JP3809931B2 - Paper wallpaper - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a paper wallpaper used as an interior material of a building.
[0002]
[Prior art]
Usually, the wallpaper is dirty and can be replaced when the resident changes. However, when the wallpaper is peeled off, part of the construction adhesive or part of the wallpaper remains on the wall. Then, there was a problem that when the remaining part of the construction adhesive and wallpaper became uneven and a new wallpaper was pasted thereon, irregularities were formed.
[0003]
Further, as a conventional paper wallpaper, there is known a paper in which smooth paper backing is laminated after printing on an upper paper, followed by paper embossing.
However, paper embossing for passing paper between male roll and the female roll, there is no elongation of the paper, there is a problem that the paper cracks likely to occur, in the worst case the paper strip In some cases, it was cut and deep embossing could not be applied with paper embossing.
[0004]
In general, in order to paste wallpaper on the wall, the wallpaper is folded with the adhesive applied to the back side of the wallpaper, and the wallpaper absorbs moisture from the adhesive to some extent, and the wallpaper is pasted when it becomes soft. The method is taken.
However, since the paper wallpaper has high moisture permeability, there is a drawback that the drying speed of the construction adhesive is fast and the workable time is short.
[0005]
By pasting a film of ethylene-polyvinyl alcohol on the surface of the paper wallpaper, it was possible to extend the workable time. However, there is a problem that the wallpaper curls due to the difference in elongation between the ethylene-polyvinyl alcohol layer and the paper when the wallpaper absorbs moisture.
[0006]
[Problems to be solved by the invention]
Due to the above-mentioned problems, conventional wallpaper is easy to pick up unevenness during construction, and is a wallpaper that tends to cause joint opening after construction, paper wallpaper with poor unevenness, and curl was there.
[0007]
[Means for Solving the Problems]
The paper wallpaper of the present invention is made in order to solve the above-described problem, and has an upper paper, a backing paper, an adhesive that bonds the upper paper and the backing paper, and an aqueous adhesive to the adhesive layer. The weight ratio of the non-volatile content of the ethylene-vinyl acetate copolymer resin emulsion or / and the vinyl acetate emulsion contained in the aqueous adhesive and the non-volatile content of the petroleum wax emulsion is 30/70 to 90/10. A paper wallpaper characterized in that crepe paper is used as the backing paper, and the direction of wrinkle of the crepe paper is adjusted to the width direction of the paper wallpaper to be manufactured, and in the paper wallpaper having the upper paper, the middle paper, and the backing paper A water-based adhesive is used for the adhesive layer for bonding the upper paper and the inner paper and / or the adhesive layer for bonding the inner paper and the backing paper, and the ethylene-vinyl acetate copolymer resin emulsion contained in the water-based adhesive or / And vinyl acetate Le is the weight ratio of the nonvolatile content of the non-volatile content and petroleum wax emulsions 30 / 70-90 / 10 emulsion, and using crepe paper as the backing paper, the direction of the crepe paper wrinkles, the width of the paper wallpaper manufactured The present invention relates to a method for producing a paper wallpaper, characterized in that the paper wallpaper is characterized by matching the direction, and after embossing the upper paper and the middle paper, the paper is embossed with moisture remaining and the backing paper is pasted after drying. Is.
[0008]
The use of crepe paper as the backing paper used in the paper wallpaper of the present invention is because the crepe paper has wrinkles, so it is difficult to pick up uneven walls and has excellent dimensional stability. It is because it is very excellent.
The paper wallpaper of the present invention comprises at least two sheets of upper paper and backing paper, and preferably comprises three sheets of upper paper, middle paper, and backing paper.
[0009]
For the upper paper, the middle paper, and the like, paper generally used for paper wallpaper can be used. However, paper having a basis weight of 40 to 200 g / m ² is preferable from the viewpoint of cost. Furthermore, when different types and basis weights are used for the upper paper, the middle paper, and the backing paper, they can be used more suitably. In addition, it is more preferable that the basis weight of the middle paper is smaller than that of the upper paper in terms of cost.
In addition, when flame-retardant paper is used for the upper paper and the middle paper, it can be made a flame-retardant paper wallpaper, and when flame-treated paper is used for the crepe paper as the backing paper, the flame retardancy is further improved. It is improved and more preferable.
[0010]
In the paper wallpaper of the present invention, a crepe paper that is generally used can be used as the crepe paper, but a crepe paper having a basis weight of 40 to 150 g / m ² is preferable from the viewpoint of cost, and the depth of wrinkles 0.1 to 0.3 mm is more preferable because it is more difficult to pick up unevenness and has good workability.
[0011]
As the adhesive that can be used for the paper wallpaper of the present invention, commonly used adhesives can be used. Among them, the water-based adhesive is well used with paper, and therefore, the water-based adhesive can be preferably used.
