JP3967732B2 - Wallpaper with glue - Google Patents

Description

The present invention relates to a wallpaper with glue. More specifically, the present invention relates to an existing wallpaper provided with a decorative layer made of a synthetic resin such as vinyl chloride, paper, woven fabric, metal foil, or an inorganic material on the surface side, or a wallpaper with glue that can be stuck on a bran paper.
The purpose of the present invention is that the paste has excellent drying resistance and stability over time, so even if it is stored for a long time, the paste does not dry or deteriorate, and even an amateur can easily put it on the existing wallpaper. An object of the present invention is to provide a wallpaper with glue that can be applied in layers.

Conventionally, when redesigning a wall, after removing all layers of the wallpaper already affixed to the wall (hereinafter referred to as existing wallpaper) or only the decorative layer of the existing wallpaper, a new wallpaper is applied to the wall. I was stuck.
Depending on the type of wall material, the type of adhesive used for pasting existing wallpaper, and the type of existing wallpaper material, this backing method can leave the backing paper on the back of the wallpaper when it is peeled off. was there. If a new wallpaper is applied in such a state, the wallpaper will be applied on the mottled surface of the wall surface and the paper layer, so the shape of the backing paper left behind after the application appears. In some cases, the original shape could not be expressed on the surface of the new wallpaper. Therefore, when the backing paper is left untreated, the remaining backing paper has to be removed with a wallpaper stripper or the like.
In addition, depending on the type of existing wallpaper (such as the foaming condition of the makeup layer), the wallpaper may be torn off when attempting to remove it. In such a wallpaper, there is a problem that it takes a lot of labor and time because it is necessary to turn the wallpaper by hand or scrape it off with a scraper or the like.

On the other hand, the present applicants have disclosed, in Patent Document 1, a wallpaper with glue that can be pasted on an existing wallpaper without bothering the existing wallpaper.
The glue-attached wallpaper that can be pasted on the existing wallpaper described in Patent Document 1 is a wallpaper body composed of a decorative layer and a backing paper layer provided on the back surface thereof, and a glue provided on the back surface side of the wallpaper body. A glued wallpaper comprising a layer and a release sheet provided on the back side of the glue layer, wherein the glue comprises an adhesive active ingredient comprising a synthetic resin and starch that can be used as an adhesive, and moisture In addition, the adhesive active ingredient occupies 10 to 60% by weight of the total glue component, and the glued wallpaper is sealed with a packaging material that seals and stores the glued wallpaper. It is a wallpaper with glue that can be overlaid on an existing wallpaper characterized by being packaged.
Specific examples of the synthetic resin that can be used as an adhesive include an ethylene vinyl acetate copolymer.

JP 2002-38396 A

However, although the wallpaper with glue described in Patent Document 1 can be overlaid on an existing wallpaper provided with a decorative layer, it has the following problems.
The glue used in the wallpaper with glue described in Patent Document 1 contains an ethylene-vinyl acetate copolymer and starch as an adhesive active ingredient. The paste containing this adhesive active ingredient was very easy to dry. For this reason, it has been essential to add a water retention agent, but even when a water retention agent is added, the paste may be dried when stored for a long period of time.
In addition, the paste containing an active adhesive component composed of an ethylene vinyl acetate copolymer and starch easily deteriorated when stored for a long period of time, such as an increase in viscosity, and was inferior in stability of the paste.

When pasting and pasting the wallpaper with glue described in Patent Document 1 on the existing wallpaper, first, after partially peeling the release sheet of the wallpaper with glue, the wallpaper with glue across the lateral direction of the existing wallpaper on the upper end of the existing wallpaper Paste. Next, the wallpaper with glue is pasted in the downward direction of the existing wallpaper while gradually peeling the release sheet.
Since the wallpaper with glue described in Patent Document 1 has poor separation between the release sheet and the adhesive layer, a large force is required to peel off the release sheet. For this reason, when pasting the wallpaper with glue toward the lower direction of the existing wallpaper, when the release sheet is pulled to peel off the release sheet, the part previously pasted to the upper end of the existing wallpaper will be peeled off In some cases, the work efficiency was reduced.

