JPH0585350B2 - - Google Patents
Info
- Publication number
- JPH0585350B2 JPH0585350B2 JP2961489A JP2961489A JPH0585350B2 JP H0585350 B2 JPH0585350 B2 JP H0585350B2 JP 2961489 A JP2961489 A JP 2961489A JP 2961489 A JP2961489 A JP 2961489A JP H0585350 B2 JPH0585350 B2 JP H0585350B2
- Authority
- JP
- Japan
- Prior art keywords
- resin
- layer
- olefin
- vinyl alcohol
- olefin resin
- 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.)
- Expired - Fee Related
Links
- 229920005989 resin Polymers 0.000 claims description 75
- 239000011347 resin Substances 0.000 claims description 75
- 239000010410 layer Substances 0.000 claims description 67
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 claims description 41
- 229910052760 oxygen Inorganic materials 0.000 claims description 33
- 239000001301 oxygen Substances 0.000 claims description 33
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 32
- 235000015192 vegetable juice Nutrition 0.000 claims description 29
- 229920005672 polyolefin resin Polymers 0.000 claims description 28
- 235000015203 fruit juice Nutrition 0.000 claims description 27
- 230000004888 barrier function Effects 0.000 claims description 17
- 239000000203 mixture Substances 0.000 claims description 15
- 239000012790 adhesive layer Substances 0.000 claims description 9
- 150000001336 alkenes Chemical class 0.000 claims description 7
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- UFRKOOWSQGXVKV-UHFFFAOYSA-N ethene;ethenol Chemical compound C=C.OC=C UFRKOOWSQGXVKV-UHFFFAOYSA-N 0.000 description 22
- 239000004715 ethylene vinyl alcohol Substances 0.000 description 22
- 229920000098 polyolefin Polymers 0.000 description 22
- -1 polyethylene terephthalate Polymers 0.000 description 21
- 239000000796 flavoring agent Substances 0.000 description 16
- 235000019634 flavors Nutrition 0.000 description 16
- 239000004743 Polypropylene Substances 0.000 description 13
- 239000004698 Polyethylene Substances 0.000 description 12
- 229920001155 polypropylene Polymers 0.000 description 10
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 description 9
- 239000005020 polyethylene terephthalate Substances 0.000 description 9
- 229920000139 polyethylene terephthalate Polymers 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 7
- 229920001577 copolymer Polymers 0.000 description 6
- JARKCYVAAOWBJS-UHFFFAOYSA-N hexanal Chemical compound CCCCCC=O JARKCYVAAOWBJS-UHFFFAOYSA-N 0.000 description 6
- 229920001903 high density polyethylene Polymers 0.000 description 6
- 239000004700 high-density polyethylene Substances 0.000 description 6
- 239000004952 Polyamide Substances 0.000 description 5
- 229920001684 low density polyethylene Polymers 0.000 description 5
- 239000004702 low-density polyethylene Substances 0.000 description 5
- 229920002647 polyamide Polymers 0.000 description 5
- UAHWPYUMFXYFJY-UHFFFAOYSA-N beta-myrcene Chemical compound CC(C)=CCCC(=C)C=C UAHWPYUMFXYFJY-UHFFFAOYSA-N 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 4
- FXHGMKSSBGDXIY-UHFFFAOYSA-N heptanal Chemical compound CCCCCCC=O FXHGMKSSBGDXIY-UHFFFAOYSA-N 0.000 description 4
- XMGQYMWWDOXHJM-UHFFFAOYSA-N limonene Chemical compound CC(=C)C1CCC(C)=CC1 XMGQYMWWDOXHJM-UHFFFAOYSA-N 0.000 description 4
- CDOSHBSSFJOMGT-UHFFFAOYSA-N linalool Chemical compound CC(C)=CCCC(C)(O)C=C CDOSHBSSFJOMGT-UHFFFAOYSA-N 0.000 description 4
- 229920000573 polyethylene Polymers 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- 125000006839 xylylene group Chemical group 0.000 description 4
- ISKQADXMHQSTHK-UHFFFAOYSA-N [4-(aminomethyl)phenyl]methanamine Chemical compound NCC1=CC=C(CN)C=C1 ISKQADXMHQSTHK-UHFFFAOYSA-N 0.000 description 3
- 239000004840 adhesive resin Substances 0.000 description 3
- 229920006223 adhesive resin Polymers 0.000 description 3
