wallpaper

Abstract

To provide wallpaper with excellent design and sufficient fire-resistant properties. [Solution] The wallpaper 10 comprises a paper substrate 1, a base resin layer 2 provided on the upper side UP of the paper substrate 1, a printed pattern layer 3 provided on the upper side UP of the base resin layer 2, and a surface protection layer 7 provided on the upper side UP of the printed pattern layer 3. The surface protection layer 7 comprises a first surface protection layer 4 having a thickness of 0.5 μm to 30 μm, and a second surface protection layer 5 containing a pearl pigment 6 having an average particle size of 1.0 μm to 100 μm and having a gloss different from that of the first surface protection layer 4.

Description

[Technical Field]

[0001] This invention relates to wallpaper. [Background technology]

[0002] Traditionally, wallpaper has been used as a surface material for walls and ceilings in houses. For example, there is wallpaper that is made by laminating multiple layers with different gloss levels, and the difference in gloss between the layers gives it a design.

[0003] One example of wallpaper that provides design appeal through differences in gloss is the wallpaper described in Patent Document 1. The wallpaper described in Patent Document 1 is a wallpaper in which a base resin layer, a pattern printing layer with a printed pattern, and a surface protection layer are laminated in this order on a paper substrate. The surface protection layer has a first surface protection layer formed on the pattern printing layer and a second surface protection layer partially formed on the first surface protection layer and having a different gloss from the first surface protection layer. [Prior art documents] [Patent Documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2022-170523 [Overview of the project] [Problems that the invention aims to solve]

[0005] Wallpaper used as a surface material for residential building materials, such as the wallpaper described in Patent Document 1, requires excellent design and sufficient fire resistance. Furthermore, wallpaper used over a wide area such as walls and ceilings requires sufficient print stability and minimal variation in color and gloss depending on the printed area.

[0006] Based on the above circumstances, the present invention aims to provide wallpaper that has excellent design and sufficient fire-retardant properties. [Means for solving the problem]

[0007] To solve the above problems, this invention proposes the following means. The wallpaper of the present invention comprises a paper substrate, a base resin layer provided on the upper side of the paper substrate, a printed pattern layer provided on the upper side of the base resin layer, and a surface protection layer provided on the upper side of the printed pattern layer, wherein the surface protection layer comprises a first surface protection layer having a thickness of 0.5 μm or more and 30 μm or less, and a second surface protection layer containing a pearl pigment having an average particle size of 1.0 μm or more and 100 μm or less, and having a gloss different from that of the first surface protection layer.

[0008] In the above-described wallpaper, the second surface protective layer may be provided on the upper side of the first surface protective layer.

[0009] In the above wallpaper, the second surface protective layer may be positioned in a location that is synchronized with the pattern of the printed pattern layer.

[0010] In the above wallpaper, the paper substrate has a basis weight of 50 g / m². 2 More than 100g / m 2 The following conditions may apply, and the thickness may be 80 μm or more and 150 μm or less. The base resin layer may be formed of a thermoplastic resin containing at least one of vinyl chloride resin, polyolefin resin, and ethylene vinyl acetate copolymer resin. [Effects of the Invention]

[0011] According to the present invention, it is possible to provide wallpaper that has excellent design and sufficient fire-retardant properties. [Brief explanation of the drawing]

[0012] [Figure 1] This is a schematic cross-sectional view showing the wallpaper according to this embodiment. [Modes for carrying out the invention]

[0013] One embodiment of the present invention will be described with reference to the drawings. Figure 1 is a schematic cross-sectional view showing the wallpaper 10 according to this embodiment. The wallpaper 10 includes a paper base material 1, a base resin layer 2, a printed pattern layer 3, and a surface protection layer 7.

[0014] In this embodiment, as shown in FIG. 1, the thickness direction of the wallpaper 10 is defined as the "vertical direction V", the side where the paper base material 1 of the wallpaper 10 is provided is defined as the "lower side LO" in the vertical direction V, and the side opposite to the lower side LO is defined as the "upper side UP" in the vertical direction V.

