JP2021001244A - High brightness resin molding - Google Patents
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- JP2021001244A JP2021001244A JP2019114209A JP2019114209A JP2021001244A JP 2021001244 A JP2021001244 A JP 2021001244A JP 2019114209 A JP2019114209 A JP 2019114209A JP 2019114209 A JP2019114209 A JP 2019114209A JP 2021001244 A JP2021001244 A JP 2021001244A
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- 229920005989 resin Polymers 0.000 title claims abstract description 227
- 239000011347 resin Substances 0.000 title claims abstract description 227
- 238000000465 moulding Methods 0.000 title description 8
- 239000000049 pigment Substances 0.000 claims abstract description 104
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 59
- 239000002245 particle Substances 0.000 claims abstract description 51
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 111
- 238000007639 printing Methods 0.000 claims description 30
- 239000006260 foam Substances 0.000 claims description 26
- 241000270322 Lepidosauria Species 0.000 claims description 16
- 230000003746 surface roughness Effects 0.000 claims description 13
- 238000004806 packaging method and process Methods 0.000 claims description 9
- 229920001169 thermoplastic Polymers 0.000 abstract description 4
- 239000004416 thermosoftening plastic Substances 0.000 abstract description 4
- 239000005001 laminate film Substances 0.000 abstract 2
- 239000004793 Polystyrene Substances 0.000 description 34
- 238000000034 method Methods 0.000 description 33
- 229920002223 polystyrene Polymers 0.000 description 29
- 239000010419 fine particle Substances 0.000 description 18
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 16
- 230000000694 effects Effects 0.000 description 15
- 238000005259 measurement Methods 0.000 description 15
- 239000010410 layer Substances 0.000 description 14
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- 235000013305 food Nutrition 0.000 description 13
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- 238000009826 distribution Methods 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 11
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- 238000011156 evaluation Methods 0.000 description 8
- 229920005669 high impact polystyrene Polymers 0.000 description 8
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- 235000010215 titanium dioxide Nutrition 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000004408 titanium dioxide Substances 0.000 description 6
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 5
- 235000013361 beverage Nutrition 0.000 description 5
- 239000011521 glass Substances 0.000 description 5
- 230000000007 visual effect Effects 0.000 description 5
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 239000000654 additive Substances 0.000 description 4
- 125000001931 aliphatic group Chemical group 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
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- 229920003002 synthetic resin Polymers 0.000 description 4
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- 239000004594 Masterbatch (MB) Substances 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 3
- 150000001733 carboxylic acid esters Chemical class 0.000 description 3
- 230000002950 deficient Effects 0.000 description 3
- -1 for example Substances 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 238000007429 general method Methods 0.000 description 3
- 238000004898 kneading Methods 0.000 description 3
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 150000004706 metal oxides Chemical class 0.000 description 3
- 239000010445 mica Substances 0.000 description 3
- 229910052618 mica group Inorganic materials 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 229920000468 styrene butadiene styrene block copolymer Polymers 0.000 description 3
- 150000003440 styrenes Chemical class 0.000 description 3
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 3
- 238000007666 vacuum forming Methods 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- FACXGONDLDSNOE-UHFFFAOYSA-N buta-1,3-diene;styrene Chemical compound C=CC=C.C=CC1=CC=CC=C1.C=CC1=CC=CC=C1 FACXGONDLDSNOE-UHFFFAOYSA-N 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 239000005357 flat glass Substances 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
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- 238000002844 melting Methods 0.000 description 2
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- 125000001570 methylene group Chemical group [H]C([H])([*:1])[*:2] 0.000 description 2
- 238000010534 nucleophilic substitution reaction Methods 0.000 description 2
- 238000007645 offset printing Methods 0.000 description 2
- 229920001955 polyphenylene ether Polymers 0.000 description 2
- 238000000790 scattering method Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 229920003048 styrene butadiene rubber Polymers 0.000 description 2
- 238000009823 thermal lamination Methods 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- SRXJYTZCORKVNA-UHFFFAOYSA-N 1-bromoethenylbenzene Chemical compound BrC(=C)C1=CC=CC=C1 SRXJYTZCORKVNA-UHFFFAOYSA-N 0.000 description 1
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- RUROFEVDCUGKHD-UHFFFAOYSA-N 3-bromoprop-1-enylbenzene Chemical compound BrCC=CC1=CC=CC=C1 RUROFEVDCUGKHD-UHFFFAOYSA-N 0.000 description 1
- IWTYTFSSTWXZFU-UHFFFAOYSA-N 3-chloroprop-1-enylbenzene Chemical compound ClCC=CC1=CC=CC=C1 IWTYTFSSTWXZFU-UHFFFAOYSA-N 0.000 description 1
- JLBJTVDPSNHSKJ-UHFFFAOYSA-N 4-Methylstyrene Chemical compound CC1=CC=C(C=C)C=C1 JLBJTVDPSNHSKJ-UHFFFAOYSA-N 0.000 description 1
- 229920002126 Acrylic acid copolymer Polymers 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 101100206738 Mus musculus Tiam2 gene Proteins 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- YMOONIIMQBGTDU-VOTSOKGWSA-N [(e)-2-bromoethenyl]benzene Chemical compound Br\C=C\C1=CC=CC=C1 YMOONIIMQBGTDU-VOTSOKGWSA-N 0.000 description 1
- RJDOZRNNYVAULJ-UHFFFAOYSA-L [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[F-].[F-].[Mg++].[Mg++].[Mg++].[Al+3].[Si+4].[Si+4].[Si+4].[K+] Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[F-].[F-].[Mg++].[Mg++].[Mg++].[Al+3].[Si+4].[Si+4].[Si+4].[K+] RJDOZRNNYVAULJ-UHFFFAOYSA-L 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 125000005233 alkylalcohol group Chemical group 0.000 description 1
- 125000002947 alkylene group Chemical group 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 229910000420 cerium oxide Inorganic materials 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229920006026 co-polymeric resin Polymers 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000000412 dendrimer Substances 0.000 description 1
- 229920000736 dendritic polymer Polymers 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000002296 dynamic light scattering Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 229920006248 expandable polystyrene Polymers 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229920000587 hyperbranched polymer Polymers 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 125000005395 methacrylic acid group Chemical group 0.000 description 1
- 125000001434 methanylylidene group Chemical group [H]C#[*] 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 150000001451 organic peroxides Chemical class 0.000 description 1
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 1
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical class [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 229920013636 polyphenyl ether polymer Polymers 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 239000011164 primary particle Substances 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000012748 slip agent Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 229920003066 styrene-(meth)acrylic acid ester copolymer Polymers 0.000 description 1
- 125000003011 styrenyl group Chemical group [H]\C(*)=C(/[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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- 229920006027 ternary co-polymer Polymers 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 125000005424 tosyloxy group Chemical group S(=O)(=O)(C1=CC=C(C)C=C1)O* 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
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Landscapes
- Packages (AREA)
- Wrappers (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Laminated Bodies (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
本発明は、透明性と光沢性を備えたキラキラした高輝性を持つフィルム、詳しくは、高輝性顔料を含む透明感のある高輝性樹脂フィルム、積層シート、容器、及び、包装体に関する。特に、熱成形容器に用いられる熱ラミネート用高輝性スチレン系樹脂フィルム、積層シート容器、及び包装体に関する。 The present invention relates to a film having high brilliance and brilliance having transparency and gloss, specifically, a transparent high shine resin film containing a high shine pigment, a laminated sheet, a container, and a packaging body. In particular, the present invention relates to a high-brightness styrene resin film for thermoforming used in a thermoformed container, a laminated sheet container, and a package.
従来、透明性のある樹脂、特にポリスチレンに代表されるスチレン系樹脂は安価であり、その透明性に加えて、成形性、寸法安定性、剛性、更には発泡特性等にも優れることから、樹脂シートや樹脂フィルムへと加工され、広く用いられている。また、スチレン系樹脂シートとしては発泡体シートと非発泡体シートがあり、食品包装分野で食品用容器等へ熱成形する用途に多用されている。 Conventionally, transparent resins, especially styrene-based resins typified by polystyrene, are inexpensive and are excellent in moldability, dimensional stability, rigidity, foaming properties, etc. in addition to their transparency. It is processed into sheets and resin films and is widely used. Further, as the styrene resin sheet, there are a foam sheet and a non-foam sheet, which are widely used in the food packaging field for thermoforming into food containers and the like.
スチレン系樹脂フィルムは、フィルムの持つ高光沢、透明性と腰の強さの特徴から、食品包装分野や、封筒窓材用途で使用されている。食品包装分野では、樹脂シート基材、例えば、スチレン系樹脂シート基材としてのハイインパクトポリスチレン（ＨＩＰＳ）シートや発泡体状のポリスチレンペーパー（ＰＳＰ）等との熱ラミネート用途として広く使用されており、裏刷り印刷された熱ラミネート用フィルムは意匠性に優れることに加え、スチレン系樹脂フィルムとシート基材とは同素材でリサイクルし易いことも使用される理由にある。これらスチレン系樹脂フィルムを熱ラミネートされた積層シートは、スチレン系樹脂シート基材と同様に真空成形や圧縮成形等により熱成形され、食品用容器、飲料用容器等の熱成形容器に広く利用されている。 Styrene-based resin films are used in the food packaging field and envelope window materials because of the high gloss, transparency, and stiffness of the film. In the food packaging field, it is widely used for thermal lamination with resin sheet base materials, for example, high-impact polystyrene (HIPS) sheets as styrene-based resin sheet base materials, foamed polystyrene paper (PSP), and the like. The reason why the styrene resin film and the sheet base material are the same material and easy to recycle is also used, in addition to the excellent design of the back-printed thermal laminating film. The laminated sheet obtained by thermoforming these styrene resin films is thermoformed by vacuum forming, compression molding, etc. like the styrene resin sheet base material, and is widely used for thermoforming containers such as food containers and beverage containers. ing.
近年、スーパーやコンビニエンスストア等の店頭において刺身、寿司、弁当、惣菜を始めとする各種の食品を販売するに際しては、スチレン系樹脂フィルムに裏刷り印刷されたフィルムを樹脂シート基材に熱ラミネートにて積層した積層シートを熱成形した容器（トレー）が、トレー内容物である食品に意匠性を与える効果があることから広く使われている。 In recent years, when selling various foods such as sashimi, sushi, bento boxes, and prepared foods at supermarkets and convenience stores, the film back-printed on a styrene resin film is heat-laminated on a resin sheet base material. A container (tray) obtained by heat-molding a laminated sheet laminated with a sushi is widely used because it has an effect of giving a design to the food content of the tray.
特許文献１には、線状ポリスチレン及び多分岐状ポリスチレンを含有するスチレン系樹脂を含むスチレン系樹脂組成物に少量のゴム成分（ＨＩＰＳ等）を配合し、少なくとも１方向に延伸して得た、熱ラミネート用スチレン系樹脂フィルムが開示されており、透明性や光沢性に優れ、印刷仕上がりが良いとされている。 Patent Document 1 is obtained by blending a small amount of a rubber component (HIPS or the like) with a styrene resin composition containing a styrene resin containing linear polystyrene and polybranched polystyrene, and stretching the mixture in at least one direction. A styrene resin film for thermal laminating is disclosed, which is said to have excellent transparency and glossiness and a good print finish.
一方でその意匠性に差別的な高級感を与える目的から、更なる改良として、裏刷り印刷したフィルムにキラキラ感を与える熱ラミネート用の高輝性スチレン系樹脂フィルムが望まれている。
特許文献２には、異物感やくすみがなく透明感があり、立体感のある優れた高輝性樹脂フィルムとして、平均厚さ０．０５〜７μｍ、平均粒径１０〜３００μｍのフレーク状ガラスの表面を該フレーク状ガラスよりも高い屈折率を有する金属酸化物を厚さ０．０２〜０．８μｍで被覆してなる鱗片状粒子の光沢顔料（鱗片状顔料）を含む液状の合成樹脂を剥離性に優れた基材上に塗布した後に乾燥して光沢性合成樹脂塗膜を形成して得た光沢性合成樹脂フィルム（厚さ１００μｍ以下）が開示されている。
On the other hand, for the purpose of giving a discriminatory luxury feeling to the design, as a further improvement, a high-brightness styrene resin film for heat laminating that gives a glittering feeling to the back-printed film is desired.
