JP5691150B2 - Flooring decorative sheet and flooring decorative material - Google Patents

Description

  The present invention relates to a decorative sheet for flooring and a decorative material for flooring.

  As a decorative sheet for flooring, for example, a decorative layer is provided on a base material sheet to provide a decorative sheet, and a synthetic resin backer layer is further provided on the back surface of the base material sheet, and as a whole, caster resistance, impact resistance, etc. A decorative sheet for flooring that exhibits characteristics is known (Patent Document 1, etc.). Note that the backer layer is a synthetic resin layer having a relatively large thickness, which is effective for the expression of the above-mentioned characteristics while mitigating the influence of surface irregularities such as a wooden substrate. As the backer layer, for example, a polyethylene terephthalate (PET) resin layer, a polypropylene (PP) resin layer, or the like is used.

  However, in the production of a decorative sheet for flooring having a backer layer, a process of bonding the backer part to other parts (for example, a printing sheet) is required, and in this process, product loss tends to occur. Therefore, development of a decorative sheet for flooring that exhibits predetermined hardness, strength and the like without forming a backer layer is desired.

  Patent Document 2 is known as a decorative sheet for flooring that satisfies the above requirements. Patent Document 2 states that “a pattern surface layer, a transparent adhesive layer, a transparent polypropylene resin layer, and a transparent surface protection layer made of ionizing radiation curable resin are sequentially formed on a base material sheet made of polyolefin resin. It is a decorative sheet for flooring, and the thickness of the transparent polypropylene resin layer is 150 to 500 μm. ”. In Patent Document 2, the transparent resin layer is a polypropylene resin layer, and the thickness is set to 150 to 500 μm, so that a predetermined surface characteristic is exhibited without forming a backer layer.

  However, the decorative sheet for flooring of Patent Document 2 has the following problems. That is a problem of improving the adhesion between the transparent polypropylene resin layer and the base sheet. This is because, depending on the usage environment (temperature, humidity, etc.) of the decorative sheet for flooring, there is a possibility that peeling or a decrease in adhesive strength may occur at the bonded portion.

Japanese Patent Laying-Open No. 2005-290736 JP 2005-290568 A

  The present invention is a decorative sheet for flooring in which a transparent resin layer made of a polypropylene resin layer is laminated on a base material sheet, the decorative sheet for flooring having improved adhesion between the base material sheet and the transparent resin layer. The main purpose is to provide.

  As a result of intensive studies, the inventor has constituted a transparent resin layer from a plurality of polypropylene resin layers, and further employs a polypropylene resin layer having specific physical properties as a polypropylene resin layer bonded to a base sheet. In some cases, the inventors have found that the above object can be achieved, and have completed the present invention.

That is, the present invention relates to the following decorative sheet for flooring and flooring decorative material.
1 . A flooring decorative sheet in which at least a transparent resin layer having a thickness of 150 μm or more is laminated on a base material sheet via an adhesive layer,
(1) The transparent resin layer is composed of two or more polypropylene resin layers,
(2) Among the two or more polypropylene resin layers, the polypropylene resin layer bonded to the base sheet has a bending stiffness of 200 to 500 MPa measured according to JIS K7106.
A decorative sheet for flooring.
2 . The decorative sheet for flooring according to Item 1 , wherein the thickness of the polypropylene resin layer bonded to the base sheet is 3 to 50% of the thickness of the transparent resin layer.
3 . Item 3. The decorative sheet for flooring according to Item 1 or 2 , wherein the decorative sheet has a pattern layer, a transparent adhesive layer, the transparent resin layer, and a transparent surface protective layer in this order on the base sheet. .
4 . Item 4. The decorative sheet for flooring according to Item 3 , wherein a colored concealing layer is further formed between the substrate sheet and the pattern layer.
5 . Item 5. The decorative sheet for flooring according to Item 3 or 4 , wherein embossing is applied from the front surface of the transparent surface protective layer.
6 . 6. A flooring decorative material obtained by sticking the back surface of the decorative sheet for flooring according to any one of Items 1 to 5 and an adherend.

  Hereinafter, the decorative sheet for flooring and the decorative material for flooring of the present invention will be described in detail.

The decorative sheet for flooring The decorative sheet for flooring of the present invention is a decorative sheet for flooring in which at least a transparent resin layer having a thickness of 150 μm or more is laminated on a base sheet via an adhesive layer,
(1) The transparent resin layer is composed of two or more polypropylene resin layers,
(2) Among the two or more polypropylene resin layers, the polypropylene resin layer bonded to the base sheet has a bending stiffness of 200 to 500 MPa.
It is characterized by that.

