JPH04298335A - Decomposable laminated packing material - Google Patents
Decomposable laminated packing materialInfo
- Publication number
- JPH04298335A JPH04298335A JP6337591A JP6337591A JPH04298335A JP H04298335 A JPH04298335 A JP H04298335A JP 6337591 A JP6337591 A JP 6337591A JP 6337591 A JP6337591 A JP 6337591A JP H04298335 A JPH04298335 A JP H04298335A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- heat
- decomposable
- degradable
- silica
- 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.)
- Pending
Links
- 239000000463 material Substances 0.000 title abstract description 4
- 238000012856 packing Methods 0.000 title abstract 2
- 239000010410 layer Substances 0.000 claims abstract description 54
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 36
- 230000004888 barrier function Effects 0.000 claims abstract description 27
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 18
- 239000012793 heat-sealing layer Substances 0.000 claims abstract description 15
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 11
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 11
- 229920006238 degradable plastic Polymers 0.000 claims description 6
- -1 polypropylene Polymers 0.000 abstract description 21
- 239000004743 Polypropylene Substances 0.000 abstract description 12
- 229920013716 polyethylene resin Polymers 0.000 abstract description 12
- 229920001155 polypropylene Polymers 0.000 abstract description 12
- 229920005989 resin Polymers 0.000 abstract description 10
- 239000011347 resin Substances 0.000 abstract description 10
- 241000894006 Bacteria Species 0.000 abstract description 3
- 239000000853 adhesive Substances 0.000 abstract description 3
- 230000001070 adhesive effect Effects 0.000 abstract description 3
- 239000002904 solvent Substances 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 229920000704 biodegradable plastic Polymers 0.000 abstract 1
- 239000005022 packaging material Substances 0.000 description 18
- 239000004698 Polyethylene Substances 0.000 description 8
- 229920000573 polyethylene Polymers 0.000 description 8
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 7
- 239000005977 Ethylene Substances 0.000 description 7
- 229910002091 carbon monoxide Inorganic materials 0.000 description 7
- 229920001577 copolymer Polymers 0.000 description 7
- 244000005700 microbiome Species 0.000 description 7
- 229920000728 polyester Polymers 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 229920002472 Starch Polymers 0.000 description 5
- 229940117927 ethylene oxide Drugs 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 239000008107 starch Substances 0.000 description 5
- 235000019698 starch Nutrition 0.000 description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 229920001610 polycaprolactone Polymers 0.000 description 4
- 239000004632 polycaprolactone Substances 0.000 description 4
- 239000002344 surface layer Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229920005604 random copolymer Polymers 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 238000007740 vapor deposition Methods 0.000 description 3
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 2
- WHBMMWSBFZVSSR-UHFFFAOYSA-M 3-hydroxybutyrate Chemical compound CC(O)CC([O-])=O WHBMMWSBFZVSSR-UHFFFAOYSA-M 0.000 description 2
- REKYPYSUBKSCAT-UHFFFAOYSA-N 3-hydroxypentanoic acid Chemical compound CCC(O)CC(O)=O REKYPYSUBKSCAT-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 2
- WHBMMWSBFZVSSR-UHFFFAOYSA-N R3HBA Natural products CC(O)CC(O)=O WHBMMWSBFZVSSR-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- YRKCREAYFQTBPV-UHFFFAOYSA-N acetylacetone Chemical compound CC(=O)CC(C)=O YRKCREAYFQTBPV-UHFFFAOYSA-N 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 229920001400 block copolymer Polymers 0.000 description 2
- IAQRGUVFOMOMEM-UHFFFAOYSA-N butene Natural products CC=CC IAQRGUVFOMOMEM-UHFFFAOYSA-N 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 2
- NQPDZGIKBAWPEJ-UHFFFAOYSA-N valeric acid Chemical compound CCCCC(O)=O NQPDZGIKBAWPEJ-UHFFFAOYSA-N 0.000 description 2
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 description 1
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical compound CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 229920000298 Cellophane Polymers 0.000 description 1