Examples of water-based adhesives include glues such as glue and starch, vinyl acetate polymers such as polyvinyl alcohol, polyvinyl acetate, and ethylene-vinyl acetate copolymers; maleic anhydride copolymers; methyl polyacrylate, Polyethyl acrylate, polyoctyl acrylate, ethylene-acrylic acid copolymer, ethylene-methyl acrylate copolymer, ethylene-ethyl acrylate copolymer, ethylene-methyl methacrylate copolymer, ethylene-ethyl methacrylate Copolymers, acrylic-styrene copolymers, water-soluble polyester polymers, emulsion type adhesives such as petroleum wax, and rubbers such as natural rubber, styrene-butadiene rubber, nitrile rubber, chloroprene rubber, isoprene rubber, butadiene rubber Examples include latex adhesives. These water-based adhesives may be used alone or in combination of two or more.
Among these, an emulsion type adhesive is preferable, and an ethylene-vinyl acetate emulsion and / or a mixture of a polyvinyl acetate emulsion and a petroleum wax emulsion is particularly preferable.
[0012]
From the viewpoint of workability and the like, the adhesive used for the paper wallpaper of the present invention is preferably an adhesive in which the above aqueous adhesive is blended in at least one of the adhesive layers, and ethylene is used as the aqueous adhesive. -Mixed adhesive of vinyl acetate copolymer resin emulsion and petroleum wax emulsion, Mixed adhesive of polyvinyl acetate emulsion and petroleum wax emulsion, Mixed adhesive of ethylene-vinyl acetate copolymer resin emulsion and polyvinyl acetate emulsion, petroleum wax emulsion Is preferably used.
[0013]
In the case of using an ethylene-vinyl acetate copolymer resin emulsion and / or a mixed adhesive of a polyvinyl acetate emulsion and a petroleum wax emulsion, the nonvolatile content of the ethylene-vinyl acetate copolymer resin emulsion and / or vinyl acetate emulsion is used. An adhesive having a weight ratio of non-volatile content of the petroleum wax emulsion of 30/70 to 90/10 can be suitably used. The non-volatile content of the ethylene-vinyl acetate copolymer resin emulsion and / or vinyl acetate emulsion and the petroleum wax emulsion An adhesive having a non-volatile content weight ratio of 40/60 to 85/15 can be more preferably used.
[0014]
In addition, various additives such as thickeners, thickeners, drying retardants, wetting agents, fillers, dispersants, flame retardants, fungicides, antibacterial agents may be added to the adhesive as necessary. good.
As the thickener, commonly used thickeners such as polyacrylic acid soda, hydroxycellulose, hydroxyethylcellulose, carboxymethylcellulose, polyvinyl alcohol and the like can be used.
As the filler, generally used fillers such as aluminum hydroxide, magnesium hydroxide, barium hydroxide, calcium carbonate, magnesium carbonate, clay, talc, and silica sand can be used.
As the drying retardant, commonly used fillers such as ethylene glycol, diethylene glycol, polyethylene glycol, urea and the like can be used.
As the viscosity reducer, a commonly used viscosity reducer such as water can be used.
As the dispersant, commonly used dispersants such as various surfactants can be used.
Flame retardants include phosphate esters such as tricresyl phosphate (TCP), tris (β-chloroethyl) phosphate, tris (dichloropropyl) phosphate, tris (dibromopropyl) phosphate, bromophosphate; chlorinated paraffin, tetrabromide Halogenated hydrocarbons such as ethylene; Guanidine salts such as guanidine phosphate, guanidine tetraborate, and guanidine sulfanate; inorganic difficulties such as zinc borate, magnesium hydroxide, aluminum hydroxide, antimony trioxide, zinc molybdate, and molybdenum oxide Reactive flame retardants such as phosphorus-containing polyol, bromine-containing polyol, tetrachlorophthalic anhydride, tetrabromide phthalic anhydride, etc. can be used. Of these, guanidine salts are preferably used from the viewpoint of compatibility with the emulsion.
As the fungicide and antibacterial agent, the fungicide and antibacterial agent usually used for wallpaper can be used.
[0015]
Further, the amount of adhesive applied, in the form of wet during adhesive ^{application, 5g / m 2 ~80g / m} 2, preferably ^{10g / m 2 ~60g / m 2} , more preferably 15 g / m ² It is good for the ~50g / m ^2.
Further, in the state of dry after the adhesive ^{dried, 2g / m 2 ~48g / m} 2, preferably ^{4g / m 2 ~36g / m 2} , more preferably that a 6g / m ² ~30g / m ² good.
