Bed cosmetic sheet, method for producing the same, floor covering material, and method for producing the same

Abstract

To provide a floor decorative sheet, a production method thereof, a floor decorative material, and a production method thereof, the floor decorative sheet being excellent in scratch resistance, wear resistance, the decorative sheet capable of being made thin, light, and comprising flexibility.SOLUTION: A floor decorative sheet is formed by laminating sequentially, a primer layer 60, a printing raw fabric layer 20 formed of an olefin resin, a pattern figure layer 30 printed on the raw fabric layer 20, an upper resin layer 40 formed of a transparent polypropylene resin, and a surface protective layer 50 on which an embossment figure 51 is formed. A thickness of the upper resin layer 40 is equal to or greater than 150 μm, and the primer layer 60 and the printing raw fabric layer 20 contact. A thickness of the printing raw fabric layer 20 is equal to or greater than 40 μm and 100 μm or smaller, and a thickness of the upper resin layer 40 may be equal to or smaller than 200 μm.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a floor decorative sheet used for, for example, a non-vinyl chloride floor material for heavy walking, a method for manufacturing the same, a floor decorative material, and a method for manufacturing the same.

Background Art

[0002] Conventionally, a "decorative sheet" having a six-layer structure is known, in which (1) a primer layer, (2) a base resin layer formed of a transparent polypropylene resin, (3) a printing stock layer formed of a polyethylene resin, (4) a pattern layer printed on the printing stock layer, (5) a top resin layer formed of a transparent polypropylene resin, and (6) a surface protection layer with an embossed pattern are sequentially laminated (see paragraph

[0010] and FIG. 1 of Patent Document 1). The thickness of the conventional base resin layer is 125 μm or more and 150 μm or less, the thickness of the printing stock layer is 55 μm or more and 100 μm or less, and the thickness of the top resin layer is 150 μm or more and 200 μm or less (see paragraphs

[0013] ,

[0014] , and

[0021] of Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The above-described conventional "decorative sheet" had excellent scratch resistance and abrasion resistance, but had a six-layer structure, resulting in a complex layer structure. Simplification of the structure, facilitation of manufacturing, and reduction of thickness were desired. The present invention focuses on the above points, and aims to have excellent scratch resistance and abrasion resistance, and to simplify the layer structure, facilitate manufacturing, and reduce the thickness, weight, and increase the flexibility of the decorative sheet.

Means for Solving the Problem

[0005] The floor decorative sheet according to one aspect of the present invention includes a primer layer, a printing stock layer formed of an olefin resin, a pattern layer printed on the printing stock layer, a top resin layer formed of a transparent polypropylene resin, and a surface protection layer with an embossed pattern, which are sequentially laminated. The thickness of the top resin layer is 150 μm or more, and the primer layer and the printing stock layer are in contact with each other.

[0006] Further, the floor decorative sheet according to one aspect of the present invention is characterized in that the thickness of the printing stock layer is 40 μm or more and 100 μm or less, and the thickness of the top resin layer is 200 μm or less. The floor decorative sheet according to one aspect of the present invention is characterized in that the floor decorative sheet satisfies the conditions of CLASS 33 of EN16511:2014(E) even after 2000 rotations in an abrasion resistance test conforming to European standard EN13329, Annex E.

[0007] The manufacturing method of the floor decorative sheet according to one aspect of the present invention is characterized by forming a printing stock layer using an olefin resin, forming a top resin layer with a thickness of 150 μm or more on the surface of the printing stock layer, forming a surface protection layer on the surface of the top resin layer, embossing an embossed pattern on the surface of the surface protection layer, and forming a primer layer in contact with the back surface of the printing stock layer.

[0008] The floor decorative material according to one aspect of the present invention is a floor decorative material obtained by attaching a floor decorative sheet to the surface of a floor base material. The floor decorative sheet includes a primer layer, a printing stock layer formed of an olefin resin, a pattern layer printed on the printing stock layer, a top resin layer formed of a transparent polypropylene resin, and a surface protection layer with an embossed pattern, which are sequentially laminated. The thickness of the top resin layer is 150 μm or more, and the primer layer and the printing stock layer are in contact with each other.

