CN101970225A - Laminate, cover member for hermetically sealed container using the same, and hermetically sealed container - Google Patents
Laminate, cover member for hermetically sealed container using the same, and hermetically sealed container Download PDFInfo
- Publication number
- CN101970225A CN101970225A CN2009801084514A CN200980108451A CN101970225A CN 101970225 A CN101970225 A CN 101970225A CN 2009801084514 A CN2009801084514 A CN 2009801084514A CN 200980108451 A CN200980108451 A CN 200980108451A CN 101970225 A CN101970225 A CN 101970225A
- Authority
- CN
- China
- Prior art keywords
- mentioned
- laminated body
- resin
- layer
- superficial 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.)
- Granted
Links
- 229920005989 resin Polymers 0.000 claims abstract description 72
- 239000011347 resin Substances 0.000 claims abstract description 72
- 239000000758 substrate Substances 0.000 claims abstract description 60
- 239000000463 material Substances 0.000 claims abstract description 57
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 47
- 230000009477 glass transition Effects 0.000 claims abstract description 14
- 229920001577 copolymer Polymers 0.000 claims description 32
- 229920001971 elastomer Polymers 0.000 claims description 23
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical group C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 12
- 239000000806 elastomer Substances 0.000 claims description 8
- 150000002148 esters Chemical class 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 229920000642 polymer Polymers 0.000 claims description 4
- 239000000088 plastic resin Substances 0.000 claims 1
- 125000003011 styrenyl group Chemical group [H]\C(*)=C(/[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 claims 1
- 239000010410 layer Substances 0.000 abstract description 132
- 239000002344 surface layer Substances 0.000 abstract description 7
- 239000012790 adhesive layer Substances 0.000 abstract description 4
- 239000004793 Polystyrene Substances 0.000 description 26
- 229920002223 polystyrene Polymers 0.000 description 26
- ROSDSFDQCJNGOL-UHFFFAOYSA-N Dimethylamine Chemical compound CNC ROSDSFDQCJNGOL-UHFFFAOYSA-N 0.000 description 20
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 20
- -1 Aliphatic dicarboxylic acids Chemical class 0.000 description 16
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 15
- 239000005060 rubber Substances 0.000 description 15
- 229920001684 low density polyethylene Polymers 0.000 description 11
- 239000004702 low-density polyethylene Substances 0.000 description 11
- 239000000203 mixture Substances 0.000 description 11
- 238000007789 sealing Methods 0.000 description 10
- 239000002245 particle Substances 0.000 description 9
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 8
- 238000007664 blowing Methods 0.000 description 7
- 238000002844 melting Methods 0.000 description 7
- 230000008018 melting Effects 0.000 description 7
- 238000002156 mixing Methods 0.000 description 7
- 238000012545 processing Methods 0.000 description 7
- 150000003440 styrenes Chemical class 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 239000000654 additive Substances 0.000 description 6
- BAPJBEWLBFYGME-UHFFFAOYSA-N acrylic acid methyl ester Natural products COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000178 monomer Substances 0.000 description 5
- 239000005977 Ethylene Substances 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 229920006225 ethylene-methyl acrylate Polymers 0.000 description 4
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 229920001897 terpolymer Polymers 0.000 description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- YIMQCDZDWXUDCA-UHFFFAOYSA-N [4-(hydroxymethyl)cyclohexyl]methanol Chemical compound OCC1CCC(CO)CC1 YIMQCDZDWXUDCA-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 239000005030 aluminium foil Substances 0.000 description 3
- 230000002421 anti-septic effect Effects 0.000 description 3
- 239000003963 antioxidant agent Substances 0.000 description 3
- 230000003078 antioxidant effect Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000003851 corona treatment Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 229920006242 ethylene acrylic acid copolymer Polymers 0.000 description 3
- 229920005648 ethylene methacrylic acid copolymer Polymers 0.000 description 3
- 239000012760 heat stabilizer Substances 0.000 description 3
- 229920001903 high density polyethylene Polymers 0.000 description 3
- 239000004700 high-density polyethylene Substances 0.000 description 3
- 238000003475 lamination Methods 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 229920002587 poly(1,3-butadiene) polymer Polymers 0.000 description 3
- 229920002647 polyamide Polymers 0.000 description 3
- 229920005644 polyethylene terephthalate glycol copolymer Polymers 0.000 description 3
- 229920005672 polyolefin resin Polymers 0.000 description 3
- 229920000346 polystyrene-polyisoprene block-polystyrene Polymers 0.000 description 3
- 229920003048 styrene butadiene rubber Polymers 0.000 description 3
- 150000005846 sugar alcohols Polymers 0.000 description 3
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 3
- JLBJTVDPSNHSKJ-UHFFFAOYSA-N 4-Methylstyrene Chemical compound CC1=CC=C(C=C)C=C1 JLBJTVDPSNHSKJ-UHFFFAOYSA-N 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 2
- 229920002302 Nylon 6,6 Polymers 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 229920006167 biodegradable resin Polymers 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 238000000071 blow moulding Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 229920006026 co-polymeric resin Polymers 0.000 description 2
- 229920006244 ethylene-ethyl acrylate Polymers 0.000 description 2
- 229920005669 high impact polystyrene Polymers 0.000 description 2
- 239000004797 high-impact polystyrene Substances 0.000 description 2
