JP2000355373A - Package of wallpaper with undried paste preservable for long period - Google Patents

Abstract

PROBLEM TO BE SOLVED: To extend a period for allowing an undried paste to be preserved as it is in a packaging material and to extend a period of display at a store and decrease the number of unsold articles for a package of wallpapers with undried paste whereon the undried paste is applied to a lining paper layer of the wallpaper with the surface of the undried paste covered with a release sheet by a method wherein a water retention agent is mixed with the undried paste. SOLUTION: Each of wallpapers with undried paste 1 hermetically packaged with a packaging material is formed of a wallpaper comprising a decorative layer 3 and a lining paper layer 2, an undried paste 4 applied to the lining piper layer 2, and a release sheet 6 for covering the undried paste 4. The surface of the decorative layer 3 may be covered with a surface film 5. The undried paste 4 applied to the lining paper layer 2 on the surface opposite to the decorative layer 3 is composed of a sticking agent formed of a starch, acrylic resin and the like and a water retention agent such as sodium lactate. The water retention agent is mixed with a material of the undried paste 4 in an amount of 0.5-5 wt.%. Thereby a period in which the undried paste 4 is not allowed to dry in a packaging material and a period for displaying articles at a store can be extended respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a package of a wallpaper with a raw paste, and more particularly, to a display of the paste at a store for more than one and a half years by drastically extending a period until the raw paste is dried and oxidatively deteriorated. The present invention relates to a package of raw-pasted wallpaper that can be sold and that can be stored for a long time with little risk of remaining unsold.

[0002]

2. Description of the Related Art When gluing wallpaper to a wall surface, raw glue is applied to the back surface of the wallpaper. Usually, green paste is applied to most parts of the wallpaper. The craftsman who pastes the wallpaper uses a gluing machine when applying the raw paste to the wallpaper, so the work of applying the raw paste can be performed accurately and easily, but since an amateur does not have a gluing machine, the work is not performed. It must be done manually. Therefore, the work of attaching wallpaper to a wall surface is quite difficult for an amateur, and the finish is often poor.

[0003] Accordingly, rewetting type and adhesive-attached types of wallpapers have been put on the market as wallpaper for amateurs. The re-wet type wallpaper is glued to the back of the wallpaper with water, and when used, it is like a stamp-type wallpaper where water is applied to the surface and the glue is returned and pasted. When attaching, there is a risk that the floor surface will be soiled by spilling water, and the glue returned by the water will spill and stain the floor surface and the periphery of the wall surface. Also, there is a drawback that if the amount of water is too large or too small, the finish will not be clean. On the other hand, the type of wallpaper with adhesive does not stain the surroundings without using water or glue. May stick and may not exhibit normal adhesive strength. Then, there is a possibility that it may swell or peel off over time. Further, in the case of the type with the adhesive, since it is easily affected by the surface state of the base, attention and time are required for base adjustment.

[0004] Therefore, in order to allow even an amateur to paste the wallpaper on the wall surface accurately and easily, there is proposed a wallpaper with a raw paste applied to the wallpaper in advance. Examples of the wallpaper with raw glue include those obtained by applying raw glue on the back surface of the wallpaper, winding the wallpaper in a roll shape so that the raw glue does not adhere to the wallpaper surface, and sealing this with an airtight packaging material. Can be In addition, as an airtight packaging material in such a wallpaper with a raw paste, a heat-sealing layer is provided on one side of a gas barrier film to form a packaging film, and after folding the heat-sealing layer inside, It has been proposed to form a bag by partially heat-welding the heat-welded layers. As the gas barrier film, a two-layer film type polyvinylidene chloride and biaxially oriented polypropylene (abbreviated as KOP, hereinafter referred to as KOP), polyvinylidene chloride and polyethylene terephthalate (abbreviated as KPET, hereinafter referred to as KPET), etc. are applied. I have.

[0005]

However, the above-mentioned prior art has the following problems. That is, in the above-mentioned package of the wallpaper with the raw paste, since the gas barrier property against moisture of the packaging material is not sufficient, a large amount of moisture evaporates in the raw paste through the packaging material. Therefore, in the package of the wallpaper with the raw paste, usually, the drying of the raw paste can be prevented for only about one month, and even the one which can prevent the drying of the raw paste for the longest is at most about one year. .