[0016]
As a method of applying the adhesive, a method using various coaters such as a doctor knife coater, a roll coater, an air knife coater, a comma doctor knife coater, a reverse roll coater, or various printing machines such as a rotary screen printing machine and a gravure printing machine is used. It is done.
[0017]
In the paper wallpaper of the present invention, when the direction of the wrinkle of the crepe paper that is the backing paper is matched to the width direction of the paper wallpaper to be produced, there is little expansion and contraction in the width direction after opening the wallpaper, and the opening and pushing up It can prevent and can be used conveniently.
[0018]
In order to print on the paper wallpaper of the present invention, printing can be performed by a rotary screen printer, a gravure printer, an offset printer, or the like.
Printing may be performed on the upper paper in advance, or may be performed after the upper paper and the middle paper are bonded together or after the backing paper is further bonded.
In addition, the surface of the paper wallpaper of the present invention can be subjected to water repellent treatment and / or flame retardant treatment. The flame retardant described above can also be used for the surface flame retardant treatment.
[0019]
In the paper wallpaper of the present invention, embossing can be applied only to the upper paper, the upper paper bonded to the middle paper, or the upper paper bonded to the middle paper and the backing paper.
When embossing is performed, a sharper and deeper embossing can be performed by paper embossing using a male embossing roll and a female embossing roll than when performing normal embossing.
When the paper embossing is performed, it is preferable that paper embossing is performed when the paper to be paper embossed (including paper laminated with an adhesive) is moistened, so that the paper is not easily torn or torn. .
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the paper wallpaper of the present invention will be described with reference to the drawings.
FIG. 1 is a partially enlarged sectional view showing an embodiment of the paper wallpaper of the present invention. In each reference numeral, 1 represents a paper wallpaper, 11 represents an upper paper, 12 represents an adhesive layer for bonding the upper paper and the backing paper, 13 represents a backing paper, and 14 represents a printing layer.
The paper wallpaper 1 is obtained by applying an adhesive to the back surface of the top paper 11 and / or the surface of the backing paper 13 by the above-described means and laminating them.
Further, printing can be performed by rotary screen printing, screen printing, gravure printing, offset printing, or the like.
[0021]
FIG. 2 is also a partially enlarged sectional view showing an embodiment of the paper wallpaper of the present invention. When the upper paper 21 and the inner paper 23 are bonded using an adhesive as shown in FIG. 2 and the paper embossing is performed while the upper paper and the inner paper are wet by the moisture of the adhesive, the deep embossing is performed. Also preferred is that the paper does not tear.
[0022]
[Experimental example]
[Experimental Examples 1-7]
As Experimental Example 1, blending 50 parts by weight of petroleum wax emulsion in terms of non-volatile content with 50 parts by weight of non-volatile content ethylene-vinyl acetate copolymer resin emulsion on a roll paper (basis weight 55 g / m ² ). The applied water-based adhesive was applied at 30 g / m ² , and an upper paper (basis weight 70 g / m ² ) that had been subjected to gravure printing was pasted together.
Then, deep paper embossing was performed in a moist state and dried in a drying furnace at 100 ° C.
Furthermore, on a crepe paper (basis weight of 60 g / m ² ) as a backing paper, a petroleum coater emulsion of 20 parts by weight in terms of nonvolatile matter was added to an ethylene-vinyl acetate copolymer resin emulsion in terms of nonvolatile matter by a roll coater. 60 g / m ^{2 of the} blended water-based adhesive was applied, and the above-mentioned upper paper and intermediate paper were pasted together. The obtained paper wallpaper was excellent in unevenness, and it was difficult to pick up unevenness during construction. Moreover, when 140 g / m < ² > (wet) of application | coating adhesives (Yazawa Chemical: Wallbond 100) were apply | coated and folded, and the dry condition of the construction adhesives was evaluated, the construction possible time was 3.5 hours. Furthermore, the joint opening after construction was not seen.
As an experimental example 2, subjected to a shallow paper embossed on paper (basis weight 70 g / m ^2), crepe paper (basis weight 60 g / m ²⁾ surface nonvolatile content converted to non-volatile component in terms of 60 parts by weight of vinyl acetate emulsion of An aqueous adhesive containing 40 parts by weight of a petroleum wax emulsion was applied at 60 g / m ² , and the upper paper and backing paper were laminated to obtain a paper wallpaper.
The obtained paper wallpaper was inferior to the unevenness as compared with Experimental Example 1, but it was difficult to pick up unevenness during construction, and the workable time was 3 hours. Furthermore, the joint opening after construction was not seen.
As Experimental Example 3, paper wallpaper was prepared in the same manner as in Experimental Example 1, except that an ethylene-methacrylic acid copolymer emulsion was used as the adhesive for bonding the backing paper and the inner paper and the backing paper. It was created.