- 150000001299 aldehydes Chemical class 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 238000000071 blow moulding Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 150000004985 diamines Chemical class 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 239000004800 polyvinyl chloride Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000001490 (3R)-3,7-dimethylocta-1,6-dien-3-ol Substances 0.000 description 2
- CDOSHBSSFJOMGT-JTQLQIEISA-N (R)-linalool Natural products CC(C)=CCC[C@@](C)(O)C=C CDOSHBSSFJOMGT-JTQLQIEISA-N 0.000 description 2
- WUOACPNHFRMFPN-SECBINFHSA-N (S)-(-)-alpha-terpineol Chemical compound CC1=CC[C@@H](C(C)(C)O)CC1 WUOACPNHFRMFPN-SECBINFHSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 2
- AMQJEAYHLZJPGS-UHFFFAOYSA-N N-Pentanol Chemical compound CCCCCO AMQJEAYHLZJPGS-UHFFFAOYSA-N 0.000 description 2
- GLUUGHFHXGJENI-UHFFFAOYSA-N Piperazine Chemical compound C1CNCCN1 GLUUGHFHXGJENI-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- FDLQZKYLHJJBHD-UHFFFAOYSA-N [3-(aminomethyl)phenyl]methanamine Chemical compound NCC1=CC=CC(CN)=C1 FDLQZKYLHJJBHD-UHFFFAOYSA-N 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- OVKDFILSBMEKLT-UHFFFAOYSA-N alpha-Terpineol Natural products CC(=C)C1(O)CCC(C)=CC1 OVKDFILSBMEKLT-UHFFFAOYSA-N 0.000 description 2
- VYBREYKSZAROCT-UHFFFAOYSA-N alpha-myrcene Natural products CC(=C)CCCC(=C)C=C VYBREYKSZAROCT-UHFFFAOYSA-N 0.000 description 2
- 229940088601 alpha-terpineol Drugs 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000002845 discoloration Methods 0.000 description 2
- JBKVHLHDHHXQEQ-UHFFFAOYSA-N epsilon-caprolactam Chemical compound O=C1CCCCCN1 JBKVHLHDHHXQEQ-UHFFFAOYSA-N 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 description 2
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 2
- 229930007744 linalool Natural products 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- GYHFUZHODSMOHU-UHFFFAOYSA-N nonanal Chemical compound CCCCCCCCC=O GYHFUZHODSMOHU-UHFFFAOYSA-N 0.000 description 2
- 235000015205 orange juice Nutrition 0.000 description 2
- 238000006864 oxidative decomposition reaction Methods 0.000 description 2
- HFPZCAJZSCWRBC-UHFFFAOYSA-N p-cymene Chemical compound CC(C)C1=CC=C(C)C=C1 HFPZCAJZSCWRBC-UHFFFAOYSA-N 0.000 description 2
- CFNJLPHOBMVMNS-UHFFFAOYSA-N pentyl butyrate Chemical compound CCCCCOC(=O)CCC CFNJLPHOBMVMNS-UHFFFAOYSA-N 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- TYFQFVWCELRYAO-UHFFFAOYSA-N suberic acid Chemical compound OC(=O)CCCCCCC(O)=O TYFQFVWCELRYAO-UHFFFAOYSA-N 0.000 description 2
- 235000000346 sugar Nutrition 0.000 description 2
- 150000008163 sugars Chemical class 0.000 description 2
- 150000003505 terpenes Chemical class 0.000 description 2
- 235000007586 terpenes Nutrition 0.000 description 2
- 229940088594 vitamin Drugs 0.000 description 2
- 229930003231 vitamin Natural products 0.000 description 2
- 235000013343 vitamin Nutrition 0.000 description 2
- 239000011782 vitamin Substances 0.000 description 2
- RDFMDVXONNIGBC-UHFFFAOYSA-N 2-aminoheptanoic acid Chemical compound CCCCCC(N)C(O)=O RDFMDVXONNIGBC-UHFFFAOYSA-N 0.000 description 1
- AKVBCGQVQXPRLD-UHFFFAOYSA-N 2-aminooctanoic acid Chemical compound CCCCCCC(N)C(O)=O AKVBCGQVQXPRLD-UHFFFAOYSA-N 0.000 description 1
- GVNWZKBFMFUVNX-UHFFFAOYSA-N Adipamide Chemical compound NC(=O)CCCCC(N)=O GVNWZKBFMFUVNX-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical group CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 1
- 235000007688 Lycopersicon esculentum Nutrition 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 240000003768 Solanum lycopersicum Species 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- GKXVJHDEWHKBFH-UHFFFAOYSA-N [2-(aminomethyl)phenyl]methanamine Chemical compound NCC1=CC=CC=C1CN GKXVJHDEWHKBFH-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 150000001408 amides Chemical group 0.000 description 1
- 229960002684 aminocaproic acid Drugs 0.000 description 1
- 229940072049 amyl acetate Drugs 0.000 description 1
