Cosmetic sheet for vacuum forming, method for manufacturing cosmetic material, cosmetic material

Abstract

Provided is a decorative sheet for vacuum forming that is resistant to peeling between a first vinyl chloride resin layer and a second vinyl chloride resin layer during vacuum forming and that can be given a variety of color designs. [Solution] A decorative sheet for vacuum forming comprises a first vinyl chloride resin layer containing a vinyl chloride resin and a colorant, and a second vinyl chloride resin layer laminated to the first vinyl chloride resin layer, containing a vinyl chloride resin, and being transparent; the colorant contains less than 1 part by mass of titanium oxide particles, and the first vinyl chloride resin layer contains inorganic particles, at least some of which are calcium carbonate particles.

Description

Technical Field

[0001] The present disclosure relates to a decorative sheet for vacuum forming and the like.

Background Art

[0002] Decorative materials are used as building materials such as interior finish materials for housing and furniture. A decorative sheet is a sheet for imparting a design to the surface of a decorative material (for example, Patent Document 1).

[0003] As one method for imparting design properties to a three-dimensional decorative material using a decorative sheet, a vacuum forming method is known. A method for manufacturing a decorative material by the vacuum forming method is, for example, a method in which a decorative sheet softened by heating is vacuum-adsorbed onto a substrate formed into a three-dimensional shape by a pressure-reducing operation, thereby forming and attaching the decorative sheet along the three-dimensional shape of the substrate. As the substrate, for example, a wood board such as a plywood, a wood fiber board, a particle board, a plastic board, or a metal board is used. A decorative sheet for the vacuum forming method is a decorative sheet for decorating a substrate by the vacuum forming method. A decorative material is decorated with a decorative sheet and becomes a material for housing and furniture.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In a decorative sheet, for example, a good design can be expressed by providing a colored layer or laminating a pattern layer on a base layer. As a coloring agent for the colored layer or the base layer of the decorative sheet, it is conceivable to use titanium oxide particles. Titanium oxide particles are the main component of a white pigment called titanium white, and are excellent from the viewpoints of hiding power, non-toxicity, price, etc., and are thus suitable as a material for coloring in white or forming a base for a pattern.

[0006] However, in recent years, due to the diversification of people's preferences, various colored designs have been demanded for decorative materials. When titanium oxide particles are used as the main component of the coloring agent for the colored layer or the base layer, since the whiteness of the titanium oxide particles is high, it is difficult to realize, for example, a dark-colored design. Therefore, in order to realize designs of various colors such as dark colors, it is conceivable to use a coloring agent other than titanium oxide particles without using titanium oxide particles. Further, it is required to reduce the amount of titanium oxide particles used and use a combination of a coloring agent other than titanium oxide particles and titanium oxide particles.

[0007] In order to improve the durability of the decorative material, in the decorative sheet, it is required that the colored layer, the pattern layer, and the base layer be protected from rubbing and piercing. Further, in order to be attached along the three-dimensional shape of the base material during vacuum forming, in the vacuum forming decorative sheet, it is required to be stretched in the plane direction during vacuum forming.

[0008] Therefore, the inventors of the present invention considered using a laminate of a first vinyl chloride resin layer and a second vinyl chloride resin layer in a vacuum forming decorative sheet, the first vinyl chloride resin layer containing a vinyl chloride resin and a coloring agent, the first vinyl chloride resin layer not containing titanium oxide particles or suppressing the content of titanium oxide particles in the first vinyl chloride resin layer to less than 1 part by mass, and the second vinyl chloride resin layer containing a vinyl chloride resin in the same manner as the first vinyl chloride resin layer to satisfy the above requirements.

[0009] However, it has been found that with only the above idea, there is a problem that peeling may occur between the first vinyl chloride resin layer and the second vinyl chloride resin layer during vacuum forming. This problem did not occur when a vinyl chloride resin layer colored only with titanium oxide particles or a vinyl chloride resin layer colored mainly with titanium oxide particles was used as the first vinyl chloride resin layer. This problem is a specific problem when a vinyl chloride resin layer using a colorant other than titanium oxide particles or a combination of a colorant other than titanium oxide particles and titanium oxide particles is used as the first vinyl chloride resin layer. Also, as long as it is used as a normal decorative sheet without using the vacuum forming method, there were no particular problems. This problem is specific to the decorative sheet for vacuum forming.

