Decorative sheets and decorative components
The decorative sheet enhances the physical properties of cosmetic sheets using biomass-derived polypropylene, achieving comparable functionality to fossil fuel-derived polypropylene while reducing environmental impact.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-09-06
- Publication Date
- 2026-03-18
AI Technical Summary
There is a demand to enhance the physical properties of cosmetic sheets using resins derived from biomass while maintaining their functionality and reducing environmental impact.
A decorative sheet comprising a colored resin layer made of a light-shielding thermoplastic resin, a patterned layer with a pattern, and a transparent resin layer made of a light-transmitting thermoplastic resin, where at least one layer contains biomass-derived polypropylene with specific X-ray diffraction, melting peak temperature, melting peak area, puncture strength, and non-volatile residue characteristics, enhancing physical properties.
The decorative sheet achieves physical properties comparable to those of fossil fuel-derived polypropylene, while reducing carbon emissions by using biomass-derived resin, and improving puncture strength and durability.
Smart Images

Figure 2026049441000001_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a cosmetic sheet and a cosmetic member.
Background Art
[0002] When a cosmetic sheet using an olefin resin as a main raw material is discarded after being used on the surface of the interior doors or floors of a house, it emits carbon dioxide. Therefore, it is considered to use an olefin resin derived from biomass generated from waste sugarcane molasses, waste food oil, etc. For example, in Patent Document 1 below, a cosmetic sheet capable of exhibiting physical properties comparable to those of PE derived from fossil fuels by using biomass-derived high-density (HD) polyethylene (PE) is proposed.
Prior Art Documents
Patent Documents
[0003]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0004] Currently, in the market, there is a strong demand to further improve the physical properties of cosmetic sheets using resins derived from biomass. Therefore, in view of such circumstances, an object of the present invention is to provide a cosmetic sheet and a cosmetic member that can further enhance physical properties while using a resin derived from biomass.
Means for Solving the Problems
[0005] To solve the aforementioned problems, the present invention provides a decorative sheet comprising a colored resin layer made of a light-shielding thermoplastic resin, a patterned layer having a pattern, and a transparent resin layer made of a light-transmitting thermoplastic resin, laminated in this order, wherein at least one of the colored resin layer and the transparent resin layer contains biomass-derived polypropylene polymerized from a monomer containing biomass-derived propylene, and the biomass-derived polypropylene is characterized in that, in the X-ray diffraction pattern obtained by X-ray diffraction measurement using the 2θ-θ method with CuKα rays, the ratio R (=I1 / I0) of the overlapping peak intensities I1 of the crystalline (111) plane, (13-1) plane, and (041) plane to the amorphous-derived peak intensity I0 is 0.5 or more and 0.7 or less.
[0006] Furthermore, the decorative sheet according to the present invention is a decorative sheet in which a colored resin layer made of a light-shielding thermoplastic resin, a patterned layer having a pattern, and a transparent resin layer made of a light-transmitting thermoplastic resin are laminated in this order, wherein at least one of the colored resin layer and the transparent resin layer contains biomass-derived polypropylene polymerized from a monomer containing biomass-derived propylene, and the biomass-derived polypropylene is characterized in that the melting peak temperature of the polypropylene phase in differential scanning calorimetry is 433K or more and 460K or less.
[0007] Furthermore, the decorative sheet according to the present invention is a decorative sheet in which a colored resin layer made of a light-shielding thermoplastic resin, a patterned layer having a pattern, and a transparent resin layer made of a light-transmitting thermoplastic resin are laminated in this order, wherein at least one of the colored resin layer and the transparent resin layer contains biomass-derived polypropylene polymerized from a monomer containing biomass-derived propylene, and the biomass-derived polypropylene is characterized in that the melting peak temperature of the polypropylene phase in differential scanning calorimetry is within the range of 97% to 103% of the melting peak temperature of the polypropylene phase of fossil fuel-derived polypropylene.
[0008] Furthermore, the decorative sheet according to the present invention is a decorative sheet in which a colored resin layer made of a light-shielding thermoplastic resin, a patterned layer having a pattern, and a transparent resin layer made of a light-transmitting thermoplastic resin are laminated in this order, wherein at least one of the colored resin layer and the transparent resin layer contains biomass-derived polypropylene polymerized from a monomer containing biomass-derived propylene, and the biomass-derived polypropylene is characterized in that the melting peak area of the polypropylene phase in differential scanning calorimetry is 75 J / g or more and 175 J / g or less.
[0009] Furthermore, the decorative sheet according to the present invention is a decorative sheet in which a colored resin layer made of a thermoplastic resin having light-shielding properties, a patterned layer having a pattern, and a transparent resin layer made of a thermoplastic resin having light-transmitting properties are laminated in this order, wherein at least one of the colored resin layer and the transparent resin layer contains biomass-derived polypropylene polymerized from a monomer containing biomass-derived propylene, and the biomass-derived polypropylene is characterized in that the melting peak area of the polypropylene phase in differential scanning calorimetry is 60% to 140% of the melting peak area of the polypropylene phase of fossil fuel-derived polypropylene.
[0010] Furthermore, the decorative sheet according to the present invention is a decorative sheet in which a colored resin layer made of a thermoplastic resin having light-shielding properties, a patterned layer having a pattern, and a transparent resin layer made of a thermoplastic resin having light-transmitting properties are laminated in this order, wherein at least one of the colored resin layer and the transparent resin layer contains biomass-derived polypropylene polymerized from a monomer containing biomass-derived propylene, and the biomass-derived polypropylene is characterized in that it has a puncture strength of 5N to 7N when its thickness is 50 μm or more and 70 μm or less.
[0011] Furthermore, the decorative sheet according to the present invention is a decorative sheet in which a colored resin layer made of a light-shielding thermoplastic resin, a patterned layer having a pattern, and a transparent resin layer made of a light-transmitting thermoplastic resin are laminated in this order, wherein at least one of the colored resin layer and the transparent resin layer contains biomass-derived polypropylene polymerized from a monomer containing biomass-derived propylene, and the amount of non-volatile residue of the biomass-derived polypropylene is 0.1 mg / cm³. 2 The following characteristics apply.
[0012] Furthermore, the decorative sheet according to the present invention is a decorative sheet in which a colored resin layer made of a thermoplastic resin having light-shielding properties, a patterned layer having a pattern, and a transparent resin layer made of a thermoplastic resin having light-transmitting properties are laminated in this order, wherein at least one of the colored resin layer and the transparent resin layer contains biomass-derived polypropylene polymerized from a monomer containing biomass-derived propylene, and the biomass-derived polypropylene is characterized in that the mass of non-volatile residue is 0.1 or more and 10 or less in ratio to the mass of non-volatile residue of fossil fuel-derived polypropylene.