Patent Document 2 describes the surface of flake-shaped glass having an average thickness of 0.05 to 7 μm and an average particle size of 10 to 300 μm as an excellent high-brightness resin film having a transparent feeling without foreign matter or dullness and having a three-dimensional effect. A liquid synthetic resin containing a bright pigment (scaly pigment) of scaly particles formed by coating a metal oxide having a refractive index higher than that of the flake-shaped glass with a thickness of 0.02 to 0.8 μm. A glossy synthetic resin film (thickness of 100 μm or less) obtained by forming a glossy synthetic resin coating film after being applied on a substrate excellent in
しかしながら、特許文献２に記載されている光沢性樹脂フィルムは、二酸化チタン等の金属酸化物被膜フレーク状ガラスの鱗片状の無機顔料（鱗片状顔料）を１質量％以上含む塩化ビニル系樹脂等の液状合成樹脂組成物の溶剤を乾燥して得た無延伸樹脂フィルムであり、キラキラした光沢性は得られるものの透明性に劣るため、裏刷り印刷を行うと印刷の視認性に問題が有る。 However, the glossy resin film described in Patent Document 2 is a vinyl chloride resin or the like containing 1% by mass or more of a scaly inorganic pigment (scaly pigment) of a metal oxide-coated flake-shaped glass such as titanium dioxide. It is a non-stretched resin film obtained by drying a solvent of a liquid synthetic resin composition, and although it can obtain glittering gloss, it is inferior in transparency. Therefore, there is a problem in printing visibility when back printing is performed.
そこで、本発明は、優れた透明性及び光沢性を有し、かつキラキラとした高輝性を備えるフィルムを提供することを目的とする。
また、本発明は、該フィルムを含む高輝性樹脂積層フィルム、高輝性樹脂積層シート、容器、及び包装体を提供することを目的とする。
Therefore, an object of the present invention is to provide a film having excellent transparency and glossiness, and also having a glittering high brilliance.
Another object of the present invention is to provide a high-brightness resin laminated film containing the film, a high-brightness resin laminated sheet, a container, and a package.
本発明者は、上記課題を解決するため鋭意検討を重ねた結果、熱可塑性樹脂と特定の鱗片状顔料とを含む高輝性樹脂フィルムにおいて、特定のヘイズ値を満足することで、透明性、光沢性を備えた、高輝性樹脂フィルムが得られることを見出し、本発明を完成させた。 As a result of diligent studies to solve the above problems, the present inventor satisfies a specific haze value in a high-brightness resin film containing a thermoplastic resin and a specific scaly pigment, thereby achieving transparency and gloss. The present invention has been completed by finding that a highly bright resin film having properties can be obtained.
即ち、本発明は、以下の高輝性樹脂フィルム、高輝性樹脂積層フィルム、高輝性樹脂積層シート、容器、及び包装体を提供するものである。 That is, the present invention provides the following high-brightness resin film, high-brightness resin laminated film, high-brightness resin laminated sheet, container, and package.
［１］
熱可塑性樹脂と、アスペクト比が３以上であり、平均粒径が１０〜１００μｍである鱗片状顔料とを含み、
前記鱗片状顔料の含有量が前記熱可塑性樹脂を１００質量％として０．０１〜１．０質量％であり、
２５μｍ厚み換算した換算ヘイズ値（Ｈ２５）が５％以下である
ことを特徴とする、高輝性樹脂フィルム。
［２］
少なくとも一方の面の表面粗さ（Ｒａ）が０．１〜５．０μｍである、［１］に記載の高輝性樹脂フィルム。
［３］
前記熱可塑性樹脂がスチレン系樹脂を含み、前記鱗片状顔料が高輝顔料又はパール顔料を含む、［１］又は［２］に記載の高輝性樹脂フィルム。
［４］
［１］〜［３］のいずれかに記載の高輝性樹脂フィルムの少なくとも一方の面に、前記熱可塑性樹脂を含み、前記鱗片状顔料を含まないフィルムが積層されていることを特徴とする、高輝性樹脂積層フィルム。
［５］
［１］〜［３］のいずれかに記載の高輝性樹脂フィルムと、前記熱可塑性樹脂を含み前記鱗片状顔料を含まないフィルムとが、共押出により積層されていることを特徴とする、請求項４に記載の高輝性樹脂積層フィルム。
［６］
［１］〜［３］のいずれかに記載の高輝性樹脂フィルム、又は［４］若しくは［５］に記載の高輝性樹脂積層フィルムと、熱可塑性樹脂発泡体とが積層されていることを特徴とする、高輝性樹脂積層シート。
［７］
［１］〜［３］のいずれかに記載の高輝性樹脂フィルム、又は［４］若しくは［５］に記載の高輝性樹脂積層フィルムと、印刷インキ層と、熱可塑性樹脂発泡体とが積層されていることを特徴とする、高輝性樹脂積層シート。
［８］
［１］〜［３］のいずれかに記載の高輝性樹脂フィルム、又は［４］若しくは［５］に記載の高輝性樹脂積層フィルムと、印刷インキ層と、熱可塑性樹脂発泡体とが、この順番に積層されている、［７］に記載の高輝性樹脂積層シート。
［９］
熱可塑性樹脂と、アスペクト比が３以上であり、平均粒径が１０〜１００μｍである鱗片状顔料とを含み、前記鱗片状顔料の含有量が前記熱可塑性樹脂を１００質量％として０．０１〜１．０質量％である高輝性樹脂フィルムの少なくとも一方の面に、前記熱可塑性樹脂を含み、前記鱗片状顔料を含まないフィルムが積層されており、２５μｍ厚み換算した換算ヘイズ値（Ｈ２５）が５％以下である高輝性樹脂積層フィルムであり、
少なくとも一方の面の表面粗さ（Ｒａ）が０．１〜５．０μｍである
ことを特徴とする、高輝性樹脂積層フィルム。
［１０］
前記熱可塑性樹脂がスチレン系樹脂を含み、前記鱗片状顔料が高輝顔料又はパール顔料を含む、［９］に記載の高輝性樹脂積層フィルム。
［１１］
熱可塑性樹脂と、アスペクト比が３以上であり、平均粒径が１０〜１００μｍである鱗片状顔料とを含み、前記鱗片状顔料の含有量が前記熱可塑性樹脂を１００質量％として０．０１〜１．０質量％であるフィルムと、前記熱可塑性樹脂を含み、前記鱗片状顔料を含まないフィルムとが、共押出により積層されている、［９］又は［１０］に記載の高輝性樹脂積層フィルム。
［１２］
［９］〜［１１］のいずれかに記載の高輝性樹脂積層フィルムと、熱可塑性樹脂発泡体とが積層されていることを特徴とする、高輝性樹脂積層シート。
［１３］
［９］〜［１１］のいずれかに記載の高輝性樹脂積層フィルムと、印刷インキ層と、熱可塑性樹脂発泡体とが積層されていることを特徴とする、高輝性樹脂積層シート。
［１４］
［９］〜［１１］のいずれかに記載の高輝性樹脂積層フィルムと、印刷インキ層と、熱可塑性樹脂発泡体とが、この順番に積層されている、［１３］に記載の高輝性樹脂積層シート。
［１５］
［６］〜［８］、［１２］〜［１４］のいずれかに記載の高輝性樹脂積層シートよりなることを特徴とする、容器。
［１６］
［１５］に記載の容器と前記容器に嵌合することが可能な蓋とを含むことを特徴とする、包装体。
[1]
It contains a thermoplastic resin and a reptile pigment having an aspect ratio of 3 or more and an average particle size of 10 to 100 μm.
The content of the reptile pigment is 0.01 to 1.0% by mass with the thermoplastic resin as 100% by mass.
A highly bright resin film characterized in that the converted haze value (H25) converted to a thickness of 25 μm is 5% or less.
[2]
The highly bright resin film according to [1], wherein the surface roughness (Ra) of at least one surface is 0.1 to 5.0 μm.
[3]
The high-brightness resin film according to [1] or [2], wherein the thermoplastic resin contains a styrene resin and the scaly pigment contains a high-brightness pigment or a pearl pigment.
[4]
A film containing the thermoplastic resin and not containing the scaly pigment is laminated on at least one surface of the high-luminance resin film according to any one of [1] to [3]. Highly bright resin laminated film.
[5]
The above-mentioned high-luminance resin film according to any one of [1] to [3] and a film containing the thermoplastic resin and not containing the scaly pigment are laminated by coextrusion. Item 4. The high-brightness resin laminated film according to Item 4.
[6]
The feature is that the high-brightness resin film according to any one of [1] to [3] or the high-brightness resin laminated film according to [4] or [5] is laminated with a thermoplastic resin foam. Highly bright resin laminated sheet.
[7]
The high-brightness resin film according to any one of [1] to [3] or the high-brightness resin laminated film according to [4] or [5], a printing ink layer, and a thermoplastic resin foam are laminated. A high-brightness resin laminated sheet characterized by being
[8]
The high-brightness resin film according to any one of [1] to [3], or the high-brightness resin laminated film according to [4] or [5], a printing ink layer, and a thermoplastic resin foam are the same. The highly bright resin laminated sheet according to [7], which is laminated in order.
[9]
It contains a thermoplastic resin and a scaly pigment having an aspect ratio of 3 or more and an average particle size of 10 to 100 μm, and the content of the scaly pigment is 0.01 to 0.01 by mass% of the thermoplastic resin. A film containing the thermoplastic resin and not containing the scaly pigment is laminated on at least one surface of the high-brightness resin film having a thickness of 1.0% by mass, and a converted haze value (H25) converted to a thickness of 25 μm is obtained. It is a high-brightness resin laminated film with 5% or less.
A high-brightness resin laminated film having a surface roughness (Ra) of at least one surface of 0.1 to 5.0 μm.
[10]
The highly bright resin laminated film according to [9], wherein the thermoplastic resin contains a styrene resin and the scaly pigment contains a high brightness pigment or a pearl pigment.
[11]
It contains a thermoplastic resin and a scaly pigment having an aspect ratio of 3 or more and an average particle size of 10 to 100 μm, and the content of the scaly pigment is 0.01 to 0.01 by mass% of the thermoplastic resin. [9] or [10], wherein the 1.0% by mass film and the film containing the thermoplastic resin and not containing the scaly pigment are laminated by coextrusion. the film.
[12]
A high-brightness resin laminated sheet, characterized in that the high-brightness resin laminated film according to any one of [9] to [11] and a thermoplastic resin foam are laminated.
[13]
A high-brightness resin laminated sheet, characterized in that the high-brightness resin laminated film according to any one of [9] to [11], a printing ink layer, and a thermoplastic resin foam are laminated.
[14]
The high-brightness resin according to [13], wherein the high-brightness resin laminated film according to any one of [9] to [11], a printing ink layer, and a thermoplastic resin foam are laminated in this order. Laminated sheet.
[15]
A container comprising the high-brightness resin laminated sheet according to any one of [6] to [8] and [12] to [14].
[16]
A packaging body comprising the container according to [15] and a lid that can be fitted to the container.
本発明によれば、優れた透明性及び光沢性を有し、かつキラキラとした高輝性を備えるフィルムを提供することができる。また、本発明によれば、該フィルムを含む高輝性樹脂積層フィルム、高輝性樹脂積層シート、容器、及び包装体を提供することができる。 According to the present invention, it is possible to provide a film having excellent transparency and glossiness, and also having a glittering high brightness. Further, according to the present invention, it is possible to provide a high-brightness resin laminated film containing the film, a high-brightness resin laminated sheet, a container, and a package.
以下、本発明の実施形態（以下、「本実施形態」ともいう。）について、詳細に説明するが、本発明は本実施形態に限定されるものではない。 Hereinafter, embodiments of the present invention (hereinafter, also referred to as “the present embodiment”) will be described in detail, but the present invention is not limited to the present embodiment.
＜高輝性樹脂フィルム＞
本実施形態の高輝性樹脂フィルムは、高輝性樹脂組成物からなるものとしてよく、本実施形態の高輝性樹脂組成物は、熱可塑性樹脂、鱗片状顔料を含み、各種添加剤を更に含んでいてよい。
より詳細には、本実施形態の高輝性樹脂フィルムは、熱可塑性樹脂と、アスペクト比が３以上であり、平均粒径が１０〜１００μｍである鱗片状顔料とを含む。そして、本実施形態の高輝性樹脂フィルムは、鱗片状顔料を０．０１〜１．０質量％含有する。また、本実施形態の高輝性樹脂フィルムの換算ヘイズ値（Ｈ２５）は５％以下である。
<High brightness resin film>
The high-brightness resin film of the present embodiment may be made of a high-brightness resin composition, and the high-brightness resin composition of the present embodiment contains a thermoplastic resin, a scaly pigment, and further contains various additives. Good.
More specifically, the high-brightness resin film of the present embodiment contains a thermoplastic resin and a scaly pigment having an aspect ratio of 3 or more and an average particle size of 10 to 100 μm. The high-brightness resin film of the present embodiment contains 0.01 to 1.0% by mass of a scaly pigment. Further, the converted haze value (H25) of the high-brightness resin film of the present embodiment is 5% or less.