The present invention has been made to solve the above-described problems, and the invention according to claim 1 is directed to a wallpaper body, a glue layer provided on the back side of the wallpaper body, and the glue layer. And a release sheet provided on the back side, wherein the glue contains a cationic acrylic resin , starch and water.
The invention according to claim 2 relates to the wallpaper with glue according to claim 1 , wherein the glue further contains a thickener .
The invention according to claim 3 relates to the wallpaper with glue according to claim 1 or 2 , wherein the weight ratio of the starch to the resin is 0.5: 9.5 to 9.5: 0.5. .
The invention according to claim 4 relates to the wallpaper with glue according to any one of claims 1 to 3 , wherein the resin and starch occupy 10 to 60% by weight of the total amount of glue components.
The invention according to claim 5 relates to the wallpaper with glue according to any one of claims 1 to 4 , wherein the wallpaper with glue is hermetically packaged with a packaging material.

According to the first and second aspects of the present invention, even an amateur can easily and surely apply and paste on existing wallpaper or bran paper. Moreover, since the paste is excellent in drying resistance and stability over time, it can be stored for a long time. Moreover, since it is excellent in the peeling characteristic of a glue layer and a peeling sheet, work efficiency can be improved significantly. Even when stored for a long time, drying of the paste can be prevented.
According to the inventions according to claims 3 to 5, it is possible to more easily and reliably overlap the wallpaper on the existing wallpaper.

The glued wallpaper according to the present invention will be described with reference to the drawings.
FIG. 1 is a partial cross-sectional view showing the pasted wallpaper according to the present invention in a hermetically sealed state. 2 is a cross-sectional view of the wallpaper with glue shown in FIG.

First, the wallpaper with glue according to the first embodiment of the present invention will be described.
The wallpaper with glue (1) according to the first embodiment of the present invention includes a wallpaper body (10), a glue layer (4) provided on the back side of the wallpaper body (10), and the glue layer (4). And a release sheet (6) provided on the back side.

The wallpaper body (10) includes a decorative layer (3) and a backing paper layer (2) provided on the back side of the decorative layer (3).
The material of the decorative layer (3) is not particularly limited as long as it is a material usually used as wallpaper. For example, PVC (polyvinyl chloride), PE (polyethylene), PP (polypropylene), EVA (ethylene-vinyl acetate) Copolymers), synthetic resins such as acrylic, paper, woven fabric, metal foil such as aluminum, wood such as cork, and inorganic substances such as mica. Moreover, fibers such as kenaf, polyester (regenerated polyester), cotton, recycled paper, waste glass, beer lees, bamboo, diatomaceous earth, calcium carbonate, and the like can also be exemplified.
However, when the decorative layer (3) is made of a water-absorbing material, it is necessary to perform a treatment that does not absorb the moisture in the glue layer (4).

A surface film (5) may be laminated on the surface of the decorative layer (3) as shown in FIG. The surface film (5) can prevent the surface of the decorative layer (3) from being soiled, and can reinforce the decorative layer (3) to make it difficult to break.
The material of the surface film (5) is not particularly limited as long as the purpose can be achieved, and examples thereof include EVOH (ethylene vinyl alcohol copolymer resin film), acrylic film, and vinyl chloride film.
The surface of the decorative layer (3) may be processed flat, but the surface is deeply uneven and / or highly foamed so that the unevenness formed on the surface of the existing wallpaper does not appear on the surface of the decorative layer (3). May be given. In the case of performing this uneven processing, it is preferable that the step between the concave bottom surface and the convex top surface is 0.01 to 0.5 mm.

  A backing paper layer (2) is provided on the back surface of the decorative layer (3). The backing paper layer (2) is provided for stably fixing the adhesive layer (4) and preventing the wall base from seeping through and affecting the decorative layer. The raw material of the backing paper layer (2) is not particularly limited, and can be composed of, for example, natural paper, synthetic paper, mixed paper nonwoven fabric or the like.

