JP6727769B2 - Interior sheet for bathroom - Google Patents
Interior sheet for bathroom Download PDFInfo
- Publication number
- JP6727769B2 JP6727769B2 JP2015151914A JP2015151914A JP6727769B2 JP 6727769 B2 JP6727769 B2 JP 6727769B2 JP 2015151914 A JP2015151914 A JP 2015151914A JP 2015151914 A JP2015151914 A JP 2015151914A JP 6727769 B2 JP6727769 B2 JP 6727769B2
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- vinyl chloride
- bathroom
- heat stabilizer
- surface layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229920005989 resin Polymers 0.000 claims description 82
- 239000011347 resin Substances 0.000 claims description 82
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 claims description 72
- 239000002344 surface layer Substances 0.000 claims description 71
- 239000012760 heat stabilizer Substances 0.000 claims description 69
- 239000010410 layer Substances 0.000 claims description 62
- 239000004014 plasticizer Substances 0.000 claims description 39
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 33
- 150000002902 organometallic compounds Chemical class 0.000 claims description 13
- 239000004094 surface-active agent Substances 0.000 claims description 13
- 238000013461 design Methods 0.000 claims description 11
- 229940049920 malate Drugs 0.000 claims description 9
- BJEPYKJPYRNKOW-UHFFFAOYSA-N malic acid Chemical compound OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 claims description 9
- 239000002253 acid Substances 0.000 claims description 6
- 125000003396 thiol group Chemical class [H]S* 0.000 claims 1
- 230000002087 whitening effect Effects 0.000 description 35
- 229920001577 copolymer Polymers 0.000 description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 17
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 16
- 239000000463 material Substances 0.000 description 15
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 14
- 230000000694 effects Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 10
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- 238000006116 polymerization reaction Methods 0.000 description 9
- 239000003381 stabilizer Substances 0.000 description 9
- 229910000019 calcium carbonate Inorganic materials 0.000 description 8
- -1 diphenylene dicarboxylic acid Chemical compound 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
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- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 6
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- 239000003086 colorant Substances 0.000 description 6
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- 229920000728 polyester Polymers 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
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- 238000012360 testing method Methods 0.000 description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 5
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 5
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 5
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- 238000010558 suspension polymerization method Methods 0.000 description 5
- 229930185605 Bisphenol Natural products 0.000 description 4
- 239000004594 Masterbatch (MB) Substances 0.000 description 4
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
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- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 4
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- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 239000001361 adipic acid Substances 0.000 description 3
- 235000011037 adipic acid Nutrition 0.000 description 3
- ARCGXLSVLAOJQL-UHFFFAOYSA-N anhydrous trimellitic acid Natural products OC(=O)C1=CC=C(C(O)=O)C(C(O)=O)=C1 ARCGXLSVLAOJQL-UHFFFAOYSA-N 0.000 description 3
- SHLNMHIRQGRGOL-UHFFFAOYSA-N barium zinc Chemical compound [Zn].[Ba] SHLNMHIRQGRGOL-UHFFFAOYSA-N 0.000 description 3
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- HGQSXVKHVMGQRG-UHFFFAOYSA-N dioctyltin Chemical compound CCCCCCCC[Sn]CCCCCCCC HGQSXVKHVMGQRG-UHFFFAOYSA-N 0.000 description 3
- POULHZVOKOAJMA-UHFFFAOYSA-M dodecanoate Chemical compound CCCCCCCCCCCC([O-])=O POULHZVOKOAJMA-UHFFFAOYSA-M 0.000 description 3
- 229940070765 laurate Drugs 0.000 description 3
- 239000004745 nonwoven fabric Substances 0.000 description 3
- 235000012424 soybean oil Nutrition 0.000 description 3
- 239000003549 soybean oil Substances 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 239000002759 woven fabric Substances 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- PUPZLCDOIYMWBV-UHFFFAOYSA-N (+/-)-1,3-Butanediol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 description 2
- IRIAEMUUDSWZOX-UHFFFAOYSA-L 2,2-dibutyl-1,3,2-oxathiastanninan-6-one Chemical compound CCCC[Sn]1(CCCC)OC(=O)CCS1 IRIAEMUUDSWZOX-UHFFFAOYSA-L 0.000 description 2
- GGSRTHRSSCWGGK-UHFFFAOYSA-L 2,2-dibutyl-5-hydroxy-1,3,2-dioxastannepane-4,7-dione Chemical compound CCCC[Sn]1(CCCC)OC(=O)CC(O)C(=O)O1 GGSRTHRSSCWGGK-UHFFFAOYSA-L 0.000 description 2
- VPWNQTHUCYMVMZ-UHFFFAOYSA-N 4,4'-sulfonyldiphenol Chemical class C1=CC(O)=CC=C1S(=O)(=O)C1=CC=C(O)C=C1 VPWNQTHUCYMVMZ-UHFFFAOYSA-N 0.000 description 2
- WWXUGNUFCNYMFK-UHFFFAOYSA-N Acetyl citrate Chemical compound CC(=O)OC(=O)CC(O)(C(O)=O)CC(O)=O WWXUGNUFCNYMFK-UHFFFAOYSA-N 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- IRIAEXORFWYRCZ-UHFFFAOYSA-N Butylbenzyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCC1=CC=CC=C1 IRIAEXORFWYRCZ-UHFFFAOYSA-N 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- NIQCNGHVCWTJSM-UHFFFAOYSA-N Dimethyl phthalate Chemical compound COC(=O)C1=CC=CC=C1C(=O)OC NIQCNGHVCWTJSM-UHFFFAOYSA-N 0.000 description 2
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 239000006057 Non-nutritive feed additive Substances 0.000 description 2
- 239000002202 Polyethylene glycol Substances 0.000 description 2
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-L adipate(2-) Chemical compound [O-]C(=O)CCCCC([O-])=O WNLRTRBMVRJNCN-UHFFFAOYSA-L 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- 150000001408 amides Chemical class 0.000 description 2
- 239000003429 antifungal agent Substances 0.000 description 2
- 229940121375 antifungal agent Drugs 0.000 description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- QHIWVLPBUQWDMQ-UHFFFAOYSA-N butyl prop-2-enoate;methyl 2-methylprop-2-enoate;prop-2-enoic acid Chemical compound OC(=O)C=C.COC(=O)C(C)=C.CCCCOC(=O)C=C QHIWVLPBUQWDMQ-UHFFFAOYSA-N 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
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- 238000007334 copolymerization reaction Methods 0.000 description 2
- 125000004386 diacrylate group Chemical group 0.000 description 2
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- FLKPEMZONWLCSK-UHFFFAOYSA-N diethyl phthalate Chemical compound CCOC(=O)C1=CC=CC=C1C(=O)OCC FLKPEMZONWLCSK-UHFFFAOYSA-N 0.000 description 2
- JQCXWCOOWVGKMT-UHFFFAOYSA-N diheptyl phthalate Chemical compound CCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCC JQCXWCOOWVGKMT-UHFFFAOYSA-N 0.000 description 2
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- 150000002148 esters Chemical class 0.000 description 2
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- 229930195729 fatty acid Natural products 0.000 description 2
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- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 210000003127 knee Anatomy 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- BDJRBEYXGGNYIS-UHFFFAOYSA-N nonanedioic acid Chemical compound OC(=O)CCCCCCCC(O)=O BDJRBEYXGGNYIS-UHFFFAOYSA-N 0.000 description 2
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
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- 229910052708 sodium Inorganic materials 0.000 description 2
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- PUYRISKXBBQECH-UHFFFAOYSA-N 2-ethylhexyl 8-(3-octyloxiran-2-yl)octanoate Chemical compound CCCCCCCCC1OC1CCCCCCCC(=O)OCC(CC)CCCC PUYRISKXBBQECH-UHFFFAOYSA-N 0.000 description 1
- ALKCLFLTXBBMMP-UHFFFAOYSA-N 3,7-dimethylocta-1,6-dien-3-yl hexanoate Chemical compound CCCCCC(=O)OC(C)(C=C)CCC=C(C)C ALKCLFLTXBBMMP-UHFFFAOYSA-N 0.000 description 1
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- YJOMWQQKPKLUBO-UHFFFAOYSA-L lead(2+);phthalate Chemical compound [Pb+2].[O-]C(=O)C1=CC=CC=C1C([O-])=O YJOMWQQKPKLUBO-UHFFFAOYSA-L 0.000 description 1
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- 229920005671 poly(vinyl chloride-propylene) Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001610 polycaprolactone Polymers 0.000 description 1
- 239000004632 polycaprolactone Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000006077 pvc stabilizer Substances 0.000 description 1
- 229920005604 random copolymer Polymers 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011342 resin composition Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 150000003329 sebacic acid derivatives Chemical class 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- RYYKJJJTJZKILX-UHFFFAOYSA-M sodium octadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCCCC([O-])=O RYYKJJJTJZKILX-UHFFFAOYSA-M 0.000 description 1
- 229940045870 sodium palmitate Drugs 0.000 description 1
- 229940080350 sodium stearate Drugs 0.000 description 1
- GGXKEBACDBNFAF-UHFFFAOYSA-M sodium;hexadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCC([O-])=O GGXKEBACDBNFAF-UHFFFAOYSA-M 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- RJIFVNWOLLIBJV-UHFFFAOYSA-N tributyl benzene-1,2,4-tricarboxylate Chemical compound CCCCOC(=O)C1=CC=C(C(=O)OCCCC)C(C(=O)OCCCC)=C1 RJIFVNWOLLIBJV-UHFFFAOYSA-N 0.000 description 1
- WCLDITPGPXSPGV-UHFFFAOYSA-N tricamba Chemical compound COC1=C(Cl)C=C(Cl)C(Cl)=C1C(O)=O WCLDITPGPXSPGV-UHFFFAOYSA-N 0.000 description 1
- 125000005591 trimellitate group Chemical group 0.000 description 1
- JNXDCMUUZNIWPQ-UHFFFAOYSA-N trioctyl benzene-1,2,4-tricarboxylate Chemical compound CCCCCCCCOC(=O)C1=CC=C(C(=O)OCCCCCCCC)C(C(=O)OCCCCCCCC)=C1 JNXDCMUUZNIWPQ-UHFFFAOYSA-N 0.000 description 1
- QRCJOCOSPZMDJY-UHFFFAOYSA-N valnoctamide Chemical compound CCC(C)C(CC)C(N)=O QRCJOCOSPZMDJY-UHFFFAOYSA-N 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Sink And Installation For Waste Water (AREA)
- Bathtubs, Showers, And Their Attachments (AREA)
- Floor Finish (AREA)
- Laminated Bodies (AREA)
Description
本発明は、家庭、公衆浴場等の浴室における床面又は壁面として用いられる内装シートに関する。 The present invention relates to an interior sheet used as a floor surface or a wall surface in a bathroom such as a home or a public bath.
浴室の床材又は壁材としては、一般に磁器タイル、ＦＲＰ、硬質ゴム等の硬質材料が用いられている。また、浴室の床材としては、防滑性を付与し、排水性を高めるために、その表面に小突起又は凹凸を有する構造が採用される。ところが、硬質材料からなる床材の表面に小突起又は凹凸を有する構造を採用した場合、入浴者の素肌が硬い凹凸に接触し、入浴者が痛みを感じることがある。例えば、入浴者が浴室の床上に膝を付くと、体重が集中するため、膝に強い痛みを感じる場合が多い。 Hard materials such as porcelain tiles, FRP, and hard rubber are generally used as floor materials or wall materials for bathrooms. Further, as a floor material for a bathroom, a structure having small projections or irregularities on its surface is adopted in order to impart slip resistance and enhance drainage. However, when a structure having small projections or irregularities on the surface of a flooring made of a hard material is adopted, the bare skin of the bather may come into contact with the hard irregularities, and the bather may feel pain. For example, when a bather puts a knee on the floor of the bathroom, his/her weight is concentrated, and thus the knee often feels a strong pain.