＜＜熱可塑性樹脂＞＞
本実施形態の熱可塑性樹脂とは、スチレン系樹脂、エチレン系樹脂やプロピレン系樹脂等のオレフィン系樹脂、エステル系樹脂、アミド系樹脂等が挙げられる。このうち１種を単独で、又は２種以上の混合により使用することができる。又、本実施形態の高輝性樹脂フィルムは、熱圧着により、高輝性樹脂フィルムと樹脂シートとを積層して積層シートを成形することができ、また、得られた積層シートは、食品用容器、飲料用容器、カップ麺容器等の熱成形容器の材料として好適に使用することができる。
<< Thermoplastic resin >>
Examples of the thermoplastic resin of the present embodiment include styrene-based resins, olefin-based resins such as ethylene-based resins and propylene-based resins, ester-based resins, and amide-based resins. One of them can be used alone or by mixing two or more kinds. Further, the high-brightness resin film of the present embodiment can be formed by laminating the high-brightness resin film and the resin sheet by thermal pressure bonding, and the obtained laminated sheet can be used as a food container. It can be suitably used as a material for heat-molded containers such as beverage containers and cup noodle containers.
本実施形態の熱可塑性樹脂の中でも、特にポリスチレンに代表されるスチレン系樹脂は安価であり、その透明性に加えて、成形性、寸法安定性、剛性、更には発泡特性等にも優れる観点から、スチレン系樹脂が好適に用いられる。 Among the thermoplastic resins of the present embodiment, styrene-based resins typified by polystyrene are inexpensive, and in addition to their transparency, they are excellent in moldability, dimensional stability, rigidity, foaming properties, and the like. , Styrene-based resin is preferably used.
−スチレン系樹脂−
本実施形態において好適に用いられるスチレン系樹脂とは、スチレン系単量体の単独重合体又は共重合体よりなる線状ポリスチレン；スチレン系単量体、多分岐状マクロモノマー、及び脂肪族不飽和カルボン酸エステルを共重合してなる多分岐状ポリスチレン；又は、これらの混合組成物；であり、フィルム状に製膜することができる透明性のあるスチレン系樹脂組成物であることが好ましい。
-Styrene resin-
The styrene resin preferably used in the present embodiment is a linear polystyrene composed of a homopolymer or a copolymer of a styrene monomer; a styrene monomer, a polybranched macromonomer, and an aliphatic unsaturated. It is a multi-branched polystyrene obtained by copolymerizing a carboxylic acid ester; or a mixed composition thereof; and is preferably a transparent styrene-based resin composition capable of forming a film.
スチレン系単量体としては、スチレン（スチレンの単独重合体として、例えば、汎用ポリスチレン（ＧＰＰＳ））又はその誘導体を用いることができる。スチレン誘導体としては、例えば、メチルスチレン、α−メチルスチレン等のアルキル置換スチレン、ブロモスチレン、α−ブロモスチレン等のハロゲン置換スチレン等が挙げられる。 As the styrene-based monomer, styrene (for example, general-purpose polystyrene (GPPS) as a homopolymer of styrene) or a derivative thereof can be used. Examples of the styrene derivative include alkyl-substituted styrenes such as methylstyrene and α-methylstyrene, halogen-substituted styrenes such as bromostyrene and α-bromostyrene, and the like.
また、スチレン系単量体の共重合体としては、スチレン−（メタ）アクリル酸共重合体、スチレン−（メタ）アクリル酸エステル共重合体、スチレン−酸無水物共重合体、及び、これら３種の共重合体のいずれか１種を構成する２種のモノマー成分に更なるモノマー成分であるエステル成分を含む三元共重合樹脂からなる群より選ばれる少なくとも１種、スチレン−ブタジエン共重合体（ＳＢ樹脂）、ハイインパクトポリスチレン（ＨＩＰＳ）、及びスチレン−ブタジエン−スチレン系樹脂（ＳＢＳ樹脂）からなる群より選ばれる少なくとも１種の耐衝撃性ポリスチレン、スチレン−α−メチルスチレン共重合体等の公知の共重合体樹脂が挙げられる。また、ポリスチレンとポリフェニレンエーテル樹脂とのポリマーアロイ（ｍ−ＰＰＥ）も挙げられる。 Examples of the styrene-based monomer copolymer include a styrene- (meth) acrylic acid copolymer, a styrene- (meth) acrylic acid ester copolymer, a styrene-acid anhydride copolymer, and 3 thereof. At least one styrene-butadiene copolymer selected from the group consisting of a ternary copolymer resin containing an ester component which is a further monomer component in addition to two monomer components constituting any one of the copolymers of the species. (SB resin), high-impact polystyrene (HIPS), and at least one impact-resistant polystyrene selected from the group consisting of styrene-butadiene-styrene-based resin (SBS resin), styrene-α-methylstyrene copolymer, and the like. Examples thereof include known copolymer resins. Further, a polymer alloy (m-PPE) of polystyrene and a polyphenylene ether resin can also be mentioned.
上記のスチレン系単量体の共重合体におけるスチレン系単量体に由来する構成成分の含有量は、共重合体１００質量％に対して、５０質量％以上であることが好ましく、より好ましくは７０質量％以上、更に好ましくは８５質量％以上である。 The content of the constituent components derived from the styrene-based monomer in the above-mentioned copolymer of the styrene-based monomer is preferably 50% by mass or more, more preferably 50% by mass or more, based on 100% by mass of the copolymer. It is 70% by mass or more, more preferably 85% by mass or more.
上記多分岐状ポリスチレンは、分岐構造を有している。分岐の構造として、一般的には、ランダム分岐型構造、星形構造、又はポンポン型構造がある。 The multi-branched polystyrene has a branched structure. The branching structure generally includes a random branching structure, a star-shaped structure, or a ponpon-shaped structure.
スチレン系樹脂に分岐を導入する方法としては、有機過酸化物を用いる方法、多官能モノマーを用いる方法、イオン架橋による方法、又は多分岐状マクロモノマーを用いる方法がある。
これらの方法のうち、多分岐状マクロモノマーを用いることにより星形構造とポンポン型とが共存する分子構造を有するスチレン系樹脂を得る方法は、ゲル化抑制、フィルムの押出し性、製膜性、及び二次成形性（伸び及び厚みが均一）の観点から好ましい。
Examples of the method for introducing branching into the styrene resin include a method using an organic peroxide, a method using a polyfunctional monomer, a method by ion cross-linking, and a method using a polybranched macromonomer.
Among these methods, the method of obtaining a styrene-based resin having a molecular structure in which a star-shaped structure and a ponpon-shaped structure coexist by using a multi-branched macromonomer includes gelation suppression, film extrudability, and film-forming property. It is preferable from the viewpoint of secondary moldability (uniform elongation and thickness).
多分岐状マクロモノマーとしては、複数の分岐を有し、かつ、スチレン系単量体と共重合可能な脂肪族不飽和結合を有するモノマーを用いることができる。多分岐状マクロモノマーは、例えば、特開２０１１−２０２０６４号公報に示される方法により得ることができる。 As the multi-branched macromonomer, a monomer having a plurality of branches and having an aliphatic unsaturated bond copolymerizable with the styrene-based monomer can be used. The multi-branched macromonomer can be obtained, for example, by the method shown in JP-A-2011-202064.
多分岐状マクロモノマーとして、例えば、デンドリマー、ハイパーブランチポリマー、多分岐ポリエーテルポリオールに（メタ）アクリル基を導入したマクロモノマー、１分子中に活性メチレン基と、臭素、塩素、メチルスルホニルオキシ基又はトシルオキシ基等とを有するＡＢ２型モノマーを求核置換反応させて得られる、多分岐状の自己縮合型重縮合体を前駆体として、該重縮合体中に残存する未反応の活性メチレン基又はメチン基を、クロロメチルスチレン、ブロモメチルスチレン等と求核置換反応させることによって重合性二重結合を導入して得られる、多分岐状マクロモノマー等を好適に用いることができる。 As the multi-branched macromonomer, for example, a dendrimer, a hyperbranched polymer, a macromonomer in which a (meth) acrylic group is introduced into a multi-branched polyether polyol, an active methylene group in one molecule, and bromine, chlorine, methylsulfonyloxy group or An unreacted active methylene group or methine remaining in the polycondensate using a multi-branched self-condensation polycondensate obtained by nucleophilic substitution of an AB2 type monomer having a tosyloxy group or the like as a precursor. A polybranched macromonomer or the like obtained by introducing a polymerizable double bond by subjecting the group to a nucleophilic substitution reaction with chloromethylstyrene, bromomethylstyrene or the like can be preferably used.
多分岐状マクロモノマーの質量平均分子量は、特に限定されず、１０００〜１５０００程度が好ましい。 The mass average molecular weight of the polybranched macromonomer is not particularly limited, and is preferably about 1000 to 15000.
脂肪族不飽和カルボン酸エステルとしては、例えば、（メタ）アクリル酸エステル誘導体が挙げられ、具体的には（メタ）アクリル酸メチル、（メタ）アクリル酸エチル、（メタ）アクリル酸プロピル、（メタ）アクリル酸ブチル等の（メタ）アクリル酸と炭素数１〜１２のアルキルアルコールとのエステル類、（メタ）アクリル酸とアルキレンオキサイドとのエステル類、（メタ）アクリル酸と脂環式アルコールとのエステル類等が挙げられる。これらの内から少なくとも１種が選択されることが好ましい。
なお、（メタ）アクリルとは、アクリル又はこれに対応するメタクリルを意味する。この中でも、（メタ）アクリル酸ブチル又は（メタ）アクリル酸エチルが好ましく、熱ラミネート用樹脂フィルムの厚み斑、熱成形容器の深絞り成形性の観点から、アクリル酸ブチル又はアクリル酸エチルがより好ましい。
Examples of the aliphatic unsaturated carboxylic acid ester include (meth) acrylic acid ester derivatives, specifically, methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, and (meth). ) Esters of (meth) acrylic acid such as butyl acrylate and alkyl alcohol having 1 to 12 carbon atoms, esters of (meth) acrylic acid and alkylene oxide, (meth) acrylic acid and alicyclic alcohol Esters and the like can be mentioned. It is preferable that at least one of these is selected.
The (meth) acrylic means acrylic or methacrylic corresponding thereto. Among these, butyl (meth) acrylate or ethyl (meth) acrylate is preferable, and butyl acrylate or ethyl acrylate is more preferable from the viewpoint of thickness unevenness of the resin film for thermoforming and deep drawability of the thermoforming container. ..
多分岐状ポリスチレン中の脂肪族不飽和カルボン酸エステル単位の含有量は、全スチレン系樹脂１００質量％に対して、０．５〜３．５質量％であることが好ましく、０．６〜３．３質量％であることがより好ましく、０．９〜２．５質量％であることが更に好ましい。０．５質量％より少ないと、深絞り性が不十分であり、３．５質量％より多いと、フィルムに製膜する工程でフィルムの厚み斑が大きくなったり、深絞り成形工程での型決まり性が悪くなったりする。 The content of the aliphatic unsaturated carboxylic acid ester unit in the polybranched polystyrene is preferably 0.5 to 3.5% by mass, and 0.6 to 3% by mass, based on 100% by mass of the total styrene resin. It is more preferably 3% by mass, and even more preferably 0.9 to 2.5% by mass. If it is less than 0.5% by mass, the deep drawing property is insufficient, and if it is more than 3.5% by mass, the thickness unevenness of the film becomes large in the process of forming the film, or the mold in the deep drawing forming process. The regularity gets worse.
本実施形態における熱可塑性樹脂は、熱ラミネート用途の観点より、線状ポリスチレンと多分岐状ポリスチレンとを含有するスチレン系樹脂組成物（混合系のスチレン系樹脂）とすることが好ましい。
スチレン系樹脂組成物中の線状ポリスチレンと多分岐状ポリスチレンとの質量比（線状ポリスチレン：多分岐状ポリスチレン）は、９９．５：０．５〜７０：３０の範囲が好ましく、９５：５〜７５：２５の範囲が更に好ましい。多分岐状ポリスチレンの質量比が０．５未満であると、深絞り成形する工程でフィルムが切れ易くなる。また、多分岐状ポリスチレンの質量比が３０を超えると、フィルムに製膜する工程でフィルムの厚み斑が大きくなったり、深絞り成形工程での型決まり性や成形品の偏肉が悪くなったりする。
The thermoplastic resin in the present embodiment is preferably a styrene resin composition (mixed styrene resin) containing linear polystyrene and multibranched polystyrene from the viewpoint of thermal lamination.