The obtained paper wallpaper was excellent in unevenness, it was difficult to pick up unevenness during construction, and the workable time was 2.5 hours. Moreover, the joint opening after construction was not seen.
As Experimental Example 4, the upper paper was embossed, and the upper paper and the crepe paper as the backing paper were bonded with an ethylene-methyl acrylate copolymer emulsion adhesive to obtain a paper wallpaper. The obtained paper wallpaper was inferior to the texture of the paper wallpaper obtained in Experimental Examples 1 and 3, but the workable time was 2 hours. Moreover, the joint opening after construction was not seen.
As Experimental Example 5, a paper wallpaper was prepared in the same manner as in Experimental Example 1, except that the upper paper and the inner paper were bonded, sufficiently dried in a drying oven at 100 ° C., and then subjected to shallow paper embossing. did.
Although the obtained paper wallpaper was inferior in unevenness to Experimental Examples 1 and 3, it was difficult to pick up unevenness during construction, and the workable time was 3 hours. Moreover, the joint opening after construction was not seen.
As Experimental Example 6, except that the upper paper and the middle paper and the middle paper and the backing paper were bonded using an adhesive such that the vinyl acetate emulsion had a nonvolatile content of 20 parts by weight and the petroleum wax had a nonvolatile content of 80 parts by weight. Obtained a paper wallpaper in the same manner as in Experimental Example 1.
When the paper wallpaper obtained is paper embossed on the paper that is bonded to the upper paper and the middle paper, the adhesive strength between the upper paper and the middle paper is weaker than that of Experimental Example 1, and the paper embossing is difficult to perform. Yes, the workable time was about 1.5 hours. However, the wallpaper of Experimental Example 6 was excellent in unevenness, was difficult to pick up unevenness during construction, and the joint opening after construction was not seen.
As Experimental Example 7, a paper wallpaper was prepared in the same manner as in Experimental Example 1, except that ordinary paper was used as the backing paper.
The obtained paper wallpaper was excellent in unevenness, and the workable time was 3.5 hours. However, when it was constructed, irregularities appeared due to picking up uneven walls. Moreover, the opening of the joint part was seen 1 month after construction.
[0023]
【The invention's effect】
In the present invention, the use of crepe paper as the backing paper makes it possible to obtain a paper wallpaper that is difficult to pick up uneven walls during wallpaper construction and that has excellent dimensional stability.
Moreover, it can be set as the wallpaper which has moderate water vapor transmission rate by using a water-system adhesive agent as an adhesive agent for adhere | attaching paper.
Furthermore, by embossing the paper with the upper paper and the inner paper moistened, the embossing can be performed without causing tearing or tearing of the paper even if deep embossing is performed. .
[Brief description of the drawings]
FIG. 1 shows a partially enlarged cross-sectional view of an embodiment of a paper wallpaper of the present invention.
FIG. 2 shows a partially enlarged sectional view of an embodiment of the paper wallpaper of the present invention.
[Explanation of symbols]
1, 2 ... Paper wallpaper 11, 21 ... Upper paper 12 ... Adhesive layer 22 for bonding the upper paper and backing paper ... Adhesive layer 23... Intermediate paper 24... Adhesive layer 13, 25... Adhesive layer 13, 25.

Claims (4)

It has an upper paper, backing paper, an adhesive layer that adheres the upper paper and the backing paper, an aqueous adhesive layer is used for the adhesive layer, and an ethylene-vinyl acetate copolymer resin emulsion contained in the aqueous adhesive or / And the weight ratio of the non-volatile content of the vinyl acetate emulsion and the non-volatile content of the petroleum wax emulsion is 30/70 to 90/10, the crepe paper is used as the backing paper , and the direction of the wrinkle of the crepe paper is produced. Paper wallpaper characterized by matching to the width direction. In a paper wallpaper having a top paper, a middle paper, and a backing paper, a water-based adhesive is used in the adhesive layer that bonds the top paper and the middle paper and / or the adhesive layer that bonds the middle paper and the backing paper. The weight ratio of the nonvolatile content of the ethylene-vinyl acetate copolymer resin emulsion or / and the vinyl acetate emulsion contained in the petroleum wax emulsion is 30/70 to 90/10 , and crepe paper is used as the backing paper, A paper wallpaper characterized by matching the direction of wrinkles of crepe paper with the width direction of the paper wallpaper to be produced.    The paper wallpaper according to claim 1 or 2, wherein the crepe paper has a wrinkle depth of 0.1 to 0.3 mm. The paper wallpaper manufacturing method according to claim 2 or 3, wherein after the upper paper and the middle paper are bonded together, paper embossing is performed in a state where moisture remains, and the backing paper is bonded after drying.

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