- PGMYKACGEOXYJE-UHFFFAOYSA-N anhydrous amyl acetate Natural products CCCCCOC(C)=O PGMYKACGEOXYJE-UHFFFAOYSA-N 0.000 description 1
- 235000015197 apple juice Nutrition 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 235000020971 citrus fruits Nutrition 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 1
- MNWFXJYAOYHMED-UHFFFAOYSA-M heptanoate Chemical compound CCCCCCC([O-])=O MNWFXJYAOYHMED-UHFFFAOYSA-M 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- QZUPTXGVPYNUIT-UHFFFAOYSA-N isophthalamide Chemical compound NC(=O)C1=CC=CC(C(N)=O)=C1 QZUPTXGVPYNUIT-UHFFFAOYSA-N 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 150000002926 oxygen Chemical class 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920006122 polyamide resin Polymers 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
- 238000007127 saponification reaction Methods 0.000 description 1
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
- B65D1/0207—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by material, e.g. composition, physical features
- B65D1/0215—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by material, e.g. composition, physical features multilayered
Landscapes
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
- Packages (AREA)
- Laminated Bodies (AREA)
Description
［産業上の利用分野］
本発明は果汁や野菜ジユースのフレーバー味を
いつまでも残留させ、新鮮さを保つためのオレフ
イン系樹脂多層容器に関する。
［従来の技術］
果汁や野菜ジユース用の容器としては、ポリエ
チレンテレフタレート（PET）製、ポリ塩化ビ
ニル（PVC）製あるいはポリオレフイン（PO）
系樹脂製のものがあるが、PET容器は酸素を比
較的多く透過する、果汁や野菜ジユースの経時劣
化を促進する、水分を透過するなどの欠点があ
る。またPVC容器は、PET容器と同様に酸素を
比較的多く透過するため、果汁、野菜ジユースの
経時劣化を促進する。また産業廃棄物として燃焼
処理する場合HCLガスを産生して環境を悪化す
るという欠点がある。
ところで、PO容器は、その中に果汁や野菜ジ
ユースを充填しておくと、きわめて短時日のうち
にボケた風味になつてしまうという欠点がある。
この点について本発明者らは種々研究した結
果、果汁や野菜ジユースの風味を形成している味
や香りの源となる成分は、次のごとき香気成分で
あることが判明した。
その香気成分としては、柑橘類の果汁には、α
−ピネン、ミルセン、α−リモネン、ｐ−シメ
ン、リナロール、α−テルピネオールなどのテル
ペン類と、ヘキサナール、ヘプタナールなどのア
ルデヒド類が大量に含まれている。
リンゴ果汁には、アミルブチレート、アミルア
セテートなどのエステル類と、ヘキサナール、ノ
ナナールなどのアルデヒド類が大量に含まれてい
る。
トマトを含む野菜類のジユースには、同じくα
−ピネン、ミルセン、α−リモネン、リナロー
ル、α−テルピネオールなどのテルペン類と、ヘ
キサナール、ヘプタナールなどのアルデヒド類お
よびペンタノールなどのアルコール類が大量に含
まれている。
これらの香気成分が、果汁、野菜ジユース中に
どれだけ含有しているか、言い換えれば、どれだ
け残留しているかが、果汁、野菜ジユースの風味
の価値を決める重要な要因なのである。
この香気成分は果汁、野菜ジユースの製造直後
に最大の含有率を示すが、その後保存中に酸素、
紫外線などの影響により漸次酸化分解され、少し
づつ減少していくが、それにもまして、ポリエチ
レン、ポリプロピレンなどのポリオレフイン
（PO）系樹脂は、これらの香気成分を強力に収着
する性質を持つているので、接液面がPO樹脂で
被覆されたり、積層されたり、あるいはPO樹脂
のみで製造された容器に充填、密封された果汁、
野菜ジユースは、含有されている香気成分が極め
て短時間に著しく減少して、風味が損なわれるこ
とが判明した。
さらに、果汁、野菜ジユースは、酸素に暴露さ
れるとその含有成分である香気成分、糖類、ビタ
ミンなどが酸化分解、劣化を起こし、その色調が
変色し、その風味が失われる。
このような酸素は、容器のヘツドスペース中の
残存酸素からも供給されるが、容器の壁部を透過
して外部から酸素が侵入してくることが多い。
したがつて、これらの現像を極力小さくする為
に、従来より、酸素を透過しないガラスビンや金
属缶などの容器を採用し、満注充填、低温流通な
どの対応策をとつて来ている。
しかし、ガラスビンは重くて破損しやすく、金
属缶は中身が見えないなどの欠点があつた。
そして、近年の流通革命はガラスビンより軽く
て破損せず、易廃棄性を有しているプラスチツク
ス容器を採用する傾向を示し、中でも軽く透明、
光沢を有しているPET製容器がその主流になり
つつある。
しかしながら、前述のごとくPET容器は、酸
素を比較添透過しやすく、水分を透過するという
欠点あるため、果汁、野菜ジユースを短期間に変
色、劣化させてしまう欠点を有している。
［発明が解決しようとする課題］
果汁、野菜ジユースの風味を損なわないオレフ
イン系樹脂容器を提供することである。
［課題解決のための手段］
本発明者らは、この問題について鋭意研究を行
つた結果、ポリエチレン、ポリプロピレンなどの
ポリオレフイン（PO）系樹脂容器において、容
器の内面にエチレン−ビニルアルコール共重合体
樹脂の内層を設けることにより、果汁、野菜ジユ
ースのフレーバーがPO樹脂に収着されるのを防
止されることを見出だし、本発明を完成した。
本発明者らはさらに研究を進め、エチレン−ビ
ニルアルコール共重合体は、果汁、野菜ジユース
に触れると酸素遮断性が失われるため、内面にエ
チレン−ビニルアルコール共重合体を配合して
も、酸素による香気成分、糖類、ビタミンなどの
酸化分解や変色を防止できないことを解明し、
PO樹脂層の中間に、酸素遮断層を設けることに
よりこの酸素による問題を解決した。
また、容器が衝激を受けたり高圧の内容物の充
填などによつて、樹脂層の剥離が生じないよう
に、樹脂層間に接着性を付与することでこの問題
を解決した。
すなわち本発明は、
「１ 容器を形成する壁材が、オレフイン系樹脂
層と、エチレン−ビニルアルコール共重合体樹
脂層と、酸素遮断層との多層構造であつて、内
容物と触れる部位の内面には、エチレン−ビニ
ルアルコール共重合体樹脂層が配置されてお
り、エチレン−ビニルアルコール共重合体樹脂
層とオレフイン系樹脂層との間には接着剤層を
設け、オレフイン系樹脂層の中間の内容物と触
れない部位に、酸素遮断層が配置されている、
果汁、野菜ジユース用オレフイン系樹脂多層容
器。
２ オレフイン系樹脂層と酸素遮断層との間に、
接着剤層を設けた、特許請求の範囲第１項記載
の果汁、野菜ジユース用オレフイン系樹脂多層
容器。
３ オレフイン系樹脂層の少なくとも１層が、オ
レフイン系樹脂と、エチレン−ビニルアルコー
ル共重合体樹脂との混合物からなるオレフイン
系樹脂ブレンド物である、特許請求の範囲第１
項または第２項記載の果汁、野菜ジユース用オ
レフイン系樹脂多層容器。
４ オレフイン系樹脂ブレンド物が、特許請求の
範囲第１項記載の接着剤を含有するオレフイン
系樹脂ブレンド物である、特許請求の範囲第１
項または第２項記載の果汁、野菜ジユース用オ