このような痛みの軽減等を目的として、所定の凹凸を有する床シートが提案されている（特許文献１）。特に、塩化ビニル系樹脂製の床シートは、製造容易であり、しかも適度な柔軟性を有することから、痛み軽減効果に優れており、浴室用床シートとして好適である。 A floor sheet having predetermined irregularities has been proposed for the purpose of reducing such pain (Patent Document 1). In particular, a vinyl chloride resin floor sheet is easy to manufacture and has appropriate flexibility, so that it has an excellent pain-relieving effect and is suitable as a bathroom floor sheet.
しかし、塩化ビニル系樹脂製の床シートを浴室に用いると、経時的に床シートの表面が白化することがある。また、塩化ビニル樹脂製のシートを浴室の壁又は天井に施工した場合においても、同様にその表面が白化することがある。このような現象が起こると、浴室床の外観が悪くなるので、その改善が求められる。 However, when a vinyl chloride resin floor sheet is used in a bathroom, the surface of the floor sheet may become white over time. Also, when a vinyl chloride resin sheet is applied to a wall or ceiling of a bathroom, the surface thereof may be whitened similarly. When such a phenomenon occurs, the appearance of the bathroom floor deteriorates, so improvement is required.
これに対し、本願出願人は、白化を抑制することを目的として、シート本体と前記シート本体の表面に設けられた表層とを有し、 前記表層が塩化ビニル系樹脂とマスターバッチ化した着色剤とを含み、且つ、実質的に炭酸カルシウムを含まない、浴室用内装シートを提案している（特許文献２）。 On the other hand, the present applicant has a sheet body and a surface layer provided on the surface of the sheet body for the purpose of suppressing whitening, and the surface layer is a vinyl chloride resin and a masterbatch colorant. An interior sheet for a bathroom that contains and is substantially free of calcium carbonate is proposed (Patent Document 2).
浴室における床面、天井面、側壁面等の内装シートの表面に水が断続的に付着すると、樹脂材料で形成された表層が白くなる所謂「白化現象」という現象が発生する場合がある。本明細書中においては、「白化現象」を略して「白化」と称することとする。本発明者の研究によれば、この現象が生じた樹脂材料の表層を観察すると、表層が白濁しているように見えることが判った。この現象は、特に、表層が透明であり、かつ、下地となる意匠層の色濃度が高い場合には白濁がより顕著に目立つ。このような現象が生じる原因の一つは、樹脂層のミクロな空孔に入り込んだり、樹脂の分子構造中に侵入した水分子によって光が散乱又は乱反射することによってシート表面が白く見えるためと考えられる。 When water intermittently adheres to the surface of the interior sheet such as the floor surface, ceiling surface, and side wall surface in the bathroom, a phenomenon called "whitening phenomenon" in which the surface layer formed of the resin material becomes white may occur. In the present specification, the "whitening phenomenon" is abbreviated as "whitening". According to the research by the present inventor, it was found that when the surface layer of the resin material in which this phenomenon occurred was observed, the surface layer appeared to be cloudy. This phenomenon is particularly noticeable when the surface layer is transparent and the underlying design layer has a high color density. One of the causes of such a phenomenon is thought to be that the sheet surface looks white due to light scattering or irregular reflection by water molecules penetrating into the microscopic pores of the resin layer or entering the resin molecular structure. To be
前記の浴室用内装シートによれば、特にマスターバッチ化した着色剤による隠蔽効果により白化を効果的に抑制することが可能となる。 According to the above-mentioned bathroom interior sheet, whitening can be effectively suppressed due to the masking effect of the masterbatch colorant.
これに対し、上記のような着色剤に頼ることなく、白化を抑制することができれば、塩化ビニル系樹脂が有する柔軟性、弾力性等の性能をより効果的に維持することも可能となる。前記の浴室用内装シートでは、白化の抑制がマスターバッチ化した着色剤の配合に依存するところ、浴室用内装シートの色調、濃度等の自由度が減り、デザインに制約が生じる場合がある。また、塩化ビニル系樹脂に対して着色剤を多く配合した方が効果的であるので、着色剤の配合量を多くする場合がある。その場合には、塩化ビニル系樹脂の含有量が相対的に減少する結果、塩化ビニル系樹脂の性能を十分に引き出せなくなる等の問題が生じるおそれがある。 On the other hand, if the whitening can be suppressed without relying on the colorant as described above, it is possible to more effectively maintain the performance such as flexibility and elasticity of the vinyl chloride resin. In the above-mentioned bathroom interior sheet, the suppression of whitening depends on the blending of the masterbatch colorant, but the degree of freedom of the color tone, density, etc. of the bathroom interior sheet may be reduced, and the design may be restricted. Further, since it is more effective to add a large amount of a coloring agent to the vinyl chloride resin, the amount of the coloring agent may be increased. In that case, as a result of the relative decrease in the content of the vinyl chloride-based resin, there is a possibility that the performance of the vinyl chloride-based resin may not be sufficiently brought out.
従って、本発明の主な目的は、塩化ビニル系樹脂が有する性能を活かしつつ、白化が効果的に抑制された浴室用内装シートを提供することにある。 Therefore, a main object of the present invention is to provide an interior sheet for a bathroom in which whitening is effectively suppressed while utilizing the performance of the vinyl chloride resin.
本発明者は、従来技術の問題点に鑑みて鋭意研究を重ねた結果、特定の組成からなる表層を有するシートを浴室用の内装シートとして採用することにより上記目的を達成できることを見出し、本発明を完成するに至った。 The present inventors have conducted intensive studies in view of the problems of the prior art, and as a result, have found that the above object can be achieved by adopting a sheet having a surface layer of a specific composition as an interior sheet for a bathroom, and the present invention Has been completed.
すなわち、本発明は、下記の浴室用内装シートに係る。
１． シート本体及びそのシート本体の表面に設けられた表層を含むシートであって、
（１）前記表層が塩化ビニル系樹脂、可塑剤及び熱安定剤を含み、
（２）前記熱安定剤がスズ系熱安定剤を含み、
（３）スズ系熱安定剤の含有量が、塩化ビニル系樹脂１００質量部に対して０．１〜１．９質量部であり、
（４）前記表層中における界面活性剤の含有量が０質量％である、
ことを特徴とする浴室用内装シート。
２． スズ系熱安定剤が粉状である、前記項１に記載の浴室用内装シート。
３． スズ系熱安定剤がメルカプト系スズ含有金属有機化合物、マレート系スズ含有金属有機化合物及びラウレート系スズ含有金属有機化合物の少なくとも１種を含む、前記項１又は２に記載の浴室用内装シート。
４． 前記項１〜３のいずれかに記載の浴室用内装シートが、当該表層が最表面となるように浴室の床面に設置された浴室床構造。
That is, the present invention relates to the following bathroom interior sheet.
1. A sheet including a sheet body and a surface layer provided on the surface of the sheet body,
(1) The surface layer contains a vinyl chloride resin, a plasticizer and a heat stabilizer,
(2) the heat stabilizer saw contains a tin-based heat stabilizers,
(3) The content of the tin-based heat stabilizer is 0.1 to 1.9 parts by mass with respect to 100 parts by mass of the vinyl chloride resin.
(4) The content of the surfactant in the surface layer is 0% by mass,
Interior sheet for bathroom, which is characterized by
2. Item 2. The interior sheet for a bathroom according to Item 1 , wherein the tin-based heat stabilizer is powdery .
3. Item 3. The bathroom interior sheet according to Item 1 or 2, wherein the tin-based heat stabilizer contains at least one of a mercapto-based tin-containing metal organic compound, a malate-based tin-containing metal organic compound, and a laurate-based tin-containing metal organic compound.
4. A bathroom floor structure in which the bathroom interior sheet according to any one of Items 1 to 3 is installed on the floor of the bathroom such that the surface layer is the outermost surface.
本発明によれば、塩化ビニル系樹脂が有する性能を効果的に活かしつつ、白化が抑制された浴室用内装シートを提供することができる。 According to the present invention, it is possible to provide an interior sheet for a bathroom in which whitening is suppressed while effectively utilizing the performance of the vinyl chloride resin.
本発明の浴室用内装シートは、例えば床面、天井面、側壁面等のように、浴室において水が断続的に付着するような面に好適に使用することができる。この場合、従来の内装シートでは水との接触により白化が起きやすく、これにより外観の劣化が生じるのに対し、本発明の浴室用内装シートでは白化を効果的に抑制でき、外観が劣化し難い浴室を構築できる。 INDUSTRIAL APPLICABILITY The bathroom interior sheet of the present invention can be suitably used for surfaces to which water intermittently adheres in a bathroom, such as floor surfaces, ceiling surfaces, and side wall surfaces. In this case, in the conventional interior sheet, whitening is likely to occur due to contact with water, which causes deterioration of appearance, whereas in the bathroom interior sheet of the present invention, whitening can be effectively suppressed and appearance is less likely to deteriorate. You can build a bathroom.
また、白化を抑制するための熱安定剤としてスズ系熱安定剤を用いるので、熱安定剤の添加量を比較的少量に抑えることができる結果、塩化ビニル系樹脂が有する柔軟性、弾力性等の特性をより効果的に引き出すことができる。特に、スズ系熱安定剤として、ジブチルスズ−３−メルカプトプロピオン酸塩等を用いる場合には、塩化ビニル系樹脂１００質量部に対して２質量部未満という少量で所望の効果を確実に得ることができる。 In addition, since a tin-based heat stabilizer is used as a heat stabilizer for suppressing whitening, the addition amount of the heat stabilizer can be suppressed to a relatively small amount, resulting in flexibility, elasticity, etc. of the vinyl chloride resin. The characteristics of can be brought out more effectively. In particular, when dibutyltin-3-mercaptopropionate or the like is used as the tin-based heat stabilizer, the desired effect can be reliably obtained with a small amount of less than 2 parts by mass with respect to 100 parts by mass of the vinyl chloride resin. it can.
このような特徴をもつ本発明の浴室用内装シートは、一般家庭の浴室のほか、宿泊施設（ホテル、旅館等）、娯楽施設（公衆浴場、シャワールーム等）、病院、介護施設等の浴室又は大浴場の床面、天井面又は側壁面を構成する部材として用いることができる。特に、頻繁に水と接触する床面においてその床材として好適に用いることができる。 The interior sheet for a bathroom of the present invention having such characteristics is used in a bathroom of an ordinary household, an accommodation facility (hotel, inn, etc.), an entertainment facility (public bath, shower room, etc.), a hospital, a nursing facility, etc. It can be used as a member constituting a floor surface, a ceiling surface or a side wall surface of a large public bath. In particular, it can be suitably used as a floor material for a floor surface that frequently comes into contact with water.
１．浴室用内装シート（本発明シート）
本発明シートは、シート本体及びそのシート本体の表面に設けられた表層を含むシートであって、
（１）前記表層が塩化ビニル系樹脂、可塑剤及び熱安定剤を含み、
（２）前記熱安定剤がスズ系熱安定剤を含む、
ことを特徴とする。
1. Interior sheet for bathroom (invention sheet)
The sheet of the present invention is a sheet including a sheet body and a surface layer provided on the surface of the sheet body,
(1) The surface layer contains a vinyl chloride resin, a plasticizer and a heat stabilizer,
(2) The heat stabilizer includes a tin-based heat stabilizer,
It is characterized by
本発明シートは、浴室用の内装シート、すなわち内面を構成するためのシートとして用いられるものであり、好ましくは浴室の床面、浴室の側壁面及び浴室の天井面の少なくとも１つの浴室の内面に使用される。この場合、本発明シートは、各面の一部に用いても良いし、全面に用いることもできる。 INDUSTRIAL APPLICABILITY The sheet of the present invention is used as an interior sheet for a bathroom, that is, a sheet for forming an inner surface, and is preferably provided on at least one inner surface of the bathroom such as a floor surface of the bathroom, a side wall surface of the bathroom, and a ceiling surface of the bathroom. used. In this case, the sheet of the present invention may be used on a part of each surface or on the entire surface.
