Wallpaper and its manufacturing method

Abstract

To provide an environment-friendly wall paper having high stain resistance and scratch resistance, and a manufacturing method thereof.SOLUTION: A wall paper 10 is formed by sequentially stacking a paper substrate 11, a foam resin layer 12 containing at least resin component, foaming agent, and filler, a pattern layer 13 having printed picture pattern, and a surface film layer 14 of ethylene-vinyl alcohol copolymer. A non-vinyl chloride resin containing at least either one of ethylene-vinyl acetate copolymer and ethylene-unsaturated carboxylic acid copolymer is used for the foam resin layer 12. The basis weight of the foam resin layer 12 is set to 80 g / m2 or more and 100 g / m2 or less. Weighing amount of the paper substrate 11 may be set to 50 g / m2 or more and 70 g / m2 or less. Addition amount of the foaming agent may be set to 5 parts by weight or more and 20 parts by weight or less with respect to 100 parts by weight of resin component of the foam resin layer 12.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] This invention relates to environmentally friendly wallpaper that is highly resistant to stains and scratches, and a method for producing the same. [Background technology]

[0002] Conventionally, a stain-resistant wallpaper has been known in which a film made of a crystalline polymer obtained by saponifying a random copolymer of ethylene and vinyl acetate is laminated onto a substrate to form a coating (see lines 3-10, page 7 and figure 4 of Patent Document 1).

[0003] Furthermore, conventionally, wallpaper has been known in which a foamed resin layer made of an olefin-based thermoplastic resin, a pattern layer, and a surface layer made of a nylon resin are laminated in this order on a base layer, and a textured pattern is applied from the surface layer to the foamed resin layer (see paragraph

[0013] and Figure 1 of Patent Document 2). Furthermore, as an example of the olefin-based thermoplastic resin forming the conventional foamed resin layer, an ethylene-vinyl acetate copolymer is given (see paragraph

[0015] of Patent Document 2).

[0004] Conventionally, wallpaper that blocks volatile harmful substances has been known, which is formed by sequentially laminating a vapor-deposited thin film layer made of an inorganic oxide and a gas barrier coating layer on a paper base material, and then forming a surface material made of polyvinyl chloride or foamed polyvinyl chloride on the gas barrier coating layer via an adhesive layer (see paragraph

[0018] and Figure 1 of Patent Document 3). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Utility Model Application Publication No. 59-172797 [Patent Document 2] JP 2002-52665 A [Patent Document 3] JP 2005-171446 A Summary of the Invention [Problem to be solved by the invention]

[0006] Among the above-mentioned conventional wallpapers, there are those which have a nylon film layer or an ethylene-vinyl alcohol copolymer film layer on the surface of a foamed resin layer. These materials can be wiped clean with water or mild detergent and are also highly scratch-resistant, so they are used in a wide range of residential spaces, such as entrance halls, kitchens, and washrooms, which are prone to getting dirty. Furthermore, in typical homes, when wallpaper made from a foamed resin layer is used, its high gas permeability poses the problem that volatile harmful substances such as adhesives used on the base material such as wood-based substrates on the wall, monomers released from the adhesives, residual solvents, and chemical substances can seep into the living space. However, wallpaper with an ethylene-vinyl alcohol copolymer film layer is able to solve these problems with its high gas barrier properties.

[0007] However, currently, the only wallpapers with an ethylene-vinyl alcohol copolymer film layer are made from PVC resin. PVC wallpaper, the main material of which is PVC, produces chlorine gas that is toxic to the environment and human body when burned, so in recent years there has been an increasing demand for non-PVC wallpaper. However, due to the poor adhesion between the non-PVC resin and the ethylene-vinyl alcohol copolymer film layer, not only is sufficient adhesion strength not achieved, but there are also issues such as a lack of design appeal for the embossed pattern, and such wallpaper does not currently exist on the market. In addition, wallpaper with a nylon film layer generates hydrogen cyanide during incomplete combustion, so in the event of a fire in a closed space such as an indoor space, it can cause not only carbon monoxide poisoning but also cyanide poisoning, which can become severe.