レフイン系樹脂多層容器。」である。
本発明においては、果汁、野菜ジユースに直接
接触する容器の内面に、エチレン−ビニルアルコ
ール共重合体（以下EVOHと略称する）樹脂を
層設することにより、果汁、野菜ジユースのフレ
ーバーが収着されることが防止されるのである。
EVOH樹脂がこのようなフレーバーを収着しな
いということは、従来知られていなかつたことで
あり、本発明者らが始めて見出だした新知見であ
る。
PET樹脂やPVC樹脂がフレーバーを収着しに
くいことは知られている。しかしながら、これら
の樹脂はPO樹脂と共押出成形して、ボルトなど
の立体成形品に加工することが容易にできないと
いう致命的な欠点を有している。
これにひきかえ、EVOH樹脂はPO樹脂と共押
出しすることが容易にでき、PO樹脂の長所を生
かすことができるのである。
しかも、EVOH樹脂は酸素遮断効果も奏する
ので、PO樹脂の中間層として挾設する酸素遮断
層にも使用できる。勿論、この酸素遮断層に
EVOH樹脂以外の酸素遮断樹脂を用いてもよい。
これによつて、果汁、野菜ジユースの酸素によ
る劣化も防ぐことができるのである。
本発明で、容器を形成する壁材に使用されるオ
レフイン系樹脂としては、ポリプロピレン
（PP）、低密度ポリエチレン（LDPE）、高密度ポ
リエチレン（HDPE）、エチレン−プロピレン共
重合体（PPE）などである。
そのほか、本発明の壁材を構成するオレフイン
系樹脂ブレンド物としては、PO樹脂と、EVOH
樹脂の混合物からなるオレフイン系樹脂ブレンド
や、本容器のスクラツプ樹脂（以下SC樹脂とい
う）であるPO樹脂、EVOH樹脂、接着剤の混合
物からなるオレフイン系樹脂ブレンドなどが好適
に使用される。
本発明でフレーバー収着防止層として使用され
るエチレン−ビニルアルコール共重合体樹脂とし
ては、ビニルアルコール含有量が50〜85モル％エ
チレン−ビニルアルコール共重合体を用いること
が重要である。
ビニルアルコール含有量が50モル％よりも小さ
い場合には、果汁、野菜ジユースのフレーバーを
収着しやすくなり、85モル％を越えると水に対す
る溶解度が大きくなるとともに、溶融成形性が低
下するのでやはり本発明の目的に適さない。
このフレーバー収着防止層の厚さは、ブロー成
形した容器の内面に、少なくとも5μm以上あれば
良い。
本発明で酸素遮断用に使用される樹脂として
は、エチレン−ビニルアルコール共重合体樹脂や
メタキシリレン基含有ポリアミド樹脂などが挙げ
られる。
酸素遮断用樹脂としては、ビニルアルコール含
有量が50モル％、とくに55〜75モル％のエチレン
−ビニルアルコール共重合体がきわめて適当であ
る。即ち、エチレン−ビニルアルコール共重合体
は、酸素遮断性に最も優れた樹脂の１つであり、
その酸素遮断性や熱成形性はビニルアルコール単
位含有量に依存する。ビニルアルコール単位含有
量が50モル％よりも小さい場合には、上記範囲内
にある場合に比して、酸素や炭酸ガスに対する透
過度が大きく、酸素遮断性を付与するという本発
明の目的には適さない。一方この含有量が85モル
％を越えると、水蒸気に対する透過性が大きくな
ると共に、溶融成形性が低下するのでやはり本発
明の目的に適さない。
エチレン−ビニルアルコール共重合体は、エチ
レンと酢酸ビニルなどのビニルエステルとの共重
合体を、その鹸化度が96モル％以上、とくに99モ
ル％以上となるように鹸化することにより得られ
るが、この共重合体は、上記成分以外に、フレー
バー不収着性や酸素の遮断性を損なわない範囲内
で、例えば３モル％までの範囲内で、プロピレ
ン、ブチレン−１、イソブチレンなどの炭素数３
上のオレフインを共重合成分として含有していて
もよい。
エチレン−ビニルアルコール共重合体の分子量
は、フイルムを形成しうるに足る分子量であれば
特に制限はないが、一般には、フエノール85重量
％と水15重量％との混合溶媒中、30℃の温度で測
定して、固有粘度（IV）が0.07〜0.17／ｇの範
囲にあるのがよい、
他に酸素遮断用樹脂としては、キシリレン基含
有ポリアミドを中間層用の酸素遮断用樹脂として
使用する。
キシリレン基含有ポリアミドとは、ｍ−キシリ
レンジアミンおよび／またはｐ−キシリレンジア
ミンをジアミン成分として含むポリアミドであ
り、より具体的にはジアミン成分の35モル％以
上、とくに50モル％以上がｍ−キシリレンジアミ
ンおよび／またはｐ−キシリレンジアミンてであ
り、二塩基酸成分が脂肪族ジカルボン酸および／
または芳香族ジカルボン酸であり、所望により、
全アミド反復単位当り25モル％以下、とくに20モ
ル％以下のω−アミノカルボン酸単位を含む。
キシリレンジアミン以外のジアミン成分として
は、ヘキサメチレンジアミンのような脂肪族ジア
ミン、ピペラジンのような脂環族ジアミンナドヲ
挙げることができ、脂肪族ジカルボン酸として
は、アジピン酸、セバシン酸、スベリン酸など
が、また、芳香族ジカルボン酸としては、テレフ
タル酸、イソフタル酸などが挙げられる。
また、ω−アミノカルボン酸成分としては、ε
−カプロラクタム、アミノヘプタン酸、アミノオ
クタン酸などがあげられる。
キシリレン基含有ポリアミドの例は、これらに
限定されないが、ポリメタキシリレンアジパミ
ド、ポリメタキシリレンパカミド、ポリメタキシ
リレンスベラミド、ｍ−キシリレン／ｐ−キシリ
レンアジパミド共重合体、ｍ−キシリレンアジパ
ミド／イソフタラミド共重合体、ｍ−キシリレン
アジパミド／イソフタラミド／ε−アミノカプロ
ン酸共重合体などである。
用いるキシリレン基含有ポリアミドは、96重量
％硫酸を使用し１ｇ／100mlの濃度および25℃の
温度で測定して0.4〜4.5の相対粘度（ηre1）を有
することが望ましい。
上に例示した中間層用の酸素遮断用樹脂は、そ
れ単独で使用しうる他、２種以上の混物の形でも
使用しうる。
また、本発明では内外層ポリオレフインとの接
着性を向上させるため、接着剤樹脂とのドライブ
レンド物やメルトブレンド物を、中間層として射
出を行なうことができる。
本発明で使用できる接着剤用樹脂としては、無
水マレイン酸などがグラフト重合された変成オレ
フイン系樹脂（例えば、三井石油化学工業(株)商品
名：アドマー、三菱油化(株)商品名：モデイツク）
などである。接着剤用樹脂は、PO層とEVOH層
との間、PO層と酸素遮断層との間に介在させて、
各層間の接着性を付与することができる。
本発明の多層容器を作るには、前述まPO樹脂
の内面にはEVOH樹脂層を設け、中間層に酸素
遮断用樹脂層をもうけた有底バリソンを共押出し
によつて作製し、これを延伸ブローまたはダイレ
クトブローにより成形すればよい。
［実施例］
つぎに実施例と比較例をあげて本発明を説明す
る。
実施例 １
EVOH樹脂（ビニルアルコール含有量68モル
％）からなる内面層および中間層、ポリプロピレ
ン（PP）樹脂からなる外面層、スクラツプ
（SC）樹脂からなる中間層、並びにこれらの各層
の間に介在させた、無水マレイン酸変性ポリプロ
ピレン（Ｍ−PP）樹脂からなる接着剤層、とか
らなる４種７層（EVOH／Ｍ−PP／SC／Ｍ−
PP／EVOH／Ｍ−PP／PP）のパリソンを、共
押出成形し、この多層パリソンを溶融ブロー成形
によつて厚さ0.6mm、EVOH樹脂の内面層厚
10μm、口径40mm、胴径90mm、高さ300mmの多層容
器を成形した。
実施例 ２
EVOH樹脂（ビニルアルコール含有量56モル
％）からなる内面層、EVOH樹脂（ビニルアル
コール含有量68モル％）からなる中間層、高密度
ポリエチレン（HDPE）樹脂からなる外面層およ
び中間層、並びに、並びにこれらの各層の間に介
在させた、無水マレイン酸変性ポリエチレン（Ｍ
−PE）樹脂からなる接着剤層、とからなる４種
７層（EVOH／Ｍ−PE／HDPE／Ｍ−PE／
EVOH／Ｍ−PE／HDPE）のパリソンを、共押
出成形し、この多層パリソンを溶融ブロー成形し
て、実施例１と同様の多層容器を成形した。
実施例 ３
EVOH樹脂（ビニルアルコール含有量73モル
％）からなる内面層および中間層、低密度ポリエ
チレン（LDPE）樹脂からなる外面層、スクラツ
プ（SC）樹脂からなる中間層、並びにこれらの
各層の間に介在させた、無水マレイン酸変性ポリ
エチレン（Ｍ−PE）樹脂からなる接着剤層、と
からなる４種７層（EVOH／Ｍ−PE／SC／Ｍ−
PE／EVOH／Ｍ−PE／LDPE）のパリソンを、
共押出成形し、この多層パリソンを溶融ブロー成
形し、実施例１と同様の多層容器を成形した。
比較例 １
実施例１において、EVOH樹脂の内面層を形
成しなかつた以外は、実施例１と同様にして多層
容器を成形した。
比較例 ２
実施例１において、EVOH樹脂の内面層を形
成しなかつた以外は、実施例１と同様にして多層
容器を成形した。
比較例 ３
PP樹脂を溶融ブロー成形して、実施例１と同
じ形状の単層容器を成形した。
比較例 ３