図１には、本発明シートの一例として浴室用床シートの基本層構成を示す。浴室用床シート１は、シート本体２及びそのシート本体２の表面に設けられた表層３を含む。シート本体２が下層となり、浴室の床面に設置され、表層が最表面として露出した状態となる。本発明シートでは、表層３が最表面となるよう、すなわち露出するように設計されている限りは、必要に応じて他の層がａ）シート本体と表層との層間、ｂ）シート本体の下層又はｃ）表層の上層に積層されていても良い。 FIG. 1 shows a basic layer structure of a bathroom floor sheet as an example of the sheet of the present invention. The bathroom floor sheet 1 includes a seat body 2 and a surface layer 3 provided on the surface of the seat body 2. The seat body 2 is the lower layer, is installed on the floor surface of the bathroom, and the surface layer is exposed as the outermost surface. In the sheet of the present invention, as long as the surface layer 3 is designed to be the outermost surface, that is, exposed, other layers are a) between the sheet main body and the surface layer, and b) a lower layer of the sheet main body, if necessary. Alternatively, it may be laminated on the upper layer of the c) surface layer.
本発明シートは、その平面形状が床タイルのように矩形状又は多角形状に形成されていても良いし、長尺状シートに形成されていても良い。長尺状に形成された内装シートは、通常、ロールに巻かれて保管・運搬に供される。長尺状の内装シートの形状は、特に限定されず、例えば、幅８００〜４０００ｍｍで長さ２〜３００ｍの細長長方形等が挙げられる。 The planar shape of the sheet of the present invention may be rectangular or polygonal like a floor tile, or may be a long sheet. The long interior sheet is usually wound on a roll and provided for storage and transportation. The shape of the long interior sheet is not particularly limited, and examples thereof include a slender rectangle having a width of 800 to 4000 mm and a length of 2 to 300 m.
以下においては、本発明シートを構成するシート本体、表層等についてそれぞれ詳細に説明する。 In the following, the sheet body, the surface layer and the like constituting the sheet of the present invention will be described in detail.
シート本体
シート本体は、表層を支持する機能を有するものであれば特に材質は限定されないが、通常は合成樹脂を用いることができる。合成樹脂としては、例えば塩化ビニル系樹脂、ポリオレフィン系樹脂、酢酸ビニル系樹脂、アクリル系樹脂、アミド系樹脂、ポリエステル系樹脂等のほか、オレフィンエラストマー、スチレンエラストマー等の各種エラストマーが挙げられる。
Sheet Body The sheet body is not particularly limited in material as long as it has a function of supporting the surface layer, but a synthetic resin can be usually used. Examples of synthetic resins include vinyl chloride resins, polyolefin resins, vinyl acetate resins, acrylic resins, amide resins, polyester resins, and various elastomers such as olefin elastomers and styrene elastomers.
これらの中でも、優れた柔軟性を有するとともに表層との密着性に優れるという点において、主たる樹脂成分として塩化ビニル系樹脂を用いることが好ましい。塩化ビニル系樹脂においては、柔軟性に優れることにより、柔軟な浴室面を構成できるほか、ロールに巻き取ってシート本体を簡易に保管・運搬できる上、施工時に浴室内に容易に搬入できるというメリットもある。塩化ビニル系樹脂としては、後記の表層において説明されているような塩化ビニル系樹脂と同様のものを使用することができる。この場合、塩化ビニル系樹脂は、表層で使用されているものと互いに同一のもの又は異なるものであっても良い。 Among these, it is preferable to use a vinyl chloride resin as the main resin component because it has excellent flexibility and excellent adhesion to the surface layer. Due to its excellent flexibility, vinyl chloride resin makes it possible to form a flexible bathroom surface, and it is possible to easily store and transport the sheet body by rolling it up on a roll, and to easily bring it into the bathroom during construction. There is also. As the vinyl chloride resin, the same vinyl chloride resin as described in the surface layer described later can be used. In this case, the vinyl chloride resin may be the same as or different from the one used in the surface layer.
なお、本明細書において特定の層における「主たる樹脂成分」とは、当該層中に含まれる樹脂成分の合計量中６０質量％以上、好ましくは８０重量％以上、より好ましくは９０重量％以上を占める樹脂成分を意味する。 In the present specification, the "main resin component" in a specific layer means 60% by mass or more, preferably 80% by weight or more, more preferably 90% by weight or more in the total amount of the resin components contained in the layer. Means the resin component occupying.
シート本体は、単層構造であっても良いし、複数の層が積層されてなる多層構造であっても良い。多層構造の場合は、２層又はそれ以上の層構成を採用することができる。また、各層は、非発泡体又は発泡体のいずれであっても良い。浴室におけるヒートショックの低減のため及び温感を高めるために断熱性を有していることが好ましいことから、発泡層を含むことが望ましい。 The sheet body may have a single-layer structure or a multi-layer structure in which a plurality of layers are laminated. In the case of a multi-layer structure, a layer structure of two layers or more can be adopted. Further, each layer may be either non-foamed or foamed. In order to reduce heat shock in the bathroom and to have a warm feeling, it is preferable to have a heat insulating property, so that it is desirable to include a foam layer.
シート本体の厚みは、特に限定されないが、通常は１．８〜５．０ｍｍ程度の範囲とすれば良く、特に２．０〜４．０ｍｍとすることが望ましい。シート本体の厚みは、エンボス加工が施されている場合等のように厚みが不均一な場合、その最大層厚みを指す。 Although the thickness of the sheet body is not particularly limited, it is usually in the range of about 1.8 to 5.0 mm, and particularly preferably 2.0 to 4.0 mm. The thickness of the sheet body refers to the maximum layer thickness when the thickness is nonuniform, such as when embossing is applied.
表層
本発明シートの表層は、塩化ビニル系樹脂、可塑剤及び熱安定剤を含み、かつ、前記熱安定剤がスズ系熱安定剤を含む。
Surface Layer The surface layer of the sheet of the present invention contains a vinyl chloride resin, a plasticizer and a heat stabilizer, and the heat stabilizer contains a tin heat stabilizer.
塩化ビニル系樹脂
塩化ビニル系樹脂は、少なくとも塩化ビニルの単量体を重合させることにより形成された重合体である。塩化ビニル系樹脂としては、塩化ビニルを単独重合させて得られる重合体（ホモポリマー）のほか、塩化ビニル及び塩化ビニルと共重合し得る他の単量体との共重合体（コポリマー）も包含される。また、塩化ビニル系樹脂としては、前記のホモポリマー及びコポリマーの混合物、２種以上のコポリマーの混合物等も用いることができる。ここに、混合物とは、ホモポリマーとコポリマー、あるいはコポリマーどうしが実質的に重合することなく、混練されたものをいう。
Vinyl chloride resin A vinyl chloride resin is a polymer formed by polymerizing at least a vinyl chloride monomer. Vinyl chloride resins include not only polymers obtained by homopolymerizing vinyl chloride (homopolymers) but also copolymers of vinyl chloride and other monomers copolymerizable with vinyl chloride (copolymers). To be done. As the vinyl chloride resin, a mixture of the above homopolymer and copolymer, a mixture of two or more kinds of copolymers, and the like can be used. Here, the mixture means a homopolymer and a copolymer, or a mixture in which the copolymers are substantially not polymerized and kneaded.
塩化ビニル系樹脂としては、塩化ビニル樹脂（ホモポリマー）のほか、塩化ビニル−酢酸ビニル共重合体、塩化ビニル−エチレン共重合体、塩化ビニル−プロピレン共重合体、塩化ビニル−スチレン共重合体、塩化ビニル−イソブチレン共重合体、塩化ビニル−塩化ビニリデン共重合体、塩化ビニル−ブタジエン共重合体、塩化ビニル−イソプレン共重合体、塩化ビニル−塩素化プロピレン共重合体等の塩化ビニルを含む共重合体（コポリマー）が挙げられる。これらの塩化ビニル系樹脂は、１種単独で又は２種以上を併用して使用することができる。 As the vinyl chloride resin, in addition to vinyl chloride resin (homopolymer), vinyl chloride-vinyl acetate copolymer, vinyl chloride-ethylene copolymer, vinyl chloride-propylene copolymer, vinyl chloride-styrene copolymer, Copolymer containing vinyl chloride such as vinyl chloride-isobutylene copolymer, vinyl chloride-vinylidene chloride copolymer, vinyl chloride-butadiene copolymer, vinyl chloride-isoprene copolymer, vinyl chloride-chlorinated propylene copolymer Examples thereof include a copolymer. These vinyl chloride resins can be used alone or in combination of two or more.
塩化ビニル系樹脂は、例えば乳化重合法、懸濁重合法、溶液重合法、塊状重合法等で製造されたものをいずれも用いることができる。本発明では、加工し易く、取り扱い易いという見地から、乳化重合法又は懸濁重合法で得られる塩化ビニル系樹脂を好適に用いることができる。特に、懸濁重合法で得られる塩化ビニル系樹脂は、白化を誘引する界面活性剤等の添加剤が少なく、より効果的に白化を抑制することができるという点でより望ましい。 As the vinyl chloride resin, any of those produced by, for example, an emulsion polymerization method, a suspension polymerization method, a solution polymerization method or a bulk polymerization method can be used. In the present invention, a vinyl chloride resin obtained by an emulsion polymerization method or a suspension polymerization method can be preferably used from the viewpoints of easy processing and easy handling. In particular, the vinyl chloride-based resin obtained by the suspension polymerization method is more desirable in that it has less additives such as a surfactant that induces whitening and can more effectively suppress whitening.
前記乳化重合法で得られる塩化ビニル系樹脂は、多数の微粒子集合体からなる基本粒子径数μｍ以下、好ましくは１〜３μｍの微細粉末の表面に界面活性剤がコーティングされたものであり、可塑剤等を配合することによってペースト状になるものである。前記乳化重合法による塩化ビニル系樹脂は、その平均重合度が１０００〜２０００程度のものが好適に用いられる。 The vinyl chloride resin obtained by the emulsion polymerization method is a fine powder having a basic particle diameter of several μm or less, preferably 1 to 3 μm, which is composed of a large number of fine particle aggregates, and a surface-active agent is coated on the surface of the fine powder. It is made into a paste by adding agents and the like. The vinyl chloride resin obtained by the emulsion polymerization method preferably has an average degree of polymerization of about 1000 to 2000.
前記懸濁重合法で得られる塩化ビニル系樹脂は、好ましくは２０〜１００μｍの微細粉末である。前記懸濁重合法による塩化ビニル系樹脂は、その平均重合度が５００〜１５００程度のものが好ましく、さらに７００〜１２００程度のものがより好ましい。前記塩化ビニル系樹脂は、Ｋ値が６０〜９５程度のものが好ましく、特にＫ値が６５〜８０程度のものがより好ましい。 The vinyl chloride resin obtained by the suspension polymerization method is preferably a fine powder of 20 to 100 μm. The vinyl chloride resin produced by the suspension polymerization method preferably has an average degree of polymerization of about 500 to 1500, more preferably about 700 to 1200. The vinyl chloride resin preferably has a K value of about 60 to 95, and more preferably has a K value of about 65 to 80.