[0009] The manufacturing method of the floor decorative material according to one aspect of the present invention is a manufacturing method of a floor decorative material in which a floor decorative sheet is attached to the surface of a floor base material. An olefin-based resin is used to form a printing master layer, a top resin layer with a thickness of 150 μm or more is formed on the surface of the printing master layer, a surface protection layer is formed on the surface of the top resin layer, a surface embossed pattern is imparted to the surface of the surface protection layer, a primer layer that contacts the back surface of the printing master layer is formed to obtain a floor decorative sheet, and the floor decorative sheet is attached to the surface of the floor base material through the primer layer. This is the gist of the present invention.

Effect of the Invention

[0010] According to one aspect of the present invention, it is possible to provide a floor decorative sheet having excellent scratch resistance and abrasion resistance, and having a thinner, lighter, and more flexible decorative sheet.

Brief Description of the Drawings

[0011]

Figure 1

Figure 2

Figure 3

Mode for Carrying Out the Invention

[0012] (Floor Decorative Sheet 10 According to Embodiment 1) In FIG. 1, reference numeral 10 denotes a floor decorative sheet according to Embodiment 1, which is used, for example, for a non-chlorinated vinyl floor material for heavy walking. The floor decorative sheet 10 has the following layers sequentially laminated. Note that each of the following layers will be described later. (1) Primer Layer 60 (2) Printing Master Layer 20 (3) Pattern Layer 30 (4) Top Resin Layer 40 (5) Surface Protection Layer 50

[0013] (Printing Master Layer 20) The printing master layer 20 is a base sheet intended to be printed on the surface, and is formed of, for example, an olefin resin. The printing master layer 20 is composed of, for example, a resin film. The resin component of the resin film is not particularly limited, but for example, a polyethylene resin or a polypropylene resin is preferable. The thickness of the printing master layer 20 is preferably, for example, about 40 μm or more and 100 μm or less.

[0014] Examples of polyolefin resins include olefin-based low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE) obtained by copolymerizing α-olefin and ethylene, medium-density polyethylene (MDPE), high-density polyethylene (HDPE), and polypropylene and cycloolefin polymers having homopolymers, random copolymers, block copolymers, etc., cycloolefin copolymers obtained by copolymerizing cycloolefins and olefins, and ethylene-vinyl acetate copolymers obtained by copolymerizing the above olefins and vinyl acetate, and ethylene-methyl acrylate copolymer (EMA), ethylene-ethyl acrylate copolymer (EEA), ethylene-butyl acrylate copolymer (EBA), ethylene-methacrylic acid copolymer (EMAA), etc. obtained by modifying the side chains of olefins. Among them, single or a plurality can be selected and used as appropriate.

[0015] Note that a paste layer for improving the adhesiveness between the printing master layer 20 and the pattern layer 30 may be formed on the surface of the printing master layer 20. As the paste layer, for example, a resin obtained by mixing a two-component urethane resin and a vinyl chloride resin can be used. A pigment is added to the resin for coloring. The paste layer is formed, for example, by coating a resin for forming the paste layer on the printing master layer 20. The basis weight after drying is, for example, 1 g / m 2 to 3 g / m 2 preferably, for example, 2 g / m 2 or less.

[0016] (Pattern layer 30) The pattern layer 30 is printed on the surface of the printing master layer 20. The pattern layer 30 is a pattern layer for imparting design characteristics to the floor decorative sheet 10. The pattern layer 30 can be formed, for example, by printing a pattern. The thickness of the pattern layer 30 varies depending on the type of the pattern, but generally, it is preferably in the range of 0.1 μm or more and 10 μm or less.

[0017] Examples of the pattern include a wood grain pattern, a stone grain pattern, a sand grain pattern, a tile pasting pattern, a brick stacking pattern, a cloth pattern, a leather grain pattern, geometric figures, characters, symbols, abstract patterns, and the like. The pattern can be selected according to the purpose. Examples of the printing method of the pattern include gravure printing, flexographic printing, silk screen printing, offset printing, and the like. As the printing ink, for example, a printing ink containing a colorant, a binder resin, and a solvent can be used. These inks may be known or commercially available ones.