[0015] The paper base material 1 is a layer provided on the lower side LO of the wallpaper 10. As the paper base material 1, for example, a known fiber sheet used as a paper base material for wallpaper, such as ordinary paper for wallpaper or backing paper, can be adopted. The basis weight of the paper base material 1 is preferably 50 g / m 2 or more and 100 g / m 2 or less. Also, the thickness of the paper base material 1 is preferably 80 μm or more and 150 μm or less. Thereby, the wallpaper 10 can obtain sufficient rigidity and suppress the occurrence of curling of the wallpaper 10. Also, the nonflammability of the wallpaper 10 can be ensured.

[0016] The base resin layer 2 is a layer provided on the upper side UP of the paper base material 1. As the material of the base resin layer 2, an aqueous emulsion resin or a vinyl chloride resin can be adopted. The coating amount of the base resin layer 2 is preferably 80 g / m 2 or more and 260 g / m 2 or less from the viewpoint of ensuring the nonflammability of the wallpaper 10. For example, when a vinyl chloride resin is adopted as the base resin layer 2, the coating amount of the base resin layer 2 is limited by the degree of polymerization of the vinyl chloride resin. Also, the degree of polymerization of the vinyl chloride resin is preferably 600 or more. By setting the degree of polymerization of the vinyl chloride resin to 600 or more, the wallpaper 10 can obtain sufficient strength.

[0017] Also, as the material of the base resin layer 2, a polyolefin resin or an ethylene copolymer having ethylene and a component other than ethylene as monomers can be adopted. In the following description, an ethylene copolymer having ethylene and a component other than ethylene as monomers is also simply referred to as an "ethylene copolymer".

[0018] In addition, as the material of the base resin layer 2, ethylene-vinyl acetate copolymer (EVA) resin, ethylene-methyl methacrylate copolymer (EMMA), ethylene-ethyl acrylate copolymer (EEA), ethylene-methyl acrylate copolymer (EMA), ethylene-methacrylic acid copolymer (EMAA), ethylene-α-olefin copolymer, etc. can be adopted. The base resin layer 2 is preferably formed of a thermoplastic resin containing at least one of vinyl chloride resin, polyolefin resin, and ethylene vinyl acetate copolymer resin.

[0019] The base resin layer 2 may contain a foaming agent. As the foaming agent to be contained in the base resin layer 2, known foaming agents used for wallpapers such as thermally expandable microcapsules, azo-based, hydrazide-based, nitroso-based, ADCA (azodicarbonamide foaming agent), sodium bicarbonate, etc. can be adopted.

[0020] For example, when thermally expandable microcapsules are mixed into the base resin layer 2 as a foaming agent, the thermally expandable microcapsules foam by applying heat, and the volume of the base resin layer 2 expands. By foaming the base resin layer 2 with a foaming agent, the thickness of the wallpaper 10 increases, so sufficient unevenness concealability can be imparted to the wallpaper 10. From the viewpoint of performance such as foaming ratio and strength, it is preferable to adopt thermally expandable microcapsules as the foaming agent to be contained in the base resin layer 2.

[0021] When ADCA and sodium bicarbonate are used as the foaming agent to be contained in the base resin layer 2, for example, it is preferable to make the ratio of ADCA and sodium bicarbonate 3:1 to 1:3 and mix them so that the total of the two is within the range of 1 part or more and 4 parts or less with respect to 100 parts of the vinyl chloride-based resin. Thereby, it becomes possible to secure the foaming ratio and prevent the roughness of the foamed surface. The foaming agent can be added to the base resin layer 2 in an appropriate amount depending on the thickness and foaming ratio of the base resin layer 2. For example, it is preferably within the range of 1 part or more and 20 parts or less, and more preferably within the range of 5 parts or more and 15 parts or less with respect to 100 parts by weight of the resin.