The mass ratio of linear polystyrene to multi-branched polystyrene (linear polystyrene: multi-branched polystyrene) in the styrene resin composition is preferably in the range of 99.5: 0.5 to 70:30, and is 95: 5. The range of ~ 75:25 is more preferable. If the mass ratio of the polybranched polystyrene is less than 0.5, the film is likely to be cut in the deep drawing process. Further, when the mass ratio of the multi-branched polystyrene exceeds 30, the thickness unevenness of the film becomes large in the process of forming the film, the moldability in the deep drawing molding process and the uneven thickness of the molded product deteriorate. To do.
また、上記スチレン系樹脂組成物は、フィルムに製膜する際の安定性、フィルムの深絞り性等の特性を改善する観点より、スチレン−ブタジエン共重合体、ハイインパクトポリスチレン、及びスチレン−ブタジエン−スチレン系樹脂からなる群より選ばれる少なくとも１種の耐衝撃性ポリスチレンを含むことが好ましく、ハイインパクトポリスチレン及びスチレン−ブタジエン−スチレン系樹脂を含むことが特に好ましい。 Further, the styrene-based resin composition is a styrene-butadiene copolymer, high-impact polystyrene, and styrene-butadiene- from the viewpoint of improving characteristics such as stability during film formation and deep drawability of the film. It is preferable to contain at least one impact-resistant polystyrene selected from the group consisting of styrene-based resins, and it is particularly preferable to contain high-impact polystyrene and styrene-butadiene-styrene-based resins.
上記スチレン系樹脂組成物が上記耐衝撃性ポリスチレンの少なくとも１種を含む場合の耐衝撃性ポリスチレンの合計含有量は、スチレン系樹脂組成物１００質量％に対して、０．５〜１５質量％が好ましく、１〜１０質量％がより好ましく、３〜７質量％が更に好ましい。０．５質量％以上含む場合、フィルムの製膜安定性や滑り性が改善され、１５質量％以下の場合はフィルムの透明性、光沢、フィルムの腰（スティフネス）が保たれる。 When the styrene resin composition contains at least one of the impact resistant polystyrenes, the total content of the impact resistant polystyrenes is 0.5 to 15% by mass with respect to 100% by mass of the styrene resin composition. Preferably, 1 to 10% by mass is more preferable, and 3 to 7% by mass is further preferable. When it contains 0.5% by mass or more, the film-forming stability and slipperiness of the film are improved, and when it contains 15% by mass or less, the transparency, gloss and stiffness of the film are maintained.
本実施形態における熱可塑性樹脂の含有量としては、高輝性樹脂組成物を１００質量％として、８０質量％以上、８５質量％以上、９０質量％以上としてよく、また、１００質量％未満、９７質量％以下、９５質量％以下としてよい。 The content of the thermoplastic resin in the present embodiment may be 80% by mass or more, 85% by mass or more, 90% by mass or more, and less than 100% by mass, 97% by mass, with the high-luminance resin composition as 100% by mass. % Or less, 95% by mass or less.
＜＜鱗片状顔料＞＞
本実施形態における鱗片状顔料は、一般に高輝顔料やパール顔料として市販されている鱗片状のものを使用することができる。
鱗片状顔料としては、二酸化チタンや酸化鉄等の金属酸化物や無機物により被覆された、平板状マイカ粒子、フレーク状ガラス、アルミ粉等が挙げられ、このうち１種を単独で、又は２種以上の混合により使用することができる。
これらのうち、二酸化チタンにより被覆された平板状マイカ粒子やフレーク状ガラスが好ましく、二酸化チタンにより被覆された平板状合成マイカ粒子がより好ましい。
かかる鱗片状顔料としては、例えば、日本光研工業製の「ツインクルパール／ＴＷＩＮＣＬＥＰＥＡＲＬ」「パールグレイズ／ＰＥＡＲＬ−ＧＬＡＺＥ」、「アルティミカ／ＵＬＴＩＭＩＣＡ」、「プロミネンス／ＰＲＯＭＩＮＥＮＣＥ」、「ジェネスター／ＧＥＮＥＳＴＡＲ」、メルク製「イリオジン／Ｉｒｉｏｄｉｎ」、ＢＡＳＦ製「マグナパール／ＭａｇｎａＰｅａｒｌ」、トピー工業製「ＰＤＭ」、日本板硝子製「メタシャイン／ＭＥＴＡＳＨＡＩＮＥ」等を挙げることができる。
これらの二酸化チタンにより被覆された平板状マイカ粒子を用いる場合、二酸化チタン表面にコーティングを施したものを用いてもよい。このコーティングは、例えば二酸化チタンによる光触媒作用を抑えるため、又は樹脂への分散性を高める目的で行うことができる。
<< reptile pigment >>
As the reptile pigment in the present embodiment, a reptile pigment commercially available as a high-intensity pigment or a pearl pigment can be used.
Examples of the scaly pigment include flat mica particles, flake-shaped glass, aluminum powder, etc. coated with a metal oxide such as titanium dioxide or iron oxide or an inorganic substance, and one of them may be used alone or two of them may be used. It can be used by mixing the above.
Of these, flat plate-shaped mica particles coated with titanium dioxide and flake-shaped glass are preferable, and flat plate-shaped synthetic mica particles coated with titanium dioxide are more preferable.
Examples of such scaly pigments include "Twinkle Pearl", "Pearl Glaze / PEARL-GLaze", "Ultimica / ULTIMICA", "Prominence / PROMINENCE", "GENESTAR", and Merck manufactured by Nippon Koken Kogyo. Examples thereof include "Iriodin" manufactured by BASF, "MagnaPearl" manufactured by BASF, "PDM" manufactured by Topy Industries, and "METASHAINE" manufactured by Nippon Sheet Glass.
When the flat mica particles coated with these titanium dioxides are used, those having a coating on the surface of titanium dioxide may be used. This coating can be performed, for example, to suppress the photocatalytic action of titanium dioxide or to improve the dispersibility in the resin.
鱗片状顔料のアスペクト比は、鱗片状顔料の平均粒径と平均厚みとの比（平均粒径／平均厚み）で表され、３以上としてよく、下限は、好ましくは５以上、１０以上、２０以上でもよく、上限は、好ましくは１００以下、９５以下、８５以下、７０以下、５０以下でもよい。
本実施形態において、アスペクト比が３未満の場合は、フィルムにした際にキラキラした光沢に劣る場合がある。
The aspect ratio of the scaly pigment is represented by the ratio of the average particle size to the average thickness of the scaly pigment (average particle size / average thickness) and may be 3 or more, and the lower limit is preferably 5 or more, 10 or more, 20 The upper limit may be 100 or less, 95 or less, 85 or less, 70 or less, and 50 or less.
In the present embodiment, when the aspect ratio is less than 3, the glossiness of the film may be inferior.
鱗片状顔料の粒度分布は、０．５〜６００μｍの範囲内としてよく、下限は、好適には、１μｍ以上、１０μｍ以上としてよく、上限は、好適には、４５０μｍ以下、３００μｍ以下、１５０μｍ以下としてよい。鱗片状顔料の粒度分布の下限が０．５μｍ未満であると、光拡散性は向上するが、光反射効果による高輝性が不足する可能性があり、また、粒度分布の上限が６００μｍを超えると、フィルム製膜時に破断が多発する等生産性に劣ったものとなる可能性がある。また、鱗片状顔料の粒度分布を０．５〜６００μｍの範囲とすれば、キラキラした粒子感がある高輝性が得られやすい。
なお、粒度分布は、ＪＩＳ Ｚ８８２５に準拠したレーザー回折・散乱法により、レーザー回折式粒度分布測定装置を用いて、体積分布で得たものをいう。
The particle size distribution of the reptile pigment may be in the range of 0.5 to 600 μm, the lower limit may be preferably 1 μm or more and 10 μm or more, and the upper limit may be preferably 450 μm or less, 300 μm or less, 150 μm or less. Good. If the lower limit of the particle size distribution of the scaly pigment is less than 0.5 μm, the light diffusivity is improved, but the high brightness due to the light reflection effect may be insufficient, and if the upper limit of the particle size distribution exceeds 600 μm. , There is a possibility that the productivity will be inferior, such as frequent breakage during film formation. Further, if the particle size distribution of the scaly pigment is in the range of 0.5 to 600 μm, it is easy to obtain high brilliance with a glittering grain feeling.
The particle size distribution is obtained by volume distribution using a laser diffraction type particle size distribution measuring device by a laser diffraction / scattering method based on JIS Z8825.
鱗片状顔料の平均粒径は、１０〜１００μｍの範囲内としてよく、下限は、好適には、１０μｍ以上、２０μｍ以上としてよく、上限は、好適には、８５μｍ以下、７０μｍ以下、５５μｍ以下、４０μｍ以下としてもよい。鱗片状顔料の平均粒径が１０μｍ未満であると、光拡散性は向上するが、光反射効果による高輝性が不足する可能性があり、また、平均粒径が１００μｍを超えると、フィルム製膜時に破断が多発する等生産性に劣ったものとなる可能性がある。
なお、平均粒径とは、ＪＩＳ Ｚ８８２５に準拠したレーザー回折・散乱法により、レーザー回折式粒度分布測定装置を用いて、体積分布で得たものをいい、個々の粒子を球状粒子に換算して求めたメディアン径（ｄ５０）をいう。
The average particle size of the reptile pigment may be in the range of 10 to 100 μm, the lower limit may be preferably 10 μm or more and 20 μm or more, and the upper limit is preferably 85 μm or less, 70 μm or less, 55 μm or less, 40 μm. It may be as follows. If the average particle size of the scaly pigment is less than 10 μm, the light diffusivity is improved, but the high brightness due to the light reflection effect may be insufficient, and if the average particle size exceeds 100 μm, the film is formed. Occasionally, the productivity may be inferior due to frequent breakage.
The average particle size is obtained by volume distribution using a laser diffraction type particle size distribution measuring device by a laser diffraction / scattering method based on JIS Z8825, and individual particles are converted into spherical particles. It means the obtained median diameter (d50).
かかる鱗片状顔料の平均厚みは、０．０１〜１０μｍであることが好ましい。平均厚みが０．０１μｍ未満であると、十分な光反射特性が得られ難く、また、製膜工程において鱗片状顔料が折損しやすくなる可能性がある。他方、平均厚みが１０μｍを超えると、板状の特徴が失われやすく、反射特性が低下する可能性がある。 The average thickness of the reptile pigment is preferably 0.01 to 10 μm. If the average thickness is less than 0.01 μm, it is difficult to obtain sufficient light reflection characteristics, and the reptile pigment may be easily broken in the film forming process. On the other hand, if the average thickness exceeds 10 μm, the plate-like characteristics are likely to be lost, and the reflection characteristics may deteriorate.
鱗片状顔料の含有量は、熱可塑性樹脂を１００質量％として、０．０１〜１質量％であり、好ましくは０．０５〜０．５質量％であり、より好ましくは０．１〜０．４質量％である。含有量が０．０１質量％より多いと光反射による光彩効果が出やすく、１質量％を超えると樹脂組成物の透明性に劣る。 The content of the scaly pigment is 0.01 to 1% by mass, preferably 0.05 to 0.5% by mass, more preferably 0.1 to 0%, based on 100% by mass of the thermoplastic resin. It is 4% by mass. If the content is more than 0.01% by mass, a glow effect due to light reflection is likely to occur, and if it exceeds 1% by mass, the transparency of the resin composition is inferior.
＜＜微粒子顔料＞＞
本実施形態には更に微粒子顔料を含んでもかまわない。微粒子顔料を併用することで、見る角度が変わった場合でも高輝性が得られる効果（フリップフロップ効果）がある。
微粒子顔料としては、微粒子酸化チタン、微粒子酸化亜鉛、微粒子酸化スズ、微粒子酸化セリウムが挙げられ、このうち１種を単独で、又は２種以上の混合により使用することができる。これらのうち、微粒子酸化チタンが好ましい。
<< Fine particle pigment >>
The present embodiment may further contain fine particle pigments. By using the fine particle pigment together, there is an effect (flip-flop effect) that high brightness can be obtained even when the viewing angle is changed.
Examples of the fine particle pigment include fine particle titanium oxide, fine particle zinc oxide, fine particle tin oxide, and fine particle cerium oxide, and one of them can be used alone or by mixing two or more kinds. Of these, fine particle titanium oxide is preferable.
そして、微粒子顔料の平均粒径は、１０〜１５０ｎｍが好ましく、より好ましくは１０〜６０ｎｍであり、更に好ましくは３０〜５０ｎｍである。ここでは、平均粒径が更に細かい方が、光彩効果が高く特に良い傾向がある。また、微粒子顔料の平均粒径を１０〜１５０ｎｍの範囲とすれば、フリップフロップ効果が得られやすい。
なお、平均粒径とは、一次粒子の平均粒径をいう。
また、平均粒径とは、ＪＩＳ Ｚ８８２８に準拠した動的光散乱法により求めた平均粒子径ＸDLSをいう。
The average particle size of the fine particle pigment is preferably 10 to 150 nm, more preferably 10 to 60 nm, and further preferably 30 to 50 nm. Here, the finer the average particle size, the higher the brilliant effect and the better. Further, if the average particle size of the fine particle pigment is in the range of 10 to 150 nm, the flip-flop effect can be easily obtained.