- 238000005984 hydrogenation reaction Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 229920001179 medium density polyethylene Polymers 0.000 description 2
- 239000004701 medium-density polyethylene Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- DNIAPMSPPWPWGF-UHFFFAOYSA-N monopropylene glycol Natural products CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 description 2
- 229920001225 polyester resin Polymers 0.000 description 2
- 238000007142 ring opening reaction Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- NVZWEEGUWXZOKI-UHFFFAOYSA-N 1-ethenyl-2-methylbenzene Chemical compound CC1=CC=CC=C1C=C NVZWEEGUWXZOKI-UHFFFAOYSA-N 0.000 description 1
- 125000004825 2,2-dimethylpropylene group Chemical group [H]C([H])([H])C(C([H])([H])[H])(C([H])([H])[*:1])C([H])([H])[*:2] 0.000 description 1
- 239000005063 High cis polybutadiene Substances 0.000 description 1
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Natural products CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 239000002174 Styrene-butadiene Substances 0.000 description 1
- 239000004708 Very-low-density polyethylene Substances 0.000 description 1
- 229920006387 Vinylite Polymers 0.000 description 1
- LCJHLOJKAAQLQW-UHFFFAOYSA-N acetic acid;ethane Chemical compound CC.CC(O)=O LCJHLOJKAAQLQW-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001993 dienes Chemical class 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 1
- QHZOMAXECYYXGP-UHFFFAOYSA-N ethene;prop-2-enoic acid Chemical compound C=C.OC(=O)C=C QHZOMAXECYYXGP-UHFFFAOYSA-N 0.000 description 1
- 239000004715 ethylene vinyl alcohol Substances 0.000 description 1
- 239000005042 ethylene-ethyl acrylate Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- RZXDTJIXPSCHCI-UHFFFAOYSA-N hexa-1,5-diene-2,5-diol Chemical compound OC(=C)CCC(O)=C RZXDTJIXPSCHCI-UHFFFAOYSA-N 0.000 description 1
- 229940051250 hexylene glycol Drugs 0.000 description 1
- 150000004678 hydrides Chemical class 0.000 description 1
- 239000012770 industrial material Substances 0.000 description 1
- 229920000554 ionomer Polymers 0.000 description 1
- QQVIHTHCMHWDBS-UHFFFAOYSA-L isophthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC(C([O-])=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-L 0.000 description 1
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- RXOHFPCZGPKIRD-UHFFFAOYSA-N naphthalene-2,6-dicarboxylic acid Chemical compound C1=C(C(O)=O)C=CC2=CC(C(=O)O)=CC=C21 RXOHFPCZGPKIRD-UHFFFAOYSA-N 0.000 description 1
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920005678 polyethylene based resin Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920005606 polypropylene copolymer Polymers 0.000 description 1
- 229920002742 polystyrene-block-poly(ethylene/propylene) -block-polystyrene Polymers 0.000 description 1
- 229920002215 polytrimethylene terephthalate Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000000047 product Substances 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
- 239000011241 protective layer Substances 0.000 description 1
- 235000011962 puddings Nutrition 0.000 description 1
- 229920005604 random copolymer Polymers 0.000 description 1
- MXNUCYGENRZCBO-UHFFFAOYSA-M sodium;ethene;2-methylprop-2-enoate Chemical compound [Na+].C=C.CC(=C)C([O-])=O MXNUCYGENRZCBO-UHFFFAOYSA-M 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 238000009662 stress testing Methods 0.000 description 1
- 229920001935 styrene-ethylene-butadiene-styrene Polymers 0.000 description 1
- 229920001862 ultra low molecular weight polyethylene Polymers 0.000 description 1
- 229920001866 very low density polyethylene Polymers 0.000 description 1
- 235000013618 yogurt Nutrition 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/302—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/724—Permeability to gases, adsorption
- B32B2307/7242—Non-permeable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/732—Dimensional properties
- B32B2307/734—Dimensional stability
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2435/00—Closures, end caps, stoppers
- B32B2435/02—Closures, end caps, stoppers for containers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2439/00—Containers; Receptacles
- B32B2439/40—Closed containers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2439/00—Containers; Receptacles
- B32B2439/70—Food packaging
Landscapes
- Laminated Bodies (AREA)
- Wrappers (AREA)
Abstract
本发明提供一种叠层体，其具有表面层、基材层和粘结层，所述粘结层配置在该表面层和基材层之间、在其一个表面上与上述表面层粘结、在另一面上与上述基材层粘结，其特征在于，上述表面层由含有热塑性树脂的树脂材料形成，且构成该叠层体的一个表面，上述基材层由树脂材料形成，该树脂材料含有40质量％以上的玻璃化转变温度在50～150℃范围内的非晶性热塑性树脂，上述基材层的厚度为30μm～200μm，且上述叠层体的厚度为60μm～250μm。另外，本发明还提供使用了该叠层体的密闭容器用盖体构件和密闭容器。The present invention provides a laminate comprising a surface layer, a base material layer, and an adhesive layer disposed between the surface layer and the base material layer and bonded to the surface layer on one surface thereof. , bonded to the substrate layer on the other side, wherein the surface layer is formed of a resin material containing a thermoplastic resin and constitutes one surface of the laminate, the substrate layer is formed of a resin material, and the resin The material contains 40% by mass or more of an amorphous thermoplastic resin having a glass transition temperature in the range of 50-150° C., the thickness of the base material layer is 30 μm-200 μm, and the thickness of the laminate is 60 μm-250 μm. Moreover, this invention provides the lid|cover body member for airtight containers which used this laminated body, and an airtight container.
Description
Technical field
The present invention relates to conformality (the particularly retentivity of buckling deformation and bending distortion) excellent, be suitable for use as closed container with cap member (Cover material), do not have the laminated body of aluminium foil layer, also relate to of the application (typically, relate to the closed container cap member and the closed container that have used this laminated body) of this laminated body at packaging field.