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- 244000017020 Ipomoea batatas Species 0.000 description 1
- 235000002678 Ipomoea batatas Nutrition 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 244000061456 Solanum tuberosum Species 0.000 description 1
- 235000002595 Solanum tuberosum Nutrition 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- GBAOBIBJACZTNA-UHFFFAOYSA-L calcium sulfite Chemical compound [Ca+2].[O-]S([O-])=O GBAOBIBJACZTNA-UHFFFAOYSA-L 0.000 description 1
- 235000010261 calcium sulphite Nutrition 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- BTVVNGIPFPKDHO-UHFFFAOYSA-K cerium(3+);octadecanoate Chemical compound [Ce+3].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O BTVVNGIPFPKDHO-UHFFFAOYSA-K 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- AMFIJXSMYBKJQV-UHFFFAOYSA-L cobalt(2+);octadecanoate Chemical compound [Co+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O AMFIJXSMYBKJQV-UHFFFAOYSA-L 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- SZRLKIKBPASKQH-UHFFFAOYSA-M dibutyldithiocarbamate Chemical compound CCCCN(C([S-])=S)CCCC SZRLKIKBPASKQH-UHFFFAOYSA-M 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000007765 extrusion coating Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 238000007733 ion plating Methods 0.000 description 1
- FRVCGRDGKAINSV-UHFFFAOYSA-L iron(2+);octadecanoate Chemical compound [Fe+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O FRVCGRDGKAINSV-UHFFFAOYSA-L 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 238000010169 landfilling Methods 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000010816 packaging waste Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- UCUUFSAXZMGPGH-UHFFFAOYSA-N penta-1,4-dien-3-one Chemical class C=CC(=O)C=C UCUUFSAXZMGPGH-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
- 229920000642 polymer Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 235000012015 potatoes Nutrition 0.000 description 1
- 235000019260 propionic acid Nutrition 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
- 229920001384 propylene homopolymer Polymers 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 238000007151 ring opening polymerisation reaction Methods 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 229940005605 valeric acid Drugs 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- PAPBSGBWRJIAAV-UHFFFAOYSA-N ε-Caprolactone Chemical compound O=C1CCCCCO1 PAPBSGBWRJIAAV-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Biological Depolymerization Polymers (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、ヒートシール可能であ
り、かつ、バリア性をも有する分解性積層包材に関する
。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a degradable laminated packaging material that can be heat-sealed and also has barrier properties.
【０００２】0002
【従来の技術】従来、食品、日用品、産業用部材の包装
に用いられるプラスチック製の包装材料の廃棄物処理は
焼却、埋め立てにより行われている。しかし、焼却する
場合、包装材料廃棄物の大きな燃焼エネルギーに耐え得
る耐高熱炉が必要になり、処理コストが高いものとなる
。2. Description of the Related Art Conventionally, waste disposal of plastic packaging materials used for packaging foods, daily necessities, and industrial parts has been carried out by incineration or landfill. However, incineration requires a high-temperature resistant furnace that can withstand the large amount of combustion energy of packaging waste, resulting in high processing costs.
【０００３】また、埋め立ての場合、プラスチック製の
包装材料は分解せずそのままの形態で地中に存在するの
で、埋め立て地の地盤が安定しないという問題がある。
さらに、地上に散乱した包装材料は、分解性がないため
半永久的にゴミとして残り、環境を損なうという問題が
ある。このような問題を解決するために、いわゆる分解
性を有するプラスチックを一部に用いた包材が提案され
ている。分解性プラスチックは、光や微生物により分解
されるので、環境の汚染等を防止するのに役立ち、近年
、特に脚光を浴びている。[0003] Furthermore, in the case of landfilling, there is a problem that the ground of the landfill site is unstable because plastic packaging materials do not decompose and remain in the ground as they are. Furthermore, since the packaging materials scattered on the ground are not degradable, they remain as garbage semi-permanently, which poses a problem of damaging the environment. In order to solve these problems, packaging materials that partially use so-called degradable plastics have been proposed. Since degradable plastics are decomposed by light and microorganisms, they are useful for preventing environmental pollution, and have been particularly in the spotlight in recent years.