[0013] Furthermore, the decorative sheet according to the present invention is a decorative sheet in which a colored resin layer made of a thermoplastic resin having light-shielding properties, a patterned layer having a pattern, and a transparent resin layer made of a thermoplastic resin having light-transmitting properties are laminated in this order, wherein at least one of the colored resin layer and the transparent resin layer contains biomass-derived polypropylene polymerized from a monomer containing biomass-derived propylene, and the biomass-derived polypropylene is characterized in that the proportion of aliphatic branched hydrocarbons in the aliphatic hydrocarbons in the non-volatile residue is 90% by mass or more.
[0014] Furthermore, in the decorative sheet according to the present invention, it is preferable that the colored resin layer has a thickness of 30 μm or more and 100 μm or less.
[0015] Further, in the cosmetic sheet according to the present invention, in the above-described cosmetic sheet, it is preferable that the transparent resin layer has a thickness of 10 μm or more and 150 μm or less.
[0016] Further, in the cosmetic sheet according to the present invention, in the above-described cosmetic sheet, it is preferable that a surface protection layer having light transmissivity and protecting the surface is provided on the transparent resin layer.
[0017] Further, in the cosmetic sheet according to the present invention, in the above-described cosmetic sheet, it is preferable that a base layer is laminated on the side of the colored resin layer opposite to the lamination side of the pattern layer.
[0018] Further, in the cosmetic sheet according to the present invention, in the above-described cosmetic sheet, it is preferable that a transparent adhesive layer having light transmissivity and adhesiveness is provided between the pattern layer and the transparent resin layer.
[0019] On the other hand, in order to solve the above-described problems, the cosmetic member according to the present invention is characterized by including a base material and the above-described cosmetic sheet laminated on the base material.
Advantages of the Invention
[0020] According to the cosmetic sheet and the cosmetic member of the present invention, it is possible to have the same functions as polypropylene derived from fossil fuels while using a resin derived from biomass, and the physical properties can be enhanced compared to the case of using high-density polyethylene or low-density polyethylene derived from biomass.
Brief Description of the Drawings
[0021] [Figure 1] It is a cross-sectional view showing a schematic structure of a main embodiment of the cosmetic sheet according to the present invention. [Figure 2] It is a cross-sectional view showing a schematic structure of a main embodiment of the cosmetic member according to the present invention.
Modes for Carrying Out the Invention
[0022] Embodiments of the decorative sheet and decorative member according to the present invention will be described based on the drawings. It should be noted that the present invention is not limited to the embodiments described below based on the drawings, and various technical matters described in each embodiment can be combined or replaced as needed.
[0023] [Main Implementations] The main embodiments of the decorative sheet and decorative member according to the present invention will be described with reference to Figures 1 and 2.
[0024] <Overall composition of the decorative sheet> As shown in Figure 1, a pattern layer 12 printed with ink to form a pattern is provided on one side (the top surface in Figure 1) of a colored resin layer 11 made of opaque (light-shielding) polypropylene (PP) resin. A transparent resin layer 14 made of light-transmitting (transparent) PP resin is provided on one side (the top surface in Figure 1) of the pattern layer 12. A transparent adhesive layer 13, which is light-transmitting and adhesive, is interposed between the pattern layer 12 and the transparent resin layer 14.
[0025] On one side of the transparent resin layer 14 (the top surface in Figure 1), which rests on the transparent resin layer 14, a surface protection layer 15 is provided that has light transmittance (transparency) and protects the surface. On the other side of the colored resin layer 11 (the bottom surface in Figure 1), which is the back side of the colored resin layer 11, a base layer 16 is provided to improve adhesion. On the surface side (the top side in Figure 1) of the decorative sheet 10 having such layers 11 to 16, an embossed shape 10a is formed on the surface protection layer 15 and the transparent resin layer 14, which is concave in accordance with the pattern of the pattern layer 12.
[0026] In other words, the decorative sheet 10 according to this embodiment has a colored resin layer 11, a pattern layer 12, a transparent adhesive layer 13, a transparent resin layer 14, and a surface protection layer 15 laminated in this order, with a base layer 16 laminated on the side of the colored resin layer 11 opposite to the laminated side of the pattern layer 12.
[0027] <Colored resin layer 11> The colored resin layer 11 is a thermoplastic resin containing biomass-derived PP resin and a coloring agent such as an organic pigment or an inorganic pigment. The biomass-derived PP resin is obtained by polymerizing a monomer containing biomass-derived propylene (details will be described later). As the coloring agent, inorganic pigments are preferred, and examples include calcium carbonate, titanium dioxide, carbon black, silica, chromium, antimony, titanium composites, and various other oxides.
[0028] The colored resin layer 11 may contain various additives as needed, such as fillers, ultraviolet absorbers, light stabilizers, heat stabilizers, antioxidants, antistatic agents, lubricants, flame retardants, antibacterial agents, antifungal agents, friction reducers, light scattering agents, and gloss adjusters.
[0029] The colored resin layer 11 is preferably 30 μm to 100 μm thick, more preferably 40 μm to 80 μm thick, and even more preferably 50 μm to 70 μm thick. A thickness of 30 μm or more allows for a sufficiently flat finish, accommodating unevenness and steps on the substrate to which it is applied. A thickness of 70 μm or less helps to suppress increases in manufacturing costs.
[0030] <Picture Layer 12> The pattern layer 12 is provided to add design appeal and is formed from printing ink or paint. Such printing ink or paint can be obtained, for example, by dissolving or dispersing a coloring agent such as a pigment or dye together with a binder resin in a suitable diluting solvent.
[0031] Examples of pigments include condensed azo, insoluble azo, quinacridone, isoindoline, anthraquinone, imidazolon, cobalt, phthalocyanine, carbon, titanium dioxide, iron oxide, mica, and other pearl pigments. Examples of binder resins include urethane resins, acrylic resins, vinyl chloride acetate resins, polyimide resins, nitrated cotton, and mixtures thereof.
[0032] The pattern layer 12 can exhibit various functions by containing functional additives such as extender pigments, plasticizers, dispersants, surfactants, tackifiers, adhesion aids, drying agents, curing agents, curing accelerators, and curing retarders. Any pattern can be applied to the pattern layer 12, such as wood grain patterns, stone patterns, fabric patterns, abstract patterns, geometric patterns, letters, symbols, solid colors, or combinations thereof.