The glue layer (4) is applied to the back side of the backing paper layer (2), that is, the side opposite to the decorative layer (3).
The adhesive layer (4) contains a cationic resin, starch, and water.

The cationic resin and starch are active ingredients for bonding the wallpaper (1) to the wall surface or the surface of the existing wallpaper.
The total content of the cationic resin and starch is not particularly limited, but is 10 to 60% by weight, preferably 14 to 30% by weight, based on the total amount of glue. If the total content of the cationic resin and starch is less than 10% by weight, sufficient adhesive force cannot be obtained, which causes the wallpaper (1) to peel off. On the other hand, when the content of the cationic resin and starch exceeds 60% by weight, workability and long-term storage at the time of paste coating are lowered depending on the weight ratio of the starch and the cationic resin.

The weight ratio between the starch and the cationic resin is not particularly limited, but is 0.5: 9.5 to 9.5: 0.5, preferably 3.0: 7.0 to 5.0: 5.0. .
If the weight ratio of starch to cationic resin is less than 0.5 / 9.5, the time until the paste dries may be too short. On the other hand, if the weight ratio of starch to cationic resin exceeds 9.5 / 0.5, the adhesive force to the synthetic resin layer such as vinyl chloride as the base of the sticking may be weakened, and wallpaper (1 ) May be peeled off. Thus, starch and a cationic resin can compensate the fault which each other has by mix | blending in the above-mentioned appropriate ratio.

  Any cationic resin can be used as long as it is a cationic resin that can be used as a component of the adhesive. Examples of the cationic resin include a cationic acrylic resin and a cationic vinyl acetate resin. In the present invention, it is preferable to use a cationic acrylic resin. Examples of cationic acrylic resins include styrene / alkyl acrylate / alkyl methacrylate copolymers, alkyl acrylate / alkyl methacrylate copolymers, acrylic silicone resins, vinyl acetate acrylic copolymer resins, and the like. .

A water retention agent can be mix | blended with glue as needed.
When a water retention agent is blended, it is possible to prevent the glue from being dried by preventing the glue from being dried and to prevent the glue from being dried for a long period of time when the sticking fails and the wallpaper is pasted again.
Examples of the water retention agent include organic acid salts such as sodium lactate, sodium citrate, and sodium acetate, and high-boiling water-soluble organic solvents such as ethylene glycol, propylene glycol, glycerin, diglycerin, and polyethylene glycol.

When the water retention agent is blended, the content of the water retention agent is not particularly limited, but it is preferably 0.5 to 5% by weight, preferably 2 to 3% by weight, based on the total components of the paste. When the blending amount of the water retention agent is less than 0.5% by weight, the water retention effect is low, so the effect due to the blending of the water retention agent may not be obtained. When it exceeds 5% by weight, drying after the wallpaper is pasted becomes slow, which may cause peeling or poor adhesion.
In the present invention, for the purpose of enhancing the drying resistance of the glue, a water retention agent can be added to the glue, but the water retention agent is not an essential component, and even when not containing a water retention agent, The glue used in the present invention has sufficient drying resistance.

  Furthermore, a thickener, an antiseptic | preservative, an antifungal agent, etc. can be added to glue as needed.

The glue is applied to the back side of the wallpaper body (10). The coating amount of the adhesive is not particularly limited, preferably be a 100 to 400 g / ^{m 2,} it is more preferably set to 200-30Og / ^{m 2.}
If the amount of paste applied is less than 100 g / m ^{2, the} amount of paste will be too thin because the amount applied will be small. As a result, when there is unevenness in the pasting base, the adhesive does not spread sufficiently in the concave portion, which may cause peeling or poor adhesion. On the other hand, if the coating amount exceeds 400 g / m ² , the coating amount is so large that the paste sticks out of the wallpaper body (10) or is stored in the state where the wallpaper (1) is erected at the time of gluing with a glue coating machine. The glue may be dripping when you are. In addition, there is a risk of glue sticking out from the edge of the wallpaper when the wallpaper is applied. As described above, when the amount of glue applied deviates from the range of 100 to 400 g / m ² , the wallpaper (1) may impair the commercial value.