前記塩化ビニル−酢酸ビニル共重合体等の塩化ビニルをモノマーとして含む共重合体は、ブロック状又はランダム状のいずれの重合形態のものでも良い。前記共重合体の平均重合度は７００〜１０００程度が好ましく、さらに７００〜８００程度がより好ましい。また、酢酸ビニル等の共重合成分（塩化ビニル以外の共重合成分）の割合は、加工性を向上できることから、５〜１２モル％程度であることが好ましく、５〜１０モル％程度であることがより好ましい。 The copolymer containing vinyl chloride as a monomer, such as the vinyl chloride-vinyl acetate copolymer, may be in a block or random polymerization form. The average degree of polymerization of the copolymer is preferably about 700 to 1000, more preferably about 700 to 800. Further, the proportion of the copolymerization component such as vinyl acetate (copolymerization component other than vinyl chloride) is preferably about 5 to 12 mol%, and is preferably about 5 to 10 mol%, since processability can be improved. Is more preferable.
また、塩化ビニル系樹脂は、必要に応じて架橋されていても良い。従って、例えば部分架橋塩化ビニル系樹脂等も好適に用いることができる。部分架橋塩化ビニル系樹脂は、塩化ビニルを懸濁重合、ミクロ懸濁重合又は乳化重合する際に多官能性モノマーを添加して重合を完結することにより得られるものを用いることができる。前記多官能性モノマーとしては、ポリエチレングリコールジアクリレート、ビスフェノールＡ変性ジアクリレート等のジアクリレート化合物等が挙げられる。 Further, the vinyl chloride resin may be crosslinked if necessary. Therefore, for example, a partially crosslinked vinyl chloride resin can also be preferably used. As the partially crosslinked vinyl chloride resin, a resin obtained by completing the polymerization by adding a polyfunctional monomer during suspension polymerization, micro suspension polymerization or emulsion polymerization of vinyl chloride can be used. Examples of the polyfunctional monomer include diacrylate compounds such as polyethylene glycol diacrylate and bisphenol A-modified diacrylate.
塩化ビニル系樹脂は、表層中における含有量が６０質量％以上あることが好ましく、特に７０質量％以上あることがより好ましい。これによって、炭酸カルシウム、可塑剤等の添加剤の量が相対的に少なくなる結果、防汚性に優れ、透明度の高い表層をより確実に得ることができる。 The content of the vinyl chloride resin in the surface layer is preferably 60% by mass or more, and more preferably 70% by mass or more. As a result, the amount of additives such as calcium carbonate and a plasticizer is relatively small, and as a result, a surface layer having excellent antifouling properties and high transparency can be obtained more reliably.
塩化ビニル系樹脂のうち、塩化ビニル−酢酸ビニル共重合体の含有量は、塩化ビニル系樹脂の総量１００質量部に対して３０質量部以下、好ましくは２０質量部以下、より好ましくは１０質量部以下である。特に、白化抑制という見地からみれば、最も好ましくは塩化ビニル−酢酸ビニル共重合体が表層中に実質的に含まれないことである。ここに、塩化ビニル−酢酸ビニル共重合体が表層中に実質的に含まれないとは、表層中に塩化ビニル−酢酸ビニル共重合体が完全に含まれていない場合のほか、微量（例えば１質量部以下）の塩化ビニル−酢酸ビニル共重合体が含まれている場合を意味する。このように塩化ビニル−酢酸ビニル共重合体の含有量を少なくすれば、製造時における熱安定性を維持しつつ、表層の白化をより効果的に抑制することができる。 In the vinyl chloride resin, the content of the vinyl chloride-vinyl acetate copolymer is 30 parts by mass or less, preferably 20 parts by mass or less, and more preferably 10 parts by mass based on 100 parts by mass of the total amount of vinyl chloride resin. It is as follows. Particularly, from the viewpoint of suppressing whitening, it is most preferable that the vinyl chloride-vinyl acetate copolymer is substantially not contained in the surface layer. Here, the fact that the vinyl chloride-vinyl acetate copolymer is not substantially contained in the surface layer means that the surface layer does not completely contain the vinyl chloride-vinyl acetate copolymer, and a small amount (for example, 1 (Part by mass or less) means that the vinyl chloride-vinyl acetate copolymer is contained. By thus reducing the content of the vinyl chloride-vinyl acetate copolymer, it is possible to more effectively suppress the whitening of the surface layer while maintaining the thermal stability during production.
可塑剤
可塑剤は、主として表層に含まれる塩化ビニル系樹脂の柔軟性を高めることを目的として添加される。塩化ビニル系樹脂は、表層の主成分であるため、塩化ビニル系樹脂の柔軟性が高められれば、表層の柔軟性も高められる。なお、表層が柔軟性を有するとは、例えば表層が直径１０ｃｍの円柱状の巻芯に巻き取ることができることを意味する。
Plasticizer A plasticizer is added mainly for the purpose of increasing the flexibility of the vinyl chloride resin contained in the surface layer. Since the vinyl chloride resin is the main component of the surface layer, if the flexibility of the vinyl chloride resin is increased, the flexibility of the surface layer is also increased. The term “the surface layer has flexibility” means that the surface layer can be wound around a cylindrical winding core having a diameter of 10 cm, for example.
可塑剤としては、例えばポリエステル系可塑剤、グリセリン系可塑剤、多価カルボン酸エステル系可塑剤、ポリアルキレングリコール系可塑剤等が挙げられる。 Examples of the plasticizer include polyester plasticizers, glycerin plasticizers, polycarboxylic acid ester plasticizers, polyalkylene glycol plasticizers, and the like.
ポリエステル系可塑剤としては、例えばアジピン酸、セバシン酸、テレフタル酸、イソフタル酸、ナフタレンジカルボン酸、ジフエニレンジカルボン酸、ロジン等の酸成分と、プロピレングリコール、１，３−ブタンジオール、１，４−ブタンジオール、１，６−ブタンジオール、エチレングリコール、ジエチレングリコール等のジオール成分とを反応させて得られるポリエステルのほか、ポリカプロラクトン等のヒドロキシカルボン酸からなるポリエステル等が挙げられる。 Examples of the polyester plasticizer include acid components such as adipic acid, sebacic acid, terephthalic acid, isophthalic acid, naphthalene dicarboxylic acid, diphenylene dicarboxylic acid, and rosin, and propylene glycol, 1,3-butanediol, 1,4 In addition to polyesters obtained by reacting with a diol component such as -butanediol, 1,6-butanediol, ethylene glycol and diethylene glycol, polyesters including hydroxycarboxylic acids such as polycaprolactone are listed.
グリセリン系可塑剤としては、例えばグリセリンモノアセトモノラウレート、グリセリンジアセトモノラウレート、グリセリンモノアセトモノステアレート、グリセリンジアセトモノオレート、グリセリンモノアセトモノモンタネート等が挙げられる。これらは、１種又は２種以上で用いることができる。 Examples of the glycerin-based plasticizer include glycerin monoacetomonolaurate, glycerin diacetomonolaurate, glycerin monoacetomonostearate, glycerin diacetomonooleate, and glycerin monoacetomonomontanate. These may be used alone or in combination of two or more.
多価カルボン酸系可塑剤としては、例えばフタル酸ジメチル、フタル酸ジエチル、フタル酸ジブチル、フタル酸ジオクチル、フタル酸ジヘプチル、フタル酸ジベンジル、フタル酸ブチルベンジル等のフタル酸エステル、トリメリット酸トリブチル、トリメリット酸トリオクチル、トリメリット酸トリへキシル等のトリメリット酸エステル、アジピン酸ジイソデシル、アジピン酸ｎ−オクチル−ｎ−デシル、アジピン酸メチルジグリコールブチルジグリコール、アジピン酸ベンジルブチルジグリコール等のアジピン酸エステル、アセチルクエン酸トリエチル、アセチルクエン酸トリブチル等のクエン酸エステル、アゼライン酸ジ−２−エチルヘキシル等のアゼライン酸エステル、セバシン酸ジブチル、セバシン酸ジ−２−エチルヘキシル等のセバシン酸エステル等が挙げられる。 Examples of the polycarboxylic acid-based plasticizer include dimethyl phthalate, diethyl phthalate, dibutyl phthalate, dioctyl phthalate, diheptyl phthalate, dibenzyl phthalate, phthalic acid esters such as butylbenzyl phthalate, and tributyl trimellitate. Trioctyl trimellitate, trimellitic acid ester such as trihexyl trimellitate, diisodecyl adipate, n-octyl-n-decyl adipate, adipic acid methyldiglycol butyl diglycol adipate, benzyl butyl diglycol adipate, etc. Acid esters, acetyl citrate triethyl, acetyl citrate tributyl and other citric acid esters, azelaic acid di-2-ethylhexyl and other azelaic acid esters, dibutyl sebacate, sebacic acid di-2-ethylhexyl and other sebacic acid esters, etc. To be
ポリアルキレングリコール系可塑剤としては、例えばポリエチレングリコール、ポリプロピレングリコール、ポリ（エチレンオキサイド・プロピレンオキサイド）ブロック及び／又はランダム共重合体、ポリテトラメチレングリコール、ビスフェノール類のエチレンオキサイド付加重合体、ビスフェノール類のプロピレンオキサイド付加重合体、ビスフェノール類のテトラヒドロフラン付加重合体等が挙げられる。 Examples of the polyalkylene glycol-based plasticizer include polyethylene glycol, polypropylene glycol, poly(ethylene oxide/propylene oxide) block and/or random copolymer, polytetramethylene glycol, ethylene oxide addition polymer of bisphenols, and bisphenols. Examples thereof include a propylene oxide addition polymer and a bisphenol tetrahydrofuran addition polymer.
本発明では、可塑剤としては、多価カルボン酸系可塑剤が好ましく、特にフタル酸エステルがより好ましく、さらにはフタル酸ジオクチルがより好ましい。多価カルボン酸系可塑剤は、塩化ビニル系樹脂に対する可塑化効率が高いので、製造コスト等の点で有利である。 In the present invention, the plasticizer is preferably a polycarboxylic acid-based plasticizer, more preferably a phthalate ester, and further preferably dioctyl phthalate. The polyvalent carboxylic acid plasticizer has a high plasticizing efficiency for the vinyl chloride resin, and is therefore advantageous in terms of manufacturing cost and the like.
表層に含まれる可塑剤の含有量は、用いる可塑剤の種類等に応じて適宜設定することができるが、少なすぎると所望の可塑剤の効果が得られにくくなる。これに対し、可塑剤の含有量が多すぎると白化抑制効果が低下するおそれがある。これは、多量の可塑剤によって塩化ビニル系樹脂を膨潤させる結果、分子構造中に水分子が取り込まれやすくなり、その水分子が白化を引き起こすためと考えられる。特に、軟質塩化ビニル系樹脂は、水分子を取り込みやすい構造を有しているため、白化がより生じやすい。 The content of the plasticizer contained in the surface layer can be appropriately set according to the type of the plasticizer used and the like, but if it is too small, it becomes difficult to obtain the desired effect of the plasticizer. On the other hand, if the content of the plasticizer is too large, the whitening suppression effect may be reduced. It is considered that this is because, as a result of swelling the vinyl chloride resin with a large amount of the plasticizer, water molecules are easily incorporated into the molecular structure and the water molecules cause whitening. In particular, the soft vinyl chloride resin has a structure in which water molecules are easily taken in, and thus whitening is more likely to occur.