  In the decorative sheet for flooring of the present invention having the above characteristics, among the polypropylene (PP) resin layers, the PP resin layer bonded to the base sheet has specific physical properties (bending stiffness is 200 to 500 MPa). The adhesion (adhesion) between the PP resin layer and the base sheet is improved. The “adhesion to the base sheet” includes a case where the base sheet and the PP resin layer are bonded via a pattern layer and / or a colored concealing layer described later.

  As a decorative sheet for flooring, it has a pattern layer, a transparent adhesive layer, the transparent resin layer and a transparent surface protective layer on a base sheet, and the transparent surface protective layer is provided as the outermost surface layer. A configuration is mentioned as a preferred embodiment. Moreover, an uneven | corrugated pattern may be provided to the outermost surface layer of a decorative sheet by embossing.

  The formation method of each layer is not limited, for example, printing such as gravure printing, flexographic printing, silk screen printing, offset printing, transfer printing; application of spray, roller, brush, etc .; Any of these can be employed. What is necessary is just to select combining suitably from these methods according to the characteristic, raw material, etc. of each layer.

  The thickness of each layer is not particularly limited unless otherwise specified, and can be determined as appropriate according to the use and characteristics of the final product. Usually, it can be in the range of about 0.1 to 500 μm.

  Hereinafter, each layer will be described using the above embodiment as a representative example.

≪Base material sheet≫
The substrate sheet has a pattern layer or the like laminated on its surface (front surface).

  As a base material sheet, what was formed, for example with the thermoplastic resin is suitable. Specifically, polyvinyl chloride, polyethylene terephthalate, polybutylene terephthalate, polyamide, polyethylene, polypropylene, polycarbonate, polyethylene naphthalate, ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, ethylene-acrylic acid ester copolymer Examples include polymers, ionomers, acrylic esters, and methacrylic esters.

  The base material sheet may be colored. In this case, a coloring material (pigment or dye) can be added to the above thermoplastic resin for coloring. As the colorant, for example, inorganic pigments such as titanium dioxide, carbon black and iron oxide, organic pigments such as phthalocyanine blue, and various dyes can be used. These can be selected from one or more known or commercially available ones. Further, the addition amount of the colorant may be appropriately set according to the desired color tone.

  The base sheet contains various additives such as fillers, matting agents, foaming agents, flame retardants, lubricants, antistatic agents, antioxidants, UV absorbers, and light stabilizers as necessary. It may be.

  Although the thickness of a base material sheet can be suitably set with the use of a final product, a usage method, etc., generally 50-250 micrometers is preferable.

  If necessary, the base sheet may be subjected to corona discharge treatment on the surface (front surface) in order to enhance the adhesion of the ink forming the pattern layer. What is necessary is just to implement the method and conditions of a corona discharge process according to a well-known method. Moreover, you may give a corona discharge process to the back surface of a base material sheet, and may form a back surface primer layer as needed.

≪Pattern pattern layer (pattern layer) ≫
The pattern layer provides a desired pattern (design) to the decorative sheet, and the type of the pattern is not limited. Examples thereof include a wood grain pattern, a stone pattern, a grain pattern, a tiled pattern, a brickwork pattern, a cloth pattern, a leather pattern, a geometric figure, a character, a symbol, and an abstract pattern.

  The method for forming the pattern layer is not particularly limited. For example, printing using ink obtained by dissolving (or dispersing) a known colorant (dye or pigment) in a solvent (or dispersion medium) together with a binder resin. What is necessary is just to form in the base-material sheet | seat surface by a method.

  Examples of the colorant include inorganic pigments such as carbon black, titanium white, zinc white, dial, bitumen, and cadmium red; azo pigments, lake pigments, anthraquinone pigments, quinacridone pigments, phthalocyanine pigments, isoindolinone pigments, dioxazine pigments. Organic pigments such as aluminum powder, metal powder pigments such as bronze powder, pearlescent pigments such as titanium oxide-coated mica and bismuth oxide chloride; fluorescent pigments; These colorants can be used alone or in admixture of two or more. These colorants may further contain fillers such as silica, extender pigments such as organic beads, neutralizing agents, surfactants and the like.