【０００４】0004
【発明が解決しようとする課題】しかしながら、従来の
提案のものでは、包材機能としてガスバリア性やヒート
シール性を付与しようとすると、分解性を有しない材料
が混在され、ガスバリア性や、ヒートシール性の機能を
有しかつ、包材全体として分解性を備えるものは従来存
在していなかった。[Problems to be Solved by the Invention] However, in the conventional proposals, when trying to impart gas barrier properties and heat sealing properties as packaging material functions, materials that do not have degradability are mixed, making it difficult to provide gas barrier properties and heat seal properties. Until now, there has been no packaging material that has a functional function and is degradable as a whole.
【０００５】このように実情のもの本発明は創案された
ものであって、その目的はガスバリア性や、ヒートシー
ル性の機能を有しかつ、包材全体として分解性を備える
分解性積層包材を提供することにある。[0005] In view of the above-mentioned circumstances, the present invention was invented, and its purpose is to provide a degradable laminated packaging material that has gas barrier properties and heat sealing properties, and is also degradable as a whole. Our goal is to provide the following.
【０００６】[0006]
【課題を解決するための手段】上記課題を解決するため
に、本発明は内容物を収納する最内層に分解性のヒート
シール層を有し、その上に直接または中間層を介してシ
リカを蒸着したバリア層を有し、前記分解性のヒートシ
ール層は、分解性プラスチックであり、前記シリカを蒸
着したバリア層は、シリカを蒸着したポリビニルアルコ
ールであるように構成した。[Means for Solving the Problems] In order to solve the above problems, the present invention has a decomposable heat-sealing layer in the innermost layer for accommodating contents, and silica is applied directly or through an intermediate layer thereon. The decomposable heat-sealing layer is a degradable plastic, and the silica-deposited barrier layer is a silica-deposited polyvinyl alcohol.
【０００７】[0007]
【作用】本発明の分解性積層包材は、内容物を収納する
最内層に分解性のヒートシール層を有し、その上に直接
または中間層を介してシリカを蒸着したバリア層を有す
るので、ガスバリア性や、ヒートシール性の機能を有し
かつ、包材全体として分解性を備える。[Operation] The degradable laminated packaging material of the present invention has a degradable heat-sealing layer as the innermost layer for storing contents, and a barrier layer on which silica is vapor-deposited either directly or through an intermediate layer. , has gas barrier properties and heat sealing properties, and has degradability as a whole packaging material.
【０００８】[0008]
【実施例】以下、本発明の実施例について、図１乃至図
３を参照しつつ説明する。図１には本発明の一実施例の
分解性積層包材の部分断面図が示される。図１に示すご
とく、本発明の分解性積層包材１は、内容物を収納する
最内層に分解性のヒートシール層１０を有し、その上に
直接シリカを蒸着したバリア層４０を有する。Embodiments Examples of the present invention will be described below with reference to FIGS. 1 to 3. FIG. 1 shows a partial sectional view of a degradable laminated packaging material according to an embodiment of the present invention. As shown in FIG. 1, the degradable laminated packaging material 1 of the present invention has a degradable heat-sealing layer 10 as the innermost layer for accommodating contents, and has a barrier layer 40 on which silica is directly vapor-deposited.