これらの見地より、可塑剤の含有量は、次のように限定することが望ましい。上記含有量の下限値としては、塩化ビニル系樹脂１００質量部に対して通常は２０質量部程度とすれば良く、好ましくは２５質量部、より好ましくは３５質量部である。一方、上記含有量の上限値としては、塩化ビニル系樹脂１００質量部に対して通常は４１質量部程度とすれば良く、好ましくは３８質量部、より好ましくは３５質量部である。可塑剤の含有量を上記範囲内に設定することによって、白化しにくく、熱安定性に優れた内装シートをより確実に提供することができる。従って、例えば、可塑剤の含有量が、塩化ビニル系樹脂１００質量部に対して２６〜３８質量部とすれば、さらに柔軟性に優れた内装シートを提供することができる。 From these viewpoints, it is desirable to limit the content of the plasticizer as follows. The lower limit of the content is usually about 20 parts by mass, preferably 25 parts by mass, and more preferably 35 parts by mass with respect to 100 parts by mass of the vinyl chloride resin. On the other hand, the upper limit of the content is usually about 41 parts by mass, preferably 38 parts by mass, and more preferably 35 parts by mass with respect to 100 parts by mass of the vinyl chloride resin. By setting the content of the plasticizer within the above range, it is possible to more reliably provide the interior sheet that is less likely to be whitened and has excellent thermal stability. Therefore, for example, when the content of the plasticizer is 26 to 38 parts by mass with respect to 100 parts by mass of the vinyl chloride resin, it is possible to provide an interior sheet having further excellent flexibility.
熱安定剤１（スズ系熱安定剤）
熱安定剤は、主として内装シート製造時の熱によって表層に変色が生じることを抑制したり、発生する塩化水素を捕捉・分解するために添加される。本発明シートでは、熱安定剤として、少なくともスズ系熱安定剤を用いる。
Heat stabilizer 1 (Tin-based heat stabilizer)
The heat stabilizer is added mainly for suppressing discoloration of the surface layer due to heat during the production of the interior sheet, and for capturing and decomposing the generated hydrogen chloride. In the sheet of the present invention, at least a tin-based heat stabilizer is used as the heat stabilizer.
スズ系熱安定剤としては、スズ（Ｓｎ）を含有する金属有機化合物を用いることができる。このような熱安定剤自体は、安定剤又はＰＶＣ安定剤として知られているものを使用することができる。例えば、スズ系熱安定剤としては、メルカプト系、マレート系、ラウレート系等のスズ含有金属有機化合物を使用することができる。これらは１種単独で又は２種以上を併用しても良い。具体的には、メルカプト系は、例えばジブチル錫３−メルカプトプロピオン酸塩等のジブチル錫メルカプト、ジブチル錫メルカプト、ジメチル錫メルカプト等が挙げられる。マレート系は、例えばジオクチル錫マレート、ジブチル錫マレート、ジブチル錫マレートポリマー、ジオクチル錫マレート、ジオクチル錫マレートポリマー等が挙げられる。ラウレート系は、例えばジブチル錫ラウレート、ジブチル錫ラウレートポリマー等が挙げられる。これらは市販品を用いることもできる。これらの中でも、比較的少量の添加でより優れた白化抑制効果が得られるという点で、メルカプト系スズ含有金属有機化合物及びマレート系スズ含有金属有機化合物の少なくとも１種を含むスズ系熱安定剤を用いることが好ましい。 As the tin-based heat stabilizer, a metal organic compound containing tin (Sn) can be used. As such a heat stabilizer, those known as a stabilizer or a PVC stabilizer can be used. For example, as the tin-based heat stabilizer, tin-containing metal organic compounds such as mercapto-based, malate-based, and laurate-based compounds can be used. These may be used alone or in combination of two or more. Specific examples of the mercapto type include dibutyltin mercapto such as dibutyltin 3-mercaptopropionate, dibutyltin mercapto, dimethyltin mercapto, and the like. Examples of the malate system include dioctyl tin malate, dibutyl tin malate, dibutyl tin malate polymer, dioctyl tin malate, dioctyl tin malate polymer and the like. Examples of the laurate type include dibutyltin laurate and dibutyltin laurate polymer. A commercial item can also be used for these. Among these, a tin-based heat stabilizer containing at least one of a mercapto-based tin-containing metal organic compound and a malate-based tin-containing metal organic compound is obtained in that a more excellent whitening suppression effect can be obtained with a relatively small amount of addition. It is preferable to use.
スズ系熱安定剤の含有量は限定的ではないが、通常は塩化ビニル系樹脂１００質量部に対して０．１〜１．９質量部とすることが好ましく、特に０．３〜１．６重量部とすることがより好ましい。このような比較的少量の添加量によって、所望の白化抑制効果が得られるとともに、塩化ビニル系樹脂本来の性能をより効果的に引き出すことができる。また、スズ含有金属有機化合物に特有の臭いを効果的に抑制し、商品価値をより高めることも可能となる。 Although the content of the tin-based heat stabilizer is not limited, it is usually preferably 0.1 to 1.9 parts by mass, particularly 0.3 to 1.6 parts by mass with respect to 100 parts by mass of the vinyl chloride resin. It is more preferable to set it as a weight part. With such a relatively small amount of addition, the desired whitening suppressing effect can be obtained, and the original performance of the vinyl chloride resin can be more effectively brought out. Further, it becomes possible to effectively suppress the odor peculiar to the tin-containing metal organic compound and further enhance the commercial value.
熱安定剤２（その他の熱安定剤）
本発明シートでは、本発明の効果を妨げない範囲内において、必要に応じてスズ系熱安定剤以外の熱安定剤の少なくとも１種を併用することもできる。
Heat stabilizer 2 (other heat stabilizer)
In the sheet of the present invention, at least one kind of heat stabilizers other than the tin-based heat stabilizer may be used in combination, if necessary, within a range that does not impair the effects of the present invention.
例えば、液状熱安定剤としては、エポキシ系熱安定剤及び金属系熱安定剤を挙げることができる。 For example, the liquid heat stabilizer may include an epoxy heat stabilizer and a metal heat stabilizer.
エポキシ系熱安定剤としては、例えばエポキシ化植物油、エポキシ化脂肪酸アルキルエステル等を挙げることができる。エポキシ化植物油としては、例えばエポキシ化大豆油、エポキシ化アマニ油等が挙げられる。エポキシ化脂肪酸アルキルエステルとしては、例えばエポキシステアリン酸メチル、エポキシステアリン酸ブチル、エポキシステアリン酸２−エチルヘキシル等が挙げられる。 Examples of the epoxy heat stabilizer include epoxidized vegetable oil and epoxidized fatty acid alkyl ester. Examples of the epoxidized vegetable oil include epoxidized soybean oil and epoxidized linseed oil. Examples of the epoxidized fatty acid alkyl ester include methyl epoxystearate, butyl epoxystearate, and 2-ethylhexyl epoxystearate.
金属系熱安定剤は、少なくとも１種の金属原子を有する有機金属化合物を含むものであれば良く、好ましくは１種のみの金属原子を有する有機金属化合物を含む。１種のみの金属原子を有する有機金属化合物には、分子内に１種の金属原子が単数又は複数含まれる場合も包含される。 The metal-based heat stabilizer may contain an organometallic compound having at least one kind of metal atom, and preferably contains an organometallic compound having only one kind of metal atom. The organometallic compound having only one kind of metal atom includes a case where one kind or a plurality of kinds of metal atoms are contained in the molecule.
金属系熱安定剤としては、例えばバリウム系熱安定剤、亜鉛系熱安定剤、カルシウム系熱安定剤、ナトリウム系熱安定剤、鉛系熱安定剤等が挙げられる。 Examples of the metal-based heat stabilizer include barium-based heat stabilizer, zinc-based heat stabilizer, calcium-based heat stabilizer, sodium-based heat stabilizer, lead-based heat stabilizer, and the like.
バリウム系熱安定剤には、例えばステアリン酸バリウム、ラウリン酸バリウム、シリノール酸バリウム、ナフテン酸バリウム、２−エチルヘキソイン酸バリウム等が含まれる。カルシウム系熱安定剤には、例えばステアリン酸カルシウム、ラウリン酸カルシウム等が含まれる。ナトリウム系熱安定剤には、オレイン酸ナトリウム、パルミチン酸ナトリウム、ステアリン酸ナトリウム等が含まれる。鉛系熱安定剤には、例えば塩基性亜硫酸鉛、二塩基性亜リン酸鉛、二塩基性フタル酸鉛、三塩基性マレイン三鉛等が含まれる。 Examples of barium heat stabilizers include barium stearate, barium laurate, barium silinoleate, barium naphthenate, barium 2-ethylhexoate, and the like. The calcium-based heat stabilizer includes, for example, calcium stearate, calcium laurate and the like. Sodium-based heat stabilizers include sodium oleate, sodium palmitate, sodium stearate and the like. Examples of the lead-based heat stabilizer include basic lead sulfite, dibasic lead phosphite, dibasic lead phthalate, and tribasic maleic trilead.
固体状熱安定剤は、好ましくは粉末の形態をとる。粉末の形態である場合は、平均粒径０．５ｍｍ未満の固体状熱安定剤が全体の９０質量％以上を占めるような粒度分布であることが好ましい。なお、本発明における平均粒径は、透過型電子顕微鏡（ＴＥＭ）で粒子を観察して得られた像から任意に選んだ２００個の粒子（固体状熱安定剤の粒子）の最大幅の平均値を意味する。 The solid heat stabilizer is preferably in the form of a powder. When in the form of powder, it is preferable that the particle size distribution is such that the solid heat stabilizer having an average particle size of less than 0.5 mm accounts for 90% by mass or more of the whole. The average particle diameter in the present invention is the average of the maximum width of 200 particles (particles of the solid heat stabilizer) arbitrarily selected from an image obtained by observing the particles with a transmission electron microscope (TEM). Means a value.
固体状熱安定剤としては、２種以上の金属原子を有するものが好ましい。例えば、バリウム−亜鉛系熱安定剤、カルシウム−亜鉛系熱安定剤、亜鉛−ナトリウム系熱安定剤等が挙げられる。 As the solid heat stabilizer, those having two or more kinds of metal atoms are preferable. Examples thereof include barium-zinc heat stabilizers, calcium-zinc heat stabilizers, and zinc-sodium heat stabilizers.
スズ系熱安定剤以外の熱安定剤の含有量は特に限定されないが、本発明の効果をより効果的に引き出すという見地より、一般的には塩化ビニル系樹脂１００質量部に対して１０質量部以下、好ましくは５質量部以下の範囲内で適宜設定することができる。 The content of the heat stabilizer other than the tin-based heat stabilizer is not particularly limited, but generally 10 parts by mass with respect to 100 parts by mass of the vinyl chloride resin from the viewpoint of more effectively bringing out the effect of the present invention. Hereafter, it can be appropriately set within the range of preferably 5 parts by mass or less.
その他の成分
また、本発明シートでは、表層は、実質的に炭酸カルシウムを含まないことを条件として、各種の添加剤が含まれていても良い。
Other Components In addition, in the sheet of the present invention, the surface layer may contain various additives, provided that it does not substantially contain calcium carbonate.
前記実質的に炭酸カルシウムを含まないとは、樹脂成分又はマスターバッチの製造時に不用意に又は不可避的に炭酸カルシウムが混入する場合を許容する意味であって、本発明の効果を損ねない範囲で炭酸カルシウムが含まれている場合も含まれる。この場合、炭酸カルシウムの含有量は、表層中３質量％以下であり、好ましくは１質量％以下であり、最も好ましくは０質量％である。これによって、透明性を有する表層をより確実に得ることができる。 The term "substantially free of calcium carbonate" means that the case where calcium carbonate is inadvertently or unavoidably mixed in during the production of the resin component or the masterbatch is within a range that does not impair the effects of the present invention. It is also included when calcium carbonate is included. In this case, the content of calcium carbonate in the surface layer is 3% by mass or less, preferably 1% by mass or less, and most preferably 0% by mass. Thereby, the transparent surface layer can be obtained more reliably.
前記添加剤としては、公知又は市販のものを使用できる。例えば、界面活性剤、炭酸カルシウム以外の充填剤、可塑剤、難燃剤、酸化防止剤、加工助剤、滑剤、発泡剤、防黴剤、抗菌剤等が挙げられる。 Known or commercially available additives can be used as the additive. Examples thereof include surfactants, fillers other than calcium carbonate, plasticizers, flame retardants, antioxidants, processing aids, lubricants, foaming agents, antifungal agents, and antibacterial agents.