[0006] In recent years, this type of merchandise has been often displayed and sold in large stores such as home centers, and the stock period is often one year or longer. In order to make the stock period one year, the quality assurance period also needs to be one year, and for that purpose, the actual useful life of the product needs to be one year or more. However, the packaged product of the above-mentioned wallpaper with raw glue has a maximum effective life of 1 at maximum.
Since it is about one year, the quality guarantee period is about one year at the maximum. This kind of product often cannot be sold out within a relatively short period of one year, so it is inevitable that the product will be disposed of after the quality assurance period, resulting in a large loss.

[0007] When the gas barrier film of the packaging material is made of aluminum foil, the film is made of KO.
It is possible to prevent the moisture from evaporating from the raw glue more than the one composed of P or KPET, but the customer is not able to confirm the pattern of the wallpaper contained in the packaging material because of poor transparency. There is a problem that it is not possible to promote customers' willingness to purchase.

[0008] The present invention has been made in view of such circumstances, it is possible to display in a store for more than one and a half years by significantly extending the period during which the raw paste does not dry in the packaging material, It is an object of the present invention to provide a package of wallpaper with live glue that can be stored for a long time with little risk of unsold and causing loss.

[0009]

According to the first aspect of the present invention,
With wallpaper paste consisting of a wallpaper consisting of a decorative layer and a backing paper layer, raw paste applied to the backing paper layer, and a release sheet covering the surface of the paste, with raw paste sealed and packaged It is a wallpaper packaging product, wherein the raw glue is mixed with a water retention agent, and is a packaging product of a raw glued wallpaper that can be stored for a long time.

According to a second aspect of the present invention, there is provided a wallpaper comprising a decorative layer and a backing paper layer, a raw paste applied to the backing paper layer, and a release sheet covering the surface of the raw paste. A package of raw glued wallpaper in which the raw glued wallpaper is sealed and packed, and the packaging material for packaging the raw glued wallpaper has an oxygen permeability.
(cc / m ²・ atm ・ 24hrs) is 1.5 or less, water vapor permeability (g / m
^The present invention is a packaging product of a wallpaper with a raw paste which can be stored for a long period of time, characterized in that the packaging material is a high barrier packaging material made of a film having a hardness of 2.24 hrs) of 1.5 or less, which is difficult to transmit oxygen and moisture.

The invention according to claim 3 is characterized in that the raw paste contains 3 to 40% by weight of starch and 0.5 to 5% by weight of a water retention agent. It is a package of wallpaper with raw glue that can be stored for a long time.

The invention according to claim 4 is characterized in that a water-impermeable film layer is interposed between the decorative layer and the backing paper layer. This is a possible packaging for wallpaper with raw glue.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a partial cross-sectional view showing a package of a wallpaper with a raw paste according to the present invention. FIG.
FIG. 2 is a cross-sectional view showing a wallpaper with raw paste in the packaged product shown in FIG. 1. The package of the wallpaper with the raw paste according to the present invention includes a wallpaper with the raw paste (1) and a packaging material (7) for hermetically sealing the wallpaper (1), and the wallpaper (1) with the raw paste is a decorative layer (3) And wallpaper comprising a backing paper layer (2), a raw paste (4) applied to the backing paper layer (2), and a release sheet (6) covering the raw paste (4). It is. Less than,
These components will be sequentially described in detail.

The material of the decorative layer (3) is not particularly limited as long as it is a material usually used as wallpaper. For example, polyvinyl chloride, polyethylene, polypropylene, ethylene-vinyl acetate copolymer (EVA) , Synthetic resin such as acrylic, paper, woven fabric, metal foil such as aluminum, wood such as cork, inorganic material such as mica,
Particularly recently, those using fibers such as kenaf, polyester (recycled polyester), cotton, recycled paper, waste glass, beer lees, and bamboo, and those using diatomaceous earth and calcium carbonate as main raw materials can be used. Note that, among these materials, it is necessary to perform a treatment that does not absorb the moisture of the raw paste (4). As shown in FIG. 1, a surface film (5) may be laminated on the surface of the decorative layer (3). This surface film (5)
The dirt on the surface of the decorative layer (3) can be prevented, and the decorative layer (3) can be hardly broken.

A backing paper layer (2) is provided on the back of the decorative layer (3). The backing paper layer (2) is provided to stably fix the raw paste (4) and to prevent the wall base from being transparent 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 nonwoven fabric, and the like.