The average particle size means the average particle size of the primary particles.
The average particle size means the average particle size X DLS obtained by a dynamic light scattering method based on JIS Z8828.
微粒子顔料としては、市販各種のものが有効である。 As the fine particle pigment, various commercially available pigments are effective.
微粒子酸化チタンとして、石原産業製ＴＴＯ−５１、５５シリーズ、テイカ製ＭＴシリーズが、また、微粒子酸化亜鉛として、ハクスイテック製ジンクオックススーパーＦシリーズが、成分・形状とも安定して供給される例として挙げられる。 As examples of fine particle titanium oxide, TTO-51, 55 series manufactured by Ishihara Sangyo and MT series manufactured by TAYCA, and as fine particle zinc oxide, Zincox Super F series manufactured by HakusuiTech are given as examples in which both components and shapes are stably supplied. Be done.
微粒子顔料の含有量は、熱可塑性樹脂を１００質量％として、０．０１〜０．１質量％が好ましく、０．０１〜０．０７質量％がより好ましく、０．０１〜０．０５質量％が更に好ましい。含有量が０．０１質量％より多いと光散乱による光彩効果が出やすく、０．１質量％を超えると樹脂組成物の透明性に劣る。 The content of the fine particle pigment is preferably 0.01 to 0.1% by mass, more preferably 0.01 to 0.07% by mass, and 0.01 to 0.05% by mass, with the thermoplastic resin as 100% by mass. Is more preferable. If the content is more than 0.01% by mass, a glow effect due to light scattering is likely to occur, and if it exceeds 0.1% by mass, the transparency of the resin composition is inferior.
本実施形態では、前記鱗片状顔料の前記微粒子顔料に対する（鱗片状顔料／微粒子顔料）割合（質量）は、１０／１〜１００／１の範囲であれば、高輝性樹脂組成物の透明性が良好で光反射による光沢性が改善された優れた光彩効果が得られ易く、好ましい。この質量割合は、より好ましくは２０／１〜１００／１であり、特に好ましくは２０／１〜５０／１である。鱗片状顔料／微粒子顔料の割合（質量）が１０／１より小さいと透明性と光沢性に劣り、１００／１より大きいと光沢性に劣る場合がある。 In the present embodiment, if the ratio (mass) of the scaly pigment to the fine particle pigment (scaly pigment / fine particle pigment) is in the range of 10/1 to 100/1, the transparency of the highly bright resin composition is high. It is preferable because it is easy to obtain an excellent glow effect that is good and has improved glossiness due to light reflection. This mass ratio is more preferably 20/1 to 100/1, and particularly preferably 20/1 to 50/1. If the ratio (mass) of the scaly pigment / fine particle pigment is less than 10/1, the transparency and glossiness may be inferior, and if it is larger than 100/1, the glossiness may be inferior.
本実施形態の高輝性樹脂フィルムを構成する高輝性樹脂組成物は、前記の樹脂と鱗片状顔料とを混合し、任意の混練機、例えば、押出機等で混練し、ペレット状、フレーク状、粉状の組成物として得られる。マスターバッチ等、顔料成分の濃度の高い物を中間に作成し、通常の通り、それを更に薄めて使ってもよい。 The high-brightness resin composition constituting the high-brightness resin film of the present embodiment is obtained by mixing the above resin and a scaly pigment and kneading them with an arbitrary kneader, for example, an extruder, and then pellet-like, flake-like, or the like. Obtained as a powdery composition. A material having a high concentration of pigment components such as a masterbatch may be prepared in the middle, and it may be further diluted and used as usual.
＜＜各種添加剤＞＞
なお、必要に応じて本実施形態の高輝性樹脂フィルムには、顔料分散剤、紫外線吸収剤、光安定剤、酸化防止剤、難燃剤、帯電防止剤、スリップ剤、無機フィラー等、透明性と光沢性を阻害しない範囲で各種添加剤の添加が可能である。
本実施形態における各種添加剤の含有量としては、熱可塑性樹脂（１００質量％）に対して１０質量％以下としてよく、好ましくは１質量％以下である。
<< Various additives >>
If necessary, the high-brightness resin film of the present embodiment may be provided with transparency such as a pigment dispersant, an ultraviolet absorber, a light stabilizer, an antioxidant, a flame retardant, an antistatic agent, a slip agent, and an inorganic filler. Various additives can be added as long as the glossiness is not impaired.
The content of various additives in the present embodiment may be 10% by mass or less, preferably 1% by mass or less, based on the thermoplastic resin (100% by mass).
＜高輝性樹脂フィルムの製造方法＞
本実施形態の高輝性樹脂フィルムは、熱可塑性樹脂と本発明の鱗片状顔料を溶融・混練してＴ−ダイからシート状に押出した後、同時二軸延伸あるいは逐次二軸延伸する方法、溶融・混練して円筒状ダイから筒状に押出した後、バブル延伸（インフレーション）する方法等の公知の製造方法を採用して得ることができる。
<Manufacturing method of high-brightness resin film>
The high-brightness resin film of the present embodiment is a method of melting and kneading a thermoplastic resin and a scaly pigment of the present invention, extruding them into a sheet from a T-die, and then simultaneously biaxially stretching or sequentially biaxially stretching, melting. -It can be obtained by adopting a known manufacturing method such as a method of kneading, extruding into a cylinder from a cylindrical die, and then bubble stretching (inflation).
このような成形方法で成形した成形体のフィルムは、例えば、容器用途に使用される場合裏刷り印刷の視認性の観点から、透明性の指標となるヘイズ値（曇度）が２５μｍ厚フィルム状態で５％超にならないように、原料組成物の混合割合を設定することが望まれる。
このヘイズ値は、高輝性樹脂組フィルムの厚みが変化した場合、更に、フィルムが積層されている場合の評価が困難であるが、ヘイズ値測定サンプルの厚みとヘイズ値との間に比例関係を有することより、本実施形態の成形体で規定するヘイズ値は、この厚みに対するヘイズ値（％）、即ち厚み換算された換算ヘイズ値（％）により特定される。
The film of the molded product molded by such a molding method is in a film state in which the haze value (cloudiness), which is an index of transparency, is 25 μm thick, for example, from the viewpoint of visibility of back printing when used for container applications. It is desirable to set the mixing ratio of the raw material composition so that it does not exceed 5%.
This haze value is difficult to evaluate when the thickness of the high-brightness resin film is changed, and when the films are laminated, but there is a proportional relationship between the thickness of the haze value measurement sample and the haze value. The haze value defined by the molded product of the present embodiment is specified by the haze value (%) with respect to the thickness, that is, the converted haze value (%) converted to the thickness.
本実施形態の高輝性樹脂フィルムは、その透明性の観点から、２５μｍ厚みに換算された換算ヘイズ値（Ｈ２５）が５％以下であることが好ましく、好ましくは４％以下、より好ましくは３％以下、更に好ましくは２％以下である。Ｈ２５の下限は、特に限定されないが、０％以上であることが好ましく、より好ましくは０．０１％以上である。
ここで、換算ヘイズ値（Ｈ２５）とは、あらかじめ厚みを測定したシート状成形体（フィルム）の試験片サンプルのヘイズ値（Ｈ）を厚み２５μｍの樹脂フィルムとした場合の換算値のことであり、下記式により求めることができる。
Ｈ２５（％）＝Ｈ（％）×２５（μｍ）／ｄ（μｍ）
ここで、
Ｈ２５：２５μｍ厚み換算した換算ヘイズ値（％）
Ｈ：ヘイズの実測値（％）
ｄ：ヘイズ測定部のシート状成形体（フィルム）の厚み（μｍ）
である。
なお、本実施形態の成形体で測定されるヘイズ値は、ＪＩＳ−Ｋ−７１３６法に準拠して測定される値である。
From the viewpoint of transparency, the high-brightness resin film of the present embodiment preferably has a converted haze value (H25) converted to a thickness of 25 μm of 5% or less, preferably 4% or less, and more preferably 3%. Below, it is more preferably 2% or less. The lower limit of H25 is not particularly limited, but is preferably 0% or more, and more preferably 0.01% or more.
Here, the converted haze value (H25) is a converted value when the haze value (H) of the test piece sample of the sheet-shaped molded product (film) whose thickness has been measured in advance is a resin film having a thickness of 25 μm. , Can be calculated by the following formula.
H25 (%) = H (%) x 25 (μm) / d (μm)
here,
H25: Converted haze value (%) converted to 25 μm thickness
H: Measured value of haze (%)
d: Thickness (μm) of the sheet-shaped molded body (film) of the haze measuring part
Is.
The haze value measured in the molded product of the present embodiment is a value measured in accordance with the JIS-K-7136 method.
本実施形態の高輝性樹脂フィルムの厚みは、１０〜２００μｍが好ましく、１０〜１００μｍがより好ましく、１０〜８０μｍがさらにより好ましく、１５〜５０μｍが特に好ましい。
フィルムの厚みが、１０〜２００μｍであると、ループステフネス（東洋精機製作所製ループステフネステスタ測定値）の値が、積層シートに使用される、熱ラミネート用フィルムとして取扱う上で好適な腰の強さ（曲げ弾性）に相当する１〜５０ｇｆを示す。フィルム厚みが２００μｍを超えるとフィルムの剛性が強いためにラミネート、印刷、成形の際に取り扱い上の問題が発生する場合がある。また、フィルム厚みが、大きい場合には問題とならないが、１００μｍ未満の場合には、後述の表面粗さが大きくなる場合があり、キラキラした高輝性が低下するので表面粗さを小さくすることが求められる。
また、フィルム厚みが１０〜１００μｍであると、透明性（ヘイズ）に優れるため好ましい。より好ましくは１０〜８０μｍで、更に好ましくは１０〜５０μｍである。透明性と腰の強さ（曲げ弾性率）の両方を満足するためには、例えば、スチレン系樹脂フィルムであれば１０〜５０μｍが好ましく用いられる。
The thickness of the high-luminance resin film of the present embodiment is preferably 10 to 200 μm, more preferably 10 to 100 μm, even more preferably 10 to 80 μm, and particularly preferably 15 to 50 μm.
When the thickness of the film is 10 to 200 μm, the value of loop stefness (measured value of loop stef nestester manufactured by Toyo Seiki Seisakusho) is suitable for handling as a film for thermal laminating used for laminated sheets. It shows 1 to 50 gf corresponding to the strength (bending elasticity). If the film thickness exceeds 200 μm, the rigidity of the film is so strong that handling problems may occur during laminating, printing, and molding. Further, when the film thickness is large, it does not matter, but when it is less than 100 μm, the surface roughness described later may be increased, and the glittering high brilliance is lowered, so that the surface roughness can be reduced. Desired.
Further, when the film thickness is 10 to 100 μm, the transparency (haze) is excellent, which is preferable. It is more preferably 10 to 80 μm, still more preferably 10 to 50 μm. In order to satisfy both transparency and waist strength (flexural modulus), for example, 10 to 50 μm is preferably used for a styrene resin film.
本実施形態の高輝性樹脂フィルムは、少なくとも一方の面の算術平均粗さ（Ｒａ）が０．１〜５．０が好ましい。０．１〜４．０であると更に好ましく、０．１〜３．５であるとより好ましい。５．０を超えると高輝性が損なわれる場合がある。０．１未満であると高輝性には優れるものの、印刷等のフィルム取扱い時に、しわの発生等のトラブルが発生する場合がある。 The high-brightness resin film of the present embodiment preferably has an arithmetic mean roughness (Ra) of at least one surface of 0.1 to 5.0. It is more preferably 0.1 to 4.0, and more preferably 0.1 to 3.5. If it exceeds 5.0, the high brightness may be impaired. If it is less than 0.1, the high brightness is excellent, but troubles such as wrinkles may occur when handling the film such as printing.
また、本実施形態の高輝性樹脂フィルムは、容器表面と反対側の面となるフィルム側に裏刷り印刷してもよい。裏刷り印刷の方法としては、一般的な方法を使用することができ、グラビアロール印刷、フレキソ印刷、オフセット印刷等が挙げられる。 Further, the high-brightness resin film of the present embodiment may be back-printed on the film side, which is the surface opposite to the container surface. As a method of back printing, a general method can be used, and examples thereof include gravure roll printing, flexographic printing, and offset printing.