Background technology
At present, accommodate in the closed container of food such as yoghourt, pudding, use to comprise the laminated body of aluminium foil base material and hot sealing layer as cap member.But in recent years, has the cap member (with reference to TOHKEMY 2003-267422 communique) that replaces aluminium foil base material base material in order to adapt to the packaging material that to use as the requirement that industrial materials utilize again, to have researched and developed.
For example in patent documentation 1, put down in writing the no aluminium lid body member that substrate layer is formed by resin combination, described resin combination comprises the copolymer resin (A) of specific composition ratio of styrenic monomers (a) and conjugated diene monomer (b) and the copolymer resin (B) of polystyrene or acrylic monomer (c) and styrenic monomers (d).
Laminated body for existing no aluminium lid body member is used has the requirement that improves conformality, in addition, the requirement of improvement is arranged also for the stability and the easy fissility of sealing intensity.
Summary of the invention
In view of above problem, the object of the present invention is to provide excellent shape retention property, be suitable as the no aluminium laminated body of closed container with the material use of cap member, the no aluminium laminated body of the material use that is suitable as sealing intensity stability or the easy improved cap member of fissility also is provided, the closed container cap member and the closed container of sealing property excellence further is provided.
The invention provides laminated body, it has superficial layer, substrate layer and tack coat, described tack coat is configured between this superficial layer and the substrate layer, on the one surface with above-mentioned superficial layer bonding, on another side with above-mentioned substrate layer bonding, it is characterized in that,
Above-mentioned superficial layer is formed by the resin material that contains thermoplastic resin, and constitutes a surface of this laminated body,
Above-mentioned substrate layer is formed by resin material, and this resin material contains the above amorphism thermoplastic resin of glass transition temperature in 50～150 ℃ of scopes of 40 quality %,
The thickness of above-mentioned substrate layer is 30 μ m～200 μ m, and the thickness of above-mentioned laminated body is 60 μ m～250 μ m.
The present invention also provides the closed container of being made by above-mentioned laminated body cap member, and the closed container with this cap member and container body.
The specific embodiment
(laminated body)
Laminated body of the present invention has superficial layer, substrate layer and tack coat, and described tack coat is configured between this superficial layer and the substrate layer, is boning with above-mentioned superficial layer on the one surface, boning with above-mentioned substrate layer on another side.The thickness of this laminated body is in the scope of 30 μ m～200 μ m, preferably in the scope of 80 μ m～240 μ m, more preferably in the scope of 100 μ m～230 μ m.
＜substrate layer 〉
Substrate layer of the present invention is meant the thickest layer that comprises in the laminated body of the present invention.
This substrate layer is the layer that is formed by resin material, and described resin material contains the above amorphism thermoplastic resin of glass transition temperature in 50 ℃～150 ℃ scopes of 40 quality %.The base material that is formed by following resin material can make laminated body of the present invention have high rigidity, can form the laminated body of the retentivity excellence of conformality, particularly buckling deformation and bending distortion, described resin material contains the amorphism thermoplastic resin of glass transition temperature in above-mentioned scope.The glass transition temperature of the above-mentioned amorphism thermoplastic resin that contains in the substrate layer is preferably in 60 ℃～140 ℃ scope, more preferably in 70 ℃～120 ℃ scope.The resin material of formation substrate layer also can contain the amorphism thermoplastic resin with this glass transition temperature more than 2 kinds.And " amorphism thermoplastic resin " among the present invention is meant the thermoplastic resin that does not observe endothermic peak in the mensuration of utilizing differential scanning heat instrument (DSC) to carry out.In addition, " glass transition temperature " of the present invention is meant the method according to JIS K7121 regulation, the numerical value that utilizes DSC to measure.
As the amorphism thermoplastic resin that in constituting the resin material of substrate layer, comprises, can enumerate phenylethylene resin series, ester is a resin etc.Phenylethylene resin series can be enumerated polystyrene, rubber modified polystyrene etc.Rubber modified polystyrene is meant that the soft composition particle that is obtained by styrenic and rubber-like polymer disperses to be present in the resin in the matrix that is formed by styrenic, and known have so-called " resistance to impact styrene (High Impact Polystyrene: be abbreviated as HIPS) ".Formation generally has styrene as the styrenic monomers of the styrene polymer of the matrix in the rubber modified polystyrene, also can be the phenylethylene that alkyl such as o-methyl styrene, a methyl styrene, p-methylstyrene replace.The rubber-like polymer that contains in the soft composition particle can use butadiene polymer, SB, isoprene copolymer, styrene-isoprene copolymer etc.Also SB and butadiene polymer can be share.It is any one of about 35% what is called " middle cis polybutadiene " that butadiene polymer can use high what is called of cis-content " high-cis polybutadiene " or cis containing ratio.
Ester is that resin is binary acid and polyalcohol to be carried out polycondensation and the product for preparing.Aliphatic dicarboxylic acids such as aromatic dicarboxylic acids such as binary acid can be enumerated terephthalic acid (TPA), M-phthalic acid, 2, the 6-naphthalenedicarboxylic acid or adipic acid.Polyalcohol can be enumerated ethylene glycol, 1,4-butanediol, 1,4-cyclohexanedimethanol, five glycol, 2,2-dimethyl propylene glycol, 1, glycol such as 6-hexylene glycol, neopentyl glycol.At ester is in the resin, can be with binary acid and polyalcohol combination arbitrarily arbitrarily.Ester is that the example of resin can be enumerated terephthalic acid (TPA)/glycol copolymer, terephthalic acid (TPA)/ethylene glycol/1,4-cyclohexanedimethanol terpolymer, 2,6-naphthalenedicarboxylic acid/glycol copolymer, terephthalic acid (TPA)/1,4-butanediol copolymer.Consider from the angle of the conformality of extruding processability, gained laminated body, the amorphism thermoplastic resin that contains in the substrate layer is rubber modified polystyrene and terephthalic acid (TPA)/ethylene glycol/1 preferably, 4-cyclohexanedimethanol terpolymer, more preferably rubber modified polystyrene.