As described above, the raw paste (4) is applied to the surface of the backing paper layer (2) on the side opposite to the decorative layer (3). This raw glue (4) is composed of a material having good moisture retention properties, for example, starch, vinyl acetate emulsion resin,
It can be composed of an adhesive comprising one or more materials selected from the group consisting of an ethylene vinyl acetate emulsion resin, PVA (polyvinyl alcohol), CMC (carboxymethyl cellulose), and an acrylic resin, and a water retention agent. As the adhesive, starch is most preferably used. The water retention agent is added to prevent drying of the wallpaper during long-term storage, and to prevent the wallpaper from being dried and unable to be applied even if it is re-attached due to failure. As its type,
For example, sodium lactate, sodium citrate, organic acid salts such as sodium acetate, ethylene glycol, glycerin, diglycerin, high boiling water-soluble organic solvents such as polyethylene glycol can be used, among which sodium lactate is preferably used. be able to.

The water retention agent is a raw material of the raw paste (4) of 0.5 to 5
It is desirable to be blended by weight%. In particular, sodium lactate, which is most preferably used as a water retention agent for the raw paste (4), is preferably blended in an amount of 0.5 to 5% by weight of the raw material of the raw paste (4), and more preferably, 2 to 3% by weight. %. If the blending amount is less than 0.5% by weight, the raw glue (4) tends to dry during storage due to a low water retention effect, and if it exceeds 5% by weight, drying after pasting the wallpaper becomes slow, This is because peeling or poor adhesion may occur.

On the other hand, starch is a raw material of raw paste (4).
It is desirable that the content be in the range of 40 to 40% by weight, and more desirably 10 to 15% by weight. If the compounding amount is less than 3% by weight, sufficient adhesive strength cannot be obtained, and if it exceeds 40% by weight, the viscosity increases and the workability during glue coating decreases.

The raw paste (4) may contain other components in addition to an adhesive such as starch and a water retention agent. For example, a preservative, a fungicide, and the like can be blended with the raw paste (4). The preservative is desirably added in an amount of 0.001 to 1% by weight of the raw material of the raw paste (4), and more desirably 0.2 to 0.5% by weight. The fungicide is
It is desirable that the raw material for the raw paste (4) is blended in an amount of 0.001 to 1% by weight, more preferably 0.1 to 0.3% by weight. If any of the components is less than the lower limit value, the effect cannot be sufficiently exerted.On the contrary, even if the upper limit value is exceeded, the effect is not so much increased and the cost is merely increased. .

The kind of the preservative is not particularly limited, but, for example, an organic iodine compound, an organic nitrogen sulfur compound, an organic bromine compound or the like can be used. The kind of the fungicide is not particularly limited, and for example, a benzimidazole compound, an organic nitrogen compound, a halogen compound, or the like can be used. The fungicide may be contained in the decorative layer (3). Further, in order to prevent the growth of aerobic bacteria and to kill them, an oxygen scavenger can be introduced into a packaging material (7) described later.

The type of the oxygen scavenger is not particularly limited, but for example, the following can be used.
If classified by component, iron-based ones 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 as it comes into contact with air, as well as self-reactive type Non-ferrous materials can be mentioned. Of the iron-based oxygen scavengers, the moisture-dependent type is generally a high moisture-compatible type, and the self-reactive type is generally a low moisture-compatible type or a medium to high moisture-compatible type. Further, the non-ferrous oxygen scavenger is generally of a low to high moisture responsive type. If classified according to the deoxygenation rate, there are a fast-acting type having a high speed and a general type having a normal speed. If classified by capacity, 15-3
000 cc (oxygen absorption amount). When classified according to properties, those that absorb only oxygen, those that simultaneously absorb oxygen and carbon dioxide, and those that generate carbon dioxide simultaneously with oxygen absorption can be mentioned. In the present invention, among those described above, a water-dependent type can be preferably used. This is because the moisture-dependent type is a high moisture-compatible type and has a high A _W (water activity) of 0.85 or more.

A release sheet (6) is adhered to the surface of the backing paper layer (2) of the raw paste (4). This release sheet (6) prevents the moisture of the raw paste (4) from evaporating and, when the wallpaper (1) with raw paste is wound, the raw paste (4) is coated with the decorative layer (3) or It can be prevented from contacting and adhering to the surface film (5). The type of the release sheet (6) is not particularly limited.
PP (unstretched polypropylene), OPP (stretched polypropylene), LDPE (low density polyethylene), HDPE
(High density polyethylene), PVDC (polyvinylidene chloride), ONY (stretched nylon), PET (polyethylene terephthalate), PVC (polyvinyl chloride), PC
(Polycarbonate), PVA (polyvinyl alcohol), EVOH (ethylene-vinyl alcohol copolymer),
PT (cellophane) or the like, or a laminate of two or more of these materials (for example, KON composed of PVDC and ONY, KT composed of PVDC and PT, KOP,
KPET etc.) can be employed. Here, Table 1 shows examples of the water vapor permeability and the thickness of the release sheet (6) made of each material. The unit of the water vapor permeability in the table is (g / m ² · 24 hrs), and the unit of the thickness is (μm).