[0033] The pattern layer 12 preferably has a thickness of 1 μm or more and 10 μm or less. A thickness of 1 μm or more ensures that the pattern is clearly displayed, while a thickness of 10 μm or less improves printability and suppresses increases in manufacturing costs. Such a pattern layer 12 can be formed by applying printing ink or paint using various printing methods such as gravure printing or offset printing, or various coating methods such as gravure coating or roll coating.
[0034] <Transparent adhesive layer 13> The transparent adhesive layer 13 adheres the pattern layer 12 to the transparent resin layer 14 and has transparency such as colorless, colored, or semi-transparent, allowing the pattern layer 12 to be visible. The transparent adhesive layer 13 can be made of transparent resin such as urethane, acrylic, ethylene-vinyl acetate copolymer, vinyl chloride-vinyl acetate copolymer, polyester, or polyolefin. Among these, a polyolefin-based adhesive is preferable, and a PP-based adhesive is most preferable, considering the adhesion to the transparent resin layer 14.
[0035] The transparent adhesive layer 13 is preferably 1 μm or more and 20 μm or less in thickness. If it is 1 μm or more, the pattern layer 12 and the transparent resin layer 14 can be reliably bonded, and if it is 20 μm or less, a decrease in the visibility of the pattern on the pattern layer 12 can be reliably prevented, and an increase in manufacturing costs can be suppressed. In addition, if sufficient adhesion can be achieved between the pattern layer 12 and the transparent resin layer 14, the transparent adhesive layer 13 can be omitted.
[0036] <Transparent resin layer 14> The transparent resin layer 14 is a thermoplastic resin containing biomass-derived PP resin and an ultraviolet absorber (UVA), and has transparency such as colorless, colored, or semi-transparent, allowing the pattern layer 12 to be seen. The biomass-derived PP resin is polymerized from a monomer containing biomass-derived propylene (details will be described later). Examples of UVA include benzotriazole and triazine types.
[0037] Examples of benzotriazole derivatives include 2-(2-hydroxy-5-t-butylphenyl)-2H-benzotriazole, 2-(5-methyl-2-hydroxyphenyl)benzotriazole, 2-[2-hydroxy-3,5-bis(α,α-dimethylbenzyl)phenyl]-2H-benzotriazole, 2-(3,5-di-t-butyl-2-hydroxyphenyl)benzotriazole, 2-(3-t-butyl-5-methyl-2-hydroxyphenyl)-5-chlorobenzotriazole, 2-(3,5-di-t-butyl-2-hydroxyphenyl)-5-chlorobenzotriazole, 2-(3,5-di-t-amyl-2-hydroxyphenyl)benzotriazole, 2-(2'-hydroxy-5'-t-octylphenyl)benzotriazole, and mixtures, modified products, polymers, and derivatives thereof.
[0038] Examples of triazine compounds include 2-(4,6-diphenyl-1,3,5-triazine-2-yl)-5-[(hexyl)oxy]-phenol, 2-[4-[(2-hydroxy-3-dodecyloxypropyl)oxy]-2-hydroxyphenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine, 2-[4-[(2-hydroxy-3-tridecyloxypropyl)oxy]-2-hydroxyphenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine, 2,4-bis(2,4-dimethylphenyl)-6-(2-hydroxy-4-isooctyloxyphenyl)-s-triazine, and mixtures, modified products, polymers, and derivatives thereof.
[0039] The transparent resin layer 14 preferably contains 0.5 parts by mass or more and 3 parts by mass of UVA per 100 parts by mass of thermoplastic resin. If it is 0.5 parts by mass or more, a reliable improvement in weather resistance can be achieved, and if it is 3 parts by mass or less, the bleed-out phenomenon (a phenomenon in which the surface layer becomes bleached and powdered due to aggregation and solidification over time) can be suppressed.
[0040] The transparent resin layer 14 may also contain various additives. Examples of additives include plasticizers, UV stabilizers, color inhibitors, matting agents, deodorizers, flame retardants, weathering agents, antistatic agents, thread friction reducers, slip agents, mold release agents, antioxidants, ion exchange agents, and coloring pigments. These additives are preferably mixed in an amount of 1% to 20% by mass relative to the entire transparent resin layer 14, and more preferably in an amount of 1% to 10% by mass.
[0041] The transparent resin layer 14 is preferably 10 μm or more and 150 μm or less in thickness, more preferably 50 μm or more and 120 μm or less, and even more preferably 55 μm or more and 100 μm or less. If it is 10 μm or more, it is easy to make the emboss 10a into a good shape, and if it is 150 μm or less, it is possible to suppress the increase in manufacturing costs.
[0042] <Surface protective layer 15> The surface protection layer 15 is provided to impart weather resistance, scratch resistance, stain resistance, and aesthetic appeal, and has transparency such as colorless, colored, or semi-transparent, allowing the pattern layer 12 to be visible through the transparent resin layer 14, etc. The surface protection layer 15 contains weather-resistant additives such as UVA, light stabilizers (HALS), and antioxidants in a resin material such as polyester resin, acrylic resin, or fluororesin.
[0043] Examples of UVA include benzotriazole-based and triazine-based UVA compounds as described earlier. The surface protective layer 15 preferably contains UVA in an amount of 1.0% to 3.0% by mass relative to its total mass. A concentration of 1.0% by mass or more ensures a reliable improvement in weather resistance, while a concentration of 3.0% by mass or less suppresses the bleed-out phenomenon.
[0044] Examples of HALS include N-OR type hindered amines. Examples of hindered amines include bis(2,2,6,6-tetramethyl-1-(octyloxy)-4-piperidinyl) decandioate and 2,4-bis[N-butyl-N-(1-cyclohexyloxy-2,2,6,6-tetramethylpiperidine-4-yl)amino]-6-(2-hydroxyethylamine)-1,3,5-triazine.
[0045] The surface protective layer 15 preferably contains HALS in an amount of 1.0% to 3.0% by mass relative to its total mass. If it is 1.0% by mass or more, a reliable improvement in weather resistance can be achieved, and if it is 3.0% by mass or less, the bleed-out phenomenon can be suppressed.
[0046] Examples of antioxidants include hindered phenols. Examples of hindered phenols include pentaerythritol tetrakis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] and 2,2-thiodiethylenebis[3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate].
[0047] The surface protective layer 15 preferably contains an antioxidant in an amount of 1.0% to 3.0% by mass relative to its total mass. An amount of 1.0% or more by mass ensures a reliable improvement in weather resistance, while an amount of 3.0% or less by mass suppresses the bleed-out phenomenon. From the viewpoint of weather resistance, the ratio of antioxidant to HALS is preferably 1:2. The surface protective layer 15 preferably has a thickness of 6 μm to 12 μm.