[0022] The base resin layer 2 can be appropriately mixed with plasticizers, fillers, foaming agents, stabilizers (foaming stabilizers), viscosity reducers, and other organic additives or inorganic powders depending on the application. By mixing in plasticizers, fillers, etc., properties such as flexibility and heat resistance can be imparted to the base resin layer 2.

[0023] When mixing inorganic powder into the base resin layer 2, examples of inorganic powders that can be used include calcium carbonate, aluminum hydroxide, magnesium hydroxide, silica sand, talc, silica compounds, magnesium silicate, zinc borate, or titanium dioxide. The inorganic powder is mixed in an amount of 40 to 150 parts per 100 parts of resin, for example.

[0024] When mixing stabilizers into the base resin layer 2, it is preferable to mix two types of stabilizers (barium salt-based and zinc salt-based) in a ratio of 1:4 to 4:1, and to ensure that the total amount of the two types is within the range of 1 to 4 parts per 100 parts of the vinyl chloride resin. This makes it possible to impart thermal stability to the base resin layer 2 and increase the foam thickness.

[0025] As a method for laminating the base resin layer 2, known coating methods such as knife coating, nozzle coating, die coating, lip coating, comma coating, gravure coating, rotary screen coating, or reverse roll coating can be employed.

[0026] The printed pattern layer 3 is a layer provided on the upper side UP of the base resin layer 2. In this embodiment, the printed pattern layer 3 has a first pattern forming section 3a and a second pattern forming section 3b. The printed pattern layer 3 is a layer formed by printing a pattern such as wood grain, stone pattern, or sand pattern.

[0027] The first pattern-forming section 3a and the second pattern-forming section 3b form a pattern on the upper side UP of the base resin layer 2, for example, by having pigments of different colors contained in the ink forming the first pattern-forming section 3a and the ink forming the second pattern-forming section 3b.

[0028] As a method for forming the printed pattern layer 3, known printing methods such as gravure printing, offset printing, flexographic printing, screen printing, or inkjet printing can be employed. Furthermore, known printing inks suitable for the adopted printing method can be used in the first pattern forming section 3a and the second pattern forming section 3b. For example, non-foaming inks, foaming inks mainly composed of aqueous emulsion resin, or foaming inks mainly composed of vinyl chloride paste resin can be used.

[0029] There are no particular limitations on the thickness of the printed pattern layer 3, but from the viewpoint of the non-combustibility of the wallpaper 10, it is preferable to have a thickness of 0.5 μm or more and 3.0 μm or less.

[0030] The surface protection layer 7 comprises a first surface protection layer (matte resin layer) 4 and a second surface protection layer (gloss resin layer) 5. In this embodiment, the first surface protection layer 4 is a layer provided above the printed pattern layer 3. The second surface protection layer 5 is a layer provided above the first surface protection layer 4.

[0031] The first surface protective layer 4 is preferably made of a material that is transparent or semi-transparent enough to allow the pattern of the printed pattern layer 3 to be seen through. As the first surface protective layer 4, polyolefin resins, acrylic resins, polyvinyl alcohol resins, fluororesins, thermosetting resins having urethane bonds, or ionizing radiation curable resins such as acrylic resins can be used.

[0032] As a method for forming the first surface protective layer 4, known printing methods such as gravure printing, offset printing, flexographic printing, screen printing, or inkjet printing can be employed. Furthermore, the first surface protective layer 4 may be formed using a known coating apparatus.

[0033] The second surface protective layer 5 is preferably made of a material that is transparent or semi-transparent enough to allow the pattern of the printed pattern layer 3 to be seen through the first surface protective layer 4. The second surface protective layer 5 can be made of polyolefin resin, acrylic resin, polyvinyl alcohol resin, fluororesin, thermosetting resin with urethane bonding, or ionizing radiation curable resin such as acrylic resin.