[Table 1] When a material having a small water vapor permeability is used for the release sheet (6), it is possible to further prevent the moisture of the raw paste (4) from evaporating and to more reliably prevent the drying of the raw paste (4). . Therefore, among the above-mentioned ones, those made of PVDC can be most preferably used.

[0024] Wallpaper with raw paste (1)
Is wound or folded as shown in FIG. 1 and compacted and hermetically packaged in a high barrier packaging material (7). This packaging material (7) has a considerably low oxygen permeability and a low moisture permeability, that is, a high barrier property. In FIG. 1, reference numeral (10)
Is a paper tube serving as a core material when winding the wallpaper (1) with raw glue. The packaging material (7) is, as shown in FIG.
One or both surfaces of a base film (8) made of a synthetic resin or the like are coated with ceramics (9) using a chemical vapor deposition method or a physical vapor deposition method, particularly a vacuum vapor deposition method. The material of the base film (8) is not particularly limited, but for example, PET (polyethylene terephthalate) can be adopted. The thickness is not particularly limited, but may be, for example, 12 μm. On the other hand, the deposition thickness of the ceramic (9) can be, for example, 0.03 to 0.1 μm.

The base film (8) may be made of a heat-sealable material, but need not be.
The heat-welding material is not particularly limited, and for example, PE (polyethylene), EVA (ethylene-vinyl acetate copolymer), and PP (polypropylene) can be used. The shape of the packaging material (7) is not particularly limited as long as the contents can be hermetically sealed, but when the base film (8) is made of a heat-welding material,
For example, a so-called pouch-type bag in which two base films (8) and (8) are overlapped and three sides thereof are heat-sealed, or both sides of one base film (8) are folded. In addition, a so-called gusset-type bag in which the back and the bottom are heat-sealed can be obtained.

On the other hand, when the base film (8) is made of a material other than the heat-weldable material, for example, a heat-weldable material is provided on one side of the base film, and two sheets are superposed. Alternatively, one of the sheets is folded, the heat-weldable materials are overlapped with each other, and heat-sealed to form a bag. Alternatively, an adhesive may be applied to one surface of the base film (8) and two sheets thereof may be laminated and bonded, or one may be folded and the back and bottom thereof bonded together to form a bag. .

The above-mentioned wallpaper (1) with raw glue is hermetically packaged in the packaging material (7) thus constructed. That is,
After the wallpaper (1) with raw glue and a deoxidizer (not shown) are put in the bag-shaped packaging material (7), the opening of the packaging material (7) is welded or adhered and hermetically sealed. I do. As a result, a package of the wallpaper with the raw paste in which the wallpaper with the raw paste (1) is hermetically packaged in the packaging material (7) having a high barrier property is completed. The package of the wallpaper with the raw paste according to the present invention is obtained by replacing the high barrier packaging material (7) with a base film made of LLDPE (linear low-density polyethylene) or the like and a gas barrier property made of KOP or the like. It is also possible to adopt a configuration in which a film is stuck, the wallpaper with raw glue is hermetically sealed with a packaging material formed into a bag, and an aqueous sodium lactate solution is added to the raw glue (4) as a water retention agent.

Further, the above-mentioned wallpaper (1) with raw paste has a structure in which a backing paper layer (2) is provided on the back surface of the decorative layer (3), but the wallpaper (1) with raw paste according to the present invention. Is not limited to this. For example, as shown in FIG. 3, the wallpaper (1) with raw paste has a structure in which an impermeable film layer (8) is interposed between a decorative layer (3) and a backing paper layer (2). Good. In this case, even if the moisture of the raw paste (4) provided on the back side of the backing paper layer (2) passes through the backing paper layer (2),
The impermeable film layer (8) prevents passage to the decorative layer (3). Therefore, it is possible to prevent moisture in the raw paste (4) from evaporating from the decorative layer (3), and it is possible to more reliably prevent the raw paste (4) from drying.

The material of the water-impermeable film layer is not particularly limited. For example, PE, CPP, OPP
(Stretched polypropylene), PET, PVC, EVA, P
VDC (polyvinylidene chloride), PVA (polyvinyl alcohol), EVOH (ethylene vinyl alcohol copolymer), PC (polycarbonate), PS (polystyrene), PAN (polyacrylonitrile), LDPE (low density polyethylene), MDPE (medium density) Polyethylene), HDPE (high-density polyethylene), LLDPE, and the like.