The viscosity of the paste is not particularly limited, but is 5000 to 50000 mPa · s, preferably 10,000 to 25000 mPa · s.
When the viscosity of the glue is less than 5000 mPa · s, when the glue is applied to the back side of the wallpaper main body (10) with a glue coating machine, the amount of glue applied decreases due to the low viscosity of the glue, causing peeling or poor adhesion It may cause. Moreover, even when a desired glue can be applied, there is a possibility that the wallpaper sticking work may be hindered due to insufficient viscosity of the glue, resulting in peeling or poor adhesion.
When the viscosity of the paste exceeds 50000 mPa · s, the paste is applied to the end of the wallpaper body (10) due to the high viscosity of the glue when the paste is applied to the back side of the wallpaper body (10) by the glue coating machine. It may not be possible to work.
The viscosity of the paste in the present invention is measured under the following conditions.
Viscometer: BH type viscometer Rotor: No. 7
Number of revolutions: 20 revolutions Temperature: 23 ° C
Humidity: 50%

A release sheet (6) is adhered to the back side of the adhesive layer (4), that is, the surface opposite to the backing paper layer (2). This release sheet (6) prevents the moisture of the glue from evaporating, and when the wallpaper (1) with glue is wound and stored (see FIG. 1), the glue is applied to the decorative layer (3) and the surface film. (5) is provided to prevent contact and adhesion.
The type of release sheet (6) is not particularly limited. For example, CPP (unstretched polypropylene), OPP (biaxially stretched polypropylene), LDPE (low density polyethylene), HDPE (high density polyethylene), PVDC (polyvinylidene chloride) , Release sheets made of ONY (stretched nylon), PET (polyethylene terephthalate), PVC, PC (polycarbonate), PVA (polyvinyl alcohol), EVOH, PT (cellophane), etc., and release sheets made by laminating two or more layers of these materials For example, KON (polyvinylidene chloride coated nylon) made of PVDC and ONY (stretched nylon), KT (polyvinylidene chloride coated cellophane) made of PVDC and PT, KOP (polyvinylidene chloride coated biaxially stretched) of PVDC and OPP Poly Propylene), it may be employed KPET consisting PVDC and PET (polyvinylidene chloride-coated polyethylene terephthalate). In addition, a ceramic vapor deposition film obtained by vapor-depositing ceramics on PET and an aluminum vapor deposition film obtained by vapor-depositing aluminum on PET can also be employed.
When a release sheet made of a material having a low water vapor transmission rate is used for the release sheet (6), moisture evaporation of the glue can be further prevented, and drying of the glue can be more reliably prevented. Therefore, among the release sheets described above, a release sheet made of PVDC, a ceramic vapor-deposited film, or an aluminum vapor-deposited film can be most preferably used.

The peeling force required when peeling the release sheet (6) from the adhesive layer (4) is not particularly limited, but is 0.03 to 0.6 N / 50 mm, preferably 0.1 to 0.3 N / 50 mm. Is done. When it is less than 0.03 N / 50 mm, the release sheet (6) may be peeled off from the glue layer (4) when storing or transferring the wallpaper with glue (1). If it exceeds 0.6 N / 50 mm, the separability of the adhesive layer (4) and the release sheet (6) is deteriorated, so that the working efficiency is lowered.
In order to adjust the peeling force within the above-described range, for example, a release sheet (6) made of a material taking into consideration the peelability from the glue may be selected. Further, depending on the material of the release sheet (6), a release sheet (6) coated with silicon or the like and subjected to a release treatment may be used. Further, the peelability may be adjusted by adjusting the viscosity of the glue or the amount of glue applied.

The entire wallpaper (1) with glue may be hermetically packaged with the packaging material (7).
When the wallpaper with glue (1) is hermetically wrapped with the packaging material (7), it is wound or folded into a compact state as shown in FIG. The package should be sealed.

