[특허]Retort-sterilizable laminated structure and process for preparation thereof

[미국특허] Retort-sterilizable laminated structure and process for preparation thereof 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B65D-000/00 B32B-015/08
출원번호	US-0055004 (1979-07-05)
우선권정보	JP-0080870 (1978-07-05); JP-0110647 (1978-09-11); JP-0131022 (1978-10-26)
발명자 / 주소	Katsura Tadahiko (Yokohama JPX) Suzuki Kenji (Yokohama JPX) Ito Senji (Ayase JPX)
출원인 / 주소	Toyo Seikan Kaisha Limited (Tokyo JPX 03)
인용정보	피인용 횟수 : 28 인용 특허 : 2

초록 ▼

Disclosed is a retort-sterilizable laminated structure comprising an aluminum foil or sheet, a heat-sealable crystalline propylene type resin layer formed on one surface of the aluminum foil or sheet and a heat-resistant resin layer formed on the other surface of the aluminum foil or sheet, wherein the aluminum foil or sheet is heat-fusion-bonded to said crystalline propylene type resin layer through a layer of a modified olefin resin having a degree of crystallization of 15 to 95% and a carbonyl group concentration of 1 to 600 meq/100 g of the polymer, in which the majority of the structural olefin units are propylene units and the minority of the structural olefin units are ethylene units. As the modified olefin polymer, a modified ethylene-propylene copolymer or a blend of a modified propylene type polymer with an ethylene type polymer is preferably employed.

대표청구항 ▼

A retort-sterilizable laminated structure comprising an aluminum foil or sheet, a heat-sealable crystalline propylene type resin layer formed on one surface of the aluminum foil or sheet and a heat-resistant resin layer formed on the other surface of the aluminum foil or sheet, wherein said aluminum foil or sheet is heat-fusion-bonded to said crystalline propylene type resin layer through a layer of a modified olefin resin, and wherein said modified olefin resin is a blend comprising (A) a crystalline modified propylene type polymer having a carbonyl group concentration of 1 to 600 meq/100 g of the polymer, in which at least 80 mole % of the structural olefin units are propylene units, and (B) a modifier selected from the group consisting of (i) low density polyethylene having a density of 0.915 to 0.940 g/cc, (ii) a crystalline modified ethylene type polymer having a carbonyl group concentration of 1 to 600 meq/100 g of the polymer, in which at least 80 mole % of the structural olefin units are ethylene units, and (iii) a combination of at least one member selected from said low density polyethylene (i) and said crystalline modified ethylene type polymer (ii) with at least one member selected from an ethylene-propylene copolymer rubber in which 20 to 80 mole % of the structural units are propylene units and a modified ethylene-propylene copolymer rubber having a carbonyl group concentration of 1 to 600 meq/100 g of the polymer, the amount of said modifier (B) having 3 to 30 parts by weight per 100 parts by weight of said crystalline modified propylene type polymer (A). A process for the preparation of laminated structures, which comprises applying a heat-sealable crystalline propylene type resin in the form of a layer to one surface of an aluminum foil or sheet and applying a heat-resistant resin in the form of a layer to the other surface of the aluminum foil or sheet, wherein a layer of a modified olefin resin formed by melt extrusion is interposed between said aluminum foil or sheet and the crystalline propylene type resin layer and said aluminum foil or sheet is heat-fusion-bonded to the crystalline propylene type resin layer through said modified olefin resin layer and wherein said modified olefin resin is a blend comprising (A) a crystalline modified propylene type polymer having a carbonyl group concentration of 1 to 600 meq/100 g of the polymer, in which at least 80 mole % of the structural olefin units are propylene units, and (B) a modifier selected from the group consisting of (i) low density polyethylene having a density of 0.915 to 0.940 g/cc, (ii) a crystalline modified ethylene type polymer having a carbonyl group concentration of 1 to 600 meq/100 g of the polymer, in which at least 80 mole % of the structural olefin units are ethylene units, and (iii) a combination of at least one member selected from said low density polyethylene (i) and said crystalline modified ethylene type polymer (ii) with at least one member selected from an ethylene-propylene copolymer rubber in which 20 to 80 mole % of the structural units are propylene units and a modified ethylene-propylene copolymer rubber having a carbonyl group concentration of 1 to 600 meq/100 g of the polymer, the amount of said modifier (B) being 3 to 30 parts by weight per 100 parts by weight of said crystalline modified propylene type polymer (A).