これら添加剤の中でも、特に界面活性剤を実質的に含んでいないことが望ましい。塩化ビニル系樹脂中に界面活性剤が含まれていると、白化現象が生じやすくなる。界面活性剤中の親水基と水が結びつきやすくなるので、樹脂の分子間に水分子が取り込まれやすくなり、取り込まれた水分子によって光が散乱又は乱反射することによってシート表面が白く見えるためと考えられる。この点、本発明の浴室用内装シートは、後述のように、白化抑制及び隠蔽効果に優れているので、表層に界面活性剤が含まれていても、シート表面が白く見え難くなる。 Among these additives, it is desirable that the surfactant is not substantially contained. If the vinyl chloride resin contains a surfactant, the whitening phenomenon is likely to occur. This is because the hydrophilic group in the surfactant and water are easily bound to each other, so that water molecules are easily incorporated between the molecules of the resin, and light is scattered or irregularly reflected by the incorporated water molecules so that the sheet surface looks white. To be In this respect, the bathroom interior sheet of the present invention is excellent in whitening suppression and concealment effects as described later, and therefore, even if a surface layer contains a surfactant, the surface of the sheet hardly looks white.
なお、前記実質的に界面活性剤を含まないとは、樹脂成分の製造時に不用意に又は不可避的に界面活性剤が混入する場合を許容する意味である。この実質的に含まない場合の界面活性剤の含有量は、表層中３質量％以下であり、好ましくは１質量％以下であり、最も好ましくは０質量％である。 The phrase "substantially free of a surfactant" means that the surfactant is allowed to be mixed inadvertently or unavoidably during the production of the resin component. The content of the surfactant when it is not substantially contained in the surface layer is 3% by mass or less, preferably 1% by mass or less, and most preferably 0% by mass.
表層の厚み、特性等
表層の厚みは限定的ではないが、通常は０．０５〜０．３５ｍｍ程度であり、好ましくは０．０７〜０．２５ｍｍとし、より好ましくは０．１〜０．２ｍｍである。このような範囲内に設定することによって、シート本体をより確実に保護しつつ、白化現象をより効果的に抑制することができる。
Thickness of surface layer, characteristics, etc. The thickness of the surface layer is not limited, but is usually about 0.05 to 0.35 mm, preferably 0.07 to 0.25 mm, and more preferably 0.1 to 0.2 mm. Is. By setting it within such a range, it is possible to more effectively suppress the whitening phenomenon while more reliably protecting the sheet body.
また、本発明シートにおいては、表層は透明、半透明又は不透明のいずれであっても良いが、特に透明性を有することが好ましい。従って、表層のヘーズ値としては４０％以下であることが好ましく、３０％以下であることがより好ましく、特に２０％以下であることがさらに好ましい。このような数値に設定することによって、表層の下地となる層（例えばシート本体の意匠層）の表面を視認できるような構成とすることができる。ヘーズ値の下限値は限定的ではないが、通常は１％程度とすれば良い。 Further, in the sheet of the present invention, the surface layer may be transparent, semi-transparent or opaque, but is preferably transparent. Therefore, the haze value of the surface layer is preferably 40% or less, more preferably 30% or less, and particularly preferably 20% or less. By setting to such a numerical value, the surface of the layer (for example, the design layer of the sheet body) serving as the underlayer of the surface layer can be visually recognized. Although the lower limit of the haze value is not limited, it is usually about 1%.
なお、ヘーズ値は、ＪＩＳ Ｋ７１３６（プラスチック−透明材料のヘーズの求め方）に準拠して濁度計（日本電色工業（株）製、製品名「ＮＤＨ２０００」，Ｄ６５光源）を用い、表層の表面側から入光させて測定した値である。 The haze value of the surface layer is measured using a turbidimeter (Nippon Denshoku Industries Co., Ltd., product name "NDH2000", D65 light source) in accordance with JIS K7136 (Plastic-Method for determining haze of transparent material). It is a value measured by allowing light to enter from the surface side.
２．本発明シートの製造
本発明シートは、上記のような特徴的な構成を採用するほかは、一般的な積層シートの製造方法に従って製造することができる。
2. Production of the Sheet of the Present Invention The sheet of the present invention can be produced according to a general method for producing a laminated sheet, in addition to adopting the characteristic constitution as described above.
例えば、ａ）各層の原料となる樹脂組成物を溶融混練し、それぞれをシート状に成形した後、各シートをラミネートする方法、ｂ）共押し出しにより積層シートを得る方法、ｃ）表層の原料となる樹脂成分の溶融物、溶液又は分散液を塗工することによりシート本体に表層を形成する方法等を採用することができる。 For example, a) a method of melt-kneading a resin composition as a raw material of each layer, forming each into a sheet, and then laminating each sheet, b) a method of obtaining a laminated sheet by coextrusion, c) a raw material of a surface layer It is possible to employ a method of forming a surface layer on the sheet body by applying a melt, a solution or a dispersion of the following resin component.
本発明では、特に、前記ａ）又はｂ）の方法は、原料の混練及びシート形成の過程で樹脂の分子構造を緻密にすることができるほか、界面活性剤を実質的に使用せずにシートを容易に製造することができる結果、白化の抑制に寄与できるという点で好適である。 In the present invention, in particular, the method a) or b) can make the molecular structure of the resin denser in the process of kneading the raw materials and forming the sheet, and the sheet can be made substantially without using a surfactant. As a result of being easily manufactured, it is suitable in that it can contribute to the suppression of whitening.
３．本発明シートの使用（設置）
本発明シートは、浴室の床面、側壁面及び天井面の少なくとも１つを構成する部材として使用することができる。
3. Use (installation) of the inventive sheet
The sheet of the present invention can be used as a member constituting at least one of a floor surface, a side wall surface and a ceiling surface of a bathroom.
例えば、ユニットバス（システムバス）の構成部材として本発明シートを取り付けることが可能である。また、ユニットバスによらずに浴室を構築・施工する場合においても、床面、側壁面及び天井面の少なくとも１つを構成する部材として本発明シートを取り付けることができる。さらには、既存の浴室をリフォームする場合において、所定の箇所だけを本発明シートに置き換えて取り付けることも可能である。なお、これらの取り付け方法自体は、公知の方法に従って実施することができる。これにより、本発明シートの表層中が最表面となるように本発明シートを床面、側壁面又は天井面に設置してなる構造を構成することができる。特に、本発明は、本発明シートの表層が最表面となるように浴室の床面に本発明シートが設置された浴室床構造も包含する。このような床構造によれば、水に最も頻繁に濡れやすい床面においても、優れた白化抑制効果等を得ることができる。 For example, the seat of the present invention can be attached as a constituent member of a unit bath (system bath). Further, even when a bathroom is constructed and constructed without using a unit bath, the sheet of the present invention can be attached as a member that constitutes at least one of the floor surface, the side wall surface, and the ceiling surface. Furthermore, in the case of reforming an existing bathroom, it is possible to replace only a predetermined portion with the sheet of the present invention and attach it. In addition, the mounting method itself can be performed according to a known method. This makes it possible to construct a structure in which the sheet of the present invention is installed on the floor surface, side wall surface, or ceiling surface so that the surface layer of the present invention sheet is the outermost surface. In particular, the present invention also includes a bathroom floor structure in which the sheet of the present invention is installed on the floor of the bathroom so that the surface layer of the sheet of the present invention is the outermost surface. According to such a floor structure, it is possible to obtain an excellent whitening suppressing effect and the like even on a floor surface that is most often wet with water.
４．本発明のシートの実施の形態（浴室用床シート）
本発明シートの実施形態の一つとして、浴室用床シートとして用いる場合の態様を図示しながら説明する。
4. Embodiment of the seat of the present invention (floor sheet for bathroom)
As one of the embodiments of the seat of the present invention, a mode of using it as a floor sheet for bathroom will be described with reference to the drawings.
図２には、本発明シートである浴室用床シートの平面図を示す。図３には、図１のＩＩ−ＩＩ線で切断した断面図を示す。図４には、図１の矢印ＩＩＩ方向から見た斜視図を示す。 FIG. 2 shows a plan view of a bathroom floor sheet that is a sheet of the present invention. FIG. 3 shows a sectional view taken along line II-II of FIG. FIG. 4 shows a perspective view as seen from the direction of arrow III in FIG.
図２では、下方（床面側）から順に下層２１、補強層２２、上層２３及び意匠層２４を有する本体シートならびに前記意匠層上に形成された表層３を有する浴室用床シート１が示されている。 In FIG. 2, a bathroom floor sheet 1 having a main body sheet having a lower layer 21, a reinforcing layer 22, an upper layer 23, and a design layer 24 and a surface layer 3 formed on the design layer is shown in order from the lower side (floor surface side). ing.
上層２３及び下層２１は、シート本体を主として構成する層である。上層２３及び下層２１の材質は特に限定されず、例えば軟質合成樹脂、半硬質合成樹脂、硬質合成樹脂、ゴム、ＦＲＰ等が挙げられる。前記の軟質、半硬質及び硬質についてはＪＩＳ Ｋ６９００（１９９４）のプラスチック用語に記載されているとおりである。特に、本発明では、上層２３及び下層２１は、柔軟性を有する内装シート１を構成するために、軟質合成樹脂、半硬質合成樹脂、ゴム等から構成されることが好ましい。 The upper layer 23 and the lower layer 21 are layers that mainly constitute the seat body. The material of the upper layer 23 and the lower layer 21 is not particularly limited, and examples thereof include soft synthetic resin, semi-hard synthetic resin, hard synthetic resin, rubber, FRP and the like. The above-mentioned soft, semi-hard and hard are as described in the plastic terms of JIS K6900 (1994). Particularly, in the present invention, the upper layer 23 and the lower layer 21 are preferably made of a soft synthetic resin, a semi-hard synthetic resin, rubber or the like in order to form the interior sheet 1 having flexibility.
上層２３及び下層２１は、発泡体又は非発泡体のいずれであっても良いが、少なくとも一方が発泡体であることが望ましい。 The upper layer 23 and the lower layer 21 may be either foam or non-foam, but at least one is preferably foam.
また、上層２３及び下層２１は、互いに同じ材料で構成されていても良いし、異なる材料で構成されていても良い。例えば、上層２３及び下層２１は、合成樹脂を含む層から構成される。より具体的には、塩化ビニル系樹脂、ポリオレフィン系樹脂、酢酸ビニル系樹脂、アクリル系樹脂、アミド系樹脂、ポリエステル系樹脂等のほか、オレフィンエラストマー、スチレンエラストマー等の各種エラストマーが挙げられる。これらの中でも、優れた柔軟性を有するとともに表層との密着性に優れるという点において、塩化ビニル系樹脂を用いることが好ましい。すなわち、上層２３及び下層２１ともに主たる樹脂成分として塩化ビニル系樹脂を用いることが好ましい。 Further, the upper layer 23 and the lower layer 21 may be made of the same material as each other or may be made of different materials. For example, the upper layer 23 and the lower layer 21 are composed of layers containing synthetic resin. More specifically, examples include vinyl chloride resins, polyolefin resins, vinyl acetate resins, acrylic resins, amide resins, polyester resins, and various elastomers such as olefin elastomers and styrene elastomers. Among these, a vinyl chloride resin is preferably used because it has excellent flexibility and excellent adhesion to the surface layer. That is, it is preferable to use a vinyl chloride resin as the main resin component for both the upper layer 23 and the lower layer 21.
補強層２２は、シート本体２の剛性を高め、かつ、シート本体２に寸法安定性を付与するための層である。 The reinforcing layer 22 is a layer for increasing the rigidity of the seat body 2 and imparting dimensional stability to the seat body 2.