[0048] <Base layer 16> The underlayer 16 is provided as an underlayer to improve adhesion to the substrate, and is preferably made of a known resin coating for underlayers containing, for example, epoxy resin, polyester resin, urethane resin, melamine resin, alkyd resin, phenolic resin, acrylic resin, etc., with a thickness of 1 μm or more and 10 μm or less.
[0049] <Decorative materials> As shown in Figure 2, the decorative sheet 10 is laid on the surface of the base material 101 (top surface in Figure 2) with the other side of the base layer 16 (bottom surface in Figure 2) facing it. An adhesive (not shown) is interposed between the base layer 16 of the decorative sheet 10 and the surface of the base material 101. Thus, the decorative sheet 10 is bonded to the surface of the base material 101 via the adhesive. In other words, the decorative member 100 according to this embodiment is constructed by laminating the decorative sheet 10 onto the surface of the base material 101 via the adhesive.
[0050] Regarding biomass-derived PP (polypropylene) As explained earlier, biomass-derived PP is obtained by polymerizing a monomer containing biomass-derived propylene. The biomass-derived propylene is not particularly limited as long as it is propylene produced using biomass as a raw material by conventionally known methods. By using biomass-derived propylene as a raw material monomer, the PP obtained by polymerization becomes biomass-derived.
[0051] Incidentally, atmospheric carbon dioxide contains a certain percentage (105.5 pMC) of radioactive carbon (C14). Therefore, plants such as corn, which grow by absorbing atmospheric carbon dioxide, also contain about 105.5 pMC of C14. On the other hand, fossil fuels contain almost no C14.
[0052] Therefore, by measuring the proportion of C14 contained in the total carbon atoms in PP, the proportion of biomass-derived carbon in PP, i.e., the biomass concentration (biomass content) of PP can be determined. Specifically, the C14 content in PP is measured by P C14 In this case, the carbon content P derived from biomass bio In other words, the biomass concentration can be calculated using the following formula (1).
[0053] P bio (%)=P C14 / 105.5×100 (1)
[0054] If PP is made entirely from biomass-derived propylene, theoretically, the biomass concentration of PP will be 100%, and the biomass degree of PP will be 100%. On the other hand, if only propylene derived from fossil fuels is used, the biomass concentration of PP will be 0%, and the biomass degree of PP will be 0. It should be noted that PP can contain not only biomass-derived propylene but also fossil fuel-derived propylene as raw material monomers, meaning that it is possible to have a biomass degree of less than 100%.
[0055] The polymerization method for such a monomer containing biomass-derived propylene can be any conventionally known method and is not particularly limited. The polymerization apparatus can also be any conventionally known apparatus and is not particularly limited. Therefore, the polymerization temperature and polymerization pressure are set appropriately according to the polymerization method and polymerization apparatus.
[0056] Polymerization of monomers containing biomass-derived propylene involves selecting catalysts and methods appropriately depending on the type of PP to be polymerized, such as homo-PP, random PP, or blocked PP. For example, as polymerization catalysts, multi-site catalysts such as Ziegler-Natta catalysts and single-site catalysts such as metallocene catalysts are appropriately selected.
[0057] The polymerization method can be appropriately selected from gas-phase polymerization, slurry polymerization, solution polymerization, high-pressure ionic polymerization, etc. It is preferable to carry out the polymerization in one or more stages. The biomass-derived PP obtained in this way can be used individually as homo-PP, random PP, or block PP, or as a mixture of two or more types.
[0058] Regarding thermoplastic resins containing biomass-derived PP: Thermoplastic resins containing biomass-derived PP preferably contain 5% by mass or more of biomass-derived PP, more preferably 50% by mass or more, and even more preferably 100% by mass. In other words, thermoplastic resins containing biomass-derived PP preferably have a biomass concentration of 5% or more, more preferably 50% or more, and even more preferably 100%. When biomass-derived PP is contained at 5% by mass or more, the amount of fossil fuels used can be reduced compared to conventional materials, resulting in a carbon-neutral decorative sheet.
[0059] Thermoplastic resins containing biomass-derived PP may also contain two or more types of PP with different biomass concentrations, such that the biomass concentration falls within the above range. Thermoplastic resins containing biomass-derived PP may also contain fossil fuel-derived PP, which is polymerized from a monomer containing propylene derived from fossil fuels.
[0060] In other words, the thermoplastic resin described above can also be a mixture of biomass-derived PP and fossil fuel-derived PP. The method of mixing biomass-derived PP and fossil fuel-derived PP is not particularly limited and can be done by conventionally known methods such as dry blending or melt blending.
[0061] A thermoplastic resin obtained by mixing biomass-derived PP and fossil fuel-derived PP preferably contains 5% by mass or more of biomass-derived PP and 95% by mass or less of fossil fuel-derived PP, and more preferably contains 50% by mass or more of biomass-derived PP and 50% by mass or less of fossil fuel-derived PP. In other words, a thermoplastic resin obtained by mixing biomass-derived PP and fossil fuel-derived PP preferably has a biomass concentration of 5% or more, and more preferably 50% or more.
[0062] 《Percentage of peak intensity obtained by X-ray diffraction》 Here, the biomass-derived PP used as the thermoplastic resin is characterized in that, in the X-ray diffraction pattern obtained by the 2θ-θ method using CuKα rays, the ratio R (=I1 / I0) of the intensity I1 of the peak top detected at 2θ=21.2°~21.6°, where the three crystalline (111), (13-1), and (041) planes overlap, to the intensity I0 of the peak detected at 2θ=15°, which is of amorphous origin, is between 0.5 and 0.7.
[0063] In biomass-derived PP exhibiting such a value for the above-mentioned proportion R, the value of proportion R is approximately equivalent to that of fossil fuel-derived PP. Therefore, the decorative sheet 10 and decorative member 100 according to this embodiment can exhibit physical properties equivalent to those of decorative sheets and decorative members in which fossil fuel-derived PP is applied to the colored resin layer and the transparent resin layer.
[0064] Melting peak temperature determined by differential scanning calorimetry. Furthermore, the biomass-derived PP used as the thermoplastic resin exhibits a melting peak temperature of the PP phase in differential scanning calorimetry (DSC) of 433K to 460K. This melting peak temperature for biomass-derived PP is approximately equivalent to that of fossil fuel-derived PP, specifically 97% to 103% of the melting peak temperature of the PP phase in DSC for fossil fuel-derived PP. Therefore, the decorative sheet 10 and decorative component 100 according to this embodiment can exhibit physical properties equivalent to those of decorative sheets and decorative components in which fossil fuel-derived PP is applied to the colored resin layer and transparent resin layer.