  As binder resin, polyester urethane resin, polyester urethane resin with hydrophilic treatment, polyester, polyacrylate, polyvinyl acetate, polybutadiene, polyvinyl chloride, chlorinated polypropylene, polyethylene, polystyrene, polystyrene-acrylate A polymer, a rosin derivative, an alcohol adduct of a styrene-maleic anhydride copolymer, a cellulose resin, or the like can be used in combination.

  More specifically, for example, polyurethane-polyacrylic resin, polyacrylamide resin, poly (meth) acrylic acid resin, polyethylene oxide resin, poly N-vinylpyrrolidone resin, water-soluble polyester resin, water-soluble Polyamide resins, water-soluble amino resins, water-soluble phenol resins, other water-soluble synthetic resins; water-soluble natural polymers such as polynucleotides, polypeptides, polysaccharides, etc. can be used. Further, for example, natural rubber, synthetic rubber, polyvinyl acetate resin, (meth) acrylic resin, polyvinyl chloride resin, polyurethane-polyacrylic resin modified or mixed resin, and other resins can also be used. The binder resin can be used alone or in combination of two or more.

  Examples of the printing method used for forming the pattern layer include a gravure printing method, an offset printing method, a screen printing method, a flexographic printing method, an electrostatic printing method, and an inkjet printing method. When a solid pattern pattern layer (also referred to as a colored concealing layer) is formed, for example, a roll coating method, a knife coating method, an air knife coating method, a die coating method, a lip coating method, or a comma coating method. Various coating methods such as a kiss coating method, a flow coating method, and a dip coating method can also be mentioned.

  In addition to the above, for example, the hand-drawn method, the ink-sink method, the photographic method, the transfer method, the laser beam drawing method, the electron beam drawing method, the metal partial evaporation method, the etching method, etc. are used or combined with other forming methods. It may be used.

  The thickness of the pattern layer is not particularly limited and can be appropriately set according to product characteristics. The layer thickness at the time of coating is about 1 to 15 μm, and the layer thickness after drying is about 0.1 to 10 μm.

≪Adhesive layer≫
The adhesive layer exists between the pattern layer and the transparent resin layer. The adhesive used in the adhesive layer can be appropriately selected depending on the components constituting the pattern layer or the transparent resin layer. For example, various adhesives including polyurethane resin, polyacrylic resin, polycarbonate resin, epoxy resin and the like can be used. In addition to the reactive curing type, an adhesive such as a hot melt type, an ionizing radiation curing type, and an ultraviolet curing type may be used.

  The adhesive layer may be transparent or translucent as long as the pattern layer can be recognized.

  In the present invention, a known easy adhesion treatment such as a corona discharge treatment, a plasma treatment, a degreasing treatment, a surface roughening treatment or the like can be applied to the adhesion surface as necessary.

  The thickness of the adhesive layer varies depending on the transparent protective layer, the type of adhesive used, and the like, but generally may be about 0.1 to 30 μm.

≪Transparent resin layer≫
The decorative sheet for flooring of the present invention has a transparent resin layer having a thickness of 150 μm or more composed of two or more PP resin layers. Although the thickness of the transparent resin layer should just be 150 micrometers or more, 150-500 micrometers is preferable and 300-500 micrometers is more preferable. Such material and thickness provide excellent surface properties such as wear resistance.

  The transparent resin layer is composed of two or more PP resin layers, and the PP resin layer bonded to the base sheet has a bending stiffness of 200 to 500 MPa (preferably 300 to 500 MPa). The bending stiffness is an apparent elastic modulus obtained from a bending moment and a bending angle applied to a cantilever test piece. In particular, in this specification, JIS K7106 (measurement sample size: thickness 2 mm × width 15 mm × length 90 mm). ) Is a value measured according to. In addition, since the PP resin layer bonded to the base sheet is a layer that improves adhesiveness, it is also referred to as an “easily adhesive resin layer” in the present specification.

  The PP resin layer constituting the easily adhesive resin layer is a propylene homopolymer; propylene, α-olefin such as ethylene, butene-1, pentene-1, hexane-1, 4-methyl-pentene-1, and acrylic acid. Random copolymers, block copolymers, or graft copolymers with unsaturated carboxylic acids such as ethyl acrylate and derivatives thereof, vinyl esters such as vinyl acetate, unsaturated aromatic compounds such as styrene and methylstyrene, etc. Coalescence is mentioned. Among these, a homopolymer of propylene, a propylene-ethylene random copolymer, and a propylene-ethylene block copolymer are preferable. Specifically, a PP resin layer having a bending stiffness of 200 to 500 MPa is obtained by combining one or more of these resins.