[0010] An object of the present disclosure is to provide a decorative sheet for vacuum forming that is difficult to peel between the first vinyl chloride resin layer and the second vinyl chloride resin layer during vacuum forming and can impart designs of various colors. Another object is to provide a decorative material having designs of various colors imparted by the vacuum forming method or a manufacturing method thereof.

Means for Solving the Problems

[0011] One of the decorative sheets for vacuum forming of the present disclosure includes a first vinyl chloride resin layer containing a vinyl chloride resin and a colorant, and a second vinyl chloride resin layer laminated on the first vinyl chloride resin layer and containing a vinyl chloride resin. The first vinyl chloride resin layer does not contain titanium oxide particles or the content of titanium oxide particles in the first vinyl chloride resin layer is less than 1 part by mass. The first vinyl chloride resin layer contains inorganic particles, and at least a part of the inorganic particles is calcium carbonate particles.

[0012] One of the manufacturing methods of the decorative material of the present disclosure includes a step of preparing a substrate formed into a three-dimensional shape and the decorative sheet for vacuum forming of the present disclosure, a step of heating the decorative sheet to soften it, and a step of vacuum-sucking the softened decorative sheet onto the three-dimensional shape of the substrate by a decompression operation.

[0013] One of the decorative materials of the present disclosure includes a substrate formed into a three-dimensional shape and the vacuum forming decorative sheet of the present disclosure joined along the three-dimensional shape of the substrate, and the second vinyl chloride resin layer of the vacuum forming decorative sheet, the first vinyl chloride resin layer of the vacuum forming decorative sheet, and the substrate are laminated in this order.

Advantages of the Invention

[0014] In the present disclosure, in one of the vacuum forming decorative sheets, since the first vinyl chloride resin layer contains inorganic particles and at least a part of the inorganic particles are calcium carbonate particles, the bonding strength between the first vinyl chloride resin layer and the second vinyl chloride resin layer is enhanced. Therefore, even during vacuum forming in which the sheet is stretched, it is difficult to peel between the first vinyl chloride resin layer and the second vinyl chloride resin layer, and a vacuum forming decorative sheet capable of imparting various color designs can be provided. Further, it is possible to provide a decorative material to which various color designs are imparted by a vacuum forming method or a manufacturing method thereof.

Brief Description of the Drawings

[0015]

Figure 1

Figure 2

Figure 3

Figure 4

Modes for Carrying Out the Invention

[0016] Hereinafter, embodiments for carrying out the present disclosure will be described with reference to the drawings and the like.

[0017] The first embodiment is a vacuum - forming decorative sheet (10) including a first vinyl chloride - based resin layer (11) containing a vinyl chloride - based resin and a colorant, and a second vinyl chloride - based resin layer (13) laminated on the first vinyl chloride - based resin layer (11) and containing a vinyl chloride - based resin. In the vacuum - forming decorative sheet (10), the first vinyl chloride - based resin layer (11) does not contain titanium oxide particles or the content of titanium oxide particles in the first vinyl chloride - based resin layer (11) is less than 1 part by mass. The first vinyl chloride - based resin layer (11) contains inorganic particles (11a), and at least a part of the inorganic particles (11a) is calcium carbonate particles.

[0018] The second embodiment is the vacuum - forming decorative sheet (10) according to the first embodiment, wherein the surface of the first vinyl chloride - based resin layer (11) on the side of the second vinyl chloride - based resin layer (13) has protrusions (11b) caused by containing the inorganic particles (11a), and at least a part of the protrusions (11b) penetrates into the second vinyl chloride - based resin layer (13).

[0019] The third embodiment is the vacuum - forming decorative sheet (10) according to the first embodiment or the second embodiment, wherein a pattern layer (12) is disposed between the first vinyl chloride - based resin layer (11) and the second vinyl chloride - based resin layer (13).