The packaging material (7) is preferably a packaging material having a considerably low oxygen permeability and moisture permeability, that is, a high barrier property. Specifically, oxygen and humidity composed of a film having an oxygen permeability (ml / m ² · atm · 24 hrs) of 1.5 or less and a water vapor permeability (g / m ² · 24 hrs) of 1.5 or less A highly barrier packaging material (7) that is difficult to permeate is preferable.
However, it is not always necessary to use a high barrier material for the packaging material (7) used in the present invention. Instead of a high barrier material, a gas barrier film made of KOP, KPET or the like is pasted on a base film made of LLDPE (linear low density polyethylene), etc., and glued with a packaging material molded into a bag The wallpaper (1) may be hermetically packaged. In this case, in order to compensate for the decrease in barrier properties, it is preferable to add a water retention agent to the paste.

In FIG. 1, the code | symbol (11) is a paper tube used as the core material at the time of winding wallpaper (1) with a paste. As shown in FIG. 1 in an enlarged manner, the packaging material (7) is formed on one or both surfaces of a base film (8) made of synthetic resin or the like by chemical vapor deposition or physical vapor deposition, particularly vacuum vapor deposition. The ceramic (9) is coated using Although the material of a base film (8) is not specifically limited, For example, PET can be employ | adopted.
Although the thickness of a base film (8) is not specifically limited, either, for example, it can be 8-18 micrometers. On the other hand, the deposition thickness of the ceramic (9) is not particularly limited, but may be 0.03 to 0.1 μm, for example. In the illustrated example, ceramics (9) is vapor-deposited, but aluminum (not shown) can be vapor-deposited instead.

  Although a base film (8) may be comprised with the material of heat welding property, it may not be so. The heat-weldable material is not particularly limited, and for example, PE, EVA, PP can be adopted.

The shape of the packaging material (7) is not particularly limited as long as the package can be hermetically packaged, but when the base film (8) is made of a heat-weldable material, for example, two sheets The base films (8) and (8) are overlapped and heat-sealed on the three sides to form a so-called pouch-type bag, or the both sides of one base film (8) are folded and the back And a so-called gusseted bag in which the bottom is heat-sealed.
On the other hand, when the base film (8) is composed of a material other than the heat-weldable material, for example, a heat-weldable material is disposed on one surface side, and two of these are overlapped or 1 A sheet can be folded, a heat-weldable material is piled up, and it heat-seals it, and it can be set as a bag. Moreover, an adhesive agent is apply | coated to one surface of a base film (8), this can be piled up and bonded together, or one sheet can be folded and the back part and the bottom part can be bonded together to make a bag. .

The above-mentioned glued wallpaper (1) is hermetically packaged on the packaging material (7) thus formed. That is, after putting the glued wallpaper (1) and the oxygen scavenger (not shown) inside the bag-shaped packaging material (7), the opening of the packaging material (7) is welded or bonded. Seal. As a result, a packaged product of glued wallpaper in which the glued wallpaper (1) is hermetically packaged in a highly barrier packaging material (7) is completed.
Although the kind of oxygen scavenger is not particularly limited, for example, the following oxygen scavenger can be used.
Classified by component, iron-based oxygen scavengers that have a moisture-dependent type that absorbs oxygen only when exposed to high-humidity air and a self-reactive type that absorbs oxygen at the same time when exposed to air, are also self-reactive. Non-ferrous oxygen scavengers having Among the iron-based oxygen scavengers, the moisture-dependent type is generally a high moisture type, and the self-reactive type is generally a low moisture type or a medium to high moisture type. Non-ferrous oxygen scavengers are generally low to high moisture compatible.
If classified according to the deoxygenation rate, there are a fast-acting type with a fast rate and a general type with a normal rate. If classified according to volume, there can be mentioned oxygen scavengers of sizes corresponding to respective volumes of 15 to 3000 ml (oxygen absorption amount).
If classified according to properties, oxygen scavengers that absorb only oxygen, oxygen scavengers that simultaneously absorb oxygen and carbon dioxide, and oxygen scavengers that generate carbon dioxide simultaneously with oxygen absorption can be cited.
In the present invention, among the oxygen scavengers described above, moisture-dependent oxygen scavengers can be preferably used. This is because the moisture-dependent oxygen scavenger is a high moisture-compatible type and has a high A _W (water activity) of 0.85 or more.