[0018] As the colorant, for example, a pigment can be appropriately used. Regarding the pigment, either an inorganic pigment or an organic pigment can be used. Examples of the inorganic pigment include titanium oxide, zinc white, carbon black, black iron oxide, yellow iron oxide, lead yellow, molybdate orange, cadmium yellow, nickel titanium yellow, chromium titanium yellow, iron oxide (handle pattern), cadmium red, ultramarine blue, dark blue, cobalt blue, chromium oxide, cobalt green, aluminum powder, bronze powder, mica titanium, zinc sulfide, and the like.

[0019] In addition, examples of the organic pigment include aniline black, perylene black, azo-based (azo lake, insoluble azo, condensed azo), polycyclic (isoindolinone, isoindoline, quinophthalone, perinone, flavanthrone, anthrapyrimidine, anthraquinone, quinacridone, perylene, diketopyrrolopyrrole, dibromoanthrone, dioxazine, thioindigo, phthalocyanine, indanthrone, halogenated phthalocyanine), etc. The content of the pigment is preferably about 10 to 50 parts by mass, more preferably about 15 to 30 parts by mass, based on 100 parts by mass of the resin component.

[0020] The binder resin can be set according to the type of the resin in the lower layer that forms the pattern layer 30. Examples of the binder resin include acrylic resin, styrene resin, polyester resin, urethane resin, chlorinated polyolefin resin, vinyl chloride-vinyl acetate copolymer resin, polyvinyl butyral resin, alkyd resin, petroleum resin, ketone resin, epoxy resin, melamine resin, fluororesin, silicone resin, cellulose derivative, rubber resin, etc.

[0021] Examples of the solvent (or dispersion medium) include petroleum-based organic solvents such as hexane, heptane, octane, toluene, xylene, ethylbenzene, cyclohexane, methylcyclohexane; ester-based organic solvents such as ethyl acetate, butyl acetate, 2-methoxyethyl acetate, 2-ethoxyethyl acetate; alcohol-based organic solvents such as methyl alcohol, ethyl alcohol, normal propyl alcohol, isopropyl alcohol, isobutyl alcohol, ethylene glycol, propylene glycol; ketone-based organic solvents such as acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone; ether-based organic solvents such as diethyl ether, dioxane, tetrahydrofuran; chlorinated organic solvents such as dichloromethane, carbon tetrachloride, trichloroethylene, tetrachloroethylene; water, etc. These solvents (or dispersion media) can be used alone or in a mixture state.

[0022] (Upper resin layer 40) The upper resin layer 40 is formed of a polypropylene resin having transparency. The upper resin layer 40 is a backing layer for the purpose of impact absorption (buffering), etc., and is also an adhesive layer for adhering the pattern layer 30 and the surface protection layer 50. Further, the upper resin layer 40 clarifies the pattern when forming the pattern layer 30 and improves the scratch resistance of the pattern layer 30. The resin component of the upper resin layer 40 is not particularly limited, but for example, a polypropylene resin having transparency is preferable. The thickness of the upper resin layer 40 is preferably, for example, 150 μm or more, and here, preferably about 150 μm or more and 200 μm or less in order to clear the abrasion resistance test (2000 rotations).

[0023] (Surface protection layer 50) An embossed pattern 51 is formed on the surface side of the surface protection layer 50. The surface protection layer 50 is a top coat layer for the purpose of gloss adjustment and / or protection of the pattern layer 30. The resin component of the surface protection layer 50 is not particularly limited, but for example, an ultraviolet (UV) curable resin is preferable. The thickness of the surface protection layer 50 is not limited, but for example, preferably about 0.1 μm or more and 15 μm or less.

[0024] In the case of the surface protection layer 50 for the purpose of gloss adjustment, for example, there is a surface protection layer 50 containing a known filler such as silica. As a method for forming the surface protection layer 50, for example, a known method such as gravure printing can be adopted. In the case where sufficient adhesion between the pattern layer 30 and the surface protection layer 50 cannot be obtained, the surface protection layer 50 can also be provided after subjecting the surface of the pattern layer 30 to an easy adhesion treatment (primer treatment). Further, when forming the surface protection layer 50 for the purpose of surface strength (scratch resistance, etc.), stain resistance, protection of the pattern layer 30, etc. of the floor decorative sheet 10, those containing an ionizing radiation curable resin as a resin component are suitable. As the ionizing radiation curable resin, for example, those that are radically polymerized (cured) by electron beam irradiation are preferable.