PET樹脂を延伸ブロー成形して、実施例１と
同じ形状の単層容器を成形した。
比較試験
実施例１〜３、比較例１〜４の容器について、
オレンジ果汁および野菜ジユースのフレーバー不
収着性と耐酸素透過性を調べた。50％オレンジ果
汁および野菜ジユースについて評価結果は第１表
および第２表の通りであつた。
[Industrial Field of Application] The present invention relates to an olefin-based resin multilayer container for preserving the flavor of fruit juices and vegetable juices and preserving their freshness. [Prior art] Containers for fruit juice and vegetable juices are made of polyethylene terephthalate (PET), polyvinyl chloride (PVC), or polyolefin (PO).
PET containers are made of PET resin, but they have drawbacks such as allowing a relatively large amount of oxygen to pass through, accelerating the deterioration of fruit juices and vegetable juices over time, and allowing moisture to pass through. Also, like PET containers, PVC containers allow a relatively large amount of oxygen to pass through, which accelerates the deterioration of fruit juices and vegetable juices over time. Furthermore, when it is incinerated as industrial waste, it has the disadvantage of producing HCL gas, which degrades the environment. By the way, PO containers have the disadvantage that if they are filled with fruit juice or vegetable juice, the flavor will become dull in a very short period of time. As a result of various studies conducted by the present inventors on this point, it has been found that the following aroma components are the source of the taste and aroma that form the flavor of fruit juices and vegetable juices. As for its aromatic components, citrus fruit juice contains α
-Contains large amounts of terpenes such as pinene, myrcene, α-limonene, p-cymene, linalool, and α-terpineol, and aldehydes such as hexanal and heptanal. Apple juice contains large amounts of esters such as amyl butyrate and amyl acetate, and aldehydes such as hexanal and nonanal. Similarly, α is used for the use of vegetables including tomatoes.
- Contains large amounts of terpenes such as pinene, myrcene, α-limonene, linalool, and α-terpineol, aldehydes such as hexanal and heptanal, and alcohols such as pentanol. How much of these aroma components are contained in fruit juices and vegetable juices, or in other words, how much of them remain, is an important factor in determining the flavor value of fruit juices and vegetable juices. This aroma component shows its maximum content immediately after fruit juice and vegetable juice are produced, but after that, during storage, oxygen and
It gradually oxidizes and decomposes due to the influence of ultraviolet rays, etc., and decreases little by little, but polyolefin (PO) resins such as polyethylene and polypropylene have the property of strongly adsorbing these aroma components. Therefore, fruit juice whose wetted surfaces are coated or laminated with PO resin, or which are filled and sealed in containers made only of PO resin,
It has been found that the aroma components contained in vegetable juices are significantly reduced in a very short period of time, resulting in loss of flavor. Furthermore, when fruit juices and vegetable juices are exposed to oxygen, their aroma components, sugars, vitamins, etc., undergo oxidative decomposition and deterioration, resulting in discoloration and loss of flavor. Such oxygen can be supplied from residual oxygen in the head space of the container, but oxygen often enters from the outside through the walls of the container. Therefore, in order to minimize these developments, countermeasures have been taken such as using containers such as glass bottles and metal cans that do not allow oxygen to pass through, full filling, and low-temperature distribution. However, glass bottles were heavy and easily damaged, and metal cans had drawbacks such as the inability to see the contents. The recent revolution in distribution has shown a tendency to use plastic containers, which are lighter than glass bottles, unbreakable, and easy to dispose of.