The above-mentioned wallpaper with glue (1) has a configuration in which a backing paper layer (2) is provided on the back side of the decorative layer (3), but the wallpaper with glue (1) according to the present invention is not limited to this. For example, as shown in FIG. 3, the glued wallpaper (1) may have a structure in which an impermeable film layer (8) is interposed between the decorative layer (3) and the backing paper layer (2). . In this case, the moisture of the glue provided on the back side of the backing paper layer (2) passes through the backing paper layer (2) to the decorative layer (3) by the water-impermeable film layer (8). Is blocked. Therefore, it is possible to prevent moisture in the paste (4) from evaporating from the decorative layer (3), and to prevent the paste from drying more reliably.
In the case of the structure having the water-impermeable film layer (8) interposed, the moisture of the glue does not pass to the decorative layer (3), so the material of the decorative layer (3) is paper, woven fabric, cork, kenaf, polyester (recycled) Polyester), cotton, recycled paper, waste glass, beer lees, bamboo, diatomaceous earth, calcium carbonate, and the like.

  The material of the water-impermeable film layer is not particularly limited. For example, PE, CPP, OPP, PET, PVC, EVA, PVDC, PVA, EVOH, PC, PS (polystyrene), PAN (polyacrylonitrile), LDPE, MDPE (Medium density polyethylene), HDPE, LLDPE and the like.

  The method of forming the water-impermeable film layer is not particularly limited. For example, co-extrusion lamination such as T-die method and round die method, wet lamination, hot-melt lamination, single, sandwich, tandem extrusion lamination, dry lamination, etc. , Non-solvent laminate, thermal laminate, etc., among which the T-die method is preferably used.

  The glued wallpaper (1) having the water-impermeable film layer (8) is not limited to the above-described configuration. For example, as shown in FIG. 4, a backing paper layer (2 on the back side of the decorative layer (3). ), A water-impermeable film layer (8) is provided on the back side of the backing paper layer (2), and a backing paper layer (2) is further provided on the back side of the water-impermeable film layer (8). It is good also as a structure which apply | coated the adhesive layer (4) to the back surface side of this backing paper layer (2).

Next, the wallpaper with glue according to the second embodiment of the present invention will be described.
The difference between the second embodiment and the first embodiment is that, in the second embodiment, the glue layer contains a synthetic resin, starch, a thickener, and water.

  The synthetic resin is not particularly limited as long as it is an adhesive that can be mixed with starch paste, specifically, a water-soluble or water-dispersed adhesive. Specifically, acrylic resin, EVA, SB (styrene butadiene), vinyl acetate, acrylic styrene, vinyl acetate acrylic, MMA (methyl methacrylate resin), EMA (ethyl methacrylate resin), and the like can be exemplified. More preferably, it is a resin.

The total content of the synthetic resin and starch is not particularly limited, but is preferably the same content as in the first embodiment, specifically, 10 to 60% by weight, preferably 14 to 30% by weight in the total amount of glue. %.
The weight ratio of the starch and the synthetic resin is not particularly limited, but is preferably the same as that of the first embodiment, specifically 0.5: 9.5 to 9.5: 0.5, preferably 3 0.0: 7.0 to 5.0: 5.0.

A thickener is added to further stabilize the viscosity of the paste. The type of thickening agent is not particularly limited, but natural polymer compounds such as flour, gum arabic, guar gum, karaya gum, gelatin, shellac, rosin, cellulose derivatives (carboxymethylcellulose, hydroxyethylcellulose, methylcellulose, ethylcellulose, nitrocellulose, Hydroxypropyl cellulose, crystalline cellulose, etc.), semi-synthetic polymer compounds such as sodium alginate, synthetic polymer compounds such as polyvinyl alcohol, polyvinyl pyrrolidone, sodium polyacrylate, carboxyvinyl polymer, polyvinyl methyl ether, polyamide resin, polyurethane resin It can be illustrated.
Particularly in the present invention, it is preferable to use a polyurethane resin as a thickener.