[0025] (Embossed pattern 51) An embossing process (concavo-convex shaping using an embossing plate) is applied to the surface of the surface protection layer 50, which is the outermost layer of the floor decorative sheet 10, to form (apply) the embossed pattern 51 on the surface of the floor decorative sheet 10. The floor decorative sheet 10 can be configured to give a more tangible three-dimensional feeling due to the embossed pattern 51 formed on the surface of the surface protection layer 50. In the embossing process, for example, the floor decorative sheet 10 may be passed between an embossing roll and a rubber backup roll with a hardness of 50 degrees or more and less than 90 degrees to apply a concavo-convex shape. As a method for measuring the hardness, for example, JIS K-6301 Type A can be used. Examples of the embossed pattern 51 include wood grain board conduit grooves, stone slab surface irregularities, cloth surface textures, satin finish, sand finish, hairline, and multi-line grooves.

[0026] (Primer layer 60) The primer layer 60 is formed on the back surface of the printing stock layer 20. The primer layer 60 is an anchor coat layer aimed at improving the adhesiveness of the resin. In addition to improving adhesiveness, the functions of the primer layer 60 also include surface stabilization after surface treatment, corrosion prevention of the metal surface, imparting adhesiveness, and preventing deterioration of the adhesive. For ordinary film sheets for building materials, it is common to directly apply a primer to the printing stock layer 20, and there are no problems with ordinary polyolefin and polyester-based stocks. As the primer (undercoat) for forming the primer layer 60, for example, a two-component urethane resin-based primer can be used. The type of primer varies depending on the adherend and application. Examples of the adherend include plate-shaped members made of a metal-based or wood-based material.

[0027] Examples of the metal system include aluminum, steel, stainless steel, composite panels, etc. Examples of the composite panel include those provided with a resin layer as a core material and metal plates (such as aluminum, galvanized steel, stainless steel, etc.) attached to both surfaces of the resin layer. Examples of the wood system include MDF (medium density fiberboard), plywood, particle board, etc. Note that the primer layer 60 may be formed not only on the back surface of the printing stock layer 20 but also between each of the pattern layer 30, the upper resin layer 40, and the surface protection layer 50.

[0028] (Manufacturing method of the floor decorative sheet 10) The floor decorative sheet 10 having the above-described configuration is manufactured by the following procedure. (1) Formation of the printing stock layer 20 The printing stock layer 20 is formed using a polyethylene resin to a thickness of 40 μm or more and 100 μm or less. (2) Formation of the pattern layer 30 The pattern layer 30 is printed and formed on the surface of the printing stock layer 20 using a two-component urethane resin / vinyl chloride-vinyl acetate copolymer resin binder ink to a basis weight after drying of the wood grain pattern of 1 g / m 2 or more and 5 g / m 2 or less, preferably 3 g / m 2 or less. (3) Formation of the upper resin layer 40 The upper resin layer 40 is formed by extruding and laminating a transparent polypropylene resin on the surface of the pattern layer 30 to a thickness of 150 μm or more, preferably 150 μm or more and 200 μm or less.

[0029] (4) Formation of the surface protection layer 50 The surface protection layer 50 is formed by coating an ultraviolet curable resin on the surface of the upper resin layer 40 to a basis weight of 4 g / m 2 or more and 10 g / m 2 or less, preferably 6 g / m 2 or less. (5) Embossing of the embossed pattern 51 The embossed pattern 51 is embossed on the surface of the surface protection layer 50 to form the embossed pattern. Curing of the surface protective layer 50 The surface protective layer 50 is irradiated with ultraviolet rays to cure the ultraviolet-curable resin of the surface protective layer 50. Formation of the primer layer 60 The primer layer 60 is formed by applying a two-component urethane resin-based primer to the back surface of the printing base material layer 20 with a basis weight after drying of 1.2 g / m 2 and drying.

[0030] (Effect of Embodiment 1) According to Embodiment 1, it is possible to provide a floor decorative sheet 10 that can satisfy the conditions of CLASS 33 of EN 16511:2014(E) even after 2000 rotations in an abrasion resistance test conforming to European standard EN 13329, Annex E.