[0008] Therefore, in order to solve the above problems, an object of one aspect of the present invention is to provide an environmentally friendly wallpaper that is highly resistant to stains and scratches, and a method for producing the same. [Means for solving the problem]

[0009] One aspect of the present invention provides wallpaper comprising a paper base material, a foamed resin layer containing at least a resin component, a foaming agent, and a filler, a design layer having a printed design, and a surface film layer of an ethylene-vinyl alcohol copolymer, laminated in this order. The foamed resin layer is made of a non-vinyl chloride resin containing at least one of an ethylene-vinyl acetate copolymer and an ethylene-unsaturated carboxylic acid copolymer, and the foamed resin layer has a basis weight of 80 g / m. 2 More than 100g / m 2 It is characterized by setting the following:

[0010] In addition, in one aspect of the present invention, the basis weight of the paper base material is 50 g / m 2 More than 70g / m 2 It is characterized by setting the following: The wallpaper according to one aspect of the present invention is characterized in that the amount of the foaming agent added is 5 parts by mass or more and 20 parts by mass or less relative to 100 parts by mass of a resin component of the foamed resin layer.

[0011] A method for producing wallpaper according to one embodiment of the present invention comprises sequentially laminating a paper base material, a foamed resin layer containing at least a resin component, a foaming agent, and a filler, a design layer having a printed design, and a surface film layer made of an ethylene-vinyl alcohol copolymer; immediately after heating and foaming the foamed resin layer, laminating a film onto the surface of the design layer while applying a constant temperature and a predetermined pressure, and then cooling to form the surface film layer.

[0012] In one aspect of the present invention, a method for producing wallpaper is provided, comprising the steps of: forming the foamed resin layer with a non-vinyl chloride resin containing at least one of an ethylene-vinyl acetate copolymer and an ethylene-unsaturated carboxylic acid copolymer; and setting the basis weight of the foamed resin layer to 80 g / m 2 More than 100g / m 2 It is characterized by setting the following: Effect of the Invention

[0013] According to one aspect of the present invention, it is possible to provide environmentally friendly wallpaper that is highly resistant to stains and scratches, and a method for producing the same. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a cross-sectional view of a wallpaper according to a first embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] (Wallpaper 10) In Fig. 1, reference numeral 10 denotes wallpaper, which has a surface film layer 14 of ethylene-vinyl alcohol copolymer on the surface of a non-PVC foamed resin layer 12. The wallpaper 10 can be cleaned with a damp cloth or a neutral detergent, and is also highly scratch-resistant, making it suitable for use in a wide range of residential spaces, such as hallways, kitchens, and washrooms, which tend to get dirty easily.

[0016] The wallpaper 10 has a layer structure as follows, which is four layers. The following items (1) to (4) will be discussed later. (1) Paper base material 11 (2) Foamed resin layer 12 (3) Picture layer 13 (4) Surface film layer 14 The layer structure of the wallpaper 10 is not limited to the above-mentioned (1) to (4), and an embossed pattern 15 constituting a concave-convex pattern may be formed on the surface of the wallpaper 10. In addition, an anchor coat layer (not shown) may be provided between the design layer 13 and the surface film layer 14.

[0017] (Paper base material 11) The paper base material 11 can be any material that is commonly used as a paper base material, such as backing paper for wallpaper, without any particular limitations. For example, it is possible to use flame-retardant paper made mainly of pulp impregnated with a water-soluble flame retardant, or inorganic paper mixed with an inorganic agent. The weight of the backing paper is 50 g / m 2 More than 70g / m 2The thickness is set as follows. This is to provide the wallpaper 10 with non-combustible properties while maintaining its strength.

[0018] (Foamed resin layer 12) The foamed resin layer 12 is non-vinyl chloride type and is laminated on the paper base material 11 . The foamed resin layer 12 contains a resin component, a filler, a foaming agent, a foaming assistant, a resin component, and additives. The foamed resin layer 12 is formed by foaming the foaming agent. The foamed resin layer 12 has a basis weight of 80 g / m 2 More than 100g / m 2 The values ​​are set as follows. This is to provide non-combustible performance while maintaining design. As the resin component of the foamed resin layer 12, a non-vinyl chloride resin containing at least one of an ethylene-vinyl acetate copolymer and an ethylene-unsaturated carboxylic acid copolymer is used.