From considering with the angle of material recovery the purposes of cap member at closed container, when forming container body with the amorphism thermoplastic resin, the further preferred amorphism thermoplastic resin that uses the resin identical to use as substrate layer with this amorphism thermoplastic resin.For example when container body contained rubber modified polystyrene, more preferably the substrate layer of laminated body of the present invention contained rubber modified polystyrene as the amorphism thermoplastic resin.
The resin material that forms substrate layer can also further contain polyamide-based resin, polyester based resin, polycarbonate resin, polyolefin-based resins, ionomer and be other thermoplastic resin such as resin, Biodegradable resin except above-mentioned amorphism thermoplastic resin.
Polyamide-based resin can be enumerated nylon 6, nylon 66, nylon 666, poly hexamethylene adipamide metaphenylene dimethylamine, poly-heptanedioyl metaphenylene dimethylamine, poly-nonanedioyl metaphenylene dimethylamine, poly-nonanedioyl is to the phenylene dimethylamine, poly-decanedioyl is to the phenylene dimethylamine, adipyl metaphenylene dimethylamine/adipyl is to phenylene dimethylamine copolymer, heptanedioyl metaphenylene dimethylamine/heptanedioyl is to phenylene dimethylamine copolymer, nonanedioyl metaphenylene dimethylamine/nonanedioyl is to phenylene dimethylamine copolymer, decanedioyl metaphenylene dimethylamine/decanedioyl is to phenylene dimethylamine copolymer etc.
Polyester based resin can be enumerated PETG, PTT, polybutylene terephthalate (PBT), polyethylene glycol isophthalate, PEN, PBN, PETG/ethylene isophthalate copolymer etc.
Polyolefin-based resins can be enumerated ultra-low density polyethylene (VLDPE), wire low density polyethylene (LDPE) (LLDPE), low density polyethylene (LDPE) (LDPE), medium density polyethylene (MDPE), high density polyethylene (HDPE) polyethylene-based resins such as (HDPE).
In addition, said polyolefins is that resin can also be enumerated vinyl-vinyl acetate copolymer (EVA), ethylene-methyl methacrylate methyl terpolymer (EMMA), ethylene-ethyl acrylate copolymer (EEA), ethylene-methyl acrylate copolymer (EMA), ethylene-acrylic acid copolymer (EAA), ethylene-methacrylic acid copolymer (EMAA), ethylene-methyl methacrylate glycidyl ester copolymer (E-GMA), ethane-acetic acid ethyenyl ester-glycidyl methacrylate copolymer (E-VA-GMA), ethene-copolymer-maleic anhydride (E-MAH), ethylene-propylene acetoacetic ester-copolymer-maleic anhydride (E-EA-MAH), Noblen, the polyolefin-based resins such as copolymer of propylene and other alpha-olefins, the random copolymer of cyclic olefins such as ethene and ENB or tetracyclododecane class and derivative thereof, the ring opening copolymer thing of cyclic olefin, the hydride of the ring opening copolymer thing of cyclic olefin, and the annular ethylene series resin such as graft modification thing of these copolymers.
Ionomer is the resin metal corrective that can enumerate ethylene-acrylic acid copolymer, metal corrective of ethylene-methacrylic acid copolymer etc.
Biodegradable resin can be enumerated PLA (for example Mitsui Chemicals society system " LACEA "), cellulose acetate (for example ダ イ セ Le chemistry society's system " セ Le グ リ one Application PCA "), chemical starch (for example Japanese コ one Application ス タ one チ society " コ one Application Port one Le ") etc.
In the resin material that forms substrate layer, the content of above-mentioned amorphism thermoplastic resin is in the scope of 40 quality %～100 quality %, preferably in the scope of 50 quality %～100 quality %, further in the scope of preferred 55 quality %～100 quality %.
The resin material that constitutes substrate layer also can contain additives such as lubricant, antistatic additive, antioxidant, heat stabilizer, ultra-violet absorber, antiseptic, antifoggant.
The thickness of substrate layer is in the scope of 30 μ m～200 μ m, and is preferably in the scope of 40 μ m～180 μ m, further preferred in the scope of 50 μ m～160 μ m.Thickness by making substrate layer can be given the conformality of lamination height in above-mentioned scope.
＜superficial layer 〉
Superficial layer in the laminated body of the present invention is meant that one surface constitutes the layer on a surface of above-mentioned laminated body.This superficial layer is formed by the resin material that contains thermoplastic resin.The composition of resin material that constitutes superficial layer is according to the purposes of laminated body and suitably decision.For example, consider that this superficial layer forms the layer that is fitted on the container body for laminated body as the design of the cap member of closed container, can select and container body between show the composition of appropriate sealing intensity.In a preferred scheme, it is 50～120 ℃ the amorphism thermoplastic resin more than a kind that this resin material preferably contains glass transition temperature.
As the example of the amorphism thermoplastic resin that contains in the superficial layer, same with the amorphism thermoplastic resin that uses in the substrate layer, can enumerate phenylethylene resin series, ester is a resin etc.In addition, consider that from the angle of material recovery preferably the amorphism thermoplastic resin of use and substrate layer is an amorphism thermoplastic resin of the same race in superficial layer.As closed container with in the purposes of cap member, when forming container body with the amorphism thermoplastic resin, in laminated body of the present invention, preferably in substrate layer and superficial layer, use respectively with this amorphism thermoplastic resin be resin of the same race.For example, when container body contained rubber modified polystyrene, in the laminated body that the cap member as this container designs, more preferably the amorphism thermoplastic resin of the amorphism thermoplastic resin of substrate layer and superficial layer used rubber modified polystyrene separately.