[0031] (Floor decorative material 100 according to Embodiment 2) The floor decorative material 100 according to Embodiment 2 will be described with reference to FIG. 2. Embodiment 2 is characterized in that the floor decorative sheet 10 according to Embodiment 1 is used, and the back surface of the primer layer 60 is attached to the surface of the floor base material 110 to form the floor decorative material 100. The floor base material 110 is a base material such as MDF or cork, for example. (Manufacturing method of floor decorative material 100) The floor decorative material 100 is manufactured by manufacturing the floor decorative sheet 10 according to Embodiment 1 and attaching the back surface of the primer layer 60 to the surface of the floor base material 110.

[0032] (Effect of Embodiment 2) According to Embodiment 2, it is possible to provide a floor decorative material 100 that exhibits an excellent effect in terms of wear of the pattern of the floor decorative sheet 10.

Examples

[0033] Examples 1 to 5 and Comparative Examples 1 to 3 of the decorative sheet according to the present invention will be described below. Note that the present invention is not limited to Examples 1 to 5 below.

[0034] (Example 1) Example 1 was prepared as follows. A printing base layer 20 with a thickness of 40 μm was formed using a polyethylene resin. Second, a wood grain pattern was printed on the surface of the printing base layer 20 using a two-component urethane resin / vinyl chloride-vinyl acetate copolymer resin binder ink, with a basis weight after drying of 3 g / m 2 to form a pattern layer 30.

[0035] Third, a transparent polypropylene resin was extruded and laminated on the surface of the pattern layer 30 to a thickness of 150 μm to form an upper resin layer 40. At this time, a two-component urethane resin-based primer was applied to the surface of the pattern layer 30 at a basis weight after drying of 1.2 g / m 2 and then a transparent polypropylene resin was extruded and laminated thereon to a thickness of 150 μm to form the upper resin layer 40.

[0036] Fourth, an ultraviolet (UV) curable resin was applied to the surface of the upper resin layer 40 at a basis weight of 6 g / m 2 to form a surface protection layer 50. At this time, a two-component urethane resin-based primer was applied to the back surface of the pattern layer 30 at a basis weight after drying of 4 g / m 2 and then an ultraviolet (UV) curable resin was applied thereon at a basis weight of 6 g / m 2 to form the surface protection layer 50. Fifth, an embossing process was performed on the surface of the surface protection layer 50 to impart an embossed pattern 51, and ultraviolet rays were irradiated to cure the ultraviolet (UV) curable resin of the surface protection layer 50.

[0037] Finally, a two-component urethane resin-based primer was applied to the back surface of the printing base layer 20 at a basis weight after drying of 1.2 g / m 2 to form a primer layer 60. In this way, a floor decorative sheet 10 is produced in which a primer layer 60, a printing stock layer 20 made of a polyethylene resin with a thickness of 40 μm, a pattern layer 30 printed on the printing stock layer 20, a top resin layer 40 made of a transparent polypropylene resin with a thickness of 150 μm, and a surface protection layer 50 with an embossed pattern 51 are sequentially laminated.

[0038] (Example 2) In Example 2, the thickness of the printing stock layer 20 was 100 μm, and the rest was the same as in Example 1. (Example 3) In Example 3, the thickness of the top resin layer 40 was 200 μm, and the rest was the same as in Example 1.

[0039] (Example 4) In Example 4, as shown in Figure 3, a bottom resin layer 200 was formed between the printing stock layer 20 and the primer layer 60, and the rest was the same as in Example 1. That is, the bottom resin layer 200 is a backing layer for the purpose of shock absorption (buffering), etc., and is also an adhesive layer for adhering the printing stock layer 20 to the adherend. The resin component of the bottom resin layer 200 is not particularly limited, but for example, a transparent polypropylene resin is preferable. Considering the impact resistance, the thickness of the bottom resin layer 200 is preferably about 125 μm or more and 150 μm or less.

[0040] Specifically, on the back surface of the printing stock layer 20 (the surface opposite to the pattern layer 30), a transparent polypropylene resin was extruded and laminated on the back surface with a thickness of 125 μm to form the bottom resin layer 200. At this time, a two-component urethane resin-based primer was applied to the back surface of the printing stock layer 20 with a basis weight after drying of 1.2 g / m 2 After coating, a transparent polypropylene resin may be laminated thereon to form the bottom resin layer 200. Finally, on the surface of the bottom resin layer 200 (the surface opposite to the printing stock layer 20), a two-component urethane resin-based primer was applied with a basis weight after drying of 1.2 g / m 2It was applied to form a primer layer 60.