Although the compounding quantity of a thickener is not specifically limited, 0.05-5.0 weight% is preferable among all the components of glue, Preferably it is 0.1-1.0 weight%.
When the blending amount of the thickener is less than 0.05% by weight, the viscosity of the paste may not be sufficiently stable. When the blending amount of the thickener exceeds 5.0% by weight, the viscosity becomes too high, and workability at the time of paste coating may be lowered.

  The configuration other than that described above is the same as that of the first embodiment, and a description thereof will be omitted.

  Hereinafter, the present invention will be described based on examples. However, the present invention is not limited to these examples.

[Examples 1 to 8]
1. Preparation of glue Starch, cationic acrylic resin (“Boncoat SFC-70”, manufactured by Dainippon Ink and Chemicals, solid content: 40%, MFT: 10 ° C., pH: 4.4), acrylic resin (“Boncoat CG- 8250 ”, manufactured by Dainippon Ink & Chemicals, Inc., solid content: 50%, MFT: 22 ° C., pH 8.3), preservatives, fungicides, and thickeners in water based on the formulation described in Table 1. Dispersion was dissolved to obtain a paste.
As the preservative, an isothiazolone-based composition and bromonitroalcohol-based composition-containing liquid were used, and as the anti-fungal agent, an imidazole aminoformate-containing and isothiazolone-based composition-containing liquid was used. A polyurethane resin was used as the thickener.

2. Manufacture of wallpaper with glue A backing paper layer is disposed on the back side of the decorative layer, and a surface film made of EVA is attached to the front side of the decorative layer, and the above-mentioned glue is applied to the backing paper layer with a weight of 250 g / m ^2. Was applied to form a glue layer. A CPP release sheet having a thickness of 25 μm was adhered to the back side of the adhesive layer to constitute a wallpaper with adhesive. In addition, the shape of the wallpaper with glue was a rectangular shape of 10 cm × 15 cm.

3. High barrier packaging material and packaging of glued wallpaper using this packaging material High barrier packaging of pouch-type bags composed of sheet material obtained by laminating PET film on LLDPE film and depositing ceramics on it Used as material. This packaging material used a tech barrier (trade name) manufactured by Mitsubishi Chemical Kojin Pax Co., Ltd. as a sheet material. In this bag, the above-mentioned glued wallpaper and oxygen absorber are accommodated, and the opening of the bag is heat-sealed to obtain a sealed package of glued wallpaper in which the inside is deoxygenated. Samples of ˜8 were used.

[Comparative Examples 1-4]
1. Preparation of glue It was prepared based on the formulation in Table 2.
2. Production of wallpaper with glue A wallpaper with glue was produced in the same manner as in Examples 1-8.
3. High barrier packaging material and packaging of wallpaper with glue using this packaging material High barrier packaging material was produced in the same procedure as in Examples 1 to 8, and wallpaper with glue was packaged.

[Test Example 1]
The said Examples 1-8 and Comparative Examples 1-4 were stored in the thermostat set to the conditions of temperature 50 degreeC and humidity 5%.
After 1 week, 2 weeks, 3 weeks from the start of storage, each sample is opened, the state of the glue is observed, water retention, workability (ease of sticking) when pasting on existing wallpaper and adhesiveness are as follows Judgment based on the criteria.
The determination results for the examples are shown in Tables 3 and 4. The determination results for the comparative examples are shown in Tables 5 and 6.
The above existing wallpaper comprises a decorative layer made of vinyl chloride resin, a backing paper layer provided on the back side of the decorative layer, and a glue layer provided on the back side of the backing paper layer, and is made of a plywood board. It is affixed to the wall material surface.

