl methacrylate, methacrylate esters, higher vinyl ethers, and mixtures of these and other polymers, It includes.

Further, as the plasticizer contained in this vinyl chloride resin layer, ordinary plasticizers applied to vinyl chloride resin can be used, but preferably triphenyl phosphate (TPP), which is a flame retardant plasticizer, can be used. ), cresyl phenyl phosphate (CDP), diphenylisopropylphenyl phosphate, tri-2-ethylhexyl phosphate (TOP), octyl diphenyl phosphate,
Phosphate esters such as isodecyl diphenyl phosphate, halogen-containing phosphate esters such as trisdichloropropyl phosphate, trisbromochloropropyl phosphate, and halogen-containing plasticizers such as chlorinated paraffin are used. .

Particularly preferred are monoalkyl diaryl phosphates such as propyl diphenyl phosphate, octyl diphenyl phosphate, and isodecyl diphenyl phosphate.

In addition, other plasticizers include, for example, phthalic acid';-
2-ethylhexyl ester (DOP), dinonyl phthalate (DNP), diisononyl phthalate (DINP), butylbenzyl phthalate (
General phthalate ester plasticizers such as BBP), cyphthyl phthalate (DBP), dioctyl adipate (DOA), dioctyl sebacate (DO3), and dioctyl azelaate (DOZ) In addition to general fatty acid ester plasticizers, polymeric plasticizers such as polyester plasticizers can be used, and there are no particular limitations as long as they can be used as plasticizers for vinyl chloride resins.

The amount of these plasticizers added is 30 to 150 parts by weight, preferably 50 to 10 parts by weight, per 100 parts by weight of vinyl chloride resin.
If the amount is 0 parts by weight and less than 30 parts by weight, the vinyl chloride resin layer becomes hard and difficult to apply as wallpaper, while if it exceeds 150 parts by weight, it becomes too soft and is not preferred as wallpaper.

In addition, it is particularly preferable that the plasticizer contains at least 50% by weight of the monoalkyl diaryl phosphate.

The proportion of this monoalkyl diaryl phosphate to the total amount of plasticizer added is 50% or more, preferably 70 to 100% by weight, and if it is less than 50% by weight, a good smoke suppression effect may not be obtained. .

Note that this vinyl chloride resin layer may be non-foamed or foamed. When foaming, for example, azodicarbonamide, which is a foaming agent for vinyl chloride resin, is used as a foaming agent.
Foaming can be achieved by using dinitrosopentamethylenetetramine, oxybisbenzenesulfonyl hydrazide, etc., and a foaming accelerator or foaming inhibitor may be added as necessary.

Furthermore, a filler is usually blended into this vinyl chloride resin layer.

As this filler, for example, calcium carbonate, titanium oxide, magnesium hydroxide, talc, nodrotalcite, magnesium carbonate, aluminum hydroxide, etc. can be used, and the use of magnesium hydroxide in particular reduces smoke generation. Become something.

The amount of calcium carbonate added is 100% of vinyl chloride resin.
30 parts by weight or more, preferably 50 to 20 parts by weight
If the amount is less than 30 parts by weight, the smoke suppression effect may be reduced, while if it exceeds 200 parts by weight, the amount added may be too large and the resulting sheet may be easily folded.

Further, the amount of titanium oxide added is 5 parts by weight or more, preferably 10 to 50 parts by weight, based on 100 parts by weight of the vinyl chloride resin.If it is less than 5 parts by weight, the smoke suppression effect may decrease; If the amount exceeds 1 part by weight, the amount added may be too large and the resulting sheet may be easily folded.

Furthermore, the amount of magnesium hydroxide added is 1 part by weight or more, preferably 5 to 1 part by weight, per 100 parts by weight of the vinyl chloride resin.
The amount is 50 parts by weight, and if it is less than 1 part by weight, the smoke generation suppressing effect may be reduced, while if it exceeds 50 parts by weight, the amount added is too large and may cause breakage.

Furthermore, a stabilizer is generally added to the vinyl chloride resin. As this stabilizer, for example, Ba-Zn type,
General stabilizers used for vinyl chloride resins, such as Na-Zn type and Sn type, can be used.

The amount of the stabilizer added is about 0.5 to 10 parts by weight, preferably about 2 to 5 parts by weight, per 100 parts by weight of the vinyl chloride resin.

Furthermore, this vinyl chloride resin layer contains other flame retardants such as antimony trioxide, antimony pentoxide,
Zinc borate, molybdenum oxide, etc. can also be used in combination.

Furthermore, the vinyl chloride resin contains processing aids, pigments,
Ultraviolet absorbers, antistatic agents, antiaging agents, etc. can also be used.

Furthermore, if this plasticized vinyl chloride resin layer is pasted, a diluting solvent such as mineral spirit may also be used.

The method of laminating this vinyl chloride resin layer includes, for example, general coating using a doctor coat, roll coater 1, or air knife as in the case of laminating a coat layer on an inorganic base paper, as well as a rotary screen method. can be adopted.