[0041] In this way, a floor decorative sheet 10 was produced in which the primer layer 60, a base resin layer 200 with a thickness of 125 μm formed of a transparent polypropylene resin, a printing stock layer 20 with a thickness of 55 μm formed of a polyethylene resin, a pattern layer 30 printed on the printing stock layer 20, an upper resin layer 40 with a thickness of 150 μm formed of a transparent polypropylene resin, and a surface protection layer 50 with an embossed pattern 51 were sequentially laminated.

[0042] (Example 5) In Example 5, the thickness of the upper resin layer 40 was 210 μm, and the rest was the same as in Example 1.

[0043] (Comparative Example 1) In Comparative Example 1, the thickness of the upper resin layer 40 was 140 μm, and the rest was the same as in Example 1. (Comparative Example 2) In Comparative Example 2, the thickness of the printing stock layer 20 was 30 μm, and the rest was the same as in Example 1. (Comparative Example 3) In Comparative Example 3, the thickness of the printing stock layer 20 was 110 μm, and the rest was the same as in Example 1.

[0044] (Evaluation Method and Criteria) The evaluation method and criteria are as follows. Regarding abrasion resistance, in the abrasion test of CLASS 33 of EN16511:2014(E) in accordance with European standard EN13329, Annex E, after rotating 2000 times under the conditions of a wear wheel (wheel) width of 12.7 mm and a pressure of 5.4 N, external observation was carried out, and those without wear (scuffing) of the pattern were rated as "qualified", and the others as "unqualified". (Evaluation Results) The evaluation results of the decorative sheet are as shown in Table 1 below.

Table 1

[0045] Among Examples 1 to 5, the four types of cosmetic sheets of Examples 1 to 4 passed the comprehensive evaluation because there was no wear (chipping) of the pattern. For the remaining cosmetic sheet of Example 5, wear (chipping) of the pattern occurred in 10% of the area of the polished part of the pattern (contact part of the wear wheel), so the comprehensive evaluation was judged as failing. For all three types of cosmetic sheets of Comparative Examples 1 to 3, wear (chipping) of the pattern occurred in 10% of the area of the polished part of the pattern (contact part of the wear wheel), so the comprehensive evaluation was judged as failing.

[0046] (Necessity of the lower resin layer 200) Comparing Example 1 and Example 4, it can be presumed that the presence or absence of the lower resin layer 200 is not related to the wear of the pattern. That is, both Example 1 and Example 4 have a lower limit value of the thickness of the upper resin layer 40 of 150 μm. Example 1 has no lower resin layer 200, and Example 4 has a lower resin layer 200, but there was no difference in the evaluation results. As the background for making the layer structure into five layers this time, initially, due to the use as a heavy walking floor material, a backing layer (the lower resin layer 200 of Example 4) was provided as a buffer material. In reality, it was found that the buffer function is often provided on the side of the floor base material 110 to which the floor cosmetic sheet 10 is attached, and there is not much merit in giving the floor cosmetic sheet 10 itself a buffer function. Therefore, by omitting the backing layer (lower resin layer 200), it is possible to provide a floor cosmetic sheet 10 that is cheaper and easier to handle due to improved flexibility by making it thinner.

[0047] (Regarding the thickness of the upper resin layer 40) Comparing Example 1 and Comparative Example 1, it can be presumed that the lower limit value of the thickness of the upper resin layer 40 is 150 μm. That is, in Comparative Example 1, the thickness of the upper resin layer 40 is 140 μm, which can be inferred to be too thin. Also, comparing Example 1 and Example 5, it can be presumed that the lower limit value of the thickness of the upper resin layer 40 is 200 μm. That is, in Example 5, the thickness of the upper resin layer 40 was 210 μm, which can be inferred to be due to excessive thickness.