[0065] 《Melting peak area by DSC》 Furthermore, the biomass-derived PP used as the thermoplastic resin has a melting peak area of the PP phase in DSC of 75 J / g to 175 J / g. The melting peak area of biomass-derived PP exhibiting such a value is approximately equivalent to the melting peak area of fossil fuel-derived PP, that is, it is 60% to 140% of the melting peak area of the PP phase in DSC of fossil fuel-derived PP. Therefore, the decorative sheet 10 and decorative member 100 according to this embodiment can exhibit physical properties equivalent to those of a decorative sheet and decorative member in which fossil fuel-derived PP is applied to the colored resin layer and the transparent resin layer.
[0066] 《Puncture Strength》 Furthermore, the biomass-derived PP used as the thermoplastic resin has a puncture strength of 5N to 7N when it is 50μm to 70μm thick, as specified in "7.5" (Puncture Strength Test) of the Japanese Industrial Standard "JIS Z 1707:2019" (General Rules for Plastic Films for Food Packaging). Biomass-derived PP exhibiting such a puncture strength is approximately equivalent to the puncture strength value exhibited by fossil fuel-derived PP. Therefore, the decorative sheet 10 and decorative component 100 according to this embodiment can exhibit physical properties equivalent to those of decorative sheets and decorative components in which fossil fuel-derived PP is applied to the colored resin layer and the transparent resin layer.
[0067] 《Amount of non-volatile residue》 Furthermore, the biomass-derived PP used as the thermoplastic resin has an NVR of 0.1 mg / cm³. 2 The following applies. For biomass-derived PP exhibiting such NVR values, the NVR values are approximately equivalent to those of fossil fuel-derived PP. That is, the NVR mass of biomass-derived PP is between 0.1 and 10 in ratio to the NVR mass of fossil fuel-derived PP. Therefore, the decorative sheet 10 and decorative member 100 according to this embodiment can exhibit physical properties equivalent to those of decorative sheets and decorative members in which fossil fuel-derived PP is applied to the colored resin layer and the transparent resin layer.
[0068] 《Proportion of aliphatic branched hydrocarbons in NVR (Nutrient Velocity Rating)》 Furthermore, the biomass-derived PP used as the thermoplastic resin has a proportion of aliphatic branched hydrocarbons in the NVR (Natural Viable Resin) of 90% by mass or more, as determined by gas chromatography-mass spectrometry. Biomass-derived PP with such a proportion is approximately equivalent to the proportion shown for fossil fuel-derived PP. Therefore, the decorative sheet 10 and decorative component 100 according to this embodiment can exhibit physical properties equivalent to those of decorative sheets and decorative components in which fossil fuel-derived PP is applied to the colored resin layer and transparent resin layer.
[0069] <Effects> In the decorative sheet 10 and decorative member 100 according to this embodiment, since the thermoplastic resin of the colored resin layer 11 and the transparent resin layer 14 contains biomass-derived PP having the above-described properties, it is possible to achieve physical properties equivalent to those of a decorative sheet and decorative member having a colored resin layer and a transparent resin layer made of fossil fuel-derived PP.
[0070] Therefore, according to the decorative sheet 10 and decorative member 100 of this embodiment, it is possible to have the same functionality as fossil fuel-derived PP while using biomass-derived resin, and to improve physical properties compared to when using biomass-derived high-density (HD) or low-density (LD) PE resin.
[0071] [Other embodiments] In the embodiments described above, the case of a decorative sheet 10 and decorative member 100 in which both the colored resin layer 11 and the transparent resin layer 14 are made of thermoplastic resin containing biomass-derived PP was applied, but the present invention is not limited to this. As another embodiment, for example, it is also possible to make a decorative sheet and decorative member in which only one of the colored resin layer and the transparent resin layer is made of thermoplastic resin containing biomass-derived PP.
[0072] However, as in the embodiment described above, if the decorative sheet 10 and decorative member 100 are made by applying a thermoplastic resin containing biomass-derived PP to both the colored resin layer 11 and the transparent resin layer 14, the amount of carbon dioxide emitted when they are disposed of can be greatly reduced, which is highly preferable. [Examples]
[0073] Examples of the decorative sheet and decorative member according to the present invention will be described in detail. However, the present invention is not limited to the following examples described in detail.
[0074] [Evaluation of physical properties of biomass-derived PP and fossil fuel-derived PP] <Percentage of peak intensity obtained by X-ray diffraction> Films (60 μm thick) of biomass-derived PP resin "Circulene Renew (registered trademark) C14HP640J (product number)" manufactured by LyondellBasell Industries, a Netherlands company, and films (60 μm thick) of fossil fuel-derived PP resin "Moprene (registered trademark) HP640J (product number)" manufactured by LyondellBasell Industries, a Netherlands company, were each cut into 2 cm x 2 cm test pieces (18 pieces each), and X-ray diffraction measurements were performed on each under the following conditions.
[0075] • X-ray diffraction (XRD) system: RIGAK Corporation "RINT(registered trademark) ULTIMA III (product name)" ·X-ray source: Cu-Kα Voltage: 40kV ·Current: 40mA • Scanning method: 2θ-θ method (parallel beam method) • Unit of measurement: cps • Scanning speed: 4° / min • Measurement range: 2θ = 10° to 30° • Sampling rate: 0.020° / min • Sample stage control mode: Rotation • Filter: Ni
[0076] The obtained peak pattern was smoothed at 19 points using analysis software normally equipped on the XRD instrument. Background processing was performed using the manual (spline) method within the measurement range of 2θ = 10° to 30°, and peak detection was performed using peak search processing. In the processed peak pattern, amorphous halo peaks exist in the range of 2θ ≈ 11° to 20°, but they were not detected by the peak search processing. Therefore, the intensity I0 of the amorphous halo peak at 2θ = 15° was determined by manual operation.
[0077] Furthermore, the intensity I1 of the peak tops where the three crystalline (111), (13-1), and (041) planes overlap, located outside the above range of 2θ = 21.2° to 21.6°, was determined. If the peak tops where the three planes overlap could not be detected by the peak search process, the peak tops located in 2θ = 21.2° to 21.6° were determined manually. The wide-angle crystallinity was then evaluated by calculating the ratio R (=I1 / I0) of each I1 to each I0. The results are shown in Tables 1 and 2 below.
[0078] [Table 1]
[0079] [Table 2]
[0080] As can be seen from Tables 1 and 2, the peak intensity ratio R of biomass-derived PP was between 0.5 and 0.7, which is almost equal to the peak intensity ratio R of fossil fuel-derived PP. This confirms that biomass-derived PP has a peak intensity ratio (broad-angle crystallinity) equivalent to that of fossil fuel-derived PP.