The above-mentioned resin material that superficial layer is used also can contain additives such as lubricant, antiblocking agent, antistatic additive, antioxidant, heat stabilizer, ultra-violet absorber, antiseptic, antifoggant.
The thickness of superficial layer is preferably in the scope of 1 μ m～15 μ m, more preferably in the scope of 3 μ m～10 μ m, further preferably in the scope of 3 μ m～8 μ m.If the thickness of superficial layer is in above-mentioned scope, then at closed container with in the purposes of cap member, when when airtight container is peeled off cap member, superficial layer destroys, and can make tack coat and superficial layer carry out splitting thus.By producing this splitting, no matter for the seal temperature of container body how cap member can show roughly certain peel strength, the Kaifeng of container becomes easy simultaneously.
In laminated body of the present invention, the thickness of superficial layer with respect to the ratio of substrate layer thickness preferably in 1/6～1/50 scope, more preferably in 1/6～1/30 scope.Thickness by making superficial layer in such scope, can make laminated body show conformality with respect to the ratio of substrate layer thickness.
＜tack coat 〉
Tack coat in the laminated body of the present invention is a layer as described below: it is configured between above-mentioned superficial layer and the substrate layer, is boning with above-mentioned superficial layer on the one surface, boning with above-mentioned substrate layer on another side.
Tack coat can be the individual layer tack coat, also can be the multi-layered bonded layer that comprises the layer more than 2 layers.The multi-layered bonded layer is mainly using the individual layer tack coat can not realize using under the situation of balance desired between the adhesion strength of the adhesion strength of tack coat and superficial layer and tack coat and substrate layer.Tack coat can be enumerated the resin combination that contains styrene series elastomer and/or ethene-unsaturated carboxylic acid ester copolymer.Wherein preferably use ethene-unsaturated carboxylic acid ester copolymer.
Here, styrene series elastomer can be enumerated hydrogenation styrene-butadiene block copolymer (SEBS), styrene-ethylene-propylene-based block copolymer (SEP, SEPS), hydrogenation SBR styrene butadiene rubbers (HSBR) etc.In addition, ethene-unsaturated carboxylic acid ester copolymer can be enumerated ethylene/methyl acrylate copolymer, ethylene/methacrylic acid methyl terpolymer, ethylene/ethyl acrylate copolymer, ethylene/methacrylic acid ethyl ester copolymer, the positive butyl ester copolymer of ethylene/acrylic acid, the positive butyl ester copolymer of ethylene/methacrylic acid etc.The content that comes from the construction unit of ethene in ethene/unsaturated carboxylic acid ester copolymer is preferably 60 quality %～80 quality %.
The above-mentioned resin combination that forms tack coat is except styrene series elastomer and ethene-unsaturated carboxylic acid ester copolymer, and can also contain vinylite, propylene resin, ester is thermoplastic resins such as resin, phenylethylene resin series.
The content of styrene series elastomer in the tack coat and ethene-unsaturated carboxylic acid ester copolymer is preferably 10 quality %～100 quality % respectively, more preferably 30 quality %～100 quality %.In addition, when with styrene series elastomer with ethene-when the unsaturated carboxylic acid ester copolymer share, its total content was preferably 20 quality %～100 quality %, 40 quality %～100 quality % more preferably.When with styrene series elastomer and ethene-when the unsaturated carboxylic acid ester copolymer share, (the styrene series elastomer: ethene-unsaturated carboxylic acid ester copolymer) be preferably 1: 9～9: 1 of content ratio separately, more preferably 2: 8～8: 2, more preferably 4: 6～6: 4.
Above-mentioned resin combination also can contain additives such as lubricant, antistatic additive, antioxidant, heat stabilizer, ultra-violet absorber, antiseptic, antifoggant.
The thickness of tack coat is preferably 5～100 μ m, more preferably 10～85 μ m, further preferred 10～70 μ m.Thickness by making tack coat can be made the laminated body with suitable interlaminar strength in above-mentioned scope.
Laminated body of the present invention can be at the layer (for example sealer or decorative layer) that has on the substrate layer more than 1 layer or 2 layers according to its purposes.Consider that from the angle of material recovery this layer that appends preferably contains thermoplastic resin.For example, in being intended to the laminated body of using with cap member as closed container, also can the configuration surface protective layer, this sealer be on the film that forms by thermoplastic resin, implemented printing wait decorate layer.Sealer is preferably formed by nylon, PETG, polypropylene, ethylene-vinyl alcohol copolymer etc.
The thickness of sealer is preferably in the scope of 5～50 μ m, more preferably in the scope of 10～40 μ m, further preferably in the scope of 12～35 μ m.
The manufacturing of＜laminated body 〉
Laminated body of the present invention can be by utilizing coextrusion present known processing method such as blow moulding, T pattern head method, pressurization make.In addition, also can make the film of each self-forming superficial layer, tack coat or substrate layer respectively, they are carried out the bonding laminated body that obtains by lamination etc.The film of each of laminated body layer usefulness for example can be made with the whole bag of tricks such as blow moulding, T pattern head method, pressurizations.
(cap member and closed container)
Cap member of the present invention can obtain by the shape that above-mentioned laminated body is shaped to regulation.For example can as described belowly obtain: with the laminated body stamping-out circular after, use make-up machine with the shape (for example truncated cone shape, cylindrical shape) of its drawing and forming for the peristome that can cover the closed container main body.This moment is with the mode moulding of surface level in the inboard.