<Evaluation criteria: Water retention>
No drying of glue is observed ... 5
Some drying of the glue was observed around the wallpaper, but almost no. 4
Adhesive drying is recognized around the wallpaper ... 3
Adhesive drying is observed on almost the entire surface of the wallpaper ... 2
Adhesive drying is recognized over the entire wallpaper ... 1

<Evaluation criteria; workability and adhesion>
Can be pasted without any problems, and there are no abnormalities such as wall paper peeling or peeling ... 5
Although it was necessary to press the periphery of the wallpaper with a pressing roller, no abnormalities such as creaking or peeling of the wallpaper were observed ... 4
I was able to put it on, but there was a mekre abnormality only around the wallpaper ... 3
I was able to put it somehow, but after a while, peeling was found on the entire surface of the wallpaper ... 2
I couldn't put it at all ... 1

[Test Example 2]
In the composition of Example 1, the sample of Example 9 was produced in the same manner as in Example 1, except that the shape of the wallpaper with glue was a rectangular shape of 90 cm × 180 cm.
Moreover, the sample of the comparative example 5 was manufactured by the method similar to the comparative example 1 except the shape of the wallpaper with a paste having a rectangular shape of 90 cm × 180 cm in the composition of the comparative example 1.
Using the samples of Example 9 and Comparative Example 5, it was tested how many pieces of wallpaper could be attached to a 90 cm × 180 cm plate per hour.
As a result, with the wallpaper of Example 9, it was possible to attach 6 wallpapers per hour. On the other hand, with the wallpaper of Comparative Example 5, four wallpapers could be pasted per hour. In the case of the wallpaper of Comparative Example 5, during the work of pasting the wallpaper while peeling off the release sheet, the part previously attached to the upper end of the wall surface is peeled off when the release sheet is peeled off. Decreased.

[Test Example 3]
Using the samples of Examples 1 and 2 and Comparative Example 1, the peeling force when peeling the release sheet was measured. In the measurement method, after cutting the sample into a width of 50 mm, the surface on the base material side was attached to a flat resin layer, and the peeling force of the release sheet was measured under the following conditions using a tensile tester.
<Measurement conditions>
Peel angle 180 ° C
Peeling speed 300mm / min.
Temperature 23 ° C
Humidity 50%
The results are listed in Table 7.

  As shown in Table 7, in the samples of Examples 1 and 2, the peeling force when peeling the release sheet is about 1/6 to 1/3 that of the sample of Comparative Example 1, and the release sheet is easily peeled off. It is possible to increase the working efficiency when actually pasting the wallpaper with glue on the wall surface.

  The wallpaper with glue according to the present invention is a paste that can be laminated and pasted on existing wallpaper or bran paper provided with a decorative layer made of synthetic resin such as vinyl chloride, paper, fabric, metal foil, or inorganic material on the surface side. It can be suitably used as an attached wallpaper.

It is a fragmentary sectional view which shows the wallpaper with a glue concerning this invention in a packaging state. It is sectional drawing of the wallpaper with a glue shown in FIG. It is sectional drawing which shows the modification of wallpaper with a paste. It is sectional drawing which shows the modification of wallpaper with a paste.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wallpaper with paste 2 Lined paper layer 3 Makeup layer 4 Adhesive layer 5 Surface film 6 Release sheet 7 High barrier packaging material 8 Base film 9 Ceramic 10 Wallpaper body 11 Core material

Claims (5)

A wallpaper body, a glue layer provided on the back side of the wallpaper body, and a release sheet provided on the back side of the glue layer,
The glue-attached wallpaper characterized in that the glue contains a cationic acrylic resin , starch, and water. The glued wallpaper according to claim 1, wherein the glue further contains a thickener . The wallpaper with glue according to claim 1 or 2 , wherein a weight ratio of the starch to the resin is 0.5: 9.5 to 9.5: 0.5. The wallpaper with glue according to any one of claims 1 to 3 , wherein the resin and starch occupy 10 to 60% by weight of the total amount of glue components. The wallpaper with glue according to any one of claims 1 to 4 , wherein the wallpaper with glue is hermetically wrapped with a packaging material.

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