[0048] (Regarding the thickness of the printing master layer 20) Comparing Example 3 and Comparative Example 2, it can be speculated that the lower limit value of the thickness of the printing master layer 20 is 40 μm. That is, in Example 3, when evaluating 40 μm, which is thinner than the general 55 μm as the thickness of the printing master layer 20, evaluation results similar to those of 55 μm were obtained. Furthermore, in Comparative Example 2, when it was experimentally set to 30 μm, it can be inferred that it was due to being too thin. Also, comparing Example 2 and Comparative Example 3, it can be speculated that the upper limit value of the thickness of the printing master layer 20 is 100 μm. That is, in Comparative Example 3, the thickness of the printing master layer 20 was 110 μm, which can be inferred to be due to excessive thickness.

Explanation of symbols

[0049] 10 Floor decorative sheet 20 Printing master layer 30 Pattern layer 40 Upper resin layer 50 Surface protection layer 51 Embossed pattern 60 Primer layer 100 Floor decorative material 110 Floor base material 200 Lower resin layer

Claims

1. A primer layer, A printing stock layer formed of an olefin resin, A pattern layer printed on the surface of the printing stock layer, An upper resin layer formed of a transparent polypropylene resin on the surface of the pattern layer, A surface protection layer with an embossed pattern, Are sequentially laminated, The thickness of the printing stock layer is 40 μm or more and 100 μm or less, The thickness of the upper resin layer is 150 μm or more and 200 μm or less, and the primer layer and the printing stock layer are in contact with each other, The floor decorative sheet, characterized in that the thickness of the surface protection layer is 0.1 μm or more and 15 μm or less (excluding 15 μm).

2. The floor decorative sheet according to claim 1, characterized in that the surface protection layer is formed of an ultraviolet curable resin.

3. The floor decorative sheet according to claim 1 or claim 2, characterized in that in the abrasion resistance test in accordance with European standard EN 13329, Annex E, it satisfies the conditions of CLASS 33 of EN 16511:2014 (E) even after 2000 rotations.

4. Form a printing stock layer using an olefin resin, Form a pattern layer on the surface of the printing stock layer, Form an upper resin layer with a thickness of 150 μm or more and 200 μm or less on the surface of the pattern layer, and form a surface protection layer with a thickness of 0.1 μm or more and 15 μm or less (excluding 15 μm) on the surface of the upper resin layer, Emboss a pattern on the surface of the surface protection layer, Form a primer layer in contact with the back surface of the printing stock layer, The thickness of the printing stock layer is 40 μm or more and 100 μm or less, The surface protection layer is formed of an ultraviolet curable resin, A method for manufacturing a floor decorative sheet, characterized in that the ultraviolet curable resin is applied to the surface of the upper resin layer, after embossing the pattern, the ultraviolet curable resin is cured to form the surface protection layer.

5. A floor decorative material obtained by attaching a floor decorative sheet to the surface of a floor base material, The floor decorative sheet is, A primer layer, A printing stock layer formed of an olefin resin, A pattern layer printed on the surface of the printing stock layer, An upper resin layer formed of a transparent polypropylene resin on the surface of the pattern layer, A surface protection layer with an embossed pattern, Are sequentially laminated, The thickness of the upper resin layer is 150 μm or more and 200 μm or less, and the primer layer and the printing stock layer are in contact with each other. The thickness of the printing stock layer is 40 μm or more and 100 μm or less. The thickness of the surface protection layer is 0.1 μm or more and 15 μm or less (excluding 15 μm). The floor decorative material is characterized in that the surface protection layer is formed of an ultraviolet curable resin.

6. A method for manufacturing a floor decorative material for attaching a floor decorative sheet to the surface of a floor base material, forming a printing stock layer with an olefin resin, forming a pattern layer on the surface of the printing stock layer, forming an upper resin layer with a thickness of 150 μm or more and 200 μm or less on the surface of the pattern layer, forming a surface protection layer on the surface of the upper resin layer, imparting a surface embossed pattern to the surface protection layer, forming a primer layer in contact with the back surface of the printing stock layer to form a floor decorative sheet, The thickness of the printing stock layer is 40 μm or more and 100 μm or less. The thickness of the surface protection layer is 0.1 μm or more and 15 μm or less (excluding 15 μm). The surface protection layer is formed of an ultraviolet curable resin. Applying the ultraviolet curable resin to the surface of the upper resin layer, imparting the embossed pattern, and then curing the ultraviolet curable resin to form the surface protection layer. Attaching the floor decorative sheet to the surface of the floor base material through the primer layer. A method for manufacturing a floor decorative material, characterized by the above.

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