[0019] The content of the monomer other than ethylene contained in the ethylene copolymer is, for example, preferably in the range of 5% by mass to 25% by mass, more preferably in the range of 9% by mass to 20% by mass. By adopting such a copolymerization ratio, it is possible to improve the extrusion film formability. Specifically, the copolymerization ratio of vinyl acetate (VA amount) of an ethylene-vinyl acetate copolymer is preferably in the range of 9% by mass to 25% by mass, more preferably in the range of 9% by mass to 20% by mass, and the copolymerization ratio of methyl methacrylate (MMA amount) of an ethylene-methyl methacrylate copolymer is preferably in the range of 5% by mass to 25% by mass, more preferably in the range of 5% by mass to 15% by mass. Furthermore, in the ethylene-methacrylic acid copolymer, the copolymerization ratio of acrylic acid (MAA amount) is preferably within the range of 2% by mass to 15% by mass, more preferably within the range of 5% by mass to 11% by mass.

[0020] (Filler) As the filler, for example, an inorganic filler can be used. The inorganic filler may be used alone or in combination of two or more kinds. Examples of the inorganic filler that may be used include calcium carbonate, titanium dioxide, kaolin, etc. The content of the filler is preferably 60 parts by mass or more and 120 parts by mass or less per 100 parts by mass of the resin component of the resin layer. By adding the filler in this range, the combustion calories per unit area are reduced, and the non-flammability of the wallpaper 10 is further improved.

[0021] (foaming agent) The blowing agent is a volatile blowing agent, and is preferably added to the resin component of the resin layer in the form of a thermally expandable microcapsule encapsulated in a shell made of either a polymer having two or more kinds of nitrile monomers as constituent units, or a polymer having two or more kinds of nitrile monomers and a non-nitrile monomer as constituent units, from the viewpoint of performance (expansion ratio, strength). Other usable blowing agents include azo-based, hydrazide-based, and nitroso-based agents. The amount of foaming agent is preferably 1 to 20 parts by weight, more preferably 5 to 15 parts by weight, per 100 parts by weight of resin. Although it functions as wallpaper with just 1 part by weight, the foamed resin layer is insufficient in thickness, and the embossing is not sufficient, resulting in poor design, so it is preferable to add 5 parts by weight or more.

[0022] (pigments, etc.) If necessary, the resin layer may be colored by adding a pigment, etc. Examples of the pigment that can be used include inorganic pigments such as iron oxide and carbon black, and organic pigments such as aniline black and phthalocyanine blue. The amount of pigment added is preferably 5% by mass or more and 50% by mass or less, and more preferably 10% by mass or more and 30% by mass or less, based on the total amount of the resin layer, if it is an inorganic pigment, and preferably 10% by mass or less and more preferably 5% by mass or less, if it is an organic pigment.

[0023] (Resin composition) If necessary, known additives such as flame retardants, cell regulators, stabilizers, and lubricants can be used in the resin composition. As the flame retardant, for example, metal oxide flame retardants such as magnesium hydroxide and aluminum hydroxide, phosphorus-based flame retardants such as phosphate esters, bromine-based flame retardants such as tetrabromobisphenol A, and the like can be used.

[0024] (Picture layer 13) The pattern layer 13 is laminated on the foamed resin layer 12. The pattern layer 13 is formed to improve the design of the foamed wallpaper by decorating the surface side with a pattern such as a wood grain pattern. The design layer 13 is made of a coating film formed by printing on the surface of the resin layer 2. The design layer 13 is not particularly limited as long as it satisfies the requirements for light resistance, color development, and safety of the ingredients used (e.g., not containing heavy metals or sulfur compounds as pigments or additives) that are generally required for wallpaper 10, but it is particularly preferable that the design layer 13 be a water-based ink with an acrylic polymer as the base resin.