Containers made of glossy PET are becoming mainstream. However, as mentioned above, PET containers have the drawback of being relatively easy to add and permeate oxygen and permeate moisture, which causes fruit juices and vegetable juices to discolor and deteriorate in a short period of time. [Problems to be Solved by the Invention] It is an object of the present invention to provide an olefin resin container that does not impair the flavor of fruit juices and vegetable juices. [Means for Solving the Problems] As a result of intensive research into this problem, the present inventors found that polyolefin (PO) resin containers such as polyethylene and polypropylene are coated with ethylene-vinyl alcohol copolymer resin on the inner surface of the container. They have discovered that by providing an inner layer of PO resin, the flavors of fruit juices and vegetable juices can be prevented from being absorbed by the PO resin, and have completed the present invention. The present inventors further conducted research and discovered that ethylene-vinyl alcohol copolymer loses its oxygen-blocking properties when it comes into contact with fruit juice and vegetable juice. It was discovered that the oxidative decomposition and discoloration of aroma components, sugars, and vitamins cannot be prevented by
This problem caused by oxygen was solved by providing an oxygen barrier layer between the PO resin layers. Furthermore, this problem was solved by providing adhesiveness between the resin layers to prevent the resin layers from peeling off when the container is subjected to impact or when filled with high-pressure contents. In other words, the present invention provides the following features: "1. The wall material forming the container has a multilayer structure of an olefin resin layer, an ethylene-vinyl alcohol copolymer resin layer, and an oxygen barrier layer, and the inner surface of the part that comes into contact with the contents An ethylene-vinyl alcohol copolymer resin layer is arranged in the , an adhesive layer is provided between the ethylene-vinyl alcohol copolymer resin layer and the olefin resin layer, and an adhesive layer is provided between the olefin resin layer and the olefin resin layer. An oxygen barrier layer is placed in areas that do not come into contact with the contents.
Olefin resin multilayer container for fruit juice and vegetable juice. 2 Between the olefin resin layer and the oxygen barrier layer,
An olefin-based resin multilayer container for fruit juice and vegetable juice according to claim 1, which is provided with an adhesive layer. 3. Claim 1, wherein at least one of the olefin resin layers is an olefin resin blend consisting of a mixture of an olefin resin and an ethylene-vinyl alcohol copolymer resin.
The olefin-based resin multilayer container for fruit juice and vegetable juice according to item 1 or 2. 4. Claim 1, wherein the olefin resin blend is an olefin resin blend containing the adhesive according to claim 1.
The olefin-based resin multilayer container for fruit juice and vegetable juice according to item 1 or 2. ”. In the present invention, the flavor of fruit juice and vegetable juice is sorbed by layering ethylene-vinyl alcohol copolymer (hereinafter abbreviated as EVOH) resin on the inner surface of the container that comes into direct contact with the fruit juice and vegetable juice. This prevents things from happening.
It was not previously known that EVOH resin does not adsorb such flavors, and is a new finding discovered for the first time by the present inventors. It is known that PET resin and PVC resin have difficulty adsorbing flavors. However, these resins have a fatal drawback in that they cannot be easily coextruded with PO resin and processed into three-dimensional molded products such as bolts. In contrast, EVOH resins can be easily coextruded with PO resins and take advantage of the advantages of PO resins. Furthermore, since EVOH resin also exhibits an oxygen blocking effect, it can also be used as an oxygen blocking layer interposed as an intermediate layer between PO resins. Of course, this oxygen barrier layer
Oxygen barrier resins other than EVOH resins may also be used. This also prevents deterioration of fruit juices and vegetable juices due to oxygen. In the present invention, the olefin resin used for the wall material forming the container includes polypropylene (PP), low density polyethylene (LDPE), high density polyethylene (HDPE), ethylene-propylene copolymer (PPE), etc. be. In addition, the olefin resin blends constituting the wall material of the present invention include PO resin and EVOH resin.
Olefin resin blends made of a mixture of resins, PO resins which are the scrap resins (hereinafter referred to as SC resins) of this container, EVOH resins, and adhesives are preferably used. As the ethylene-vinyl alcohol copolymer resin used as the flavor sorption prevention layer in the present invention, it is important to use an ethylene-vinyl alcohol copolymer having a vinyl alcohol content of 50 to 85 mol%. If the vinyl alcohol content is less than 50 mol%, it will easily adsorb the flavors of fruit juices and vegetable juices, and if it exceeds 85 mol%, the solubility in water will increase and the melt moldability will decrease. Not suitable for the purposes of the present invention. The thickness of this flavor sorption prevention layer on the inner surface of the blow-molded container may be at least 5 μm or more. Examples of the resin used for oxygen blocking in the present invention include ethylene-vinyl alcohol copolymer resin and metaxylylene group-containing polyamide resin. Ethylene-vinyl alcohol copolymers having a vinyl alcohol content of 50 mol %, particularly 55 to 75 mol %, are very suitable as oxygen-blocking resins. That is, ethylene-vinyl alcohol copolymer is one of the resins with the best oxygen barrier properties,
Its oxygen barrier properties and thermoformability depend on the vinyl alcohol unit content. When the vinyl alcohol unit content is less than 50 mol%, the permeability to oxygen and carbon dioxide gas is greater than when it is within the above range, and the purpose of the present invention, which is to provide oxygen barrier properties, is not met. Not suitable. On the other hand, if the content exceeds 85 mol%, the permeability to water vapor increases and the melt moldability decreases, which is not suitable for the purpose of the present invention. Ethylene-vinyl alcohol copolymer is obtained by saponifying a copolymer of ethylene and a vinyl ester such as vinyl acetate so that the degree of saponification is 96 mol% or more, particularly 99 mol% or more, In addition to the above-mentioned components, this copolymer may contain up to 3 mol% of carbon atoms such as propylene, butylene-1, isobutylene, etc., within a range that does not impair flavor non-sorption properties and oxygen barrier properties.