[0081] <Melting peak temperature and area by DSC> Samples were cut from the same biomass-derived and fossil fuel-derived PP films as described above using a clean hole punch (6 mm in diameter), and DSC was performed under the following conditions.
[0082] • Device: Input-compensated type "DSC8500 (model number)" manufactured by PerkinElmer Japan Co., Ltd. • Sample container: Open aluminum container • Sample mass: 10 mg • Purge gas: Nitrogen • Purge gas flow rate: 20 mL / min • Reference: Empty sample container
[0083] The measurement process involved a first measurement that reflected the thermal history of the sample, followed by a second measurement that eliminated the influence of the sample's thermal history through rapid cooling. Specifically, the first measurement was performed by holding the sample at 0°C for 5 minutes to confirm the stability of the heat, and then raising the temperature to 200°C at a rate of 10°C per minute.
[0084] Then, after holding the sample at 200°C for 10 minutes, it was rapidly cooled down to 0°C at a rate of over 60°C per minute, and held at 0°C for 10 minutes to eliminate the influence of the sample's thermal history. Once the stability of the sample's heat content was confirmed, the second measurement was performed by raising the temperature again to 200°C at a rate of 10°C per minute.
[0085] The measured DSC curves were weight-normalized, and the melting peak temperature of the PP phase was calculated in accordance with the Japanese Industrial Standard "JIS K 7121:2012," while the melting peak area (melting enthalpy) of the PP phase was calculated in accordance with the Japanese Industrial Standard "JIS K 7122:2012." In short, the extrapolation melting start temperature (Tim), extrapolation melting end temperature (Tem), melting peak temperature (Tpm), and melting peak area (ΔH) were determined by extending the baselines on the high-temperature and low-temperature sides of the DSC curve.
[0086] At this time, the validity of the peak interpretation was confirmed by referring to the differential curve (DDSC) of the DSC to check for the presence or absence of subpeaks and noise. In addition, the ratio B / F of each biomass-derived PP to each PP value derived from fossil fuels was also calculated. The results are shown in Table 3 below.
[0087] [Table 3]
[0088] As can be seen from Table 3, the melting peak temperature (Tpm) of biomass-derived PP was between 433K and 460K in both the first and second measurements, which is almost equal to the melting peak temperature (Tpm) of fossil fuel-derived PP, and the B / F ratio was between 97% and 103%. Furthermore, the melting peak area (ΔH) of biomass-derived PP was between 75J / g and 175J / g in both the first and second measurements, which is almost equal to the melting peak area (ΔH) of fossil fuel-derived PP, and the B / F ratio was between 60% and 140%. This confirms that biomass-derived PP has a melting peak temperature (Tpm) and melting peak area (ΔH) equivalent to that of fossil fuel-derived PP.
[0089] <Puncture strength> The same biomass-derived and fossil fuel-derived PP films as described above were cut into test pieces (5cm x 5cm) (10 pieces each), and their puncture strength was measured under the following conditions based on "7.5" of the Japanese Industrial Standard "JIS Z 1707:2019," and the average value was calculated. The results are shown in Tables 4 and 5 below.
[0090] • Device: "Tensilon (registered trademark) AD-7703 (product number)" manufactured by A&D Company, Limited. • Load cell: 100N • Load range: 10N (10%) • Test speed: 50 mm / min
[0091] [Table 4]
[0092] [Table 5]
[0093] As can be seen from Tables 4 and 5, the puncture strength of biomass-derived PP was between 5N and 7N, which is almost equal to the puncture strength of fossil fuel-derived PP. This confirms that biomass-derived PP has puncture strength characteristics equivalent to those of fossil fuel-derived PP.
[0094] <NVR measurement> Test bags were prepared by cutting and sealing PP films derived from biomass and fossil fuels, respectively, to form bags of 4.5 cm x 27 cm. The amount of NVR and the proportion of aliphatic branched hydrocarbons within the aliphatic hydrocarbons in the NVR were then determined by the NVR tests described below.
[0095] 《NVR amount》 The amount calculated based on the actual surface area of the inner surface of the test bag (1 cm 2Extraction was performed from each test bag by placing 0.03 mL of hexane (per bag) inside the bag, sealing it, and allowing it to stand for 20 minutes. Subsequently, the hexane in the test bag was transferred to a beaker of known mass, and the beaker was placed on a hot plate and heated to dryness (80°C for 3.5 hours). The mass of the beaker was then measured to calculate the NVR mass for each test bag. Furthermore, the ratio B / F (the ratio of the NVR mass of biomass-derived PP to the NVR mass of fossil fuel-derived PP) was calculated. The results are shown in Table 6 below.
[0096] [Table 6]
[0097] As can be seen from Table 6, the NVR amount of biomass-derived PP is 0.1 mg / cm³. 2 The results were as follows, and the NVR amount became substantially equal to that of fossil fuel-derived PP, resulting in a B / F ratio of 0.1 to 10. This confirmed that biomass-derived PP has an NVR amount equivalent to that of fossil fuel-derived PP.
[0098] 《Mass ratio of aliphatic branched hydrocarbons to total aliphatic hydrocarbons》 The mass of the NVR was calculated by adding hexane to a beaker containing the NVR to adjust the sample solution to a concentration of 100 μg / mL. Gas chromatography-mass spectrometry (GC / MS) was then performed under the following conditions to determine the mass ratios of aliphatic linear hydrocarbons and aliphatic branched hydrocarbons within the NVR. The results are shown in Table 7.
[0099] {Gas chromatography (GC) conditions} • Carrier gas: Helium • Sample injection volume: 2.0 μL • Sample injection method: pulsed splitless • Solvent waiting time: 6.0 minutes
[0100] {Mass spectrometry (MS) conditions} Interface temperature: 300℃ • Ionization method: EI Ionization voltage: 70eV Ion source temperature: 230℃ ·Quadrupole temperature: 150℃
[0101] [Table 7]
[0102] As can be seen from Table 7, the proportion of aliphatic branched hydrocarbons in the NVR of biomass-derived PP was 90% by mass or more, which is almost equal to the proportion of aliphatic branched hydrocarbons in the NVR of fossil fuel-derived PP. This confirms that biomass-derived PP has the same proportion as fossil fuel-derived PP.
[0103] [Evaluation of the transparent resin layer] <Preparation of standard specimens and test specimens> 《Reference body α》 The above fossil fuel-derived PP resin was formed into a 70 μm thick film using Ruda lamination to obtain a standard transparent resin layer α.
[0104] Test specimen A The above biomass-derived PP resin was formed into a 70 μm thick film using Ruda lamination to obtain a transparent resin layer specimen A.
[0105] Test specimen B A biomass-derived HDPE resin manufactured by LyondellBasell Industries of the Netherlands was formed into a 70 μm thick film using Luda Lamination to obtain test specimen B of a transparent resin layer.