シート本体２中における補強層２２の位置は特に限定されないが、例えば図２に示すように、上層２３と下層２１の間に配置されることが好ましい。また、必要に応じて補強層は複数設けられても良く、例えば上層２３と下層２１との間に設けるほか、下層の裏面にも補強層を設けることができる。 Although the position of the reinforcing layer 22 in the seat body 2 is not particularly limited, it is preferably arranged between the upper layer 23 and the lower layer 21 as shown in FIG. 2, for example. If necessary, a plurality of reinforcing layers may be provided. For example, the reinforcing layer may be provided between the upper layer 23 and the lower layer 21, and the reinforcing layer may be provided on the back surface of the lower layer.
補強層５は、補強材を含むことが好ましい。例えば、ガラスマット、ガラスネット、樹脂製マット、樹脂製ネット、無機繊維又は有機繊維からなる不織布又はフェルト、及び、織布等が挙げられる。 The reinforcing layer 5 preferably contains a reinforcing material. Examples thereof include glass mats, glass nets, resin mats, resin nets, non-woven fabrics or felts made of inorganic fibers or organic fibers, and woven fabrics.
補強層５に用いられる繊維は、発泡層４との接着性が高いものが好ましい。例えば、ガラス繊維、ビニロン繊維、ポリエステル繊維、ポリアミド繊維、ポリイミド繊維等の少なくとも１種を用いることができる。この中でも、強度に優れ、かつ、寸法変化が小さいという点から、特にガラス繊維を用いることが好ましい。ガラス繊維を用いる場合、１０〜１００ｇ／ｍ２のガラス繊維織布又は不織布が特に好ましい。また、例えばポリエステル等の他の繊維を用いた織布又は不織布についても、同程度の目付量が好ましい。 The fiber used for the reinforcing layer 5 is preferably one having high adhesiveness to the foam layer 4. For example, at least one kind of glass fiber, vinylon fiber, polyester fiber, polyamide fiber, polyimide fiber and the like can be used. Among these, glass fibers are particularly preferable because they are excellent in strength and have a small dimensional change. When glass fibers are used, 10 to 100 g/m 2 of glass fiber woven or non-woven fabric is particularly preferable. Further, for woven or non-woven fabrics using other fibers such as polyester, the same basis weight is preferable.
補強層５の厚みは特に制限されないが、補強層の機能の見地より、一般的には０．１〜０．４ｍｍ程度の範囲内とすることが好ましい。 The thickness of the reinforcing layer 5 is not particularly limited, but from the viewpoint of the function of the reinforcing layer, it is generally preferable that the thickness is within the range of about 0.1 to 0.4 mm.
意匠層２４は、内装シート１の表面に絵柄を表出させる機能を有する。意匠層は、例えばデザイン（意匠）を印刷又は転写することにより形成される。 The design layer 24 has a function of exposing a pattern on the surface of the interior sheet 1. The design layer is formed, for example, by printing or transferring a design (design).
意匠層上に積層される表層は、塩化ビニル系樹脂、可塑剤及びスズ系熱安定剤を含むことを特徴し、各成分は前記で説明した材料を用いることができる。 The surface layer laminated on the design layer is characterized by containing a vinyl chloride resin, a plasticizer and a tin heat stabilizer, and the materials described above can be used for each component.
また、表層の形状は特に限定されないが、表面に滑り止めを目的として凹凸部が形成されていることが好ましい。例えば、図２〜図４に示す内装シート（浴室用床シート）では、その表面に複数の凸部３１及び凹部３２からなる凹凸パターン領域４を有する。複数の凸部３１は縦横に隣接して配置され、複数の凹部３２は隣接する凸部２１の間に形成されている。本実施形態では、複数の凸部３１及び凹部３２からなる凹凸パターン領域４を１つのユニットとして、そのユニット単位がシート本体２の縦横に複数配置されている。なお、図示されている態様では、凸部３１は平面視略正方形状であるが、この形状は任意の形状に適宜設定することができる。また、複数の凸部３１は同じ形状及び大きさとなるように形成されているが、形状及び大きさが互いに異なる凸部が混在していても良い。従って、例えば凸部表面には、多数の微細突起が形成されていても良い。図４において、凸部３１の頂面に形成された多数のドットは微細突起を示している。 Further, the shape of the surface layer is not particularly limited, but it is preferable that the surface has an uneven portion for the purpose of preventing slippage. For example, the interior sheet (bathroom floor sheet) shown in FIGS. 2 to 4 has an uneven pattern area 4 including a plurality of convex portions 31 and concave portions 32 on its surface. The plurality of protrusions 31 are vertically and horizontally adjacent to each other, and the plurality of recesses 32 are formed between the adjacent protrusions 21. In the present embodiment, the concavo-convex pattern area 4 including the plurality of convex portions 31 and the plurality of concave portions 32 is regarded as one unit, and a plurality of unit units are arranged vertically and horizontally on the sheet body 2. In the illustrated embodiment, the convex portion 31 has a substantially square shape in plan view, but this shape can be appropriately set to any shape. Further, although the plurality of convex portions 31 are formed to have the same shape and size, the convex portions having different shapes and sizes may be mixed. Therefore, for example, many fine protrusions may be formed on the surface of the convex portion. In FIG. 4, a large number of dots formed on the top surface of the convex portion 31 indicate fine protrusions.
図３及び図４に示すように、凸部３１は、突出端に略平坦な面を有し、この略平坦な面が凸部３１の頂面である。頂面は傾斜面とされている。すなわち、表層に付着した水が下方に流れ落ちるように、当該表層の一部又は全部が水平面に対して傾斜するように形成されている。従って、凸部３１の頂面に付着した水は、頂面の傾斜に従って一定の方向に流すことができる結果、排水性が向上する。 As shown in FIGS. 3 and 4, the convex portion 31 has a substantially flat surface at the projecting end, and this substantially flat surface is the top surface of the convex portion 31. The top surface is an inclined surface. That is, part or all of the surface layer is formed so as to be inclined with respect to the horizontal plane so that the water attached to the surface layer flows downward. Therefore, the water adhering to the top surface of the convex portion 31 can flow in a certain direction in accordance with the inclination of the top surface, and as a result, the drainage property is improved.
また、図４に示すように、１つの凹凸パターン領域４中では、頂面の傾斜方向が異なる少なくとも２つの凸部３１が設けられている。 Further, as shown in FIG. 4, in one uneven pattern region 4, at least two convex portions 31 having different top surface inclination directions are provided.
各凸部３１の頂面の傾斜角度は特に限定されないが、傾斜角度が小さすぎる（水平に近づく）と頂面に付着した水が凹部３２のほうに流れにくくなり、また傾斜角度が大きすぎると足裏に感じる凹凸感が増し、入浴者に違和感を与えるおそれがある。このため、各頂面の傾斜角度は、ｔａｎ−１（１／１００）度〜ｔａｎ−１（１０／１００）度の範囲とすることが好ましく、特にｔａｎ−１（２／１００）度〜ｔａｎ−１（８／１００）度の範囲とすることがより好ましく、さらにはｔａｎ−１（３／１００）度〜ｔａｎ−１（７／１００）度の範囲とすることが最も好ましい。なお、頂面の傾斜角度は、本発明シートの裏面（略平坦面）を水平面上に載せた状態で水平面と頂面とがなす角度をいう。 The inclination angle of the top surface of each convex portion 31 is not particularly limited, but if the inclination angle is too small (close to horizontal), water attached to the top surface will not flow easily toward the concave portion 32, and if the inclination angle is too large. The feeling of unevenness on the soles of the feet may increase, which may make the bather feel uncomfortable. Therefore, the inclination angle of each top surface is preferably in the range of tan −1 (1/100) degrees to tan −1 (10/100) degrees, and particularly tan −1 (2/100) degrees to tan. The range of -1 (8/100) degrees is more preferable, and the range of tan -1 (3/100) degrees to tan -1 (7/100) degrees is the most preferable. The inclination angle of the top surface means the angle formed by the horizontal surface and the top surface with the back surface (substantially flat surface) of the sheet of the present invention placed on the horizontal surface.
以下に実施例及び比較例を示し、本発明の特徴をより具体的に説明する。ただし、本発明の範囲は、実施例に限定されない。 The features of the present invention will be described more specifically below with reference to Examples and Comparative Examples. However, the scope of the present invention is not limited to the examples.
実施例１
表１〜表４に示す組成（組成の数値の単位は質量部を示す。）になるように各原料を配合し、十分に混合した後、二軸ロール機にて１５０℃で５分間混練し、厚み０．２ｍｍのシート状に成形した。所定のサイズに加工することによって試験用表層（厚み０．２ｍｍ×縦１００ｍｍ×横１００ｍｍ）を作製した。
Example 1
The respective raw materials were blended so as to have the compositions shown in Tables 1 to 4 (the unit of the numerical value of the composition indicates parts by mass), thoroughly mixed, and then kneaded at 150° C. for 5 minutes with a twin-screw roll machine. Then, it was formed into a sheet having a thickness of 0.2 mm. A test surface layer (thickness 0.2 mm×length 100 mm×width 100 mm) was produced by processing into a predetermined size.
なお、本実施例では、表層の表面の白化の有無を確認することが目的であることから、シート本体の作製は省略した。同様の理由により、表層の表面に凹凸を形成する必要もないので、凹凸加工を施すことなく、その表面は平坦状のままで試験に供した。 In this example, the purpose of checking the presence or absence of whitening on the surface of the surface layer was omitted, so that the production of the sheet body was omitted. For the same reason, since it is not necessary to form unevenness on the surface of the surface layer, the surface of the surface layer was subjected to the test without any unevenness processing.
なお、各表に示す各原料の表記は、具体的には以下のものを示す。
（１）サスペンション塩ビ（重合度８００）：新第一塩ビ（株）製、商品名「８００Ｙ」、重合度８００
（２）サスペンション塩ビ（重合度１０００）：新第一塩ビ（株）製、商品名「ＺＥＳＴ１０００Ｚ」
（３）架橋塩ビ（重合度１１００）：信越化学工業（株）製、商品名「ＧＲ１３００Ｓ」、サスペンションタイプの塩化ビニル樹脂を部分架橋したもの、Ｋ値６８
（４）塩ビ酢ビ共重合体：塩化ビニル−酢酸ビニル共重合体、（株）カネカ製、商品名「ＭＢ１００８」（酢酸ビニル量１０モル％）Ｋ値５８
（５）可塑剤Ａ（フタル酸系可塑剤）：フタル酸ジオクチル、新日本理化（株）製、商品名「サンソサイザーＤＯＰ」
（６）可塑剤Ｂ（アジピン酸系可塑剤）：新日本理化（株）製、商品名「サンソサイザーＤＯＡ」
（７）可塑剤Ｃ（トリメリット酸系可塑剤）：（株）ＡＤＥＫＡ製、商品名「Ｃ−８ＢＮ」
（８）可塑剤Ｄ（安息香酸系可塑剤）：ＶＥＬＳＩＣＯＬ製、商品名「ｖｅｌｓｉｆｌｅｘ３２０」
（９）エポキシ系大豆油：液状エポキシ化大豆油、三和合成化学（株）製、商品名「Ｔ−４０００」
（１０）安定剤Ａ（Ｂａ系液状熱安定剤）：液状バリウム系熱安定剤、（株）ＡＤＥＫＡ製、商品名「ＡＣ７０４」
（１１）安定剤Ｂ（Ｂａ−Ｚｎ系粉状熱安定剤）：粉状バリウム−亜鉛系熱安定剤、（株）ＡＤＥＫＡ製、商品名「ＡＰ−６２３Ｇ」
（１２）安定剤Ｃ（Ｂａ−Ｚｎ系液状熱安定剤）：液状バリウム−亜鉛系熱安定剤、昭島化学工業（株）製、商品名「ＬＴ７００Ａ」
（１３）安定剤Ｄ（Ｓｎ系粉状熱安定剤）：メルカプト系スズ、東京ファインケミカル（株）製、商品名「ＥＭＢＩＬＩＺＥＲ ＡＰ−５２」
（１４）安定剤Ｅ（Ｓｎ系液状熱安定剤）：メルカプト系スズ、東京ファインケミカル（株）製、商品名「ＥＭＢＩＬＩＺＥＲ ＳＢ−３３」
（１５）安定剤Ｆ（Ｓｎ系粉状安定剤）：マレート系スズ、勝田化工（株）製、商品名「Ｔ−３４８」
（１６）安定剤Ｇ（Ｓｎ系粉状安定剤）：ラウレート系スズ、勝田化工（株）製、商品名「ＴＭ−２８１Ｃ」
（１７）その他の添加剤：エチレン酢酸ビニル（加工助材）、高分子アクリル（滑剤）及び防黴剤
In addition, the notation of each raw material shown in each table specifically shows the following.