Closed container of the present invention has cap member and the container body that is formed by laminated body of the present invention, this cap member on its superficial layer with the said vesse body seal.This closed container case as described below obtains: above-mentioned cap member so that its superficial layer covers with the mode that the peristome of closed container main body contacts, bonds above-mentioned superficial layer and closed container main body by the method for stipulating and obtains.The bonding of superficial layer is preferably undertaken by heat-sealing.
Container body is so long as can get final product with the container that superficial layer heat merges, and its material or shape are not particularly limited.The object lesson of container body can be enumerated sheet material, plate, cup, the bottle that is for example formed by thermoplastic resins such as styrenic, polyester, polyamide.Container body can be an individual layers, also can be the polylayer forest that each layer formed by thermoplastic resin.
Consider that from the angle of material recovery the preferred container body that contains the resin identical with the cap member superficial layer that uses more preferably uses the container body that contains with the same resin of superficial layer, tack coat, substrate layer.
Embodiment
Below, based on embodiment the present invention is described, but the invention is not restricted to these embodiment.
[embodiment 1]
As the resin material that forms superficial layer, the hybrid resin that use is made rubber modified polystyrene (Japanese polystyrene (strain) system H550, glass transition temperature is 100 ℃) 20 mass parts and polystyrene (Japanese polystyrene (strain) system G440K) 80 mass parts particle and mixed.
Below, this hybrid resin note is made thermoplastic resin B.
The resin material that forms tack coat can use particle as described below, and this particle uses barrel temperature and mold temperature to be set in 220 ℃ the φ of 45mm in the same way biaxial extruder, following 4 kinds of compositions are carried out melting mixing and obtains.
[1] (content that comes from the construction unit of methyl acrylate is 31 mass parts to ethylene-methyl acrylate copolymer for Sumitomo Chemical (strain) system, trade name ア Network リ Off ト: CG4002, melt flow rate (MFR) (190 ℃, 2.16kgf)=5g/10 minute) 55 mass parts;
[2] wire low density polyethylene (LDPE) (Sumitomo Chemical (strain) system, trade name ス ミ カ セ Application E:FV401, melt flow rate (MFR) (190 ℃, 2.16kgf)=4g/10 minute) 17 mass parts;
[3] styrene-isoprene block copolymer (Network ラ レ society system, trade name セ プ ト Application 2104) 3 mass parts;
[4] rubber modified polystyrene (Japanese polystyrene (strain) system H550, glass transition temperature is 100 ℃) 22 mass parts
The resin material that forms substrate layer uses the rubber modified polystyrene (Japanese polystyrene (strain) system H550, glass transition temperature is 100 ℃) that uses in above-mentioned tack coat.Below, this resin material note is made thermoplastic resin A.
Laminated body comes out to make by co-extrusion, and 3 kinds 3 layers coextrusion T pattern head casting processing machine with 3 extruders (extruder A, extruder B and extruder C) are used in described coextrusion.At first, in extruder A, add the thermoplastic resin B that superficial layer is used, in extruder B, add the resin combination that tack coat is used, in extruder C, add the thermoplastic resin A that substrate layer is used, and in each extruder, carry out melting mixing.Further each material is stacked by coextrusion, make substrate layer, tack coat, superficial layer are stacked gradually the laminated body that forms.The details of above-mentioned 3 extruders are as follows.
Extruder A:60mm φ, extruder B:60mm φ, extruder C:90mm φ
Layer formation=extruder A (superficial layer)/extruder B (tack coat)/extruder C (substrate layer)
(substrate layer)
At above-mentioned melting mixing with extrude, processing temperature is respectively that extruder A is that 220 ℃, extruder B are that 190 ℃, extruder C are 230 ℃, and mold temperature is 250 ℃.
Secondly, for the substrate layer surface of laminated body, carry out Corona discharge Treatment, so that wetting tension reaches 45dyn/cm.In the laminated body of gained, surface layer thickness is 5 μ m, and adhesive layer thickness is 10 μ m, and substrate layer thickness is 100 μ m, and the thickness of whole laminated body is 115 μ m.
Further, use the smart machine of Kang Jing (strain) system coating machine, sealer is set on substrate layer according to following program.At first; with aliphatic ester is that smears (with 10: 1: 15 mass ratio cooperate respectively the military field ケ ミ カ Le (strain) " タ ケ ラ Star Network A-515 " of host=Mitsui, the military field ケ ミ カ Le (strain) " タ ケ ネ-ト A-50 " of curing agent=Mitsui, ethyl acetate and fully mix the cohesiveness mixture that obtains) is coated on polyester film (ユ ニ チ カ (strain) system that forms sealer; trade name " PTMX "; thickness 12 μ m, width 330mm) one side.Then, make this film on its cohesiveness mixture coated face with the sided corona treatment face pressing of laminated body after, utilize 40 ℃ baking oven heating 24 hours, obtain the surface protection laminated body.
[embodiment 2]
Use is used to form the resin material (that is thermoplastic resin B) of superficial layer as the resin material that forms superficial layer in embodiment 1.
Use is used to form the resin material of tack coat as the resin material that forms tack coat in embodiment 1.
Use particle as the resin material that forms substrate layer, described particle is to use barrel temperature and mold temperature to be set in 220 ℃ the φ of 45mm in the same way biaxial extruder, following 4 kinds of compositions is carried out melting mixing obtain.