【０００９】分解性のヒートシール層１０は、分解性プ
ラスチック、特に分解性ポリエチレン樹脂、分解性ポリ
プロピレン樹脂で形成される。分解性ポリエチレン樹脂
および分解性ポリプロピレン樹脂は、それぞれポリエチ
レンおよびポリプロピレンを主成分とし光や微生物によ
り分解され得る樹脂である。分解性ポリエチレン樹脂の
うち、光分解性のものとしては、エチレンと一酸化炭素
との共重合体等が挙げられる。このエチレン・一酸化炭
素共重合体は、カルボニル基の結合する２番目と３番目
の炭素間が光で開裂することにより分解すると言われて
いる。そして、分解速度は共重合体中の一酸化炭素の含
有量により調節することができる。通常、エチレン・一
酸化炭素共重合体の密度は０．８９〜０．９５ｇ／ｃｍ
３ 程度であり、一酸化炭素の含有量は０．１〜１０モ
ル％程度である。The degradable heat-sealing layer 10 is made of degradable plastic, particularly degradable polyethylene resin or degradable polypropylene resin. Degradable polyethylene resin and degradable polypropylene resin are resins that contain polyethylene and polypropylene as main components, respectively, and can be decomposed by light or microorganisms. Among the degradable polyethylene resins, photodegradable ones include copolymers of ethylene and carbon monoxide, and the like. This ethylene/carbon monoxide copolymer is said to be decomposed by light cleavage between the second and third carbons to which the carbonyl group is bonded. The decomposition rate can be controlled by the carbon monoxide content in the copolymer. Usually, the density of ethylene/carbon monoxide copolymer is 0.89 to 0.95 g/cm
3, and the carbon monoxide content is about 0.1 to 10 mol%.
【００１０】上述のようなエチレン・一酸化炭素共重合
体は、例えばエチレンと一酸化炭素とを温度２３０℃、
圧力２０００気圧程度の条件下で共存させることにより
製造することができる。また、光分解性の分解性ポリエ
チレン樹脂又はポリプロピレン樹脂として、ポリエチレ
ン（密度０．８７０〜０．９５０ｇ／ｃｍ３ 、溶融指
数（ＭＦＩ）０．４〜４０）やポリプロピレン（密度０
．８７〜０．９１ｇ／ｃｍ３ 、溶融指数（ＭＦＩ）０
．３〜５０）と有機酸金属塩との混合物を用いることも
できる。有機酸金属塩としては、ステアリン酸鉄、ステ
アリン酸セリウム、ステアリン酸コバルト等があり、酸
化鉄等の金属酸化物、アセチルアセトン、ジブチルジチ
オカーバメートとの錯体等が挙げられ、有機酸金属塩の
混合量は１〜５０００ｐｐｍ 程度が好ましい。また、
ビニルケトンとの共重合体を添加することもある。[0010] The above-mentioned ethylene/carbon monoxide copolymer can be prepared by, for example, mixing ethylene and carbon monoxide at a temperature of 230°C.
It can be produced by allowing them to coexist under conditions of a pressure of about 2000 atmospheres. In addition, as photodegradable polyethylene resin or polypropylene resin, polyethylene (density 0.870 to 0.950 g/cm3, melting index (MFI) 0.4 to 40) and polypropylene (density 0
．． 87-0.91g/cm3, melting index (MFI) 0
．． 3 to 50) and an organic acid metal salt can also be used. Examples of organic acid metal salts include iron stearate, cerium stearate, cobalt stearate, etc., and complexes with metal oxides such as iron oxide, acetylacetone, dibutyl dithiocarbamate, etc. is preferably about 1 to 5000 ppm. Also,
Copolymers with vinyl ketones may also be added.