[0020] The fourth embodiment is the vacuum - forming decorative sheet (10) according to any one of the first to third embodiments, wherein the first vinyl chloride - based resin layer (11) contains 8 parts by mass or more of the inorganic particles (11a) with respect to the resin component.

[0021] The fifth embodiment is the vacuum - forming decorative sheet (10) according to the fourth embodiment, wherein the first vinyl chloride - based resin layer (11) contains 3 parts by mass or more of the calcium carbonate particles with respect to the resin component.

[0022] The sixth embodiment is a vacuum forming decorative sheet (10) according to the fourth or fifth embodiment, wherein the first vinyl chloride resin layer (11) contains 16 parts by mass or less of the inorganic particles (11a) with respect to the resin component, which is a vacuum forming decorative sheet (10).

[0023] The seventh embodiment is a vacuum forming decorative sheet (10) according to the sixth embodiment, wherein the first vinyl chloride resin layer (11) contains 11 parts by mass or less of the calcium carbonate particles with respect to the resin component, which is a vacuum forming decorative sheet (10).

[0024] The eighth embodiment is a method for manufacturing a decorative material, comprising the steps of preparing a substrate formed into a three-dimensional shape and any one of the vacuum forming decorative sheets (10) from the first to the seventh embodiments, heating the decorative sheet to soften it, and vacuum-adsorbing the softened decorative sheet onto the three-dimensional shape of the substrate by a pressure-reducing operation.

[0025] The ninth embodiment is a decorative material comprising a substrate formed into a three-dimensional shape and any one of the vacuum forming decorative sheets (10) from the first to the seventh embodiments attached along the three-dimensional shape of the substrate, wherein the second vinyl chloride resin layer (13) of the vacuum forming decorative sheet (10), the first vinyl chloride resin layer (11) of the vacuum forming decorative sheet, and the substrate are laminated in this order.

[0026] FIG. 1 is a diagram showing an embodiment of a vacuum forming decorative sheet according to the present invention. Note that each of the figures shown below, including FIG. 1, is a schematically shown diagram, and the size and shape of each part are exaggerated or omitted as appropriate for easy understanding. Also, in the following description, specific numerical values, shapes, materials, etc. are shown for explanation, but these can be changed as appropriate.

[0027] The decorative sheet 10 for vacuum forming shown in Fig. 1 has a first vinyl chloride-based resin layer 11. On one surface side of the first vinyl chloride-based resin layer 11, a pattern layer 12 and a second vinyl chloride-based resin layer 13 are laminated, and a primer layer 14 is laminated on the other surface side of the first vinyl chloride-based resin layer 11. Note that the pattern layer 12 and the primer layer 14 are layers that may be provided as necessary as described later. The decorative sheet 10 for vacuum forming is suitable for use in a method for manufacturing a decorative material using the vacuum forming method. As a method for manufacturing a decorative material by the vacuum forming method using the decorative sheet 10 for vacuum forming, a known technique can be used. The first vinyl chloride-based resin layer 11 is disposed on the base material side of the decorative material, and the second vinyl chloride-based resin layer 13 is disposed on the surface side of the decorative material.

[0028] The first vinyl chloride-based resin layer 11 contains a vinyl chloride-based resin, a colorant, and inorganic particles 11a, and at least a part of the inorganic particles 11a is calcium carbonate particles. Since the calcium carbonate particles have a relatively small influence on the color of the first vinyl chloride-based resin layer, they are suitable for adding a desired amount of particles while suppressing the influence on the color of the decorative sheet. Calcium carbonate particles having an average particle size of 0.1 μm to 1 μm can be used. The inorganic particles 11a can be contained in an amount of 2 parts by mass or more with respect to the resin component, and can also be contained in an amount of 18 parts by mass or less. The inorganic particles 11a may be contained in the range of 8 parts by mass to 16 parts by mass with respect to the resin component. All of the inorganic particles 11a can be calcium carbonate particles, or a part of the inorganic particles 11a can be calcium carbonate particles. When inorganic particles are included as a colorant or an additive, the amount of calcium carbonate particles can be reduced, and the calcium carbonate particles can be contained in an amount of 2 parts by mass or more with respect to the resin component, and can also be contained in an amount of 18 parts by mass or less. The calcium carbonate particles may be contained in the range of 3 parts by mass to 11 parts by mass with respect to the resin component.