[1] (content that comes from the construction unit of methyl acrylate is 31 mass parts to ethylene-methyl acrylate copolymer for Sumitomo Chemical (strain) system, trade name ア Network リ Off ト: CG4002, melt flow rate (MFR) (190 ℃, 2.16kgf)=5g/10 minute) 5 mass parts
[2] wire low density polyethylene (LDPE) (Sumitomo Chemical (strain) system, trade name ス ミ カ セ Application E:FV202, melt flow rate (MFR) (190 ℃, 2.16kgf)=2g/10 minute) 3 mass parts;
[3] styrene-isoprene block copolymer (Network ラ レ society system, trade name セ プ ト Application 2104) 2 mass parts;
[4] rubber modified polystyrene (Japanese polystyrene (strain) system H550, glass transition temperature is 100 ℃) 90 mass parts
Laminated body is made by the inflation film moulding, and 3 kinds 3 layers coextrusion blowing processing machine with 3 extruders (extruder A, extruder B and extruder C) are used in described inflation film moulding.At first, in extruder A, add the thermoplastic resin B that superficial layer is used, in extruder B, add the resin material that tack coat is used, in extruder C, add the resin material that substrate layer is used, and in each extruder, carry out melting mixing.Further each material is stacked by coextrusion, then carry out blowing processing, make substrate layer, tack coat, superficial layer are stacked gradually the laminated body that forms.The details of above-mentioned blowing processing machine are as follows.
Mould diameter: 150mm φ
Die lip aperture: 2mm
Extruder A:50mm φ, extruder B:50mm φ, extruder C:50mm φ
Layer formation=extruder A (blowing inner tube layer)/extruder B (blowing pipe intermediate layer)/extruder C (blowing outer tube layer)
At above-mentioned melting mixing with extrude, processing temperature is respectively that extruder A is that 200 ℃, extruder B are that 190 ℃, extruder C are 220 ℃, and mold temperature is 210 ℃.
Secondly, for the substrate layer surface of laminated body, carry out Corona discharge Treatment, so that wetting tension reaches 45dyn/cm.In the laminated body of gained, surface layer thickness is 5 μ m, and adhesive layer thickness is 28 μ m, and substrate layer thickness is 37 μ m, and the thickness of whole laminated body is 70 μ m.Further, obtain the surface protection laminated body according to similarly to Example 1 program.
[comparative example 1]
Use is used to form the resin material (that is thermoplastic resin B) of superficial layer as the resin material that forms superficial layer in embodiment 1.
Use is used to form the resin material of tack coat as the resin material that forms tack coat in embodiment 1.
Use particle as the resin material that forms substrate layer, described particle uses barrel temperature and mold temperature to be set in 220 ℃ the φ of 45mm in the same way biaxial extruder, following 3 kinds of compositions are carried out melting mixing and gets.
[1] wire low density polyethylene (LDPE) (Sumitomo Chemical (strain) system, trade name ス ミ カ セ Application E:FV202, melt flow rate (MFR) (190 ℃, 2.16kgf)=2g/10 minute) 70 mass parts;
[2] styrene-isoprene block copolymer (Network ラ レ society system, trade name セ プ ト Application 2104) 10 mass parts;
[3] rubber modified polystyrene (Japanese polystyrene (strain) system H550) 20 mass parts
Use 3 kinds 3 layers coextrusion blowing processing machine similarly to Example 2, make substrate layer, adjoining course, the superficial layer laminated body that forms of lamination successively
In the laminated body of gained, surface layer thickness is 5 μ m, and adhesive layer thickness is 30 μ m, and substrate layer thickness is 40 μ m, and the thickness of whole laminated body is 75 μ m.Further, obtain the surface protection laminated body according to similarly to Example 1 program.
Utilize following method to estimate the stack membrane that obtains in embodiment 1,2 and the comparative example 1.The results are shown in table 1.
＜easy fissility 〉
As adherend, using from thickness is rubber modified polystyrene sheet (Japanese polystyrene society system, the trade name: the H640) sheet material that cuts out with the size of 70mm * 90mm of 400 μ m.The superficial layer of the cap member that make this adherend, gets with being cut by the laminated body that obtains in embodiment or the comparative example carries out driving fit, is 3kg/cm at pressure
2, the time be 1 second be under the condition of 160 ℃ or 180 ℃ with seal temperature, be that 20 millimeters band shape (direction parallel with the 90mm length direction of adherend) seals with width.With vertical with this banded hermetic unit and contain the mode of hermetic unit, and be that cut at the interval of 15mm with the width, make the test film of 15mm * 70mm.
Use smart machine (strain) オ of Japan one ト グ ラ Off AGS500D type tension stress testing machine, under 23 ℃, make cap member carry out 180 degree with 300mm/ minute draw speed and peel off, measure the peel strength of this moment from adherend.For easy fissility, if peel strength is in the scope of 5N/15mm～30N/15mm, then judge the balance excellence of the peel strength the when sealing intensity of adherend and cap member and cap member are peeled off, represent with mark " zero ", if peel strength is outside above-mentioned scope, the balance of then judging the peel strength the when sealing intensity of adherend and cap member and cap member are peeled off is poor, with mark " * " expression.
＜conformality test 〉
Prepare cap member and with width be the flange part of 3mm fence up have a polystyrene container made main body that internal diameter is the circular open of 62mm, it is that the circle of 70mm gets that described cap member is cut into diameter by the laminated body that will obtain in embodiment or the comparative example.The heat-sealing that cap member was carried out for 1 second at the flange part of container body with the loading of 180 ℃ temperature, 100kgf comes airtight, obtains closed container.
Then, catching an end of cap member with the state that container body is fixing, is that 45 ° direction is pullled towards the unstripped part with respect to cap member, and cap member is peeled off from container body, thereby, reach 50%～75% until the peristome ratio of container body with airtight container Kaifeng.Behind the Kaifeng, measure the knuckle of the cap member of drawing back by external force.If knuckle is more than 45 °, then judge the excellent shape retention property of this cap member, with mark " zero " expression, if knuckle, judges then that the conformality of this cap member is poor less than 45 °, with mark " * " expression.