【００１１】また、分解性ポリエチレン樹脂や分解性ポ
リプロピレン樹脂のうち、微生物分解性のものとしては
、ポリエチレンと、ポリカプロラクトン、デンプンおよ
び微生物により重合されるポリエステル等との混合物が
挙げられる。生分解性ポリエチレン樹脂に用いられるポ
リエチレンとしては、密度０．８７０〜０．９５０ｇ／
ｃｍ３ 、溶融指数（ＭＩ）０．４〜４０のエチレンの
単独重合体、もしくはプロピレン、ブテン、ヘキセン、
オクテン、４−メチルペンテン−１等の他のオレフィン
とのランダムあるいはブロック共重合体、さらには酢酸
ビニル、アクリル酸、メタクリル酸、アクリル酸メチル
、アクリル酸エチル、メタクリル酸メチル、無水マレイ
ン酸等のエチレン性不飽和基を有する単量体との共重合
体等が挙げられる。ポリプロピレンは、密度０．８７〜
０．９１ｇ／ｃｍ３ 、溶融指数（ＭＦＩ）０．３〜５
０のプロピレン単独重合体もしくは、エチレン、ブテン
等の他のオレフィンとのランダムあるいはブロック共重
合体が挙げられる。Among degradable polyethylene resins and degradable polypropylene resins, examples of those degradable by microorganisms include mixtures of polyethylene, polycaprolactone, starch, and polyester polymerized by microorganisms. The polyethylene used for biodegradable polyethylene resin has a density of 0.870 to 0.950 g/
cm3, a homopolymer of ethylene with a melting index (MI) of 0.4 to 40, or propylene, butene, hexene,
Random or block copolymers with other olefins such as octene and 4-methylpentene-1, as well as vinyl acetate, acrylic acid, methacrylic acid, methyl acrylate, ethyl acrylate, methyl methacrylate, maleic anhydride, etc. Examples include copolymers with monomers having ethylenically unsaturated groups. Polypropylene has a density of 0.87~
0.91g/cm3, melting index (MFI) 0.3-5
0 propylene homopolymers, or random or block copolymers with other olefins such as ethylene and butene.
【００１２】また、生分解性ポリエチレン樹脂に用いら
れるポリカプロラクトンは、ε−カプロラクトンの開環
重合により得られ、その重量平均分子量（Ｍｗ）は、通
常、４０，０００〜１００，０００程度である。また、
デンプンは、Ｄ−グルコースの重合体であり、ジャガイ
モ、サツマイモ、トウモロコシ、小麦等の茎や根から工
業的に製造されるものであり、その重量平均分子量（Ｍ
ｗ）は原料、製法により数万から数千万まで大きく変化
する。このようなデンプンの平均粒径は１０μｍ以下が
好ましい。[0012] Polycaprolactone used in the biodegradable polyethylene resin is obtained by ring-opening polymerization of ε-caprolactone, and its weight average molecular weight (Mw) is usually about 40,000 to 100,000. Also,
Starch is a polymer of D-glucose and is industrially produced from the stems and roots of potatoes, sweet potatoes, corn, wheat, etc., and its weight average molecular weight (M
w) varies greatly, from tens of thousands to tens of millions, depending on the raw materials and manufacturing method. The average particle size of such starch is preferably 10 μm or less.
【００１３】生分解性ポリエチレン樹脂に用いられる微
生物により重合されるポリエステルとしては、３−ヒド
ロキシブチレートと３−ヒドロキシバリレートとのラン
ダム共重合ポリエステル（例えば、英国Ｉ．Ｃ．Ｉ．社
により生産されている水素細菌にプロピオン酸を供給し
て得られるもの）や、水素細菌に吉草酸を供給して得ら
れる３−ヒドロキシブチレート主体のポリエステル等が
挙げられる。Polyesters polymerized by microorganisms used in biodegradable polyethylene resins include random copolymer polyesters of 3-hydroxybutyrate and 3-hydroxyvalerate (for example, polyesters produced by I.C.I., UK). (obtained by supplying propionic acid to hydrogen bacteria) and 3-hydroxybutyrate-based polyesters obtained by supplying valeric acid to hydrogen bacteria.