Note that the flame-retardant vinyl wallpaper thus laminated can also have a design applied to its surface by gravure printing, embossing, etc., if necessary.

〔Example〕

Examples of the present invention will be described in detail below, but the present invention is not limited to these examples.

Example 1 Sheet of 70% by weight of aluminum hydroxide and wood pulp (NB
KP) 30% by weight of inorganic base paper (manufactured by Toyo Valp Industries, Cosmo W, Tsubo 1120 g/r)
rf) on one side of the organic binder ethylene-vinyl chloride emulsion 5E-1010 (Sumitomo Chemical Co., Ltd.
100 parts by weight of aluminum hydroxide C-301 (manufactured by Sumitomo Chemical Co., Ltd.), which is an inorganic compound powder, was added to 100 parts by weight (solid content: 50% by weight) and stirred to form a coating layer using a doctor. Using a knife, the coating was applied so that the amount of adhesion upon drying was 20 g/rrr to obtain a base sheet.

Vinyl paste formulation (parts by weight) Vinyl chloride resin (P=1,050) 100 dioctyl phthalate 40 octyl diphenyl phosphate 20 calcium carbonate
50 aluminum hydroxide
50 stabilizer (manufactured by Kyodo Yakuhin ■, F80A8)
3 Foaming agent (manufactured by Tenba Kagaku, AZ-H) 2
200g of vinyl chloride resin paste consisting of the above formulation was applied onto the coating layer of the base sheet using a doctor blade.
/% and heat treated at a temperature of 210°C, then the combustion performance was tested.

Note that the performance evaluation at this time is as follows.

(a) Test method: A surface test prescribed in Ministry of Construction Notification No. 1828 was conducted.

(b) Test method: Is the sheet made of starch glue 20g/rr?
(solid content equivalent) was used to adhere to a perlite board.

(c) Base material, thickness 1c specified in JIS A3413
m(7)0.8 asbestos perlite board was used.

As a result, the temperature time area is 0, the smoke generation coefficient is 26,
It passed the test as a noncombustible material with a smoke emission coefficient of 30 or less, and also had improved printability and opacity because a coating layer was laminated on the base sheet layer.

Example 2 Flame-retardant vinyl wallpaper was laminated in the same manner as in Example 1, except that coating layers were laminated on both sides of the inorganic base paper to provide a base sheet, and then the same combustion performance test was conducted. .

As a result, the temperature time area is 0, the smoke generation coefficient is 24,
It passed the test as a noncombustible material with a smoking coefficient of 30 or less, and also had improved printability and opacity because a coating layer was laminated on the base sheet layer.

Example 3 SBR latex (
100 parts by weight of solids (solid content: 30% by weight) were used, and the inorganic compounds of this coating layer were 100 parts by weight of calcium carbonate, 0.5 parts by weight of polyacrylate, and 0.7 parts by weight of carboxymethyl cellulose (CMC). Flame-retardant vinyl wallpaper was laminated in the same manner as in Example 1, except that the mixture was used, and then the same combustion performance test was conducted.

As a result, the temperature time area is O1 smoke coefficient is 26,
Similarly, it passed the test as a noncombustible material, and also had improved printability and opacity because a coating layer was laminated on the base sheet layer.

Example 4 Is the coating layer adhesion amount 50g/rr when dry? Except for the above, flame-retardant vinyl wallpaper was laminated in the same manner as in Example 1, and then the same combustion performance test was conducted.

As a result, the temperature time area is O1 smoke coefficient is 24,
Similarly, it passed the test as a noncombustible material, and also had improved printability and opacity because a coating layer was laminated on the base sheet layer.

Comparative Example 1 Example 1 except that the coating layer was not laminated on the inorganic base paper.
Flame-retardant vinyl wallpaper was laminated in the same manner as above, and then the same combustion performance test was conducted.

As a result, the temperature/time area O1 smoke emission coefficient was 38, failing the nonflammability test, and the printability and opacity were also poor because the coating layer was not laminated.

[Effects of the Invention] Since the present invention is as described above, it is possible to obtain an effect that flame retardancy can be improved, and printability and opacity can also be improved.

Patent applicant: Achilles Corporation Agent Patent Attorney Takashi Shirai

Claims (3)

[Claims] (1) In vinyl wallpaper in which a vinyl chloride resin layer is laminated on a base sheet, this base sheet is an inorganic base paper mainly composed of inorganic compound powder and pulp, and one or both sides of this inorganic base paper is mainly composed of an inorganic compound. A flame-retardant vinyl wallpaper characterized by comprising a coating layer containing an organic binder as a component. (2) The flame-retardant vinyl wallpaper according to claim 1, wherein the inorganic compound powder contains aluminum hydroxide as a main component. (3) The amount of adhesion of the coating layer when dry is 5 to 50 g/m^2
The flame-retardant vinyl wallpaper according to claim 1 or 2.