(1) Suspension PVC (polymerization degree 800): manufactured by Shin-Daiichi PVC Co., Ltd., trade name "800Y", polymerization degree 800
(2) Suspension PVC (degree of polymerization 1000): New Dai-ichi PVC Co., Ltd., trade name "ZEST1000Z"
(3) Cross-linked vinyl chloride (degree of polymerization 1100): Shin-Etsu Chemical Co., Ltd., trade name "GR1300S", partially cross-linked suspension type vinyl chloride resin, K value 68
(4) Vinyl acetate/vinyl acetate copolymer: vinyl chloride-vinyl acetate copolymer, manufactured by Kaneka Corporation, trade name “MB1008” (vinyl acetate amount 10 mol %), K value 58
(5) Plasticizer A (phthalic acid-based plasticizer): Dioctyl phthalate, manufactured by Shin Nippon Rika Co., Ltd., trade name "Sanso Sizer DOP"
(6) Plasticizer B (adipic acid-based plasticizer): manufactured by Shin Nippon Rika Co., Ltd., trade name "SANSOCIZER DOA"
(7) Plasticizer C (trimellitic acid plasticizer): manufactured by ADEKA Co., Ltd., trade name "C-8BN"
(8) Plasticizer D (benzoic acid-based plasticizer): VELSICOL, trade name "velsiflex 320"
(9) Epoxy soybean oil: liquid epoxidized soybean oil, manufactured by Sanwa Synthetic Chemical Co., Ltd., trade name "T-4000"
(10) Stabilizer A (Ba-based liquid heat stabilizer): Liquid barium-based heat stabilizer, manufactured by ADEKA Corporation, product name "AC704"
(11) Stabilizer B (Ba-Zn-based powdery heat stabilizer): Powdery barium-zinc-based heat stabilizer, manufactured by ADEKA, trade name "AP-623G"
(12) Stabilizer C (Ba-Zn-based liquid heat stabilizer): Liquid barium-zinc-based heat stabilizer, manufactured by Akishima Chemical Co., Ltd., trade name "LT700A"
(13) Stabilizer D (Sn-based powdery heat stabilizer): mercapto-based tin, manufactured by Tokyo Fine Chemical Co., Ltd., trade name "EMBILIZER AP-52"
(14) Stabilizer E (Sn-based liquid heat stabilizer): mercapto-based tin, manufactured by Tokyo Fine Chemical Co., Ltd., trade name “EMBILIZER SB-33”
(15) Stabilizer F (Sn-based powdery stabilizer): Malate tin, manufactured by Katsuta Kako Co., Ltd., trade name "T-348"
(16) Stabilizer G (Sn powder stabilizer): laurate tin, manufactured by Katsuta Kako Co., Ltd., trade name "TM-281C"
(17) Other additives: ethylene vinyl acetate (processing aid), polymer acrylic (lubricant) and antifungal agent
試験例１（白化の評価）
ＪＩＳ Ｚ ８７２２（色の測定方法−反射及び透過物体色）に基づき、試験用表層を４０℃の温水に２４時間浸漬し、浸漬前後における色差、すなわち白化の度合いを測定した。より具体的には、試験用表層を黒色シートの上に載置した状態で、色差計（ミノルタ（株）製、製品名「ＣＲ−３１０」）を用いて測定した。その結果を表１に示す。ＣＩＥ−Ｌ＊ａ＊ｂ＊表色系における浸漬前の表層の色と浸漬後の表層の色との差が大きいほど白化が顕著であることを示す。その結果を表１〜表４に示す。
Test Example 1 (Evaluation of whitening)
Based on JIS Z 8722 (color measurement method-reflection and transmission object color), the test surface layer was immersed in warm water at 40°C for 24 hours, and the color difference before and after immersion, that is, the degree of whitening was measured. More specifically, the test surface layer was placed on a black sheet and measured with a color difference meter (product name "CR-310" manufactured by Minolta Co., Ltd.). The results are shown in Table 1. The larger the difference between the color of the surface layer before immersion and the color of the surface layer after immersion in the CIE-L*a*b* color system, the more marked whitening is. The results are shown in Tables 1 to 4.
表１〜表４中の温水白化性能について、「×」は浸漬前後で色差が６．５を超え、顕著な白化が生じたことを示し、「△」は浸漬前後で色差が４．５を超え６．５以下であり、白化が生じたものの許容できることを示し、「○」は浸漬前後で色差が２．０を超え４．５以下であり、白化があまり認められなかったものを示し、「◎」は浸漬前後で色差が２．０以下であり、白化がほとんど認められなかったものを示す。 Regarding the hot water whitening performance in Tables 1 to 4, "x" indicates that the color difference before and after immersion exceeded 6.5, and remarkable whitening occurred, and "△" indicates that the color difference was 4.5 before and after immersion. It was more than 6.5 and less than or equal to white, but it was acceptable, but "○" indicates that the color difference before and after immersion was more than 2.0 and less than or equal to 4.5, and whitening was not observed so much. “⊚” indicates that the color difference before and after immersion was 2.0 or less, and almost no whitening was observed.
試験例２（熱安定性の評価）
熱安定性は、実機の加工を想定した温度（通常は約１６０〜２００℃）において、各原料を含む混合物をシート状に成形したものが熱劣化するのに要した時間を測定した。この熱劣化とは、シート成形体に変色及び／又は硬化が認められる状態になることをいう。より具体的には、１９０℃のオーブンに上記混合物を投入し、投入後１５分ごとに６０分間試料を採取し続け、採取した試料の熱劣化を評価した。その結果を表１〜表４に示す。
Test Example 2 (Evaluation of thermal stability)
The thermal stability was measured by measuring the time required for thermal deterioration of a sheet-shaped mixture formed of a mixture containing each raw material at a temperature (usually about 160 to 200° C.) that is assumed to be used for actual processing. The term "heat deterioration" means that discoloration and/or curing is observed in the sheet molded body. More specifically, the above mixture was put into an oven at 190° C., and samples were taken every 15 minutes for 60 minutes, and the thermal deterioration of the sample was evaluated. The results are shown in Tables 1 to 4.
表１〜表４中、「×」はオーブン投入後１５分までに熱劣化し、熱安定性が低いものを示し、「△」はオーブン投入後１５分以降３０分までに熱劣化し、十分な熱安定性を有するものを示し、「○」はオーブン投入後３０分以降４５分までに熱劣化し、優れた熱安定性を有するものを示し、「◎」はオーブン投入後４５分以降に熱劣化し、より優れた熱安定性を有するものを示す。 In Tables 1 to 4, "x" indicates that the material deteriorates in heat by 15 minutes after being placed in the oven and has low thermal stability, and "△" indicates that the material deteriorates by heat after 15 minutes and 30 minutes after being placed in the oven. "○" indicates heat deterioration by 30 minutes to 45 minutes after being put in the oven, and shows excellent thermal stability. "◎" shows 45 minutes or more after putting in the oven. Those which are deteriorated by heat and have more excellent thermal stability are shown.
表１〜表４の結果からも明らかなように、本発明の実施例では、比較的少量の熱安定剤で良好な熱安定性とともに優れた白化抑制効果が得られることがわかる。 As is clear from the results of Tables 1 to 4, in the examples of the present invention, it is found that a relatively small amount of the heat stabilizer can provide good heat stability and an excellent whitening suppressing effect.
Claims (3)
（１）前記表層が塩化ビニル系樹脂、可塑剤及び熱安定剤を含み、
（２）前記可塑剤が多価カルボン酸系可塑剤であり、
（３）前記熱安定剤がメルカプト系スズ含有金属有機化合物及びマレート系スズ含有金属有機化合物の少なくとも１種を含むスズ系熱安定剤を含み、
（４）スズ系熱安定剤の含有量が、塩化ビニル系樹脂１００質量部に対して０．１〜１．９質量部であり、
（５）前記表層中における界面活性剤の含有量が０質量％である、
ことを特徴とする浴室用内装シート。 Look including transparency surface provided on the seat body and the surface of the seat body, and the seat body is a sheet having a design layer underlying the surface layer,
(1) The surface layer contains a vinyl chloride resin, a plasticizer and a heat stabilizer,
(2) The plasticizer is a polycarboxylic acid-based plasticizer,
(3) The heat stabilizer contains a tin-based heat stabilizer containing at least one of a mercapto-based tin-containing metal organic compound and a malate-based tin-containing metal organic compound ,
(4) The content of the tin-based heat stabilizer is 0.1 to 1.9 parts by mass with respect to 100 parts by mass of the vinyl chloride resin,
(5) The content of the surfactant in the surface layer is 0% by mass,
Interior sheet for bathroom, which is characterized.
A bathroom floor structure in which the bathroom interior sheet according to claim 1 or 2 is installed on a floor of a bathroom such that the surface layer is the outermost surface.
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| KR102270842B1 (en) * | 2020-12-21 | 2021-06-30 | 한국건설기술연구원 | the improved bottom panel unit and the bottom panel structure using the same and the construction method thereof |
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| JPS5343738A (en) * | 1976-09-30 | 1978-04-20 | Matsushita Electric Works Ltd | Vinyl chloride resin compositions |
| JPS60233141A (en) * | 1984-05-07 | 1985-11-19 | Nippon Chem Ind Co Ltd:The | Vinyl chloride resin composition |
| JPS61274937A (en) * | 1985-05-31 | 1986-12-05 | 三菱樹脂株式会社 | Composite board |
| JPS6243447A (en) * | 1985-08-21 | 1987-02-25 | Mitsubishi Kasei Vinyl Co | Vinyl chloride based resin plastisol composition |
| JPH07119345B2 (en) * | 1989-01-17 | 1995-12-20 | 信越化学工業株式会社 | Vinyl chloride resin hoses and tubes |
| JP2516479B2 (en) * | 1990-12-27 | 1996-07-24 | アキレス株式会社 | Resin composition for transparent layer |
| US5413870A (en) * | 1994-01-03 | 1995-05-09 | Flood; Christopher J. | Decorative bathroom panel including embedded fabric |
| JP2001031819A (en) * | 1999-05-18 | 2001-02-06 | Sankyo Organic Chem Co Ltd | Chlorine-containing resin composition |
| JP4209735B2 (en) * | 2003-07-08 | 2009-01-14 | 三菱樹脂株式会社 | Transparent and flame retardant vinyl chloride resin laminate with whitening resistance to hot water |
| JP4490724B2 (en) * | 2004-04-15 | 2010-06-30 | 三菱樹脂株式会社 | Flame-retardant vinyl chloride resin composition and molded article |
| JP6068288B2 (en) * | 2013-07-31 | 2017-01-25 | 東リ株式会社 | Interior sheet for bathroom |
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