[0025] (Anchor coat layer) Although not shown, the anchor coat layer is provided between the design layer 13 and the surface film layer 14 to improve the adhesion between the foamed resin layer 12 and the surface film layer 14. For the anchor coat layer, for example, an ink regulator based on an acrylic polymer or an acrylic coating agent is used.

[0026] (Surface film layer 14) The surface film layer 14 is an ethylene-vinyl alcohol copolymer, and is laminated on the pattern layer 13. The surface film layer 14 has high gas barrier properties, preventing harmful substances such as VOCs emitted from housing base materials from entering the room, and does not absorb odors from daily life in the room, resulting in wallpaper 10 that is kind to not only the environment but also to humans.

[0027] (Embossed pattern 15) The embossed pattern 15 is formed on the surface of the wallpaper 10 and constitutes a concave-convex pattern.

[0028] (Manufacturing method) The wallpaper 10 having the above-mentioned structure is formed by laminating in this order the paper base material 11, the foamed resin layer 12, and the pattern layer 13. An anchor coat layer (not shown) may be provided on the surface of the pattern layer 13. Immediately after the foamed resin layer 12 is heated and foamed, an embossed pattern 15 is imparted by applying pressure with an embossing roll, and a film is laminated onto the surface of the design layer 13 or the anchor coat layer while applying a constant temperature and a predetermined pressure. Thereafter, by cooling, the surface film layer 14 and the embossed pattern 15 are formed on the surface of the design layer 13 or the anchor coat layer, thereby producing the wallpaper 10. The pressure applied during embossing should be within the range of 9,800 N / m to 24,500 N / m, and if possible, within the range of 14,700 N / m to 19,600 N / m.

[0029] (Actions and Effects of the Embodiments) According to the wallpaper 10 of the embodiment, by having a surface film layer 14 of an ethylene-vinyl alcohol copolymer on the surface of the non-PVC foamed resin layer 12, it is possible to provide wallpaper that does not generate toxic gases when burned.

[0030] Furthermore, the wallpaper 10 according to the embodiment is not only resistant to dirt and scratches, but also prevents the adhesion of odorous components and the penetration of harmful substances generated from construction materials. Furthermore, according to the wallpaper 10 of the embodiment, the basis weight of the foamed resin layer 12 is 80 g / m 2 More than 100g / m 2 By setting the value below, it is possible to provide non-flammability while maintaining design.

[0031] According to the wallpaper 10 of the embodiment, the basis weight of the paper base material 11 is 50 g / m 2 More than 70g / m 2 By setting the temperature below, the wallpaper 10 can be provided with non-flammable properties while maintaining its strength. According to the wallpaper 10 of this embodiment, the foaming agent is added in an amount of 5 to 20 parts by mass relative to 100 parts by mass of the resin component of the foamed resin layer 12, thereby providing a preferable thickness and design.

[0032] According to the manufacturing method of the wallpaper 10 of the embodiment, it is possible to obtain wallpaper 10 in which the surface film layer 14 is in close contact with the underlying foamed resin layer 12. Moreover, compared to a manufacturing method in which the surface film layer 14 is extruded, it is possible to obtain wallpaper 10 having a more uniform surface film layer 14. Furthermore, according to the method for producing wallpaper 10 of the embodiment, by using an ethylene-vinyl alcohol copolymer film for the surface film layer 14, it is possible to obtain wallpaper that is not only resistant to dirt and scratches, but also prevents the adhesion of odorous components and the penetration of harmful substances generated by structural materials. EXAMPLES

[0033] Below, examples 1 to 3 of wallpaper according to the first embodiment of the present invention and comparative examples 1 to 6 will be explained. Note that the present invention is not limited to the following examples 1 to 3.