Table 1
Industrial applicibility
Therefore the conformality of laminated body of the present invention (the particularly retentivity of buckling deformation and bending distortion) excellence when using this laminated body, can provide the cap member of the excellent shape retention property that is applicable to the closed container purposes. In addition, can provide the stability of sealing intensity or easy also excellent cap member of fissility. And laminated body of the present invention mainly designs in the such mode of the cap member that is applicable to closed container, but the purposes of laminated body of the present invention is not limited to the cap member of closed container.
Claims (8)
1. laminated body, it has superficial layer, substrate layer and tack coat, described tack coat is configured between this superficial layer and the substrate layer, on the one surface with above-mentioned superficial layer bonding, on another side with above-mentioned substrate layer bonding, it is characterized in that,
Above-mentioned superficial layer is formed by the resin material that contains thermoplastic resin, and constitutes a surface of this laminated body,
Above-mentioned substrate layer is formed by resin material, and this resin material contains the above amorphism thermoplastic resin of glass transition temperature in 50～150 ℃ of scopes of 40 quality %,
The thickness of above-mentioned substrate layer is 30 μ m～200 μ m, and the thickness of above-mentioned laminated body is 60 μ m～250 μ m.
2. laminated body according to claim 1, wherein, the above-mentioned thermoplastic resin in the above-mentioned superficial layer is the amorphism thermoplastic resin of glass transition temperature in 50～150 ℃ scope.
3. laminated body according to claim 2, wherein, above-mentioned amorphism thermoplastic resin in the above-mentioned substrate layer and the above-mentioned amorphism thermoplastic resin in the above-mentioned superficial layer are respectively that to be selected from phenylethylene resin series and ester be at least a kind of resin in the resin independently.
4. laminated body according to claim 1, wherein, the thickness of above-mentioned superficial layer with respect to the ratio of the thickness of above-mentioned substrate layer in 1/6～1/50 scope.
5. laminated body according to claim 1, wherein, above-mentioned tack coat contains at least a kind of polymer that is selected from styrene series elastomer and the ethene-unsaturated carboxylic acid ester copolymer.
6. closed container cap member, it is formed by each described laminated body in the claim 1～5.
7. closed container, it has cap member as claimed in claim 6 and container body, this cap member on its superficial layer with the said vesse body seal.
8. closed container according to claim 7, wherein, the said vesse main body contains and the above-mentioned non-plastic resin hot in nature of the above-mentioned superficial layer of formation is a resin of the same race, and described superficial layer is the superficial layer that constitutes the above-mentioned laminated body of above-mentioned cap member.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008063752A JP5380866B2 (en) | 2008-03-13 | 2008-03-13 | LAMINATE, CLOSED CLOSED CONTAINING THE SAME, AND CLOSED CONTAINER |
| JP2008-063752 | 2008-03-13 | ||
| PCT/JP2009/055373 WO2009113724A1 (en) | 2008-03-13 | 2009-03-12 | Laminate, cover member for hermetically sealed container using the same, and hermetically sealed container |
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| Publication Number | Publication Date |
|---|---|
| CN101970225A true CN101970225A (en) | 2011-02-09 |
| CN101970225B CN101970225B (en) | 2013-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009801084514A Expired - Fee Related CN101970225B (en) | 2008-03-13 | 2009-03-12 | Laminate, cover member for hermetically sealed container using same, and hermetically sealed container |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5380866B2 (en) |
| CN (1) | CN101970225B (en) |
| TW (1) | TW201000313A (en) |
| WO (1) | WO2009113724A1 (en) |
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| JP6801342B2 (en) * | 2016-09-29 | 2020-12-16 | 大日本印刷株式会社 | Sealant film with resealability and dead hold |
| JP2019181939A (en) * | 2018-03-30 | 2019-10-24 | 住化プラステック株式会社 | Laminate, lid material for closed vessel and closed vessel using the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0747643A (en) * | 1993-08-06 | 1995-02-21 | Dainippon Printing Co Ltd | Lid material |
| JP3255777B2 (en) * | 1993-10-19 | 2002-02-12 | 出光石油化学株式会社 | Laminated film and hermetically sealed container using the same |
| JP2000052505A (en) * | 1998-06-03 | 2000-02-22 | Nippon Polystyrene Kk | Easily unsealable container and member used therefor |
| JP4681802B2 (en) * | 2002-07-19 | 2011-05-11 | 出光ユニテック株式会社 | Multilayer sheet, thermoformed container, lid material, and easy-open packaging |
| US20040072002A1 (en) * | 2002-08-09 | 2004-04-15 | Tohru Hashioka | Heat-shrinkable polyolefin film |
| JP4758120B2 (en) * | 2005-03-18 | 2011-08-24 | 三菱樹脂株式会社 | Coextruded film for lid of distribution package |
-
2008
- 2008-03-13 JP JP2008063752A patent/JP5380866B2/en not_active Expired - Fee Related
-
2009
- 2009-03-12 TW TW98108055A patent/TW201000313A/en unknown
- 2009-03-12 WO PCT/JP2009/055373 patent/WO2009113724A1/en active Application Filing
- 2009-03-12 CN CN2009801084514A patent/CN101970225B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP5380866B2 (en) | 2014-01-08 |
| JP2009214524A (en) | 2009-09-24 |
| WO2009113724A1 (en) | 2009-09-17 |
| TW201000313A (en) | 2010-01-01 |
| CN101970225B (en) | 2013-10-30 |
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