【００１４】上述のような生分解性ポリエチレンやポリ
プロピレン樹脂におけるポリカプロラクトン、デンプン
および微生物により重合されるポリエステルとの混合量
は、ポリエチレンまたはポリプロピレンと上記各混合成
分の合計を１００重量％として、それぞれ５〜８０重量
％が好ましい。上記各成分の混合量が５重量％未満では
、微生物分解性が不十分であり、また８０重量％を越え
ると強度的に弱くなってしまう。The mixing amount of polycaprolactone, starch, and polyester polymerized by microorganisms in the above-mentioned biodegradable polyethylene or polypropylene resin is 5% by weight, assuming that the total of the polyethylene or polypropylene and each of the above mixed components is 100% by weight. ~80% by weight is preferred. If the mixing amount of each of the above components is less than 5% by weight, the microbial degradability will be insufficient, and if it exceeds 80% by weight, the strength will be weakened.
【００１５】なお、ポリカプロラクトン、デンプンおよ
び微生物により重合されるポリエステルの各成分は２種
以上を用いてもよいが、その場合、混合量は合計で５〜
８０重量％の範囲となればよい。また、微生物分解性の
ポリエチレン樹脂の原料として前述の光分解性のポリエ
チレン樹脂を用いることにより、光分解性と微生物分解
性を兼ね備えた分解性ポリエチレン樹脂を得ることがで
きる。[0015] It should be noted that two or more of each component of polycaprolactone, starch, and polyester polymerized by microorganisms may be used, but in that case, the total mixing amount is 5 to 5.
The content may be in the range of 80% by weight. Furthermore, by using the photodegradable polyethylene resin described above as a raw material for the microbially degradable polyethylene resin, it is possible to obtain a degradable polyethylene resin that is both photodegradable and microbially degradable.
【００１６】なお、このような分解性のポリエチレンな
いしポリプロピレン樹脂を含有するヒートシール層１０
の中には、強度を上げるために、炭酸カルシウム、炭酸
マグネシウム、硫酸カルシウム、亜硫酸カルシウム、硫
酸バリウム、硫酸マグネシウム等の金属塩、ケイ酸ある
いはカオリン、タルク等のケイ酸塩、酸化チタン、酸化
亜鉛等の金属酸化物および水酸化アルミニウム、アルミ
ナ等のアルミニウム化合物等の無機質充填剤を含有させ
てもよい。さらに酸化防止剤、分解促進剤、安定剤、帯
電防止剤、界面活性剤等の各種添加剤を含有させてもよ
い。Note that the heat seal layer 10 containing such degradable polyethylene or polypropylene resin
Some of them contain metal salts such as calcium carbonate, magnesium carbonate, calcium sulfate, calcium sulfite, barium sulfate, and magnesium sulfate, silicates such as silicic acid or kaolin, and talc, titanium oxide, and zinc oxide. Inorganic fillers such as metal oxides such as aluminum hydroxide, aluminum compounds such as alumina, etc., may also be contained. Furthermore, various additives such as antioxidants, decomposition promoters, stabilizers, antistatic agents, and surfactants may be included.
【００１７】このような分解性のポリエチレンないしポ
リプロピレン樹脂を含有するヒートシール層１０は、分
解性を有することはもとより、ヒートシール性をも有す
る。従って、袋を形成するにあたりヒートシール層１０
同士を重ね合わせて融着することもできるし、また、例
えばポリオレフィン系の容器口部を封止する蓋材として
用いてもよい。The heat sealing layer 10 containing such a degradable polyethylene or polypropylene resin has not only degradability but also heat sealability. Therefore, when forming a bag, the heat seal layer 10
They can be stacked and fused together, or they can be used, for example, as a lid material for sealing the mouth of a polyolefin container.
【００１８】このようなヒートシール層１０の上にはシ
リカを蒸着したバリア層４０が形成される。バリア層４
０は包材の外部からのガス、水蒸気等の流通を防止する
機能を有する。本発明におけるバリア層４０は、ポリビ
ニルアルコール層４１と、シリカ層４２を有する。ポリ
ビニルアルコール層４１は分解性有機物のポリビニルア
ルコールが含有され、このポリビニルアルコール樹脂層
４１の上にシリカが蒸着され、シリカ層４２が形成され
る。このシリカ層４２の厚さは、通常、１００〜２００
０Å程度である。A barrier layer 40 made of evaporated silica is formed on the heat seal layer 10. Barrier layer 4
0 has the function of preventing the flow of gas, water vapor, etc. from the outside of the packaging material. The barrier layer 40 in the present invention includes a polyvinyl alcohol layer 41 and a silica layer 42. The polyvinyl alcohol layer 41 contains polyvinyl alcohol, which is a decomposable organic substance, and silica is deposited on the polyvinyl alcohol resin layer 41 to form a silica layer 42. The thickness of this silica layer 42 is usually 100 to 200 mm.