[0034] As a method for forming the second surface protective layer 5, known printing methods such as gravure printing, offset printing, flexographic printing, screen printing, or inkjet printing can be employed. Alternatively, the second surface protective layer 5 may be formed using a known coating apparatus.

[0035] In this embodiment, the first surface protection layer 4 covers the entire printed pattern layer 3 from above UP. The second surface protection layer 5 is partially provided above the first surface protection layer 4 UP. The second surface protection layer 5 is positioned on the upper surface of the first surface protection layer 4 in a position synchronized with the pattern of the printed pattern layer 3. For example, in a plan view from above UP, the second surface protection layer 5 is positioned to overlap with the second pattern forming portion 3b.

[0036] The first surface protective layer 4 and the second surface protective layer 5 have different gloss levels. One method for creating a difference in gloss between the first surface protective layer 4 and the second surface protective layer 5 is to add a matting agent to either the first surface protective layer 4 or the second surface protective layer 5.

[0037] For example, if a matting agent is added to the first surface protective layer 4 but not to the second surface protective layer 5, the second surface protective layer 5 will have a higher gloss than the first surface protective layer 4. Different amounts of matting agents may be added to the first surface protective layer 4 and the second surface protective layer 5 to the extent that a difference in gloss can be created between them. The difference in gloss between the first surface protective layer 4 and the second surface protective layer 5 can be used to create a visually three-dimensional effect by utilizing an optical illusion, thereby improving the design of the wallpaper 10.

[0038] The second surface protective layer 5 contains pearl pigment (particle portion) 6. The average particle size of the pearl pigment 6 is between 1 μm and 100 μm. By making the average particle size of the pearl pigment 6 1 μm or more, sufficient brightness can be imparted to the second surface protective layer 5, and a wallpaper 10 with excellent design properties can be realized due to the difference in gloss between the first surface protective layer 4 and the second surface protective layer 5.

[0039] Furthermore, by making the average particle size of the pearl pigment 6 100 μm or less, the printing stability of the second surface protective layer 5 can be improved. By improving the printing stability of the second surface protective layer 5, the brightness stability provided by the second surface protective layer 5 can be improved, and variations in color and brightness on the surface of the wallpaper 10 (the upper side UP) can be suppressed.

[0040] The second surface protective layer 5 has a high gloss due to the pearl pigment 6, and therefore has a higher gloss than the first surface protective layer 4. The wallpaper 10 has excellent design qualities due to the gloss-matt finish created by the low-gloss matte first surface protective layer 4 and the high-gloss gloss second surface protective layer 5.

[0041] For example, if the printed pattern layer 3 has a wood grain pattern and the second pattern forming section 3b forms the vascular portion of the wood grain pattern, by placing the second surface protection layer 5 at a position corresponding to the second pattern forming section 3b, the difference in gloss between the first surface protection layer 4 and the second surface protection layer 5 gives the vascular portion a visually three-dimensional effect, making it possible to create a wood grain wallpaper 10 that more closely resembles the appearance of natural wood.

[0042] Here, the thickness of the first surface protective layer 4 is between 0.5 μm and 30 μm. By making the thickness of the first surface protective layer 4 0.5 μm or more, a sufficient matte finish can be given to the first surface protective layer 4, and a high level of design appeal can be given to the wallpaper 10 due to the difference in gloss between the first surface protective layer 4 and the second surface protective layer 5.

[0043] Furthermore, by making the thickness of the first surface protective layer 4 30 μm or less, sufficient fire-retardant properties can be imparted to the wallpaper 10. From the viewpoint of the fire-retardant properties of the wallpaper 10, it is more preferable that the thickness of the first surface protective layer 4 be 7 μm or less. Fire-retardant properties are properties evaluated by the heat generation test method (compliant with ISO 5660) stipulated in the Building Standards Act.

[0044] The thickness of the second surface protective layer 5 is preferably 1 μm or more and 70 μm or less, from the viewpoint of the design and non-combustibility of the wallpaper 10.