＜高輝性樹脂積層フィルム＞
本実施形態の高輝性樹脂積層フィルムは、上述の本実施形態の高輝性樹脂フィルムに加えて、熱可塑性樹脂を含み鱗片状顔料を含まない他のフィルムを含んでもかまわない。
なお、フィルムが鱗片状顔料を「含まない」とは、他のフィルムにおける鱗片状顔料の含有量が０．００１質量％以下であることをいう。
<High brightness resin laminated film>
The high-brightness resin laminated film of the present embodiment may include another film containing a thermoplastic resin and not a scaly pigment in addition to the high-brightness resin film of the present embodiment described above.
In addition, "the film does not contain the reptile pigment" means that the content of the reptile pigment in other films is 0.001% by mass or less.
なお、本実施形態の高輝性樹脂積層フィルムは、上述の本実施形態の高輝性樹脂フィルムを１枚含むものとしてもよく、複数枚含むものとしてもよい。 The high-intensity resin laminated film of the present embodiment may include one or a plurality of the high-intensity resin films of the present embodiment described above.
また、本実施形態の高輝性樹脂積層フィルムは、上述の他のフィルム以外に、所望の特性を備える別のフィルムを含んでもかまわない。別のフィルムは、高輝性樹脂フィルムに関して、上述の他のフィルムが積層される側と同じ側に積層されてもよく、上述の他のフィルムが積層される側と反対側に積層されてもよい。 Further, the high-brightness resin laminated film of the present embodiment may include another film having desired characteristics in addition to the other films described above. Another film may be laminated on the same side as the side on which the above-mentioned other film is laminated, or may be laminated on the side opposite to the side on which the above-mentioned other film is laminated with respect to the high-luminance resin film. ..
本実施形態では、例えば、熱可塑性樹脂と鱗片状顔料よりなる高輝性樹脂フィルムの一方の面に鱗片状顔料を含まない熱可塑性樹脂からなるフィルムをラミネートにより積層してもかまわない。鱗片状顔料を含まないフィルムを積層することにより高輝性樹脂積層フィルムの表面粗さ（Ｒａ）が小さくなりキラキラした高輝性がより向上するので好ましい。
また、本実施形態では、例えば、熱可塑性樹脂と鱗片状顔料よりなる層と、鱗片状顔料を含まない熱可塑性樹脂よりなる層とを共押出により成形された多層フィルムとしてもかまわない。共押出により成形することでフィルム製造コスト低減と高輝性向上の両方が満足されるので好ましい。
In the present embodiment, for example, a film made of a thermoplastic resin containing no scaly pigment may be laminated on one surface of a high-luminance resin film made of a thermoplastic resin and a scaly pigment. Laminating a film that does not contain a scaly pigment is preferable because the surface roughness (Ra) of the high-brightness resin laminated film is reduced and the glittering high-brightness is further improved.
Further, in the present embodiment, for example, a multilayer film formed by coextrusion of a layer made of a thermoplastic resin and a scaly pigment and a layer made of a thermoplastic resin containing no scaly pigment may be used. Molding by coextrusion is preferable because both reduction in film production cost and improvement in high brightness are satisfied.
本実施形態の高輝性樹脂積層フィルム、についての２５μｍ厚みに換算された換算ヘイズ値（Ｈ２５）は５％以下であることが好ましく、他の点についても本実施形態の高輝性樹脂フィルムについての２５μｍ厚みに換算された換算ヘイズ値（Ｈ２５）と同様としてよい。
本実施形態の高輝性樹脂積層フィルムについてのフィルムの厚みは１０〜２００μｍであることが好ましく、他の点についても本実施形態の高輝性樹脂フィルムについてのフィルムの厚みと同様としてよい。
本実施形態の高輝性樹脂積層フィルムについての表面粗さ（Ｒａ）は、本実施形態の高輝性樹脂フィルムについての表面粗さ（Ｒａ）と同様に、０．１〜５．０であることが好ましく、他の点についても本実施形態の高輝性樹脂フィルムについての表面粗さ（Ｒａ）と同様としてよい。
The converted haze value (H25) converted to a thickness of 25 μm for the high-brightness resin laminated film of the present embodiment is preferably 5% or less, and 25 μm for the high-brightness resin film of the present embodiment in other respects. It may be the same as the converted haze value (H25) converted into the thickness.
The film thickness of the high-brightness resin laminated film of the present embodiment is preferably 10 to 200 μm, and other points may be the same as the film thickness of the high-brightness resin film of the present embodiment.
The surface roughness (Ra) of the high-brightness resin laminated film of the present embodiment may be 0.1 to 5.0, which is the same as the surface roughness (Ra) of the high-brightness resin film of the present embodiment. Preferably, other points may be the same as the surface roughness (Ra) of the high-brightness resin film of the present embodiment.
本実施形態では、本実施形態の高輝性樹脂フィルム、他のフィルム、別のフィルムはそれぞれ、本実施形態の高輝性樹脂積層フィルムにおいて独立に層を形成していてよい。 In the present embodiment, the high-brightness resin film of the present embodiment, another film, and another film may each independently form a layer in the high-brightness resin laminated film of the present embodiment.
＜高輝性樹脂積層シート＞
本実施形態における積層シートは、例えば、上述の高輝性樹脂フィルム又は上述の高輝性樹脂積層フィルムと熱可塑性樹脂発泡体とが積層されているシートである。
ここで、積層する前に、高輝性樹脂フィルム（又は高輝性樹脂積層フィルム）上に印刷することで印刷インキ層を設けて、高輝性樹脂フィルム（又は高輝性樹脂積層フィルム）、印刷インキ層、熱可塑性樹脂発泡体が、この順番になるように積層することが好ましい。高輝性樹脂フィルム（又は高輝性樹脂積層フィルム）側から見た際に、高い印刷視認性とキラキラした高輝性及び印刷の上に粒子が浮かんだような立体感が得られるので好ましい。この場合、好適に使用される積層方法は、一般的な熱ラミネート方法が挙げられる。
また、高輝性樹脂フィルム（又は高輝性樹脂積層フィルム）の表面粗さ（Ｒａ）が表裏で異なる場合には、表面粗さ（Ｒａ）の小さい面が最表面となるように積層することが好ましい。
<Highly bright resin laminated sheet>
The laminated sheet in the present embodiment is, for example, a sheet in which the above-mentioned high-brightness resin film or the above-mentioned high-brightness resin laminated film and a thermoplastic resin foam are laminated.
Here, a printing ink layer is provided by printing on a high-brightness resin film (or high-brightness resin laminated film) before laminating, and a high-brightness resin film (or high-brightness resin laminated film), a printing ink layer, It is preferable that the thermoplastic resin foams are laminated in this order. When viewed from the high-brightness resin film (or high-brightness resin laminated film) side, high print visibility, glittering high-brightness, and a three-dimensional effect as if particles are floating on the print are obtained, which is preferable. In this case, as a preferably used laminating method, a general thermal laminating method can be mentioned.
When the surface roughness (Ra) of the high-brightness resin film (or high-brightness resin laminated film) is different on the front and back sides, it is preferable to laminate so that the surface having the small surface roughness (Ra) is the outermost surface. ..
本実施形態において好適に用いられるスチレン系樹脂を用いた高輝性樹脂フィルム（又は高輝性樹脂積層フィルム）と積層される熱可塑性樹脂発泡体としては、スチレン系樹脂発泡体が好ましい。
スチレン系樹脂発泡体は、スチレン系樹脂をベースとした発泡体であり、形状及び大きさは任意である。
As the thermoplastic resin foam laminated with the high-brightness resin film (or high-brightness resin laminated film) using the styrene-based resin preferably used in the present embodiment, the styrene-based resin foam is preferable.
The styrene resin foam is a foam based on the styrene resin, and the shape and size are arbitrary.
高輝性樹脂積層シートの厚みは、１〜４ｍｍが好ましく、２〜３ｍｍがより好ましい。積層シートの厚みが１〜４ｍｍであると、加熱することで容易に容器等に加工することができる。 The thickness of the high-brightness resin laminated sheet is preferably 1 to 4 mm, more preferably 2 to 3 mm. When the thickness of the laminated sheet is 1 to 4 mm, it can be easily processed into a container or the like by heating.
本実施形態における高輝性樹脂積層シートは、上述の高輝性樹脂フィルムの片面を樹脂発泡体に熱圧着することにより得られる。熱圧着法としては、一般的な方法を使用することができ、例えば、温度１５０〜２５０℃の熱圧着ローラーを装備した熱ラミネート機でラミネートする方法等が挙げられる。 The high-brightness resin laminated sheet in the present embodiment is obtained by thermocompression bonding one side of the high-brightness resin film described above to a resin foam. As the thermocompression bonding method, a general method can be used, and examples thereof include a method of laminating with a thermocompression bonding machine equipped with a thermocompression bonding roller having a temperature of 150 to 250 ° C.
本実施形態の高輝性樹脂フィルム（又は高輝性樹脂積層フィルム）の片面には、印刷により印刷インキ層を設けてもかまわない。印刷の方法としては、一般的な方法を使用することができ、グラビアロール印刷、フレキソ印刷、オフセット印刷等が挙げられる。本実施形態に好適に用いられるスチレン系樹脂を用いた高輝性樹脂フィルムに印刷を行う場合は、トルエン、キシレン等の溶剤を含まない水性インキの使用が好ましい。 A printing ink layer may be provided on one side of the high-brightness resin film (or high-brightness resin laminated film) of the present embodiment by printing. As a printing method, a general method can be used, and examples thereof include gravure roll printing, flexographic printing, and offset printing. When printing on a high-brightness resin film using a styrene-based resin preferably used in this embodiment, it is preferable to use a water-based ink that does not contain a solvent such as toluene or xylene.
＜容器＞
本実施形態における容器は、上述の高輝性樹脂積層シートを金型を用いて熱成形することにより得られる。
本実施形態の容器は、優れたフィルム透明性及びフィルム表面の滑り性を有する本実施形態の高輝性樹脂フィルムと熱可塑性樹脂発泡体とを含む高輝性樹脂積層シートを成形することにより、優れた印刷視認性、蓋嵌合及び開封の包装適性を兼ね備える。そのため、本実施形態の容器は、食品用容器、飲料用容器、カップ麺容器等の用途に好適に使用することができる。
本実施形態の容器の製造方法としては、真空成形、圧縮成形、真空圧空成形等の一般的な熱成形方法を用いることができる。中でも、真空成形が好ましく、温度条件としては、特に限定されないが、スチレン系樹脂を用いた容器の場合、２５０〜３００℃が好ましい。
<Container>
The container in the present embodiment is obtained by thermoforming the above-mentioned high-luminance resin laminated sheet using a mold.
The container of the present embodiment is excellent by molding a high-brightness resin laminated sheet containing the high-brightness resin film of the present embodiment and the thermoplastic resin foam, which has excellent film transparency and slipperiness of the film surface. It has print visibility, lid fitting, and packaging suitability for opening. Therefore, the container of the present embodiment can be suitably used for applications such as food containers, beverage containers, and cup noodle containers.
As a method for manufacturing the container of the present embodiment, a general thermoforming method such as vacuum forming, compression molding, or vacuum pressure air forming can be used. Among them, vacuum forming is preferable, and the temperature condition is not particularly limited, but in the case of a container using a styrene resin, 250 to 300 ° C. is preferable.
＜包装体＞
本実施形態における包装体は、上述の本実施形態の容器と当該容器に嵌合することが可能な蓋とを含む。
本実施形態の包装体は、優れたフィルム透明性及び光沢性を有する本実施形態の高輝性樹脂フィルムと熱可塑性発泡体とを含む容器で構成されることにより、優れた印刷視認性とキラキラした高輝性を有し、蓋の嵌合及び開封を容易に行うことができる。そのため、本実施形態の包装体は、食品用容器、飲料用容器、カップ麺容器等の用途に好適に使用することができる。
<Packaging body>
The package of the present embodiment includes the container of the present embodiment described above and a lid that can be fitted to the container.
The package of the present embodiment is composed of a container containing the high-brightness resin film of the present embodiment having excellent film transparency and gloss and a thermoplastic foam, thereby providing excellent print visibility and glitter. It has high brilliance, and the lid can be easily fitted and opened. Therefore, the package of the present embodiment can be suitably used for applications such as food containers, beverage containers, and cup noodle containers.
以上、本発明の高輝性樹脂フィルム等の実施形態について例示説明したが、上記実施形態には、適宜変更を加えることができ、本発明の高輝性樹脂フィルム等は、上記例示の実施形態に限定されることはない。 Although the embodiments of the high-brightness resin film and the like of the present invention have been exemplified above, the high-brightness resin film and the like of the present invention can be appropriately modified and the high-brightness resin film and the like of the present invention are limited to the above-exemplified embodiments. Will not be done.