It is about 0 Å.
【００１９】ポリビニルアルコールは、ケン化度９９モ
ル％以上であり、このものの厚さは５〜５０μｍが好ま
しく、１軸または２軸方向に延伸してもかまわない。シ
リカの蒸着は、一酸化ケイ素または二酸化ケイ素等を蒸
着原料として、真空蒸着法、スパッタリング法またはイ
オンプレーティング法のいずれかの方法によって行う。The polyvinyl alcohol has a degree of saponification of 99 mol % or more, preferably has a thickness of 5 to 50 μm, and may be stretched uniaxially or biaxially. Vapor deposition of silica is performed using silicon monoxide, silicon dioxide, or the like as a vapor deposition raw material by any one of a vacuum evaporation method, a sputtering method, and an ion plating method.
【００２０】バリア層４０とヒートシール層１０とは、
例えば押し出しコーティング法等により融着される。次
いで、図２に基づいて本発明の第二実施例について説明
する。符号が同一である部材は前記第一実施例（図１）
のそれらと同一部材を示す。図２に示される第二実施例
と前記第一実施例（図１）の根本的な相違点はバリア層
４０とヒートシール層１０の接合にある。すなわち、第
二実施例は、ドライラミネート層５０によってバリア層
４０とヒートシール層１０とを接合している。この場合
には接合前にバリア層１０の接合面側４１ａに所定の印
刷ができるというメリットがある。なお、ドライラミネ
ート層５０は、溶剤形接着剤を均一に塗布し乾燥させた
後、加圧接着するいわゆるドライラミネート法により形
成される接着部である。The barrier layer 40 and the heat seal layer 10 are
For example, it is fused by an extrusion coating method or the like. Next, a second embodiment of the present invention will be described based on FIG. Components with the same symbols are those of the first embodiment (FIG. 1)
Shows the same parts as those in . The fundamental difference between the second embodiment shown in FIG. 2 and the first embodiment (FIG. 1) lies in the bonding between the barrier layer 40 and the heat seal layer 10. That is, in the second embodiment, the barrier layer 40 and the heat seal layer 10 are bonded together by the dry laminate layer 50. In this case, there is an advantage that a predetermined printing can be performed on the bonding surface side 41a of the barrier layer 10 before bonding. Note that the dry laminate layer 50 is an adhesive portion formed by a so-called dry laminate method in which a solvent-based adhesive is uniformly applied, dried, and then bonded under pressure.
【００２１】次いで、図３に基づいて本発明の第三実施
例について説明する。符号が同一である部材は前記第一
実施例（図１）のそれらと同一部材を示す。図３に示さ
れる第三実施例と前記第一実施例（図１）の根本的な相
違点はバリア層４０（特に、シリカ層４２）の上にドラ
イラミネート層５０を介して表面層６０を形成させたと
ころにある。表面層６０はポリビニルアルコールまたは
セロハンから形成される。本実施例の場合、表面層６０
の接合面側６０ａに所定の印刷ができるというメリット
がある。なお、図１〜図３に示されるバリア層４０の蒸
着面は逆方向（反対側）に設けるような構成としてもよ
い。Next, a third embodiment of the present invention will be explained based on FIG. Members with the same reference numerals indicate the same members as those in the first embodiment (FIG. 1). The fundamental difference between the third embodiment shown in FIG. 3 and the first embodiment (FIG. 1) is that a surface layer 60 is formed on the barrier layer 40 (in particular, the silica layer 42) via a dry laminate layer 50. It is in the place where it was formed. Surface layer 60 is formed from polyvinyl alcohol or cellophane. In the case of this embodiment, the surface layer 60
There is an advantage that a predetermined printing can be performed on the joint surface side 60a of the. Note that the vapor deposition surface of the barrier layer 40 shown in FIGS. 1 to 3 may be provided in the opposite direction (opposite side).