[0045] The wallpaper 10 of this embodiment comprises a paper substrate 1, a base resin layer 2 provided on the upper side UP of the paper substrate 1, a printed pattern layer 3 provided on the upper side UP of the base resin layer 2, and a surface protection layer 7 provided on the upper side UP of the printed pattern layer 3. The surface protection layer 7 comprises a first surface protection layer 4 having a thickness of 0.5 μm to 30 μm, and a second surface protection layer 5 containing a pearl pigment 6 with an average particle size of 1.0 μm to 100 μm, and having a gloss different from that of the first surface protection layer 4.

[0046] With this configuration, the wallpaper 10 can be given excellent design properties due to the difference in gloss between the first surface protective layer 4 and the second surface protective layer 5, and sufficient fire resistance due to the thickness of the first surface protective layer 4 being 30 μm or less, thereby providing wallpaper 10 with excellent design properties and sufficient fire resistance. In addition, the print stability of the wallpaper 10 can be improved by having an average particle size of 100 μm or less for the pearl pigment 6.

[0047] Although one embodiment of the present invention has been described in detail above with reference to the drawings, the specific configuration is not limited to this embodiment, and design changes and the like that do not depart from the spirit of the present invention are also included. Furthermore, the components shown in the above-described embodiment and the following modifications can be combined as appropriate.

[0048] (Variation 1) In the above embodiment, the second surface protective layer 5 is positioned in a location corresponding to the second pattern forming section 3b, but the configuration of the second surface protective layer is not limited thereto. The second surface protective layer does not have to be positioned in a location corresponding to the second pattern forming section 3b. In other words, the second surface protective layer does not have to be positioned in a location synchronized with the pattern of the printed pattern layer 3.

[0049] The present invention will be described in detail with reference to the following examples. The present invention is not limited to the following examples.

[0050] (Example 1) For paper substrate 1, the coating amount is 65 g / m². 2Furthermore, plain paper with a thickness of 110 μm (for example, WK665IHT manufactured by KJ Special Paper Co., Ltd.) was prepared. A paste made by adding 55 parts plasticizer and 150 parts filler to polyvinyl chloride resin (for example, PQLT manufactured by Shin-Daiichi Vinyl Chloride Co., Ltd.) was applied by coating at a rate of 200 g / m². 2 A base resin layer 2 was formed by applying it to the upper side UP of the paper substrate 1. A water-based ink was printed onto the upper side UP of the base resin layer 2 by gravure printing to form a printed pattern layer 3 with a thickness of 1 μm.

[0051] A matte resin was printed on the upper side of the printed pattern layer 3 by gravure printing to form a first surface protective layer 4 with a thickness of 7 μm. A resin containing pearl pigment 6 with an average particle size of 60 μm was printed by gravure printing at a position synchronized with the second pattern forming area 3b on the upper side of the first surface protective layer 4 to form a second surface protective layer 5 with a thickness of 40 μm. The pearl pigment 6 was added in an amount such that the ratio of "resin material forming the second surface protective layer 5:pearl pigment" was 10:1.

[0052] The layers from the paper substrate 1 to the second surface protective layer 5 were then laminated and heated to a surface temperature of 170°C, after which they were cooled and dried to obtain the wallpaper 10 of Example 1.

[0053] (Example 2) Wallpaper 10 of Example 2 was obtained by the same method as in Example 1, except that the average particle size of the pearl pigment 6 in the second surface protective layer 5 was set to 1 μm.

[0054] (Example 3) Wallpaper 10 of Example 3 was obtained by the same method as in Example 1, except that the average particle size of the pearl pigment 6 in the second surface protective layer 5 was set to 100 μm.

[0055] (Example 4) Wallpaper 10 of Example 4 was obtained by the same method as in Example 1, except that the thickness of the first surface protective layer 4 was set to 0.5 μm.

[0056] (Example 5) Wallpaper 10 of Example 5 was obtained by the same method as in Example 1, except that the thickness of the first surface protective layer 4 was set to 8 μm.