  The transparent resin layer may be two or more layers of an easily adhesive resin layer and another PP resin layer, and usually has two layers. 3-50% of the thickness of a transparent resin layer is preferable, and, as for the thickness of an easily bonding resin layer, 5-25% is more preferable.

  Although it does not limit as another PP resin layer, The thing containing a homo polypropylene is preferable. Although the content rate of the homopolypropylene in another PP resin layer is not specifically limited, 75 weight% or more of a resin component is preferable, and it is more preferable that it is substantially formed only from a homopolypropylene. Other PP resin layers include, for example, fillers, matting agents, foaming agents, flame retardants, lubricants, antistatic agents, antioxidants, ultraviolet absorbers, light stabilizers, radical scavengers, soft components. Various additives such as rubber (for example, rubber) may be included.

  The transparent resin layer can be formed, for example, by melt extrusion co-extrusion film formation. In the case of coextrusion film formation, a PP resin layer composed of two or more layers can be easily formed. For extrusion film formation, for example, a multi-manifold type or a feed block type T-die may be used.

≪Transparent surface protective layer≫
A transparent surface protective layer is formed on the transparent resin layer. The transparent surface protective layer is not limited, but preferably contains an ionizing radiation curable resin or a two-component curable urethane resin as a resin component. Substantially those formed from these resins are preferred. When forming a transparent surface protective layer with ionizing radiation curable resin or two-component curable urethane resin, it is easy to improve the abrasion resistance, impact resistance, contamination resistance, scratch resistance, weather resistance, etc. of the decorative sheet. .

  The ionizing radiation curable resin is not particularly limited, and prepolymers (including oligomers) and / or monomers containing radically polymerizable double bonds capable of undergoing a crosslinking reaction upon irradiation with ionizing radiation such as ultraviolet rays and electron beams. A transparent resin containing as a main component can be used. These prepolymers or monomers can be used alone or in combination. The curing reaction is usually a cross-linking curing reaction.

  Specifically, as the prepolymer or monomer, a compound having in the molecule a radically polymerizable unsaturated group such as a (meth) acryloyl group or (meth) acryloyloxy group, or a cationically polymerizable functional group such as an epoxy group. Is mentioned. Further, a polyene / thiol prepolymer based on a combination of polyene and polythiol is also preferable. Here, the (meth) acryloyl group means an acryloyl group or a methacryloyl group.

  Examples of the prepolymer having a radically polymerizable unsaturated group include polyester (meth) acrylate, urethane (meth) acrylate, epoxy (meth) acrylate, melamine (meth) acrylate, triazine (meth) acrylate, and silicone (meth) acrylate. Etc. These molecular weights are usually preferably about 250 to 100,000.

  As a monomer which has a radically polymerizable unsaturated group, methyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, phenoxyethyl (meth) acrylate etc. are mentioned as a monofunctional monomer, for example. Examples of the polyfunctional monomer include diethylene glycol di (meth) acrylate, propylene glycol di (meth) acrylate, trimethylolpropane tri (meth) acrylate, trimethylolpropane ethylene oxide tri (meth) acrylate, dipentaerythritol tetra ( And (meth) acrylate, dipentaerythritol penta (meth) acrylate, and dipentaerythritol hexa (meth) acrylate.

  Examples of the prepolymer having a cationic polymerizable functional group include prepolymers of epoxy resins such as bisphenol type epoxy resins and novolac type epoxy compounds, and vinyl ether type resins such as fatty acid type vinyl ethers and aromatic vinyl ethers. Examples of the thiol include polythiols such as trimethylolpropane trithioglycolate and pentaerythritol tetrathioglycolate. Examples of the polyene include those in which allyl alcohol is added to both ends of polyurethane by diol and diisocyanate.

  As the ionizing radiation used for curing the ionizing radiation curable resin, electromagnetic waves or charged particles having energy capable of causing a curing reaction of molecules in the ionizing radiation curable resin (composition) are used. Usually, ultraviolet rays or electron beams may be used, but visible light, X-rays, ion rays, or the like may be used.

  As the ultraviolet light source, for example, a light source such as an ultra-high pressure mercury lamp, a high pressure mercury lamp, a low pressure mercury lamp, a carbon arc lamp, a black light, a metal halide lamp can be used. As a wavelength of ultraviolet rays, 190 to 380 nm is usually preferable.