The method of forming the water-impermeable film layer is not particularly limited, but may be, for example, co-extrusion molding lamination such as T-die method or round die method, wet lamination, hot melt lamination, single, sandwich, tandem. Extrusion lamination, dry lamination, non-solvent lamination, thermal lamination and the like can be mentioned. Among them, the T-die method is preferably used.

The wallpaper (1) with the raw paste having the water-impermeable film layer (8) is not limited to the above-mentioned structure. For example, as shown in FIG. In addition to providing the layer (2), an impermeable film layer (8) is provided on the back surface of the backing paper layer (2), and a backing paper layer (2) is further provided on the back surface of the impermeable film layer (8). ,
The backing paper layer (2) may have a configuration in which raw paste (4) is applied to the back surface.

[0031]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on embodiments.
However, the present invention is not limited to these examples. (Examples 1 to 4) [Preparation of raw paste] Starch, polyvinyl acetate, a preservative, a fungicide, and sodium lactate were dispersed and dissolved in water to obtain a raw paste. In addition, it prepared based on the prescription of Table 2 (the unit of the numerical value in a table | surface is a weight%).

[Table 2] A liquid containing an isothiazolone-based composition and a bromonitro alcohol-based composition was used as a preservative, and a liquid containing an imidazole aminoformate and an isothiazolone-based composition was used as a fungicide.

[Production of Wallpaper with Raw Glue] A backing paper layer was disposed on one side of the decorative layer, and a surface film made of EVA was attached to the other side of the decorative layer. Raw paste was applied at a weight of 170 to 200 g / m ² , and a 25 μm-thick CPP release sheet was attached to the surface of the raw paste to form a wallpaper with raw paste. In addition, the shape of the wallpaper with raw glue was a rectangular shape of 10 cm × 15 cm.

[Wrapping material with high barrier property and raw paste with this packaging material] A sheet material obtained by laminating a PET film on an LLDPE (linear low-density polyethylene) film and depositing ceramic thereon. Was used as a high barrier packaging material. This packaging material uses GL-AE (trade name) manufactured by Toppan Printing Co., Ltd. as a sheet material. In this bag,
The above-mentioned wallpaper with raw paste and a deoxidizer are accommodated, and the opening of the bag is heat-sealed to obtain a sealed package of the wallpaper with raw paste in which the inside is in a deoxygenated state. A sample was used.

(Examples 5 and 6) [Preparation of raw paste] Prepared in the same procedure as in Examples 1 to 4 based on the formulation in Table 2 (units of numerical values in the table are% by weight). [Production of wallpaper with raw glue] In the same procedure as in Examples 1 to 4,
A wallpaper with raw glue was constructed.

[Packaging Material and Packaging of Wallpaper with Raw Paste Using This Packaging Material] In Example 5, a pouch-type sheet material (manufactured by Daicel Chemical Co., Ltd.) formed by laminating a KOP film on an LLDPE film is used. Was used as a packaging material. In Example 6, KLD was placed on the LLDPE film.
A pouch-type bag composed of a sheet material (manufactured by Daicel Chemical Industries, Ltd.) obtained by laminating PET films was used as a packaging material. In addition, the shape of the bag in each example is 19 cm ×
It was a rectangular shape of 13 cm. In this bag, the above-mentioned wallpaper with raw paste and a deoxidizer are accommodated, and the opening of the bag is heat-sealed to obtain a sealed package of the wallpaper with raw paste in which the inside is in a deoxidized state. The samples of Examples 5 and 6 were used.

Incidentally, tests were conducted on the water vapor permeability and oxygen permeability of the high barrier packaging materials of Examples 1 to 4 and the packaging materials of Examples 5 and 6. The test method is as follows. Water vapor permeability test: JIS K 7129 B method (infrared sensor method) in an atmosphere of humidity 90% and temperature 40 ° C
It went based on. Oxygen permeability test: An oxygen permeability test was carried out in an atmosphere at a humidity of 60% and a temperature of 20 ° C based on the JIS K 7126 B method (isobaric method). Table 3 shows the results. The unit of water vapor transmission rate in the ^{table, (g / m 2 · 24hrs} ) is the unit of the oxygen permeability
(cc / m ² · atm · 24 hrs). In addition, this table shows the thickness of the synthetic resin film constituting each packaging material,
From the top, the total thickness and the thickness of each film are shown (the unit is (μm)).