The above olefin may be contained as a copolymerization component. The molecular weight of the ethylene-vinyl alcohol copolymer is not particularly limited as long as it has a molecular weight sufficient to form a film, but it is generally used at a temperature of 30°C in a mixed solvent of 85% by weight of phenol and 15% by weight of water. It is preferable that the intrinsic viscosity (IV) is in the range of 0.07 to 0.17/g as measured by . In addition, as the oxygen barrier resin, xylylene group-containing polyamide is used as the oxygen barrier resin for the intermediate layer. The xylylene group-containing polyamide is a polyamide containing m-xylylene diamine and/or p-xylylene diamine as a diamine component, and more specifically, 35 mol% or more, especially 50 mol% or more of the diamine component is m- xylylene diamine and/or p-xylylene diamine, and the dibasic acid component is an aliphatic dicarboxylic acid and/or p-xylylene diamine.
or an aromatic dicarboxylic acid, optionally,
It contains up to 25 mol %, especially up to 20 mol %, of ω-aminocarboxylic acid units per total amide repeat unit. Examples of diamine components other than xylylene diamine include aliphatic diamines such as hexamethylene diamine and alicyclic diamines such as piperazine, and examples of aliphatic dicarboxylic acids include adipic acid, sebacic acid, and suberic acid. Further, examples of aromatic dicarboxylic acids include terephthalic acid and isophthalic acid. In addition, as the ω-aminocarboxylic acid component, ε
-Caprolactam, aminoheptanoic acid, aminooctanoic acid, etc. Examples of xylylene group-containing polyamides include, but are not limited to, polymethaxylylene adipamide, polymethaxylylenepacamide, polymethaxylylene sveramide, m-xylylene/p-xylylene adipamide copolymer, m -xylylene adipamide/isophthalamide copolymer, m-xylylene adipamide/isophthalamide/ε-aminocaproic acid copolymer, and the like. The xylylene group-containing polyamide used preferably has a relative viscosity (ηre1) of 0.4 to 4.5, measured using 96% by weight sulfuric acid at a concentration of 1 g/100 ml and a temperature of 25°C. The oxygen-blocking resins for the intermediate layer exemplified above can be used alone or in the form of a mixture of two or more. Furthermore, in the present invention, in order to improve the adhesion between the inner and outer polyolefin layers, a dry blend or melt blend with an adhesive resin can be injected as an intermediate layer. Adhesive resins that can be used in the present invention include modified olefin resins in which maleic anhydride or the like is graft-polymerized (for example, Mitsui Petrochemical Industries Co., Ltd. product name: ADMER, Mitsubishi Yuka Co., Ltd. product name: MODITSUK). )
etc. The adhesive resin is interposed between the PO layer and the EVOH layer, and between the PO layer and the oxygen barrier layer.
Adhesion between each layer can be imparted. To make the multilayer container of the present invention, a bottomed barison with an EVOH resin layer on the inner surface of the PO resin and an oxygen-blocking resin layer in the middle layer is produced by coextrusion, and then stretched. It may be molded by blowing or direct blowing. [Example] Next, the present invention will be described with reference to Examples and Comparative Examples. Example 1 Inner layer and intermediate layer made of EVOH resin (vinyl alcohol content 68 mol%), outer layer made of polypropylene (PP) resin, intermediate layer made of scrap (SC) resin, and interposed between these layers and an adhesive layer made of maleic anhydride-modified polypropylene (M-PP) resin (EVOH/M-PP/SC/M-
PP/EVOH/M-PP/PP) parison was co-extruded, and this multilayer parison was melt blow molded to a thickness of 0.6 mm and an inner layer of EVOH resin.
A multilayer container with a diameter of 10 μm, a diameter of 40 mm, a body diameter of 90 mm, and a height of 300 mm was molded. Example 2 An inner layer made of EVOH resin (vinyl alcohol content 56 mol%), an intermediate layer made of EVOH resin (vinyl alcohol content 68 mol%), an outer layer and an intermediate layer made of high density polyethylene (HDPE) resin, In addition, maleic anhydride-modified polyethylene (M
-PE) resin adhesive layer, and 7 layers of 4 types (EVOH/M-PE/HDPE/M-PE/
A multilayer container similar to that in Example 1 was formed by coextruding a parison of EVOH/M-PE/HDPE and melt blow molding this multilayer parison. Example 3 Inner layer and middle layer made of EVOH resin (vinyl alcohol content 73 mol%), outer layer made of low density polyethylene (LDPE) resin, middle layer made of scrap (SC) resin, and between these layers An adhesive layer made of maleic anhydride-modified polyethylene (M-PE) resin interposed in 7 layers of 4 types (EVOH/M-PE/SC/M-
PE/EVOH/M-PE/LDPE) parison,
Coextrusion molding was performed, and the multilayer parison was melt blow molded to form a multilayer container similar to that in Example 1. Comparative Example 1 A multilayer container was molded in the same manner as in Example 1, except that the inner layer of EVOH resin was not formed. Comparative Example 2 A multilayer container was molded in the same manner as in Example 1, except that the inner layer of EVOH resin was not formed. Comparative Example 3 A single-layer container having the same shape as in Example 1 was molded by melt blow molding a PP resin. Comparative Example 3 A single-layer container having the same shape as in Example 1 was formed by stretch-blow molding PET resin. Comparative Test Regarding the containers of Examples 1 to 3 and Comparative Examples 1 to 4,
The flavor non-sorption properties and oxygen permeability of orange juice and vegetable juice were investigated. The evaluation results for 50% orange juice and vegetable juice are shown in Tables 1 and 2.