[0029] The first vinyl chloride-based resin layer 11 does not contain titanium oxide particles or has a titanium oxide particle content of less than 1 part by mass. Thereby, it is possible to suppress the influence of the highly concealing white color of the titanium oxide particles on the color of the decorative sheet. As the colorant, known organic pigments or inorganic pigments can be used. When inorganic pigment particles are used as the colorant, they can also serve as both the colorant and the inorganic particles. The first vinyl chloride-based resin layer can further contain various additives such as a plasticizer, a heat stabilizer, a light stabilizer, and an ultraviolet absorber, as necessary.

[0030] Examples of the vinyl chloride-based resin include the following resins. (1) A homopolymer of a vinyl chloride monomer. Narrowly, it may be called a vinyl chloride resin (polyvinyl chloride). The average degree of polymerization is, for example, about 900 to 2500. (2) Chlorinated polyvinyl chloride. (3) A vinyl chloride copolymer obtained by copolymerizing a vinyl chloride monomer with another monomer copolymerizable with the vinyl chloride monomer at a copolymerization ratio of 50 mol% or less. Here, examples of the other monomer include vinyl acetate, ethylene, vinylidene chloride, vinyl fluoride, acrylonitrile, styrene, methyl acrylate, methyl methacrylate, and the like. (4) A mixture of any two or three of the polyvinyl chloride of (1), the chlorinated polyvinyl chloride of (2), and the vinyl chloride copolymer of (3). (5) A mixture in which any one or two or more of the polyvinyl chloride of (1), the chlorinated polyvinyl chloride of (2), and the vinyl chloride copolymer of (3), or the mixture of (4) is further mixed with another resin in an amount of 50% by mass or less. Here, examples of the other resin include acrylic resins, ethylene-vinyl acetate copolymers, styrene-butadiene copolymers, styrene-butadiene-acrylonitrile copolymers, and the like.

[0031] Vinyl chloride resins may contain various additives as required. Examples of additives include plasticizers, heat stabilizers, light stabilizers (such as radical scavengers), ultraviolet absorbers (UVA), surfactants, colorants, fillers, antistatic agents, and the like. Examples of plasticizers include phthalate plasticizers such as dibutyl phthalate, dioctyl phthalate (DOP), and diisononyl phthalate (DINP); adipate plasticizers such as dioctyl adipate and diisononyl adipate; phosphate plasticizers such as triphenyl phosphate and tricresyl phosphate; trimellitate plasticizers such as tri-2-ethylhexyl trimellitate (TOTM) and tri-n-octyl trimellitate. The plasticizer can be contained in an amount of about 5 to 35 parts by mass based on 100 parts by mass of the vinyl chloride resin.

[0032] The first vinyl chloride resin layer contains a colorant and is colored in a desired color such as gray, brown, red, blue, green, etc. The colorant may be selected from various known pigments, dyes, etc. For example, inorganic pigments such as iron black, lead yellow, titanium yellow, chrome yellow, cadmium red, ultramarine blue, cobalt blue, and organic pigments or organic dyes such as quinacridone red, isoindolinone yellow, phthalocyanine blue, nickel-azo complex, azomethine azo-based black pigment, perylene-based black pigment can be used. Titanium white (titanium oxide particles) can be used, but the content of titanium white should be less than a certain amount (about 1 part by mass when the resin component of the first vinyl chloride resin layer is 100 parts by mass).