以下、実施例及び比較例を挙げて本発明の内容をより具体的に説明する。なお、本発明はこれらの実施例に限定されるものではない。 Hereinafter, the contents of the present invention will be described more specifically with reference to Examples and Comparative Examples. The present invention is not limited to these examples.
＜材料＞
実施例及び比較例で使用した材料は以下のとおりである。
<Material>
The materials used in the examples and comparative examples are as follows.
［スチレン系樹脂］
ポリスチレン１（ＰＳ１）：ＰＳジャパン社製、グレード名 ６８５、ＭＦＲ＝１．５ｇ／１０分（ＧＰＰＳ、線状ＰＳ）
ポリスチレン２（ＰＳ２）：ＤＩＣ社製、グレード名 ＨＰ−１００、ＭＦＲ＝３．３ｇ／１０分（線状ＰＳ８４質量％と多分岐ＰＳ１６質量％との混合物、アクリル酸ブチル単量体の含有量２％）
耐衝撃性ポリスチレン（ＨＩＰＳ）：ＰＳジャパン社製、グレード名 Ｈ８６７２、ＭＦＲ＝４．０ｇ／１０分
[Styrene resin]
Polystyrene 1 (PS1): manufactured by PS Japan Corporation, grade name 685, MFR = 1.5 g / 10 minutes (GPPS, linear PS)
Polystyrene 2 (PS2): manufactured by DIC, grade name HP-100, MFR = 3.3 g / 10 minutes (mixture of linear PS 84% by mass and multi-branched PS 16% by mass, content of butyl acrylate monomer 2) %)
Impact-resistant polystyrene (HIPS): manufactured by PS Japan Corporation, grade name H8762, MFR = 4.0 g / 10 minutes
［鱗片状顔料］
パール顔料１：日本光研工業製、製品名 ツインクルパールＳＸＥ（厚み１μｍ、粒度分布２０〜８０μｍ、平均粒径約３７μｍ）
パール顔料２：日本光研工業製、製品名 ツインクルパールＳＸ（厚み１μｍ、粒度分布４０〜２００μｍ、平均粒径約９０μｍ）
高輝顔料１：日本板硝子製、製品名 メタシャインＧＴ１０８０ＲＳ（厚み１μｍ、粒度分布１０〜５００μｍ、平均粒径約８０μｍ）
[Reptile pigment]
Pearl Pigment 1: Made by Nippon Koken Kogyo, product name Twinkle Pearl SXE (thickness 1 μm, particle size distribution 20-80 μm, average particle size about 37 μm)
Pearl Pigment 2: Made by Nippon Koken Kogyo, product name Twinkle Pearl SX (thickness 1 μm, particle size distribution 40-200 μm, average particle size about 90 μm)
Highly bright pigment 1: Made by Nippon Sheet Glass, product name Metashine GT1080RS (thickness 1 μm, particle size distribution 10 to 500 μm, average particle size about 80 μm)
《測定及び評価方法》
実施例及び比較例において使用した測定及び評価方法は、以下のとおりである。
<< Measurement and evaluation method >>
The measurement and evaluation methods used in the examples and comparative examples are as follows.
（１）高輝性樹脂フィルム、高輝性樹脂積層フィルムの厚み
ＪＩＳ−Ｂ−７５０３に準拠したダイヤルゲージにより、高輝性樹脂フィルム、高輝性樹脂積層フィルムの厚みを測定した（単位：μｍ）。
(1) Thickness of High Brightness Resin Film and High Brightness Resin Laminated Film The thickness of the high brightness resin film and high brightness resin laminated film was measured with a dial gauge conforming to JIS-B-7503 (unit: μm).
（２）高輝性樹脂フィルム、高輝性樹脂積層フィルムの透明性（ヘイズ値：Ｈ）及び換算ヘイズ値（Ｈ２５）
ＪＩＳ−Ｋ−７１３６に準拠し、ヘイズメーター（日本電色工業製、ＮＤＨ５０００）を用いて高輝性樹脂フィルム、高輝性樹脂積層フィルムのヘイズ値（Ｈ）を測定し、整数値に四捨五入して求めた（単位：％）。
引き続き、あらかじめ測定した高輝性樹脂フィルム、高輝性樹脂積層フィルムの厚み測定値（ｄ）を用いて、下記式に従い、厚み２５μｍの樹脂フィルムとした場合の換算ヘイズ値（Ｈ２５）を求めた。
Ｈ２５（％）＝Ｈ（％）×２５（μｍ）／ｄ（μｍ）
Ｈ２５：厚み２５μｍ換算した換算ヘイズ値（％）
Ｈ：ヘイズの実測値（％）
ｄ：ヘイズ測定部の高輝性樹脂フィルム（高輝性樹脂積層フィルム）の厚み（μｍ）
(2) Transparency (haze value: H) and converted haze value (H25) of the high-brightness resin film and high-brightness resin laminated film.
Based on JIS-K-7136, measure the haze value (H) of the high-brightness resin film and high-brightness resin laminated film using a haze meter (NDH5000 manufactured by Nippon Denshoku Kogyo Co., Ltd.), and round off to an integer value. (Unit:%).
Subsequently, using the thickness measurement values (d) of the high-brightness resin film and the high-brightness resin laminated film measured in advance, the converted haze value (H25) when the resin film having a thickness of 25 μm was obtained was determined according to the following formula.
H25 (%) = H (%) x 25 (μm) / d (μm)
H25: Converted haze value (%) converted to thickness 25 μm
H: Measured value of haze (%)
d: Thickness (μm) of the high-brightness resin film (high-brightness resin laminated film) of the haze measuring part
（３）高輝性樹脂フィルムの光沢性（グロス値）
高輝性樹脂フィルム、高輝性樹脂積層フィルムについて、ＪＩＳ−Ｚ８７４１法に準拠し、光沢計（日本電色工業製、ＶＧ７０００）を用いて以下のとおり測定した（単位：％）。
光沢計の測定角度を４５度とし、標準板を試料台にのせて標準校正を行った。次に、測定サンプルを試料台にのせて、４５度でのフィルムの光沢度を測定した。
ただし、光沢度測定面は、フィルムに印刷を行った場合には、印刷インキ層がある側とは反対側の面とした。
(3) Gloss (gloss value) of high-brightness resin film
The high-brightness resin film and the high-brightness resin laminated film were measured as follows (unit:%) using a gloss meter (manufactured by Nippon Denshoku Kogyo Co., Ltd., VG7000) in accordance with the JIS-Z8741 method.
The measurement angle of the gloss meter was set to 45 degrees, and a standard plate was placed on a sample table to perform standard calibration. Next, the measurement sample was placed on a sample table, and the glossiness of the film at 45 degrees was measured.
However, when printing is performed on the film, the glossiness measurement surface is the surface opposite to the side where the printing ink layer is located.
（４）高輝性樹脂フィルム、高輝性樹脂積層フィルムの算術平均粗さ（Ｒａ）
高輝性樹脂フィルム、又は高輝性樹脂積層フィルムの表裏両面について、ＪＩＳ Ｂ ０６０１に準拠して、表裏各３か所測定し、表裏それぞれの測定値の平均値を算出し、平均値の小さい値を採用した。
・測定機：ミツトヨ社製、表面粗さ測定器、型番：ＳＶ−３０００ＣＮＣ
・測定長さＬ＝１０ｍｍ
・測定環境：２３℃±２℃、５０％ＲＨ
(4) Arithmetic mean roughness (Ra) of high-brightness resin film and high-brightness resin laminated film
For both the front and back sides of the high-brightness resin film or high-brightness resin laminated film, measure each of the front and back at three locations in accordance with JIS B 0601, calculate the average value of the measured values on the front and back, and set the value with the smaller average value. Adopted.
-Measuring machine: Mitutoyo, surface roughness measuring device, model number: SV-3000CNC
・ Measurement length L = 10 mm
-Measurement environment: 23 ° C ± 2 ° C, 50% RH
（５）成形体（容器）想定の印刷視認性レベル
高輝性樹脂フィルムと樹脂発泡体シートを積層した積層シートから熱成形した容器を想定した場合における、柄印刷表面の外観や、印刷柄の視認性の観点から、換算ヘイズ値（Ｈ２５）を以下の評価基準で判定した。
５（優良）：印刷柄が非常に鮮明で、優れた印刷視認性を示すレベル、３％以下の換算ヘイズ値に相当。
４（良好）：印刷柄が鮮明で、良好な印刷視認性を示すレベル、３％超４％以下の換算ヘイズ値に相当。
３（実用可）：印刷柄がクリアで、実用的な印刷視認性を示すレベル、４％超５％以下の換算ヘイズ値に相当。
２（不良）：印刷柄が白濁して表面光沢も無く、印刷視認性に劣るレベル、５％超の換算ヘイズ値に相当。
(5) Assumed print visibility level of molded body (container) The appearance of the pattern printing surface and the visibility of the printed pattern when a container thermoformed from a laminated sheet in which a high-brightness resin film and a resin foam sheet are laminated are assumed. From the viewpoint of sex, the converted haze value (H25) was determined according to the following evaluation criteria.
5 (excellent): The printed pattern is very clear, showing excellent print visibility, and corresponds to a converted haze value of 3% or less.
4 (Good): A level at which the printed pattern is clear and shows good print visibility, which corresponds to a converted haze value of more than 3% and 4% or less.
3 (Practical use): The print pattern is clear and the level indicates practical print visibility, which corresponds to a converted haze value of more than 4% and 5% or less.
2 (Defective): The printed pattern becomes cloudy and has no surface gloss, which is inferior in print visibility and corresponds to a converted haze value of more than 5%.
（６）成形体（容器）想定の高輝性レベル
高輝性樹脂フィルムと発泡体シートを積層した積層シートから熱成形した容器を想定した場合におけるキラキラ感のある光反射による高輝性の観点から４５度グロス値（Ｇ４５）と目視観察により以下の評価基準で判定した。
５（優良）：光沢性Ｇ４５≧１４０％、且つ、目視観察で粒子の立体感と粒子のキラキラ感との両方が優れている。
４（良好）：光沢性Ｇ４５≧１４０％、且つ、目視観察で粒子の立体感もしくは粒子のキラキラ感どちらかが優れている。
３（実用可）：光沢性Ｇ４５≧１４０％、且つ、目視観察でわずかに粒子の立体感もしくは粒子のキラキラ感のどちらかが感じられる
２（不良）：光沢性Ｇ４５＜１４０％、又は、目視観察で粒子の立体感及び粒子のキラキラ感のどちらも感じられない
(6) Assumed high brightness level of molded body (container) 45 degrees from the viewpoint of high brightness due to light reflection with a glittering feeling when assuming a container thermoformed from a laminated sheet in which a high brightness resin film and a foam sheet are laminated. It was judged by the following evaluation criteria by the gloss value (G45) and visual observation.
5 (excellent): The glossiness G45 ≧ 140%, and both the three-dimensional appearance of the particles and the glittering feeling of the particles are excellent by visual observation.
4 (Good): The glossiness G45 ≧ 140%, and either the three-dimensional appearance of the particles or the glittering feeling of the particles is excellent by visual observation.
3 (Practical use): Gloss G45 ≥ 140%, and either a slight three-dimensional feeling of particles or a glittering feeling of particles can be felt by visual observation. 2 (Defective): Gloss G45 <140% or visual observation. When observing, neither the three-dimensional effect of the particles nor the glittering effect of the particles can be felt.
（７）総合評価
以下の評価基準で総合評価を行った。
◎（優良）：印刷視認性、高輝性レベルが３以上でかつ合計が１０である。
○（良好）：印刷視認性、高輝性レベルが３以上でかつ合計が８〜９である。
△（実用可）：印刷視認性、高輝性レベルが３以上でかつ合計が７である。
×（不良）：印刷視認性、高輝性レベルの少なくとも一方が２以下もしくは合計が６以下である。
(7) Comprehensive evaluation Comprehensive evaluation was performed according to the following evaluation criteria.
⊚ (excellent): The print visibility and high brightness level are 3 or more, and the total is 10.
◯ (Good): The print visibility and high brightness levels are 3 or more, and the total is 8 to 9.
Δ (Practical use): The print visibility and high brightness level are 3 or more, and the total is 7.
X (defective): At least one of the print visibility and high brightness levels is 2 or less, or the total is 6 or less.