[Table 3]

(Comparative Examples 1 to 6) [Preparation of raw paste] Raw paste was prepared based on the formulation shown in Table 4 (units of numerical values in the table are% by weight).

[Table 4]

[Production of Wallpaper with Raw Glue] A backing paper layer was disposed on one side of the decorative layer, and a surface film made of EVA was adhered to the other side of the decorative layer. Raw paste was applied at a weight of 170 to 200 g / m ² , and a 25 μm-thick CPP release sheet was attached to the surface of the raw paste to form a wallpaper with raw paste. The shape is 10
cm × 15 cm.

[Wrapping Material and Wrapping of Wallpaper with Raw Paste Using This Wrapping Material] In Comparative Examples 1 and 2, a sheet material (manufactured by Daicel Chemical Co., Ltd.) obtained by laminating a KOP film on an LLDPE film was used. A pouch-type bag was used as a packaging material. In Comparative Examples 3 and 4, a pouch-type bag composed of a sheet material formed by laminating an aluminum foil on an LLDPE film was used as a packaging material. This packaging material uses dialaster (trade name) manufactured by Reiko Co., Ltd. as a sheet material. In Comparative Examples 5 and 6, a pouch-type bag composed of a sheet material (manufactured by Daicel Chemical Industries, Ltd.) obtained by laminating a KPET film on an LLDPE film was used as a packaging material. The shape of the bag in each example was a rectangular shape of 19 cm × 13 cm. In this bag, the above-mentioned raw-pasted wallpaper and an oxygen absorber are accommodated, and the opening of the bag is heat-sealed to obtain a sealed package of the raw-pasted wallpaper in which the inside is deoxidized. The samples of Examples 1 to 6 were used.

Incidentally, a test was conducted on the water vapor permeability and the oxygen permeability of this packaging material. The test method is
This is the same as the above-described test method for the packaging materials of Examples 1 to 6. Table 5 shows the results. Further, this table shows the total thickness of the synthetic resin film constituting each packaging material (unit is (μm)).

[Table 5]

Four each of the above Examples 1 to 6 and Comparative Examples 1 to 6 were prepared, and they were prepared at an average temperature of 50 °.
C, left in a room with an average humidity of 65%. Next, for each example, open the package after one week, two weeks, three weeks, and four weeks, observe the state of the raw glue, and determine the water retention, the workability of applying wallpaper (easiness of application), and the adhesiveness. It was determined based on the following criteria. Further, the discriminability of the pattern in the packaged state at the time of manufacturing was determined based on the following criteria. Table 6 shows the determination results for the examples. Table 7 shows the determination results of the comparative examples. Water retention / drying of the raw paste is not observed at all ... 5-Drying of the raw paste is slightly observed around the wallpaper, but almost not observed .... 4-Drying of the raw paste is observed around the wallpaper.・ ・ 3 ・ Drying of the raw paste is found on almost the entire surface of the wallpaper ・ ・ ・ 2 ・ Drying of the raw paste is found on the entire surface of the wallpaper ・ ・ ・ 1 Workability and adhesion・ Can be applied without any problem, and No abnormalities such as makeup on the wallpaper and peeling were observed..5 ・ It was necessary to press the periphery of the wallpaper with the pressing roller, but no abnormalities such as makeup on the wallpaper and peeling were observed.4. Was able to be done, but abnormalities were observed only around the wallpaper ... 3 ・ Somehow could be applied, but after a while, peeling was observed on the entire surface of the wallpaper ・ ・ ・ 2 ・ No application at all identification of ... 1 pattern pattern that could not You can hardly identify the pattern pattern of the decorative layer in a state in which the pattern pattern of the decorative layer was little identification difficult ... 2 packaging in a state in which ... 3 packaged that can better identify the pattern pattern of the decorative layer in the sex packaged state, ..1

[Table 6]

[Table 7] In Table 7, * indicates that the measurement was omitted.

At the time of the determination, the water retention of the raw paste was measured. The water retention rate was calculated based on the following equation. Water retention (%) = A / B × 100 A: Residual water content of raw paste measured at opening (g) B: Water content of raw paste at production (g) Table 6 shows the measurement results of the examples. . Table 7 shows the measurement results of the comparative examples. In Table 7, * indicates that the measurement was omitted.