[0057] (Example 6) Wallpaper 10 of Example 6 was obtained in the same manner as in Example 1, except that the thickness of the first surface protective layer 4 was set to 30 μm.

[0058] (Comparative Example 1) Comparative Example 1 wallpaper was obtained by the same method as in Example 1, except that the average particle size of the pearl pigment in the second surface protective layer was set to 0.5 μm.

[0059] (Comparative Example 2) Comparative Example 2 wallpaper was obtained using the same method as in Example 1, except that the average particle size of the pearl pigment in the second surface protective layer was set to 110 μm.

[0060] (Comparative Example 3) Comparative Example 3 wallpaper was obtained using the same method as in Example 1, except that the first surface protective layer was not provided.

[0061] (Comparative Example 4) Comparative Example 4 wallpaper was obtained using the same method as in Example 1, except that the second surface protective layer did not contain pearl pigment.

[0062] (Comparative Example 5) Comparative Example 5 wallpaper was obtained by the same method as in Example 1, except that the first and second surface protective layers were not provided.

[0063] (Comparative Example 6) Comparative Example 6 wallpaper was obtained using the same method as in Example 1, except that the thickness of the first surface protective layer was set to 0.4 μm.

[0064] (Comparative Example 7) Comparative Example 7 wallpaper was obtained using the same method as in Example 1, except that the thickness of the first surface protective layer was set to 31 μm.

[0065] (Experiment 1) A design evaluation test was conducted on the wallpapers of Examples 1-6 and Comparative Examples 1-7. In the design evaluation test, 10 examiners conducted a sensory evaluation of the design of the wallpapers and assessed the degree of their appearance.

[0066] The evaluation criteria were as follows: each examiner gave each wallpaper a rating on one of the following two levels, and the rating chosen by the majority of examiners was used as the rating for that wallpaper. Wallpapers that received a rating of "〇 (Good)" based on this evaluation criterion were deemed to have passed.

[0067] ○ (Good): The brightness is high, and the difference in brightness is clear, giving it a more aesthetically pleasing design compared to conventional wallpapers. × (Poor): Brightness and brightness differences are not perceived, or only brightness is perceived, but it feels no different from conventional wallpaper.

[0068] (Experiment 2) Print stability evaluation tests were conducted on the wallpapers of Examples 1-6 and Comparative Examples 1-7. In the print stability evaluation tests, 3,000 m of each wallpaper was formed by printing, and the brightness and color stability of each wallpaper after printing were visually confirmed and evaluated.

[0069] The evaluation criteria consisted of two levels, with a circle (〇) indicating a passing grade. 〇 (Good): There is no variation in color or brightness across all parts of the printout, from the start to the end of printing. × (Poor): There is a noticeable difference in color and brightness between the areas printed immediately after the start of printing and the areas printed immediately before the end of printing.

[0070] (Experiment 3) Fire resistance evaluation tests were conducted on the wallpapers of Examples 1-6 and Comparative Examples 1-7. In the fire resistance evaluation tests, the following fire resistance material tests and semi-fire resistance material tests were performed based on the heat generation test method stipulated in the Building Standards Act (in accordance with ISO 5660).

[0071] In the non-combustible material test, a heat release test was conducted on the wallpaper using a cone calorimeter C4 (a combustion tester manufactured by Toyo Seiki Seisakusho Co., Ltd.) at 50 kW / m 2 for 20 minutes of heating.

[0072] In the semi-non-combustible material test, a heat release test was conducted on the wallpaper using a cone calorimeter C4 at 50 kW / m 2 for 10 minutes of heating.

[0073] The criteria for passing and failing in the non-combustible material test and the semi-non-combustible material test are as follows. Pass: Meet all of the items of "total heat release is 8.0 MJ or less", "the maximum heat release rate does not exceed 200 kW / m 2 continuously for 10 seconds or more", and "there are no cracks and holes penetrating to the fire-hazardous back surface". Fail: If there is one or more items not satisfied among "total heat release is 8.0 MJ or less", "the maximum heat release rate does not exceed 200 kW / m 2 continuously for 10 seconds or more", and "there are no cracks and holes penetrating to the fire-hazardous back surface".