【表】【table】
【表】【table】
Claims (1)
と、エチレン−ビニルアルコール共重合体樹脂層
と、酸素遮断層との多層構造体であつて、内容物
と触れる部位の内面には、エチレン−ビニルアル
コール共重合体樹脂層が配置されており、エチレ
ン−ビニルアルコール共重合体樹脂層とオレフイ
ン系樹脂層との間には接着剤層を設け、オレフイ
ン系樹脂層の中間の内容物と触れない部位に、酸
素遮断層が配置されている、果汁、野菜ジユース
用オレフイン系樹脂多層容器。 ２ オレフイン系樹脂層と酸素遮断層との間に、
接着剤層を設けた、特許請求の範囲第１項記載の
果汁、野菜ジユース用オレフイン系樹脂多層容
器。 ３ オレフイン系樹脂層の少なくとも１層が、オ
レフイン系樹脂と、エチレン−ビニルアルコール
共重合体樹脂との混合物からなるオレフイン系樹
脂ブレンド物である、特許請求の範囲第１項また
は第２項記載の果汁、野菜ジユース用オレフイン
系樹脂多層容器。 ４ オレフイン系樹脂ブレンド物が、特許請求の
範囲第１項記載の接着剤を含有するオレフイン系
樹脂ブレンド物である、特許請求の範囲第１項ま
たは第２項記載の果汁、野菜ジユース用オレフイ
ン系樹脂多層容器。[Scope of Claims] 1. The wall material forming the container is a multilayer structure consisting of an olefin resin layer, an ethylene-vinyl alcohol copolymer resin layer, and an oxygen barrier layer, and has a multilayer structure including an olefin resin layer, an ethylene-vinyl alcohol copolymer resin layer, and an oxygen barrier layer, and An ethylene-vinyl alcohol copolymer resin layer is arranged on the inner surface, an adhesive layer is provided between the ethylene-vinyl alcohol copolymer resin layer and the olefin resin layer, and an adhesive layer is provided between the olefin resin layer. An olefin-based resin multilayer container for fruit juice and vegetable juice, in which an oxygen barrier layer is placed in areas that do not come into contact with the contents. 2 Between the olefin resin layer and the oxygen barrier layer,
An olefin-based resin multilayer container for fruit juice and vegetable juice according to claim 1, which is provided with an adhesive layer. 3. The method according to claim 1 or 2, wherein at least one of the olefin resin layers is an olefin resin blend consisting of a mixture of an olefin resin and an ethylene-vinyl alcohol copolymer resin. Olefin resin multilayer container for fruit juice and vegetable juice. 4. The olefin resin blend for fruit juice and vegetable juice according to claim 1 or 2, wherein the olefin resin blend is an olefin resin blend containing the adhesive according to claim 1. Multilayer resin container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1029614A JPH02209238A (en) | 1989-02-10 | 1989-02-10 | Olefinic resin multilayer container for fruit juice and vegetable juice |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1029614A JPH02209238A (en) | 1989-02-10 | 1989-02-10 | Olefinic resin multilayer container for fruit juice and vegetable juice |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02209238A JPH02209238A (en) | 1990-08-20 |
| JPH0585350B2 true JPH0585350B2 (en) | 1993-12-07 |
Family
ID=12280951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1029614A Granted JPH02209238A (en) | 1989-02-10 | 1989-02-10 | Olefinic resin multilayer container for fruit juice and vegetable juice |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02209238A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996035618A1 (en) * | 1995-05-10 | 1996-11-14 | Tetra Laval Holdings & Finance S.A. | Packaging container and method of manufacturing the same |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE466149B (en) * | 1990-05-11 | 1992-01-07 | Plm Ab | CONTAINERS WITH PREPARED ACID BARRIER PROPERTIES, CONTAINING A PLASTIC MATERIAL CONSISTING OF A PARTIAL DIVIDED OR DECOMPATED POLYAMIDE, AND PROCEDURES FOR PRODUCING THEREOF |
| JP7391491B2 (en) * | 2016-08-15 | 2023-12-05 | 大日本印刷株式会社 | Composite container and its manufacturing method, and composite preform and its manufacturing method |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52103481A (en) * | 1976-02-27 | 1977-08-30 | Mitsui Petrochem Ind Ltd | Drawn laminated hollow articles and production thereof |
| JPS544681A (en) * | 1978-06-20 | 1979-01-13 | Toppan Printing Co Ltd | Multilayer container |
| JPS54110284A (en) * | 1978-02-17 | 1979-08-29 | Kuraray Co Ltd | Packaging material |
| JPS57163654A (en) * | 1981-03-27 | 1982-10-07 | Fujimori Kogyo Co | Packing material |
| JPS6056547A (en) * | 1983-09-08 | 1985-04-02 | 株式会社クラレ | Packing vessel having excellent resistance to cracking |
| JPS6121352A (en) * | 1984-07-10 | 1986-01-30 | 東洋製罐株式会社 | Tubular vessel |
| JPS633950A (en) * | 1986-05-16 | 1988-01-08 | インタ−ナシヨナル ペ−パ− コンパニ− | Heat sealable partition wall material for improved juice packaging |
| JPS6321031B2 (en) * | 1979-05-04 | 1988-05-02 | Hitachi Ltd | |
| JPS63237924A (en) * | 1987-03-27 | 1988-10-04 | Toyo Seikan Kaisha Ltd | Manufacture of multi-layer vessel |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0444357Y2 (en) * | 1986-07-24 | 1992-10-20 |
-
1989
- 1989-02-10 JP JP1029614A patent/JPH02209238A/en active Granted
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52103481A (en) * | 1976-02-27 | 1977-08-30 | Mitsui Petrochem Ind Ltd | Drawn laminated hollow articles and production thereof |
| JPS54110284A (en) * | 1978-02-17 | 1979-08-29 | Kuraray Co Ltd | Packaging material |
| JPS544681A (en) * | 1978-06-20 | 1979-01-13 | Toppan Printing Co Ltd | Multilayer container |
| JPS6321031B2 (en) * | 1979-05-04 | 1988-05-02 | Hitachi Ltd | |
| JPS57163654A (en) * | 1981-03-27 | 1982-10-07 | Fujimori Kogyo Co | Packing material |
| JPS6056547A (en) * | 1983-09-08 | 1985-04-02 | 株式会社クラレ | Packing vessel having excellent resistance to cracking |
| JPS6121352A (en) * | 1984-07-10 | 1986-01-30 | 東洋製罐株式会社 | Tubular vessel |
| JPS633950A (en) * | 1986-05-16 | 1988-01-08 | インタ−ナシヨナル ペ−パ− コンパニ− | Heat sealable partition wall material for improved juice packaging |
| JPS63237924A (en) * | 1987-03-27 | 1988-10-04 | Toyo Seikan Kaisha Ltd | Manufacture of multi-layer vessel |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996035618A1 (en) * | 1995-05-10 | 1996-11-14 | Tetra Laval Holdings & Finance S.A. | Packaging container and method of manufacturing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02209238A (en) | 1990-08-20 |
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