FIG. 5 is a graph showing the change of the water retention rate in the embodiment. In FIG. 5, the broken line indicated by a circle indicates the result of the first embodiment, the broken line indicated by the mark ● indicates the result of the second embodiment, and the broken line indicated by the triangle indicates the example. As a result of the test 3, a black triangle indicates a result of the fourth embodiment, a black square indicates a result of the fifth embodiment, and a triangle indicates a result of the sixth embodiment. FIG. 6 is a graph showing a change in the water retention rate in the comparative example. In FIG. 6, a broken line indicated by a circle indicates the result of Comparative Example 1, a broken line indicated by a black mark indicates the result of Comparative Example 2, and a square indicates the result of Comparative Example 5. And ■ are the results of Comparative Example 6.

From the results in Tables 6 and 7, and FIGS. 5 and 6, the water retention of Examples 1 to 6 is significantly higher than Comparative Examples 1, 2, 5, and 6 in each week. You can see that. This test is an accelerated test, and the test is performed under severe conditions at room temperature of 50 ° C., in which moisture evaporates easily. The wallpaper with raw glue is in the form of a sheet. In an actual product, the wallpaper with the raw paste is in a state of being wound in a roll shape, and the wallpaper with the raw paste is overlapped with each other, so that the moisture of the raw paste does not easily evaporate to the outside.
Therefore, it can be said that making the wallpaper with the raw paste into a sheet as in this test is one of the severe conditions. When this test method is used, it has been confirmed that the water retention rate three weeks after the start of the test corresponds to the water retention rate of the raw paste when the actual product is stored at normal temperature and normal humidity for about one year. . In this test, the number of weeks that have elapsed since the start of the test is multiplied by 1/3, and the period in units of years corresponds to the actual elapsed period. Further, it has been confirmed that if the water retention rate is less than 30%, there is a possibility that sufficient workability and adhesiveness may not be maintained.

FIG. 6 shows that in each comparative example, the water retention was about 30% three weeks after the start of the test. Therefore, it can be seen that, in an actual product manufactured in accordance with the configuration of each comparative example (wall paper with a raw paste is in a roll shape), sufficient workability and adhesiveness can be maintained for only about one year at normal temperature and normal humidity. .

On the other hand, it can be seen from FIG. 5 that in each of the examples, even after three weeks from the start of the test, the water retention was in a state far exceeding 30%. In Examples 5 and 6, the water retention after 4 weeks is about 30%. The four weeks in this test would correspond to about 1.4 years in actual practice according to the actual period calculation method described above. Therefore, in Examples 5 and 6, it is found that sufficient workability and adhesiveness can be maintained for at least 1.4 years or more, and that the storable period can be extended longer than in each comparative example. Example 1,
In 2, 3, and 4, the graph is substantially linear. By extending each graph to the right, the water retention rate after the fourth week can be assumed. In this case, the water retention of each example reaches 30% after about 8 weeks.
This is about two years in practice. Therefore, Example 1,
In Examples 2, 3, and 4, it can be seen that sufficient workability and adhesiveness can be maintained for at least 2 years or more, and that the storable period can be significantly extended as compared with each Comparative Example.

From the above results, it can be seen that the package of the wallpaper with the raw paste according to the present invention is excellent in water retention and workability for applying the wallpaper and adhesiveness, and is at least 1.4 years or longer, and is longer than 2 years. It can be seen that the water retention state of the raw paste can be maintained satisfactorily over a period of time, which is much better than the comparative example. In addition, it can be seen that the package of the wallpaper with the raw paste according to the present invention can clearly identify the pattern of the wallpaper stored in the packaging material. In contrast, as in Comparative Examples, without blending a water retaining agent consisting of sodium lactate aqueous solution on the raw glue, further oxygen permeability of the packaging material and ^{(cc / m 2 · atm ·} 24hrs) 1.5 exceeded, steam When permeability (g / m ² · 24hrs) exceeds 1.5,
It can be seen that the drying of the raw paste can be prevented at most for only about one year. Further, the one using aluminum foil as the gas barrier material has poor transparency, and the pattern of the wallpaper contained in the packaging material cannot be identified.

[0048]

According to the first aspect of the present invention, there is provided a wallpaper comprising a decorative layer and a backing paper layer, a raw paste applied to the backing paper layer, and a release sheet covering the surface of the raw paste. Packaging of raw glued wallpaper obtained by sealingly packaging a raw glued wallpaper comprising: Since it is a product, it has the following effects. That is, since the water-retaining agent is mixed with the raw paste, the water retention of the raw paste itself is improved. This makes it possible to prevent the drying of the raw paste in the packaging material for substantially one and a half years, and the quality assurance period can be made one and a half years or more. Accordingly, the packaged product of the wallpaper with the raw glue can be displayed and sold in stores for more than one and a half years, so that there is little risk of remaining unsold and causing loss.