[0106] Test specimen C A biomass-derived LDPE resin manufactured by LyondellBasell Industries, Ltd. of the Netherlands was formed into a 70 μm thick film using Luda Lamination to obtain a transparent resin layer specimen C.
[0107] Test specimen D The above biomass-derived HDPE resin and the above biomass-derived LDPE resin were mixed in a 50:50 ratio and formed into a film shape with a thickness of 70 μm by ruder lamination to obtain test specimen D of a transparent resin layer.
[0108] <Evaluation Method> Transparency and Haze For reference sample α and test samples A to D, the total light transmittance and haze at a wavelength of 555 nm were measured using a Shimadzu Corporation UV-3600 (integrating class) spectrophotometer, respectively, to evaluate transmittance and haze. The results are shown in Table 8 below.
[0109] In Table 8, transmittance is indicated by "◎" when the total light transmittance is 85% or higher, "○" when the total light transmittance is 80% or higher but less than 85%, and "×" when the total light transmittance is less than 80%. Similarly, haze is indicated by "◎" when it is less than 15%, "○" when it is 15% or higher but less than 25%, and "×" when it is 25% or higher.
[0110] <Evaluation Results> Table 8 below shows the evaluation results for transmittance and haze in the reference sample α and test samples A to D.
[0111] [Table 8]
[0112] As can be seen from Table 8, in test specimens B and D containing HDPE, the transmittance is "◎", but in test specimen B containing 100% HDPE, the haze is "×", and in test specimen D containing 50% HDPE, the haze is "○". In contrast, in reference sample α and test specimen A containing PP, and in test specimen C containing 100% LDPE, both the transmittance and haze are "◎".
[0113] [Evaluation of decorative materials] <Preparation of standard specimens and test specimens> 《Reference body I》 A pigment is mixed with the aforementioned fossil fuel-derived PP and formed into a film shape (60 μm thick) by extrusion molding. A pattern layer (5 μm thick) is then printed on one side of this colored resin layer. Next, a transparent urethane-based adhesive is applied to the pattern layer to create a transparent adhesive layer (5 μm thick). After laminating and bonding the transparent resin layer of the reference material α (fossil fuel-derived PP), a transparent acrylic urethane-based surface protective layer (10 μm thick) is applied.
[0114] Next, a decorative sheet was fabricated by applying corona discharge treatment to the other side of the colored resin layer, followed by the application of a polyester urethane resin base layer (1-2 μm thick). Then, a standard decorative component I was fabricated by attaching a medium-density fiberboard (MDF) substrate (5 μm thick) to the base layer using an adhesive.
[0115] Test specimen 1 Test specimen 1 of the decorative component was prepared by applying a colored resin layer, which was formed into a film shape (60 μm thick) by extrusion molding after mixing a pigment with the biomass-derived PP, and applying test specimen A (biomass-derived PP) as a transparent resin layer, in the same manner as standard specimen I.
[0116] Test specimen 2 Test specimen 2 of the decorative component was prepared by making it the same as reference specimen I, except that test specimen A (biomass-derived PP) was used as the transparent resin layer.
[0117] Test specimen 3 Test specimen 3 of the decorative component was prepared by making it the same as reference specimen I, except that test specimen B (100% biomass-derived HDPE) was used as the transparent resin layer.
[0118] Test specimen 4 Test specimen 4 of the decorative component was prepared by making it the same as reference specimen I, except that test specimen C (100% biomass-derived LDPE) was used as the transparent resin layer.
[0119] Test specimen 5 Test specimen 5 of the decorative component was prepared by making it the same as reference specimen I, except that test specimen D (50% biomass-derived HDPE + 50% LDPE) was used as the transparent resin layer.
[0120] <Evaluation Method> 《Surface hardness》 The surface hardness of standard specimen I and test specimens 1-5 was evaluated by performing a pencil hardness test in accordance with the Japanese Industrial Standard "JIS K5600-5-4". Specifically, a pencil with a load applied was placed on the surface protective layer of the decorative sheet of standard specimen I and test specimens 1-5, and the sheet was slid along while visually checking whether damage (gouging) occurred to the surface protective layer. The results are shown in Table 9 below.
[0121] In Table 9, "◎" indicates that surface damage occurred when using a pencil with a hardness of 2B or higher, "○" indicates that surface damage occurred when using a pencil with a hardness of 3B or 4B, and "×" indicates that surface damage occurred when using a pencil with a hardness of 5B or lower.
[0122] Bendability The bendability of standard specimen I and test specimens 1-5 was evaluated by visually inspecting the appearance of the bent top surface after applying a V-cut. Specifically, V-shaped grooves were first formed on standard specimen I and test specimens 1-5, from the exposed surface of the base material to the surface where the decorative sheet is attached to the base material, taking care not to damage the decorative sheet.
[0123] Next, the decorative members were folded at a 90-degree angle along the V-shaped grooves so that the decorative sheet was positioned on the outside, and it was visually checked whether or not whitening occurred at the top of the fold of the decorative sheet. The results are shown in Table 9 below.
[0124] In Table 9, "○" indicates that no whitening was observed, "△" indicates that slight whitening occurred but did not pose a practical problem, and "×" indicates that whitening occurred and made the product unusable.
[0125] 《Cutting workability》 Standard specimen I and test specimens 1-5 were cut using a circular saw and then cut to the base material using a hand router. The machinability was evaluated by checking for burrs on each decorative sheet. The results are shown in Table 9 below.
[0126] In Table 9, "○" indicates that no burrs were generated, and "×" indicates that burrs were generated and were difficult to correct manually.
[0127] <Evaluation Results> The evaluation results for standard specimen I and test specimens 1-5 are shown in Table 9 below.
[0128] [Table 9]
[0129] As can be seen from Table 9, in test specimens 4 and 5, where test specimens C and D (containing LDPE) were applied to the transparent resin layer, all evaluation items resulted in a "×". In addition, in test specimen 3, where test specimen B (100% HDPE) was applied to the transparent resin layer, the surface hardness was "○", but the bending and cutting processes were "×".
[0130] In contrast, test specimen 2, in which test specimen A (biomass-derived PP) was applied to the transparent resin layer, and test specimen 1, in which biomass-derived PP was also applied to the colored resin layer, received a "◎" in all evaluation items, and achieved physical properties equivalent to those of standard specimen I, in which standard specimen α (fossil fuel-derived PP) was applied to the transparent resin layer.