[0033] In the following Examples and Comparative Examples, for the first vinyl chloride-based resin layer 11, a colored film made of a vinyl chloride-based resin with a thickness of 150 μm was used. The film contained a vinyl chloride homopolymer with an average degree of polymerization of 1500, a plasticizer, a colorant, and inorganic particles. As the plasticizer, 20 parts by mass of dioctyl phthalate was used per 100 parts by mass of the vinyl chloride homopolymer. The film was colored gray with a colorant. The contents of the inorganic particles and calcium carbonate particles are shown in FIG. 2. Also, the first vinyl chloride-based resin layers of Examples 1 to 4 and Comparative Example 1 did not contain titanium oxide. The first vinyl chloride-based resin layer of Comparative Example 2 contained 1 part by mass or more of titanium oxide and was colored white.

[0034] The first vinyl chloride-based resin layer 11 contains inorganic particles 11a including calcium carbonate particles, and thus a large number of protrusions 11b are formed on the surface. In FIG. 1, the protrusions 11b are illustrated in a form that protrudes only toward the second vinyl chloride-based resin layer 13 side, but the protrusions 11b may be formed to protrude on both sides of the first vinyl chloride-based resin layer 11.

[0035] Before bonding, the protrusions protruding from the surface of the first vinyl chloride-based resin layer 11 can be formed to be 1.1×10 6 pieces / mm 2 or more and 1.3×10 6 pieces / mm 2 or less. The bonding strength between the first vinyl chloride-based resin layer 11 and the second vinyl chloride-based resin layer 13 can be increased. Also, when the protrusions protruding from the surface of the first vinyl chloride-based resin layer 11 are observed after peeling off after bonding, they can be formed to be 4×10 6 pieces / mm 2 or more. A decorative sheet with good interlayer adhesion can be obtained.

[0036] The pattern layer 12 is a layer of a pattern formed on one surface side of the first vinyl chloride-based resin layer 11. The pattern layer 12 may be formed when a pattern is required. For example, when only color is required, it may not be formed. The pattern layer 12 can be formed, for example, by directly printing on the first vinyl chloride-based resin layer 11. Note that the pattern layer 12 may be formed by transfer or the like in addition to printing.

[0037] In the following Examples and Comparative Examples, the pattern of the pattern layer 12 was formed by applying ink in which vinyl chloride-vinyl acetate copolymer and acrylic resin were mixed by the gravure printing method to the first vinyl chloride-based resin layer 11, the pattern simulating the cut surface of stone. A sheet in a state where the pattern layer 12 is formed on the first vinyl chloride-based resin layer 11 is referred to as a "printed sheet".

[0038] The second vinyl chloride-based resin layer 13 contains a vinyl chloride-based resin. By using a transparent or translucent resin to have a certain degree of transparency, the pattern of the pattern layer 12 and the color of the first vinyl chloride-based resin layer 11 can be clearly visually recognized through the second vinyl chloride-based resin layer 13. The second vinyl chloride-based resin layer 13 can be provided with an uneven pattern 13a on its surface. In FIG. 1, an example in which the uneven pattern 13a of the second vinyl chloride-based resin layer 13 is the outermost surface is described. However, the present invention is not limited to this. For example, a surface protection layer formed of a hard coat agent, an overcoat layer to which a weathering agent such as an ultraviolet absorber is added, or the like may be provided on the second vinyl chloride-based resin layer 13.

[0039] In the following Examples and Comparative Examples, the second vinyl chloride-based resin layer 13 was produced by laminating a transparent film made of a vinyl chloride-based resin with a thickness of 150 μm on the pattern layer 12 of the previously produced printed sheet. By pressing an embossing plate using an embossing machine during lamination, the uneven pattern 13a was formed simultaneously with the lamination of the printed sheet and the second vinyl chloride-based resin layer 13. The transparent film contained a vinyl chloride homopolymer with an average degree of polymerization of 1500 and a plasticizer. As the plasticizer, 20 parts by mass of dioctyl phthalate was used with respect to 100 parts by mass of the vinyl chloride homopolymer. In Examples and Comparative Examples, the second vinyl chloride-based resin layer did not contain calcium carbonate particles or titanium oxide particles.