이 특허에 인용된 특허 (2) 인용/피인용 타임라인 분석

Stillman ; Nathan, Laminated packaging material.
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Shirayama Kenzo (Ehime JA) Kita Shinichiro (Ehime JA) Fujimoto Masanori (Ehime JA), Polyolefin composition and process for preparing the same.
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이 특허를 인용한 특허 (28) 인용/피인용 타임라인 분석

Jachec Kevin V. (Arlington Heights IL) Becker Peter D. (Roselle IL), Adhesive blends and composite structures.
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Jachec Kevin V. (Arlington Heights IL) Becker Peter D. (Roselle IL), Adhesive blends and composite structures.
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Cloutier, Joshua R.; Mizumura, Takeshi; Chang, Keunsuk P., Biaxially oriented polylactic acid film with high barrier.
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Dou, Shichen; Lee, Mark S.; Chang, Keunsuk P., Biaxially oriented polylactic acid film with improved heat seal properties.
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Dou, Shichen; Lee, Mark S.; Paulino, Claudio M.; Yokota, Nao; Chang, Keunsuk P., Biaxially oriented polylactic acid film with reduced noise level.
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Dou, Shichen; Lee, Mark S.; Paulino, Claudio M.; Yokota, Nao; Chang, Keunsuk P., Biaxially oriented polylactic acid film with reduced noise level and improved moisture barrier.
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Hoyt John M. (Cincinnati OH) Fischer Joseph (Cincinnati OH), Flexible film laminates and packaging.
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Krueger Duane A. (Neenah WI), Flexible packaging structure and process for making it.
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Murray, R. Charles, Flexible pouch and method of forming flexible pouch.
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Ringdahl Ulf,SEX ; Parsson Majlis,SEX, Food packaging and method for treating the same.
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Ouchi Isao (Iwaki JPX) Yusa Hideo (Iwaki JPX), Heat-resistant laminates.
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Hisazumi Nobuyuki (Tsuchiura JPX) Kahara Keisuke (Iwaki JPX) Matsukura Yoshihiro (Iwaki JPX), Heat-shrinkable laminate film and process to produce the same.
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Baird James C. (Cincinnati OH) Japikse Cornelis H. (Wyoming OH) Kussin Richard F. (Cincinnati OH), Instant coffee containing packet and method of forming.
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Kehe Alfred W. (Berkeley IL) Banich ; Sr. John N. (Chicago IL), Low oxygen barrier type plastic closure with an adhered gasketing compound and method of forming same.
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Walles Wilhelm E. (Freeland MI), Metallized plastic articles.
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Hsu Joseph C. (Neenah WI) Steen Robert A. (Appleton WI), Method for making package having oil-containing product.
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Li, Hewei; Wang, Congwei; Du, Bo; Jia, Chenggong; Jiao, Shirong; Ji, Chun, Method of preparing a composition in blister packages.
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Seta, Yasushi, Multi-layer film.
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Dou, Shichen; Paolilli, Tracy A.; Fitch, John J.; Brandmeier, Michael F.; Chang, Keunsuk P., Multi-layer high moisture barrier polylactic acid film.
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Paolilli, Tracy A.; Fitch, John J., Multi-layer high moisture barrier polylactic acid film.
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Paolilli, Tracy A.; Fitch, John J., Multi-layer high moisture barrier polylactic acid film.
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Paolilli, Tracy A.; Fitch, John J., Multi-layer high moisture barrier polylactic acid film.
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Maxwell, Jason R.; Borchardt, Michael G., Multilayer draw tape.
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Makilaakso, Antero, Packaging foil.
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Takano Koujiro,JPX ; Ishii Mamoru,JPX ; Mito Masaharu,JPX ; Akiyama Satoshi,JPX, Polypropylene-laminated steel sheet.
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Gregory Bertram H. (Aartselaar BEX), Process for high speed coating of substrates.
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Ohtsuki Akira (Kyobashi JPX) Ishino Hirokichi (Kyobashi JPX) Sakai Hiromu (Kyobashi JPX) Yamasoba Takahiko (Kyobashi JPX) Tsuchiko Susumu (Kyobashi JPX) Yoshino Takashi (Kyobashi JPX), Process for preparing laminates.
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Tamezawa Tadao (Chiba JPX) Moteki Yoshiji (Kitaadachi JPX), Retortable pouch and packaging material for the retortable pouch.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Retort-sterilizable laminated structure and process for preparation thereof 원문보기