【００２２】[0022]
【発明の効果】本発明の分解性積層包材は、内容物を収
納する最内層に分解性のヒートシール層を有し、その上
に直接または中間層を介してシリカを蒸着したバリア層
を有し、前記分解性のヒートシール層は、分解性プラス
チックであり、前記シリカを蒸着したバリア層は、シリ
カを蒸着したポリビニルアルコールであるように構成し
たので、ガスバリア性や、ヒートシール性の機能を有し
かつ、包材全体として分解性を備えるという効果を奏す
る。Effects of the Invention The degradable laminated packaging material of the present invention has a degradable heat-sealing layer as the innermost layer for accommodating the contents, and a barrier layer on which silica is vapor-deposited either directly or through an intermediate layer. The degradable heat-sealing layer is made of degradable plastic, and the silica-deposited barrier layer is made of silica-deposited polyvinyl alcohol, so that it has gas barrier properties and heat-sealing properties. The packaging material as a whole has the effect of being degradable.
【図１】本発明の分解性積層包材の第一実施例を示す部
分断面図である。FIG. 1 is a partial cross-sectional view showing a first embodiment of the degradable laminated packaging material of the present invention.
【図２】本発明の分解性積層包材の第二実施例を示す部
分断面図である。FIG. 2 is a partial sectional view showing a second embodiment of the degradable laminated packaging material of the present invention.
【図３】本発明の分解性積層包材の第三実施例を示す部
分断面図である。FIG. 3 is a partial cross-sectional view showing a third embodiment of the degradable laminated packaging material of the present invention.
１０ ヒートシール層 ４０ バリア層 ４１ ポリビニルアルコール層 ４２ シリカ層 ５０ ドライラミネート層 ６０ 表面層 10 Heat seal layer 40 Barrier layer 41 Polyvinyl alcohol layer 42 Silica layer 50 Dry laminate layer 60 Surface layer
Claims (1)
ートシール層を有し、その上に直接または中間層を介し
てシリカを蒸着したバリア層を有し、前記分解性のヒー
トシール層は、分解性プラスチックであり、前記シリカ
を蒸着したバリア層は、シリカを蒸着したポリビニルア
ルコールであることを特徴とする分解性積層包材。1. A degradable heat-sealing layer having a degradable heat-sealing layer as the innermost layer for accommodating contents, and having a barrier layer on which silica is vapor-deposited directly or through an intermediate layer, the degradable heat-sealing layer is a degradable plastic, and the barrier layer on which silica is vapor-deposited is polyvinyl alcohol on which silica is vapor-deposited.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6337591A JPH04298335A (en) | 1991-03-27 | 1991-03-27 | Decomposable laminated packing material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6337591A JPH04298335A (en) | 1991-03-27 | 1991-03-27 | Decomposable laminated packing material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04298335A true JPH04298335A (en) | 1992-10-22 |
Family
ID=13227485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6337591A Pending JPH04298335A (en) | 1991-03-27 | 1991-03-27 | Decomposable laminated packing material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04298335A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002307595A (en) * | 2001-04-06 | 2002-10-23 | Unitika Ltd | Gas barrier laminated film |
-
1991
- 1991-03-27 JP JP6337591A patent/JPH04298335A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002307595A (en) * | 2001-04-06 | 2002-10-23 | Unitika Ltd | Gas barrier laminated film |
| JP4550309B2 (en) * | 2001-04-06 | 2010-09-22 | ユニチカ株式会社 | Gas barrier laminated film |
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