[0040] The primer layer 14 is provided as needed to assist in bonding the vacuum-formed decorative sheet 10 to the substrate, which is the adherend. The primer layer can be formed by applying a known primer agent to the back surface of the first vinyl chloride resin layer 11 (the surface opposite to the second vinyl chloride resin layer 13). Examples of the primer agent include urethane resin-based primer agents composed of acrylic-modified urethane resins, etc., and primer agents composed of urethane-cellulose-based resins (for example, resins obtained by adding hexamethylene diisocyanate to a mixture of urethane and nitrocellulose). The thickness of the primer layer 14 is not particularly limited, but is, for example, 0.1 to 10 μm, and can be about 1 to 5 μm.

[0041] In the examples and comparative examples described below, the primer layer 14 was formed by applying a urethane resin-based primer agent to the back surface of the first vinyl chloride resin layer 11 after the above embossing (laminating) process.

[0042] Figure 2 is a diagram comparing an example and a comparative example of the vacuum-formed decorative sheet 10 of the present embodiment. In Examples 1 to 4 and Comparative Example 1, a film colored without using titanium oxide particles as the base material of the first vinyl chloride resin layer (described as the colored base material in Figure 2) was used. Note that Examples 1 to 4 contain calcium carbonate particles in the base material of the first vinyl chloride resin layer, while Comparative Example 1 does not contain calcium carbonate particles in the base material of the first vinyl chloride resin layer. Also, Comparative Example 2 used a film colored white using titanium oxide particles as the base material of the first vinyl chloride resin layer (described as the white base material in Figure 2). These examples and comparative examples had the same configuration except for the difference in the base material of the first vinyl chloride resin layer.

[0043] The "number of exposed particles" in Figure 2 is the result of observing the surface of the first vinyl chloride resin layer before bonding with a microscope and counting the number of protruding particles (the number of protrusions 11b) per 1 mm 2 of the surface.

[0044] The "number of particles adhering to the second vinyl chloride-based resin layer after peeling" in Figure 2 is the result of observing the surface of the second vinyl chloride-based resin layer on the side of the first vinyl chloride-based resin layer 11, that is, the peeling surface, after measuring the interlayer peeling force described below, and counting the number of particles adhering per 1 mm 2 It is the result of counting the number of particles adhering per 1 mm

[0045] The elongation in the MD (machine direction, longitudinal direction) and CD (cross machine direction, perpendicular direction) in Figure 2 indicates the elongation when the first vinyl chloride-based resin layer (or the white vinyl chloride-based resin layer) alone is pulled in the specified direction at room temperature

[0046] The measured value of the interlayer peeling force in Figure 2 is the measurement result for a sample that reproduced the state after vacuum forming by heating the decorative sheet for vacuum forming to 70°C, stretching it 300% in the MD direction, and then cooling it to room temperature (20°C). Figure 2 shows the result of measuring the peeling strength between the first vinyl chloride-based resin layer and the second vinyl chloride-based resin layer for this sample that reproduced the state after vacuum forming (conditions: peeling direction 180°, peeling speed 100 mm / min.). It can be said that the higher the value of the interlayer peeling force, the better the adhesion between the layers, and the less likely it is to cause interlayer peeling during vacuum forming

[0047] The decorative sheets of Examples 1 to 4 have good adhesion between the layers. Here, the target value of the interlayer peeling force was set to 10 N / inch. Therefore, it is difficult to peel between the first vinyl chloride-based resin layer and the second vinyl chloride-based resin layer during vacuum forming. On the other hand, the decorative sheet of Comparative Example 1 has insufficient adhesion between the layers. Therefore, there is a possibility of peeling between the first vinyl chloride-based resin layer and the second vinyl chloride-based resin layer during vacuum forming. The decorative sheet of Comparative Example २ has good adhesion between the layers, but the design by the pattern layer has become lighter in color than desired

[0048] The decorative sheets of Examples 1 to 3 further have good elongation. Therefore, their suitability for the vacuum forming method is superior to that of the decorative sheet of Example 4