[0034] Example 1 The layer structure and manufacturing method of Example 1 are as follows. (1)Paper base material The paper base material is wallpaper backing paper (fibrous sheet), with a basis weight of 65g / m 2 It is. (2) Foamed resin layer The foamed resin layer was made by applying a paste of 90 parts of filler (calcium carbonate) and 10 parts of capsule foaming agent to 100 parts by mass of EVA resin base (hereinafter, for simplicity, referred to as "parts") by a coating method, and the basis weight was 80 g / m 2 It is. (3) Picture layer The design layer is printed using acrylic resin ink by gravure printing, and has a basis weight of 2 g / m 2 It is.

[0035] (4) Anchor coat layer The anchor coat layer is an acrylic resin-based coating applied over the printed pattern, with a dry basis weight of 5 g / m 2 The coating is applied by gravure printing so as to obtain the above-mentioned. (5) Manufacturing method Immediately after heating and foaming, an embossed pattern is applied by applying pressure with an embossing roll, and an ethylene-vinyl alcohol copolymer film (HF-ME12, manufactured by Kuraray Co., Ltd.) is laminated onto the foam. The foam is then cooled to form a surface film layer.

[0036] (Examples 2 to 3, Comparative Examples 1 to 2) The basis weight of the foamed resin layer was changed in Examples 2 and 3 and Comparative Examples 1 and 2. Note that the other factors were the same as in Example 1, except for the basis weight of the foamed resin layer. Example 2 Example 2 is the same as Example 1 except that the foamed resin layer has a basis weight of 80 g / m 2 whereas the basis weight is 90g / m 2 is increasing. Example 3 Example 3 is the same as Example 1 except that the foamed resin layer has a basis weight of 80 g / m 2 whereas the basis weight is 100g / m 2 is increasing.

[0037] Comparative Example 1 In Comparative Example 1, the foamed resin layer in Example 1 has a basis weight of 80 g / m 2 whereas the basis weight is 70g / m 2 has decreased to. Comparative Example 2 In Comparative Example 2, the foamed resin layer in Example 3 has a basis weight of 100 g / m 2 whereas the basis weight is 110g / m 2 is increasing.

[0038] Comparative Example 3 In Comparative Example 3, the surface film layer was changed to a 15 μm PVDC-coated ONY. (Manufactured by Unitika Ltd.: "EMBLEM" (registered trademark) DCR15) Comparative Example 4 In Comparative Example 4, the surface film layer was changed to 15 μm ONY. (Mitsubishi Chemical Corporation: Santonil SNR)

[0039] Comparative Example 5 In Comparative Example 5, the surface film layer was changed to a 20 μm OPP. (Toyobo Co., Ltd.: Pylen Film SL P3162) Comparative Example 6 In Comparative Example 6, the surface film layer was changed to 19 μm PET. (Toyobo Co., Ltd.: Toyobo Ester Film E5101)

[0040] (Evaluation method, evaluation criteria) There are six types of evaluation methods, i.e., physical property evaluation, for wall materials: (1) Film adhesion (2) Design (3) Gas barrier properties (oxygen permeability) (4) Scratch resistance (5)Environment (6) Non-flammable

[0041] (Film adhesion) The film adhesion was measured by measuring the adhesion strength of the surface film layer using a Tensilon universal material testing machine. The film adhesion was evaluated according to the following three criteria: "○", "△", and "×". "○" was evaluated as passing, and the other "△" and "×" were evaluated as failing. ○: Adhesion strength 0.5kgf / 25mm or more, or material breakage △: Adhesion strength 0.3~0.5kgf / 25mm or more ×: Adhesion strength 0.3kgf / 25mm or less

[0042] (Design) The design was evaluated by observing the height difference of the embossed bumps on the cross section of the wallpaper using a microscope. The design was evaluated based on the following three-level scale: "○", "△", and "×". "○" was evaluated as passing, while "△" and "×" were evaluated as failing. ○: Emboss height difference is 30~60μm △: Emboss height difference is 20~30μm ×: Measurement not possible due to insufficient adhesion of the film