[0074] The evaluation criteria in Experiment 3 (non-combustible performance evaluation test) were divided into three levels, and × was regarded as a failure. 〇 (Good): Both the non-combustible material test and the semi-non-combustible material test passed. △ (Average): Only the semi-non-combustible material test passed. × (Poor): Both the non-combustible material test and the semi-non-combustible material test failed.

[0075] (Experimental results) The results of Experiment 1-3 are shown in Table 1. Table 1 shows the presence or absence and thickness of the first surface protective layer (matte resin layer) and the presence or absence and average particle size of the pearl pigment contained in the second surface protective layer for the wallpapers of Example 1-6 and Comparative Example 1-7. In the presence or absence of the matte resin layer, "Present" indicates that the wallpaper has a matte resin layer, and "Absent" indicates that the wallpaper does not have a matte resin layer. In the presence or absence of pearl pigment, "Present" indicates that the second surface protective layer contains pearl pigment, and "Absent" indicates that the second surface protective layer does not contain pearl pigment.

[0076] The wallpaper 10 of Examples 1-6, which comprises a first surface protective layer (matte resin layer) 4 with a thickness of 0.5 μm to 30 μm and a second surface protective layer 5 containing a pearl pigment 6 with an average particle size of 1.0 μm to 100 μm, showed good results in all of Experiments 1-3.

[0077] Examples 5-6, in which the thickness of the matte resin layer 4 was greater than 7 μm, performed worse than wallpaper 10 in Examples 1-4, in Experiment 3, but were still deemed acceptable.

[0078] Comparative Example 1, in which the average particle size of the pearl pigment was less than 1.0 μm; Comparative Example 3, which did not have a matte resin layer; Comparative Example 4, in which the second surface protective layer did not contain pearl pigment; Comparative Example 5, which did not have a matte resin layer or a second surface protective layer; and Comparative Example 6, in which the thickness of the matte resin layer was less than 0.5 μm, all failed Experiment 1.

[0079] Comparative Example 2, in which the average particle size of the pearl pigment was greater than 100 μm, failed Experiment 2. Similarly, Comparative Example 7, in which the thickness of the matte resin layer was greater than 30 μm, failed Experiment 3.

[0080] [Table 1] [Explanation of Symbols]

[0081] 10 Wallpaper 1 Paper base material 2 Base resin layer 3. Printed pattern layer 7 Surface protective layer 4. First surface protective layer (matte resin layer) 5. Second surface protective layer (gloss resin layer) 6. Pearl pigment (particle portion) V vertical direction UP upper side LO (lower side)

Claims

1. Paper substrate and A base resin layer provided on the upper side of the paper substrate, The printed pattern layer provided on the upper side of the base resin layer, A surface protective layer provided on the upper side of the printed pattern layer, Equipped with, The aforementioned surface protective layer is A first surface protective layer having a thickness of 0.5 μm or more and 30 μm or less, A pearl pigment having an average particle size of 1.0 μm or more and 100 μm or less, and a second surface protective layer having a gloss different from that of the first surface protective layer, Having, wallpaper.

2. The second surface protective layer is provided on the upper side of the first surface protective layer. The wallpaper according to claim 1.

3. The second surface protective layer is positioned in a location that is synchronized with the pattern of the printed pattern layer. The wallpaper according to claim 2.

4. The aforementioned paper substrate has a basis weight of 50 g / m². ２ More than 100g / m ２ The following applies, and the thickness is between 80 μm and 150 μm: The substrate resin layer is formed of a thermoplastic resin containing at least one of vinyl chloride resin, polyolefin resin, and ethylene vinyl acetate copolymer resin. Wallpaper according to any one of claims 1 to 3.

Images