[0049] The invention according to claim 2 comprises a wallpaper comprising a decorative layer and a backing paper layer, a raw paste applied to the backing paper layer, and a release sheet for covering the surface of the raw paste. A package of raw glued wallpaper in which the raw glued wallpaper is sealed and packed, and the packaging material for packaging the raw glued wallpaper has an oxygen permeability.
(cc / m ²・ atm ・ 24hrs) is 1.5 or less, water vapor permeability (g / m
⁽²・ 24hrs) is a packaging material of raw glue capable of long-term storage characterized by being a high barrier packaging material that is difficult to transmit oxygen and moisture consisting of a film of 1.5 or less. Has the effect of That is, oxygen permeability (c
c / m ²・ atm ・ 24hrs) is 1.5 or less, water vapor permeability (g / m ²
Since the wallpaper with raw glue is hermetically sealed with a packaging material having a high barrier of 24 hrs) of 1.5 or less, the barrier property against oxygen and moisture is remarkably improved. This makes it possible to prevent the drying of the raw paste in the packaging material for substantially two years or more, and the quality assurance period can be one and a half years or more. Accordingly, the packaged product of the wallpaper with the raw glue can be displayed and sold in stores for more than one and a half years, so that there is little risk of remaining unsold and causing loss.

Here, if the raw paste contains 3 to 40% by weight of starch and 0.5 to 5% by weight of a water retention agent, it is very excellent in water retention, workability and adhesiveness. In addition, it is possible to provide a low-cost packaged product of a wallpaper with raw paste that can be stored for a long period of time.

If a water-impermeable film layer is provided between the decorative layer and the backing paper layer, the water-impermeable film layer prevents the moisture of the raw paste from evaporating from the decorative layer. Therefore, drying of the raw paste can be more reliably prevented, and the surface of the decorative layer can be prevented from being sticky.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view illustrating a package of a wallpaper with live glue according to the present invention, which can be stored for a long time.

FIG. 2 is a cross-sectional view showing a wallpaper with raw glue in the packaged product shown in FIG. 1;

FIG. 3 is a cross-sectional view showing a modified example of a wallpaper with raw glue.

FIG. 4 is a cross-sectional view showing a modified example of a wallpaper with raw glue.

FIG. 5 is a diagram illustrating a change in a water retention rate in an example.

FIG. 6 is a diagram illustrating a change in a water retention rate in a comparative example.

[Explanation of symbols]

 1 ... wallpaper with raw glue 2 ... backing paper layer 3 ... decorative layer 4 ... raw glue 6 ... peel sheet 7 ... high Barrier packaging material 8 ..... Water-impermeable film layer

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Yoshihiko Nishimura, Inventor Yoshihama Nishimura 4-1-1-12, Tsurumi-ku, Tsurumi-ku, Osaka Asahipen Co., Ltd. F-term (reference) 3E067 AA22 AB75 CA06 CA10 FA01 FC01 GA21

Claims (4)

[Claims] 1. A wallpaper comprising a decorative layer and a backing paper layer,
Raw paste applied to the backing paper layer, and a packaging product of a raw paste with a raw paste in which a wallpaper with a raw paste comprising a release sheet covering the surface of the raw paste is hermetically sealed. Is a package of wallpaper with fresh glue that can be stored for a long time, characterized by containing a water retention agent. 2. A wallpaper comprising a decorative layer and a backing paper layer,
A package of raw glue-coated wallpaper, which is a sealed package of a raw glued wallpaper comprising a raw glue applied to the backing paper layer and a release sheet covering the surface of the raw glue. The packaging material used for packaging is oxygen permeability (cc / m ²
atm · 24hrs) is 1.5 or less, the water vapor permeability (g / m ² · 24hr
s) A packaging material of a wallpaper with a raw paste which can be stored for a long time, characterized in that the packaging material is a high barrier packaging material made of a film having a molecular weight of 1.5 or less and hardly permeating oxygen and moisture. 3. The raw glue is 3 to 40% by weight of starch,
3. The packaged product with raw paste capable of long-term storage according to claim 1, comprising 0.5 to 5% by weight of a water retention agent. 4. 4. The wallpaper with fresh paste capable of long-term storage according to claim 1, wherein a water-impermeable film layer is interposed between the decorative layer and the backing paper layer. Packaging.