[0043] (Gas barrier properties (oxygen permeability)) The gas barrier property was evaluated by measuring the oxygen permeability at 25°C and 50% RH. The measured oxygen permeability values ​​are also shown in the lower part of Table 1. The gas barrier properties were evaluated on a three-level scale, "○", "×", and "-", with "○" being a pass and "×" and "-" being failing. ○:10cc / m 2 ·day · atm or less ×:10cc / m 2 ·day · atm or more -: Testing not possible due to insufficient adhesion

[0044] (Scratch resistance) The scratch resistance was measured using the surface strengthening test specified by the Wallpaper Industry Association. The evaluation criteria for scratch resistance were as follows: 3 levels of "○", "×", and "-". "○" was evaluated as passing, and the other levels "×" and "-" were evaluated as failing. ○: The foamed resin layer is not exposed ×: The foamed resin layer is slightly exposed. -: Testing not possible due to insufficient adhesion

[0045] (environment) The environment was judged based on whether or not the surface film layer contained "chlorine." The environmental evaluation criteria were as follows, with two levels of "○" and "×", with "○" being a pass and all other marks being "×" being a fail. 〇: The surface film layer does not contain chlorine ×: The surface film layer contains chlorine.

[0046] (Nonflammable) The non-combustibility was measured by using a cone calorimeter C3 (manufactured by Toyo Seiki) to test the heat generation of non-combustible materials (50 kW / m2) based on the heat generation test method (ISO 5660) specified in the Building Standards Act. 2 Heating at 400°C for 20 minutes was performed. The evaluation criteria for non-flammability were as follows: "○" and "×", with "○" being a pass and "×" being a fail. ○: Burned calories are 7.2MJ or less ×: Calories burned are over 7.2MJ

[0047] (Evaluation Results) The evaluation results of the wallpaper are as shown in Table 1 below.

[0048] [Table 1]

[0049] (Examples 1 to 3 and Comparative Examples 1 to 6) Among Examples 1 to 3 and Comparative Examples 1 to 6, only three of Examples 1 to 3 were "passed" in all six types of evaluation methods.

[0050] (Film adhesion evaluation results) Concerning the film adhesion, four of Comparative Examples 3 to 6 failed. This is presumably because a surface film layer of a type other than the ethylene-vinyl alcohol copolymer surface film layer used in Example 1 (HF-ME12 manufactured by Kuraray Co., Ltd.) was used.

[0051] (Design Evaluation) In the evaluation of design, the five comparative examples, 1 and 3 to 6, failed. It is assumed that the cause of the problem in Comparative Example 1 is that the basis weight of the foamed resin layer was too small, and that the cause of the problem in Comparative Examples 3 to 6 is that a type of surface film layer other than that used in Example 1 was used.

[0052] (Gas barrier property evaluation results) In the evaluation of the gas barrier property, four of Comparative Examples 3 to 6 failed. This is presumably because a surface film layer of a type other than that used in Example 1 was used.

[0053] (Scratch resistance evaluation results) In the evaluation of scratch resistance, three of Comparative Examples 3 to 6, excluding Comparative Example 4, failed the evaluation. It is presumed that the cause of the three cases of Comparative Examples 3, 5, and 6 is that a type of surface film layer other than that used in Example 1 was used.

[0054] (Environmental evaluation results) Regarding the environmental evaluation, only one case, Comparative Example 3, failed. Regarding the one case in Comparative Example 3, it is presumed that the cause was that a surface film layer of a type other than that used in Example 1 was used.

[0055] (Non-flammable evaluation results) Regarding non-combustibility, the three comparative examples, 2, 5 and 6, failed the test. It is presumed that the cause of the problem in Comparative Example 2 was that the basis weight of the foamed resin layer was too high, and that the cause of the problems in Comparative Examples 5 and 6 was that a type of surface film layer other than that used in Example 1 was used.

[0056] (Overall evaluation results) Comparing Examples 1 to 3 with Comparative Example 1 and Comparative Example 2, only the basis weight of the foamed resin layer was changed. Examples 1 to 3 were "passed" in all six types of evaluation methods. In contrast, in Comparative Example 1, the basis weight of the foamed resin layer was too small, and therefore the design was not evaluated as acceptable.