[0131] From the above, it has been confirmed that the decorative sheet and decorative component according to the present invention can have the same functionality as fossil fuel-derived PP, even though they use biomass-derived resin, and that their physical properties can be improved compared to when biomass-derived HDPE or LDPE are used. [Industrial applicability]
[0132] The decorative sheets and decorative components according to the present invention, while using biomass-derived resin, can have the same functionality as fossil fuel-derived polypropylene, and their physical properties can be improved compared to when biomass-derived high-density polyethylene or low-density polyethylene is used. Therefore, they can be used very effectively in various industries, including the construction industry. [Explanation of symbols]
[0133] 10 decorative sheets 10a Embossed 11 Colored resin layer 12 Image Layers 13 Transparent adhesive layer 14 Transparent resin layer 15 Surface protection layer 16 Base layer 100 Decorative components 101 Base material
Claims
1. A colored resin layer made of a thermoplastic resin having light-shielding properties, A patterned layer having a pattern, A transparent resin layer made of a thermoplastic resin that has light transmittance, A decorative sheet laminated in this order, At least one of the colored resin layer and the transparent resin layer contains biomass-derived polypropylene polymerized from a monomer containing biomass-derived propylene, In the X-ray diffraction pattern of the biomass-derived polypropylene measured using the 2θ-θ method with CuKα rays, the ratio R (=I1 / I0) of the overlapping peak intensities I1 of the crystalline (111), (13-1), and (041) planes to the amorphous-derived peak intensity I0 is 0.5 or more and 0.7 or less. A decorative sheet characterized by the following features.
2. A colored resin layer made of a thermoplastic resin having light-shielding properties, A patterned layer having a pattern, A transparent resin layer made of a thermoplastic resin that has light transmittance, A decorative sheet laminated in this order, At least one of the colored resin layer and the transparent resin layer contains biomass-derived polypropylene polymerized from a monomer containing biomass-derived propylene, The biomass-derived polypropylene has a melting peak temperature of the polypropylene phase in differential scanning calorimetry that is between 433K and 460K. A decorative sheet characterized by the following features.
3. A colored resin layer made of a thermoplastic resin having light-shielding properties, A patterned layer having a pattern, A transparent resin layer made of a thermoplastic resin that has light transmittance, A decorative sheet laminated in this order, At least one of the colored resin layer and the transparent resin layer contains biomass-derived polypropylene polymerized from a monomer containing biomass-derived propylene, The biomass-derived polypropylene is characterized by a melting peak temperature of the polypropylene phase in differential scanning calorimetry that is within the range of 97% to 103% of the melting peak temperature of the polypropylene phase of fossil fuel-derived polypropylene. A decorative sheet characterized by the following features.
4. A colored resin layer made of a thermoplastic resin having light-shielding properties, A patterned layer having a pattern, A transparent resin layer made of a thermoplastic resin that has light transmittance, A decorative sheet laminated in this order, At least one of the colored resin layer and the transparent resin layer contains biomass-derived polypropylene polymerized from a monomer containing biomass-derived propylene, The biomass-derived polypropylene has a melting peak area of the polypropylene phase in differential scanning calorimetry that is between 75 J / g and 175 J / g. A decorative sheet characterized by the following features.
5. A colored resin layer made of a thermoplastic resin having light-shielding properties, A patterned layer having a pattern, A transparent resin layer made of a thermoplastic resin that has light transmittance, A decorative sheet laminated in this order, At least one of the colored resin layer and the transparent resin layer contains biomass-derived polypropylene polymerized from a monomer containing biomass-derived propylene, The biomass-derived polypropylene exhibits a melting peak area of the polypropylene phase in differential scanning calorimetry that is 60% to 140% of the melting peak area of the polypropylene phase in fossil fuel-derived polypropylene. A decorative sheet characterized by the following features.
6. A colored resin layer made of a thermoplastic resin having light-shielding properties, A patterned layer having a pattern, A transparent resin layer made of a thermoplastic resin that has light transmittance, A decorative sheet laminated in this order, At least one of the colored resin layer and the transparent resin layer contains biomass-derived polypropylene polymerized from a monomer containing biomass-derived propylene, The aforementioned biomass-derived polypropylene has a puncture strength of 5N to 7N when its thickness is between 50 μm and 70 μm. A decorative sheet characterized by the following features.
7. A colored resin layer made of a thermoplastic resin having light-shielding properties, A patterned layer having a pattern, A transparent resin layer made of a thermoplastic resin that has light transmittance, A decorative sheet laminated in this order, At least one of the colored resin layer and the transparent resin layer contains biomass-derived polypropylene polymerized from a monomer containing biomass-derived propylene, The aforementioned biomass-derived polypropylene has a non-volatile residue content of 0.1 mg / cm³. 2 The following applies: A decorative sheet characterized by the following features.
8. A colored resin layer made of a thermoplastic resin having light-shielding properties, A patterned layer having a pattern, A transparent resin layer made of a thermoplastic resin that has light transmittance, A decorative sheet laminated in this order, At least one of the colored resin layer and the transparent resin layer contains biomass-derived polypropylene polymerized from a monomer containing biomass-derived propylene, The biomass-derived polypropylene is characterized by a non-volatile residue mass that is 0.1 to 10 times the mass of the non-volatile residue of fossil fuel-derived polypropylene. A decorative sheet characterized by the following features.
9. A colored resin layer made of a thermoplastic resin having light-shielding properties, A patterned layer having a pattern, A transparent resin layer made of a thermoplastic resin that has light transmittance, A decorative sheet laminated in this order, At least one of the colored resin layer and the transparent resin layer contains biomass-derived polypropylene polymerized from a monomer containing biomass-derived propylene, The aforementioned biomass-derived polypropylene has a non-volatile residue in which the proportion of aliphatic branched hydrocarbons is 90% by mass or more. A decorative sheet characterized by the following features.
10. The colored resin layer has a thickness of 30 μm or more and 100 μm or less. A decorative sheet according to any one of claims 1 to 9.
11. The transparent resin layer has a thickness of 10 μm or more and 150 μm or less. A decorative sheet according to any one of claims 1 to 9.
12. The transparent resin layer is provided with a surface protective layer that is light-transmitting and protects the surface. A decorative sheet according to any one of claims 1 to 9.
13. The base layer is laminated on the side of the colored resin layer opposite to the side where the pattern layer is laminated. A decorative sheet according to any one of claims 1 to 9.
14. The transparent adhesive layer is provided between the pattern layer and the transparent resin layer and has light-transmitting and adhesive properties. A decorative sheet according to any one of claims 1 to 9.
15. Substrate and A decorative sheet according to any one of claims 1 to 9 laminated on the substrate, A decorative component characterized by having the following features.
Citation Information
Patent Citations
Decorative sheet and decorative material
JP2022151687A