  As the electron beam source, for example, various electron beam accelerators such as a cockcroft Walton type, a bandegraft type, a resonant transformer type, an insulated core transformer type, a linear type, a dynamitron type, and a high frequency type can be used. Among them, those capable of irradiating electrons having energy of 100 to 1000 keV, preferably 100 to 300 keV are preferable.

  The two-component curable urethane resin is not particularly limited. Among them, a polyol component (acrylic polyol, polyester polyol, polyether polyol, epoxy polyol, etc.) having an OH group as a main component and an isocyanate component (tolylene diene) which is a curing agent component. Isocyanate, hexamethylene diisocyanate, metaxylene diisocyanate and the like) can be used.

  The transparent surface protective layer may contain a plasticizer, a stabilizer, a filler, a dispersant, a colorant such as a dye or a pigment, a solvent, or the like, if necessary.

  For example, the transparent surface protective layer is formed by applying an ionizing radiation curable resin or a two-component curable urethane resin on a transparent polypropylene resin layer by a known coating method such as gravure coating or roll coating, and then applying the resin. It can be formed by curing. In the case of an ionizing radiation curable resin, the resin is cured by electron beam irradiation.

  The thickness of the transparent surface protective layer is not particularly limited and can be appropriately set according to the properties of the final product, but is usually about 0.1 to 50 μm, preferably about 1 to 20 μm.

≪Embossing≫
The decorative sheet for flooring may be embossed from the transparent surface protective layer side.

  The embossing is performed to give a desired texture such as a wood grain pattern to the decorative sheet. For example, after heating and softening the transparent protective layer on a heating drum, it is further heated to 140 to 170 ° C. with an infrared radiation heater, pressed and shaped with an embossed plate having an uneven pattern of a desired shape, and cooled and fixed. To give a texture. Embossing can be performed with a known single wafer or rotary embossing machine.

  Examples of the embossed concavo-convex pattern include a wood grain conduit groove, a float pattern (a concavo-convex pattern of a raised annual ring), a hairline, a grain, and a satin texture.

  When embossing is performed, the embossed recess may be filled with ink by wiping as necessary. For example, the embossed recess is filled with ink while scratching the surface with a doctor blade. As the ink to be filled (wiping ink), usually, an ink having a two-component curable urethane resin as a binder can be used. In particular, by performing a wiping process on the grain conduit groove irregularities, the product value can be increased by expressing a design closer to the actual grain.

  In the present invention, the transparent surface protective layer may contain other components. For example, additives such as a solvent, an ultraviolet absorber, an antioxidant, a dispersant, a light stabilizer, a gloss adjusting agent, an antiblocking agent, and a lubricant can be blended.

Flooring decorative material The flooring decorative sheet of the present invention can be made into a flooring decorative material by bonding with various adherends. The material of the adherend is not particularly limited, and examples thereof include inorganic non-metallic materials, metallic materials, wood materials, and plastic materials.

  Specifically, in inorganic non-metallic systems, for example, papermaking cement, extruded cement, slag cement, ALC (lightweight cellular concrete), GRC (glass fiber reinforced concrete), pulp cement, wood chip cement, asbestos cement, calcium oxalate, Non-ceramic ceramic materials such as gypsum and gypsum slag, ceramic materials such as earthenware, ceramics, porcelain, setware, glass, and glazing.

  In a metal system, metal materials (metal steel plate), such as iron, aluminum, and copper, are mentioned, for example.

  In the wood system, for example, a single board, plywood, particle board, fiber board, laminated timber and the like made of cedar, straw, firewood, lauan, teak and the like can be mentioned.

  In the plastic system, for example, resin materials such as polypropylene, ABS resin, and phenol resin can be used.

  The shape of such an adherend is not particularly limited, and may be a flat plate in consideration of installation on a flooring or the like.

  After joining with the adherend, for example, according to the characteristics of the final product, cutting, use of a tenor, sag processing, provision of V-shaped grooves, chamfering on four sides, etc. may be performed.

  Since the decorative sheet for flooring of the present invention has a specific physical property (bending stiffness of 200 to 500 MPa) among the polypropylene (PP) resin layer, the PP resin layer bonded to the base sheet has a PP resin layer. The adhesion (adhesion) between the substrate and the base sheet is improved.