[0057] In addition, in Comparative Example 2, the foamed resin layer had too much basis weight, and therefore the non-combustibility was evaluated as unacceptable. From this, in Examples 1 to 3, the basis weight of the foamed resin layer is 80 g / m 2 More than 100g / m 2 It can be inferred that the following is appropriate: It can also be assumed that the basis weight of the foamed resin layer affects the design and fire resistance.

[0058] On the other hand, when comparing Examples 1 to 3 with Comparative Examples 3 to 6, it can be inferred that the surface film layer made of ethylene-vinyl alcohol copolymer (HF-ME12 manufactured by Kuraray Co., Ltd.) used in Example 1 is optimal. It can also be assumed that the type of surface film layer affects at least one of the six evaluation results. [Explanation of symbols]

[0059] 10 Wallpaper 11 Paper base material 12 Foamed resin layer 13 Picture layer 14 Surface film layer 15 Embossed Pattern

Claims

1. A paper substrate; A foamed resin layer containing at least a resin component, a foaming agent, and a filler; A pattern layer having a printed pattern; An anchor coat layer containing an acrylic resin; a surface film layer of an ethylene-vinyl alcohol copolymer; This wallpaper is made by laminating the following layers in order: The foamed resin layer is made of a non-vinyl chloride resin containing at least one of an ethylene-vinyl acetate copolymer and an ethylene-unsaturated carboxylic acid copolymer, The foamed resin layer has a basis weight of 80 g / m 2 More than 100g / m 2 Wallpaper characterized by the following settings:

2. The basis weight of the paper base material is 50 g / m 2 70g / m or more 2 2. The wallpaper according to claim 1, characterized in that the wallpaper is set to:

3. 3. The wallpaper according to claim 1, wherein the foaming agent is added in an amount of 5 parts by mass or more and 20 parts by mass or less relative to 100 parts by mass of a resin component of the foamed resin layer.

4. 4. The wallpaper according to claim 1, wherein the foamed resin layer comprises a non-vinyl chloride resin containing the ethylene-unsaturated carboxylic acid copolymer.

5. the ethylene-unsaturated carboxylic acid copolymer is an ethylene-methyl methacrylate copolymer or an ethylene-methacrylic acid copolymer; The copolymerization ratio of methyl methacrylate (MMA amount) in the ethylene-methyl methacrylate copolymer is within the range of 5% by mass or more and 25% by mass or less, 5. The wallpaper according to claim 4, wherein a copolymerization ratio of acrylic acid (MAA amount) in the ethylene-methacrylic acid copolymer is within the range of 2% by mass or more and 15% by mass or less.

6. A paper substrate; A resin layer containing at least a resin component, a foaming agent, and a filler; A pattern layer having a printed pattern; An anchor coat layer containing an acrylic resin; are layered in order, Immediately after the resin layer is heated and foamed, a film is laminated on the surface of the design layer while applying a certain temperature and a certain pressure, and then cooled to form a surface film layer; The foamed resin layer is made of a non-vinyl chloride resin containing at least one of an ethylene-vinyl acetate copolymer and an ethylene-unsaturated carboxylic acid copolymer, The foamed resin layer has a basis weight of 80 g / m 2 or more and 100 g / m 2 or less. The method for producing wallpaper, wherein the surface film layer is an ethylene-vinyl alcohol copolymer film.

7. 7. The method for manufacturing wallpaper according to claim 6, wherein the foamed resin layer is made of a non-vinyl chloride resin containing an ethylene-unsaturated carboxylic acid copolymer.

8. the ethylene-unsaturated carboxylic acid copolymer is an ethylene-methyl methacrylate copolymer or an ethylene-methacrylic acid copolymer; The copolymerization ratio of methyl methacrylate (MMA amount) in the ethylene-methyl methacrylate copolymer is within the range of 5% by mass or more and 25% by mass or less, 8. The method for producing wallpaper according to claim 7, wherein a copolymerization ratio of acrylic acid (MAA amount) in the ethylene-methacrylic acid copolymer is within a range of 2% by mass or more and 15% by mass or less.

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