［実施例１〜３］
スチレン系樹脂と鱗片状顔料を、表１で示した割合で配合し、インフレーション法によって延伸して、２５μｍ厚みのフィルムＡを作製した（なお、配合する前に、鱗片状顔料剤と各熱可塑性樹脂の一部を、二軸押出機にてマスターバッチにしてから使用した。）。
その後、フィルムの片面（光沢測定面とは反対側の面）にバーコーターＮｏ．１８（第一理化製）を用いて水性黒色インキ（ＤＩＣグラフィックス製、マリーングロスＰＥ ８０５墨）をベタ印刷後に熱風乾燥機で乾燥（９０℃、３分間）して、測定用サンプルとした。
[Examples 1 to 3]
The styrene resin and the scaly pigment were blended in the ratios shown in Table 1 and stretched by an inflation method to prepare a film A having a thickness of 25 μm (note that the scaly pigment and each thermoplastic before blending). A part of the resin was used after making a masterbatch with a twin-screw extruder.)
After that, on one side of the film (the side opposite to the gloss measurement side), the bar coater No. A water-based black ink (manufactured by DIC Graphics, Maring Ross PE 805 ink) was solid-printed using 18 (manufactured by Daiichi Rika) and then dried with a hot air dryer (90 ° C. for 3 minutes) to prepare a sample for measurement.
［実施例４〜８］
スチレン系樹脂と鱗片状顔料を、表１で示した割合で配合し、インフレーション法によって延伸して、２０μｍ厚みのフィルムＡを作製した（なお、配合する前に、鱗片状顔料剤と各熱可塑性樹脂の一部を、二軸押出機にてマスターバッチにしてから使用した。）。
続いてスチレン系樹脂を表１の配合で配合しインフレーション法によって延伸して１５μｍ厚みのフィルムＢを作成した。
得られたフィルムＡ、フィルムＢを接着剤を用いてラミネートしてフィルムを作成した。
その後、実施例４〜６及び８の多層フィルムのフィルムＡ面側にバーコーターＮｏ．１８（第一理化製）を用いて水性黒色インキ（ＤＩＣグラフィックス製、マリーングロスＰＥ ８０５墨）をベタ印刷後に熱風乾燥機で乾燥（９０℃、３分間）して、測定用サンプルとした。
得られた実施例７のフィルムは、印刷を施さず、そのまま測定用サンプルとした。
[Examples 4 to 8]
The styrene resin and the scaly pigment were blended in the ratios shown in Table 1 and stretched by an inflation method to prepare a film A having a thickness of 20 μm (note that the scaly pigment and each thermoplastic before blending). A part of the resin was used after making a masterbatch with a twin-screw extruder.)
Subsequently, the styrene resin was blended according to the formulation shown in Table 1 and stretched by an inflation method to prepare a film B having a thickness of 15 μm.
The obtained films A and B were laminated with an adhesive to prepare a film.
After that, the bar coater No. 1 was placed on the film A side of the multilayer films of Examples 4 to 6 and 8. A water-based black ink (manufactured by DIC Graphics, Maring Ross PE 805 ink) was solid-printed using 18 (manufactured by Daiichi Rika) and then dried with a hot air dryer (90 ° C. for 3 minutes) to prepare a sample for measurement.
The obtained film of Example 7 was not printed and was used as a measurement sample as it was.
〔実施例９〜１２〕
表１に示したフィルムＡの配合及びフィルムＢの配合をそれぞれ、層１及び層２として共押出し、インフレーション法により延伸して３０μｍのフィルムを作成した。
その後、多層フィルムの層１面側にバーコーターＮｏ．１８（第一理化製）を用いて水性黒色インキ（ＤＩＣグラフィックス製、マリーングロスＰＥ ８０５墨）をベタ印刷後に熱風乾燥機で乾燥（９０℃、３分間）して、測定用サンプルとした。
[Examples 9 to 12]
The formulation of film A and the formulation of film B shown in Table 1 were co-extruded as layers 1 and 2, respectively, and stretched by an inflation method to prepare a 30 μm film.
After that, the bar coater No. 1 was placed on the one side of the multilayer film. A water-based black ink (manufactured by DIC Graphics, Maring Ross PE 805 ink) was solid-printed using 18 (manufactured by Daiichi Rika) and then dried with a hot air dryer (90 ° C. for 3 minutes) to prepare a sample for measurement.
［比較例１］
スチレン系樹脂を、表１で示した割合で配合し、インフレーション法によって延伸して、２５μｍ厚みのフィルムを作製した。
その後、バーコーターＮｏ．１８（第一理化製）を用いて水性黒色インキ（ＤＩＣグラフィックス製、マリーングロスＰＥ ８０５墨に鱗片状顔料を表１の割合で配合）をベタ印刷後に熱風乾燥機で乾燥（９０℃、３分間）して、測定用サンプルとした。
[Comparative Example 1]
The styrene resin was blended in the proportions shown in Table 1 and stretched by an inflation method to prepare a film having a thickness of 25 μm.
After that, the bar coater No. Using 18 (manufactured by Daiichi Rika), water-based black ink (manufactured by DIC Graphics, Maringros PE 805 ink mixed with scaly pigment in the ratio shown in Table 1) was solid-printed and then dried with a hot air dryer (90 ° C, 3). Minutes) to prepare a sample for measurement.
［比較例２〜３］
比較例２〜３は表１に示すように原料組成を変更したこと以外は実施例１〜３と同様にして行いフィルムを得た。
その後、バーコーターＮｏ．１８（第一理化製）を用いて水性黒色インキ（ＤＩＣグラフィックス製、マリーングロスＰＥ ８０５墨）をベタ印刷後に熱風乾燥機で乾燥（９０℃、３分間）して、測定用サンプルとした。
[Comparative Examples 2-3]
Comparative Examples 2 and 3 were carried out in the same manner as in Examples 1 to 3 except that the raw material composition was changed as shown in Table 1 to obtain a film.
After that, the bar coater No. A water-based black ink (manufactured by DIC Graphics, Maring Ross PE 805 ink) was solid-printed using 18 (manufactured by Daiichi Rika) and then dried with a hot air dryer (90 ° C. for 3 minutes) to prepare a sample for measurement.
［比較例４］
比較例４は表１に示すように原料組成を変更したこと以外は実施例４〜８と同様にして行いフィルムを得た。
その後、多層フィルムの層１面側にバーコーターＮｏ．１８（第一理化製）を用いて水性黒色インキ（ＤＩＣグラフィックス製、マリーングロスＰＥ ８０５墨）をベタ印刷後に熱風乾燥機で乾燥（９０℃、３分間）して、測定用サンプルとした。
[Comparative Example 4]
Comparative Example 4 was carried out in the same manner as in Examples 4 to 8 except that the raw material composition was changed as shown in Table 1, to obtain a film.
After that, the bar coater No. 1 was placed on the one side of the multilayer film. A water-based black ink (manufactured by DIC Graphics, Maring Ross PE 805 ink) was solid-printed using 18 (manufactured by Daiichi Rika) and then dried with a hot air dryer (90 ° C. for 3 minutes) to prepare a sample for measurement.
実施例１〜１２及び比較例１〜４で得られたフィルムの各物性、評価結果をまとめて表１に示す。 Table 1 summarizes the physical characteristics and evaluation results of the films obtained in Examples 1 to 12 and Comparative Examples 1 to 4.
樹脂として耐衝撃性ポリスチレンを含むポリスチレンのスチレン系樹脂に、鱗片状顔料としてパール顔料及び高輝顔料を０．１〜１．０質量％を配合した組合せの実施例１〜３は、良好な又は実用上問題の無い印刷視認性レベルと高輝性レベルを示した。
また、熱可塑性樹脂として耐衝撃性ポリスチレンを含むポリスチレンのスチレン系樹脂に鱗片状顔料としてパール顔料及び高輝顔料を０．１〜１．０質量％を配合したフィルムと鱗片状顔料を含まないスチレン系樹脂フィルムとの積層フィルムは、高い印刷視認性と高輝性を示した。
一方、フィルムに鱗片状顔料を含まない比較例１は、高輝性に劣るレベルであった。また、鱗片状顔料を１．０質量％超える量含んでいる比較例２〜４は、印刷視認性もしくは高輝性が劣るレベルであった。
Examples 1 to 3 of a combination of a polystyrene styrene resin containing impact-resistant polystyrene as a resin and 0.1 to 1.0% by mass of a pearl pigment and a bright pigment as a scaly pigment are good or practical. The print visibility level and high brightness level without any problems were shown.
In addition, a film containing 0.1 to 1.0% by mass of a pearl pigment and a bright pigment as a scaly pigment in a polystyrene styrene resin containing impact-resistant polystyrene as a thermoplastic resin and a styrene-based resin containing no scaly pigment. The laminated film with the resin film showed high print visibility and high brightness.
On the other hand, Comparative Example 1 in which the film did not contain the reptile pigment was at a level inferior in high brightness. In addition, Comparative Examples 2 to 4 containing a reptile pigment in an amount exceeding 1.0% by mass were at a level inferior in print visibility or high brightness.
本発明の高輝性樹脂フィルム（単層フィルム、多層フィルム）に裏印刷し、スチレン系樹脂発泡体に熱ラミレートしてなる積層シートを成形して得られる容器は、高輝性樹脂フィルムの優れた透明性と光沢性、更に印刷層と高輝性樹脂フィルム層が積層されていることにより、裏刷り印刷の上にキラキラした粒子が浮かんだような立体感のある高輝性が得られる。従って、本発明の容器及びそれを用いた包装体は、その透明性や光沢性により印刷仕上がりの意匠性に差別的な高級感がある、食品用容器、飲料用容器、カップ麺容器等の食品用容器及び包装体として好適に使用することができる。 The container obtained by back-printing on the high-brightness resin film (single-layer film, multilayer film) of the present invention and molding a laminated sheet formed by thermally laminating the styrene-based resin foam is excellent in transparency of the high-brightness resin film. By laminating the printing layer and the high-brightness resin film layer, it is possible to obtain high-brightness with a three-dimensional effect as if glittering particles were floating on the back print. Therefore, the container of the present invention and the package using the same have a high-class feeling that discriminates in the design of the printed finish due to its transparency and glossiness, and foods such as food containers, beverage containers, and cup noodle containers. It can be suitably used as a container and a packaging body.
Claims (16)
前記鱗片状顔料の含有量が前記熱可塑性樹脂を１００質量％として０．０１〜１．０質量％であり、
２５μｍ厚み換算した換算ヘイズ値（Ｈ２５）が５％以下である
ことを特徴とする、高輝性樹脂フィルム。 It contains a thermoplastic resin and a reptile pigment having an aspect ratio of 3 or more and an average particle size of 10 to 100 μm.
The content of the reptile pigment is 0.01 to 1.0% by mass with the thermoplastic resin as 100% by mass.
A highly bright resin film characterized in that the converted haze value (H25) converted to a thickness of 25 μm is 5% or less.
少なくとも一方の面の表面粗さ（Ｒａ）が０．１〜５．０μｍである
ことを特徴とする、高輝性樹脂積層フィルム。 It contains a thermoplastic resin and a scaly pigment having an aspect ratio of 3 or more and an average particle size of 10 to 100 μm, and the content of the scaly pigment is 0.01 to 0.01 by mass% of the thermoplastic resin. A film containing the thermoplastic resin and not containing the scaly pigment is laminated on at least one surface of the high-brightness resin film having a thickness of 1.0% by mass, and a converted haze value (H25) converted to a thickness of 25 μm is obtained. It is a high-brightness resin laminated film with 5% or less.
A high-brightness resin laminated film having a surface roughness (Ra) of at least one surface of 0.1 to 5.0 μm.
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|---|---|---|---|---|
| JP2001226500A (en) * | 1999-12-06 | 2001-08-21 | Nippon Sheet Glass Co Ltd | Glossy synthetic film and method for producing the same |
| JP2003048291A (en) * | 2001-08-08 | 2003-02-18 | Teijin Dupont Films Japan Ltd | Semi-transmissive and reflective laminated polyester film and manufacturing method therefor |
| JP2003050304A (en) * | 2001-08-07 | 2003-02-21 | Teijin Dupont Films Japan Ltd | Semitransmitting reflective polyester film and method for manufacturing the same |
| WO2016104112A1 (en) * | 2014-12-22 | 2016-06-30 | Ｊｘエネルギー株式会社 | Sheet-shaped, transparent molding, transparent screen provided with same, and image projection device provided with same |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001226500A (en) * | 1999-12-06 | 2001-08-21 | Nippon Sheet Glass Co Ltd | Glossy synthetic film and method for producing the same |
| JP2003050304A (en) * | 2001-08-07 | 2003-02-21 | Teijin Dupont Films Japan Ltd | Semitransmitting reflective polyester film and method for manufacturing the same |
| JP2003048291A (en) * | 2001-08-08 | 2003-02-18 | Teijin Dupont Films Japan Ltd | Semi-transmissive and reflective laminated polyester film and manufacturing method therefor |
| WO2016104112A1 (en) * | 2014-12-22 | 2016-06-30 | Ｊｘエネルギー株式会社 | Sheet-shaped, transparent molding, transparent screen provided with same, and image projection device provided with same |
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