3 is a schematic diagram of a decorative sheet for flooring used in Test Example 1. FIG.

  The present invention will be specifically described below with reference to experimental examples and comparative examples. However, the present invention is not limited to the examples.

Examples 1-3 and Comparative Examples 1-5
(Preparation of decorative sheet for flooring)
A pattern layer (2 μm) was formed by printing on 0.06 mm thick colored polypropylene (base sheet). Next, two transparent polypropylene resin films (total 200 μm) were adhered on the pattern layer using a urethane dry laminate adhesive.

  The two-layer transparent polypropylene resin film has a two-layer structure of an easy-adhesion resin layer (25 μm) and a homo PP resin layer (175 μm) made of a propylene-ethylene random copolymer. The bending stiffness (JIS K7106) of the easily adhesive resin layer was as shown in Table 1 below.

  Next, an electron beam curable transparent surface protective layer (15 μm) was formed on the transparent resin layer.

  Next, embossing was performed from the transparent surface protective layer side to produce a decorative sheet for flooring. The embossing was a wood grain conduit pattern with a depth of about 30 μm.

(Preparation of decorative materials for floors)
A 12 mm lauan plywood was stuck to the back surface of the produced decorative sheet for flooring to prepare a flooring decorative material. A urethane-modified ethylene-vinyl acetate emulsion adhesive (100 g / m ² wet) was used for the attachment.

Comparative Examples 6-13
Except for the two-layer transparent polypropylene-based resin film having a two-layer configuration of an easy-adhesion resin layer (10 μm) and a homo PP resin layer (70 μm) made of a propylene-ethylene random copolymer (total 80 μm) A decorative sheet for flooring and a decorative material for flooring were produced in the same manner as in Example 1.

Test example 1
The interlayer strength, wet heat strength, pencil hardness, and abrasion resistance of the above-mentioned floor decorative material were measured. The results are shown in Table 1.
(1) The interlaminar strength is the interlaminar strength between the base sheet and the transparent polypropylene resin film, and was measured by peeling in a 180 ° direction (T-shape) with a width of 25 mm.
Measurement results (criteria)
◎: 40N or more ○: 30-40N △: 15-30N ×: 15N or less

(2) For the wet heat strength, the interlayer strength was measured after being left in a constant temperature and humidity chamber at 80 ° C. and 90% RH for 72 hours.
Measurement results (criteria)
◎: 40N or more ○: 30-40N △: 15-30N ×: 15N or less

(3) For the pencil hardness, the tester was set so that a load of 1000 g was applied to the tip of the pencil when the tester was in a horizontal position, and scratched with a 3B pencil.
Measurement results (criteria)
○: No change Δ: Slightly dent ×: Scratch occurred (“△” of pencil hardness is within a practically acceptable range as a product)

(4) The abrasion resistance was evaluated by visual observation of the appearance after 2000 rotations under test conditions based on the JAS flooring wear A test.
Measurement results (criteria)
○: No change in design pattern ×: Change in design pattern (with pattern taken)

1. 1. Base sheet 2. 2. Pattern pattern layer 3. Transparent adhesive layer 4. PP easy adhesive resin layer Homo PP resin layer6. 6. Transparent resin layer Embossed pattern 8. Electron beam curable transparent surface protective layer

Claims (6)

A flooring decorative sheet in which at least a transparent resin layer having a thickness of 150 μm or more is laminated on a base material sheet via an adhesive layer,
(1) The transparent resin layer is composed of two or more polypropylene resin layers,
(2) Among the two or more polypropylene resin layers, the polypropylene resin layer bonded to the base sheet has a bending stiffness of 200 to 500 MPa measured according to JIS K7106.
A decorative sheet for flooring. The decorative sheet for flooring according to claim 1, wherein the thickness of the polypropylene resin layer bonded to the base sheet is 3 to 50% of the thickness of the transparent resin layer. The decorative sheet for flooring according to claim 1 or 2 , wherein the decorative sheet has a pattern layer, a transparent adhesive layer, the transparent resin layer, and a transparent surface protective layer in this order on the base sheet. . The decorative sheet for flooring according to claim 3 , wherein a colored concealing layer is further formed between the base sheet and the pattern layer. The decorative sheet for flooring according to claim 3 or 4 , wherein embossing is applied from the front surface of the transparent surface protective layer. The flooring decorative material formed by sticking the back surface and adherend of the flooring decorative sheet in any one of Claims 1-5 .

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