[0049] In Examples 1 to 4, by incorporating calcium carbonate particles into the first vinyl chloride resin layer, the reason for obtaining good adhesion between the first vinyl chloride resin layer and the second vinyl chloride resin layer is presumed to be that at least a part of the protrusions 11b resulting from the first vinyl chloride resin layer containing calcium carbonate particles penetrates (bites into) the second vinyl chloride resin layer. Therefore, for the decorative sheets of Example 2 and Comparative Example 1, the second vinyl chloride resin layer was peeled off from the first vinyl chloride resin layer 11, and the surface of the second vinyl chloride resin layer that had been joined to the first vinyl chloride resin layer was photographed. FIG. 3 is a view showing the peeled surface of the second vinyl chloride resin layer 13 after peeling for Example 2. FIG. 4 is a view showing the peeled surface of the second vinyl chloride resin layer 13 after peeling for Comparative Example 1.

[0050] As shown in FIGS. 3 and 4, particles adhered to the surface of the second vinyl chloride resin layer that originally contained almost no particles. Also, in Example 2 where the content of inorganic particles in the first vinyl chloride resin layer was high, the number of particles adhering to the surface of the second vinyl chloride resin layer was larger than in Comparative Example 1 where the content of inorganic particles in the first vinyl chloride resin layer was low. These observation results support the presumption that the adhesion between the second vinyl chloride resin layer and the first vinyl chloride resin layer became good due to the particles of the first vinyl chloride resin layer biting into (penetrating) the second vinyl chloride resin layer.

Explanation of Reference Numerals

[0051] 10 Decorative sheet for vacuum forming 11 First vinyl chloride resin layer 11a Inorganic particles 11b Protrusions 12 Pattern layer 13 Second vinyl chloride resin layer 13a Concavo-convex pattern 14 Primer layer

Claims

1. A first vinyl chloride resin layer containing a vinyl chloride resin and a colorant, A second vinyl chloride resin layer laminated on the first vinyl chloride resin layer and containing a vinyl chloride resin, A decorative sheet for vacuum forming, comprising: The first vinyl chloride resin layer does not contain titanium oxide particles, or the content of titanium oxide particles in the first vinyl chloride resin layer is less than 1 part by mass, The first vinyl chloride resin layer contains inorganic particles, and a part of the inorganic particles is calcium carbonate particles, The first vinyl chloride resin layer contains 8 parts by mass or more and 18 parts by mass or less of the inorganic particles with respect to the resin component, and 3 parts by mass or more and 11 parts by mass or less of the calcium carbonate particles with respect to the resin component, The surface of the first vinyl chloride resin layer on the side of the second vinyl chloride resin layer has protrusions caused by containing the calcium carbonate particles, At least a part of the protrusions penetrates into the second vinyl chloride resin layer, A decorative sheet for vacuum forming.

2. The decorative sheet for vacuum forming according to Claim 1, The protrusions on the surface of the first vinyl chloride resin layer on the side of the second vinyl chloride resin layer are formed in the range of 1.1×10⁶ or more and 1.3×10⁶ or less, A decorative sheet for vacuum forming.

3. In the decorative sheet for vacuum forming according to Claim 1 or Claim 2, A pattern layer is disposed between the first vinyl chloride resin layer and the second vinyl chloride resin layer, A decorative sheet for vacuum forming.

4. In the decorative sheet for vacuum forming according to Claim 3, The first vinyl chloride resin layer contains 16 parts by mass or less of the inorganic particles with respect to the resin component, A decorative sheet for vacuum forming.

5. A method for manufacturing a decorative material, comprising: A step of preparing a substrate formed into a three-dimensional shape and a decorative sheet for vacuum forming according to any one of Claims 1 to 4, A step of softening the decorative sheet by heating, A step of vacuum-sucking the softened decorative sheet onto the three-dimensional shape of the substrate by a decompression operation. A method for manufacturing a decorative material.

6. A decorative material, comprising: A substrate formed into a three-dimensional shape, and A decorative sheet for vacuum forming according to any one of Claims 1 to 4 joined along the three-dimensional shape of the substrate. A decorative material in which the second vinyl chloride resin layer of the decorative sheet for vacuum forming, the first vinyl chloride resin layer of the decorative sheet for vacuum forming, and the base material are laminated in this order.

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