[특허]Resinous laminates having improved gas permeation and resistance to delamination

Resinous laminates having improved gas permeation and resistance to delamination 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B32B-027/08 C08G-041/04
출원번호	US-0388805 (1973-08-16)
우선권정보	JA-0082348 (1972-08-17); JA-0098993 (1972-10-04); JA-0076138 (1973-07-07)
발명자 / 주소	Hirata Sadao (Yokohama JA) Hirata Syunsaku (Yokohama JA) Suzuki Toru (Yokosuka JA) Kishimoto Akira (Tokyo JA)
출원인 / 주소	Toyo Seikan Kaisha Limited (Tokyo JA 03)
인용정보	피인용 횟수 : 28 인용 특허 : 0

초록 ▼

A resin laminate structure comprising a layer of a polymer selected from the group consisting of polyolefins and saponified products of ethylene-vinyl acetate copolymers and a layer of a blend comprising (A) a polyolefin and (B) a saponified product of an ethylene-vinyl acetate copolymer having an ethylene content of 25 to 50 mole % and a degree of saponification of at least 96% at an A:B mixing weight ratio ranging from 98:2 to 2:98, said two layers being laminated so that they are adjacent to each other.

대표청구항 ▼

A resin laminate structure comprising at least one layer (a) of a polyolefin and at least one layer (b) consisting essentially of (A) a polyolefin and (B) a saponified product of ethylene-vinyl acetate copolymers having an ethylene content of 25 to 50 mole % and a degree of saponification of at least 96% at an A : B mixing weight ratio ranging from 90 : 10 to 10 : 90, said two layers being laminated by means of co-extrusion without an adhesive so that said layer (a) and said layer (b) are adjacent to each other, wherein said layer (b) is of such a multi-layer laminar structure that the polymer composition is different with respect to the thickness direction but substantially identical with respect to the plane direction and that when the layer (b) is divided into at least two layers in the direction of the thickness, at least that divided layer adjacent to said layer (a) contains predominantly the polyolefin (A), namely contains said saponified product in an amount expressed by the following formula M2 =m2X wherein X stands for the average content (% by weight) of the saponified product of the ethylene-vinyl acetate copolymer in the said layer (b), m2 is a number of from 0 to 0.95, and M2 is the content (% by weight) of said saponified product in said specific divided layer, and an adjacent divided layer contains predominantly the saponified product of the ethylene-vinyl acetate copolymer (B), namely contains the saponified product in an amount expressed by the following formula M1 =m1X wherein X is as defined above, m1 is a number of at least 1.05, and M1 is the content (% by weight) of said saponified product in said specific divided layer. A resin laminate structure comprising two surface layers of a polyolefin and an intermediate layer of a blend consisting essentially of (A) said polyolefin, (B) a saponified product of an ethylene-vinyl acetate copolymer having an ethylene content of 25 to 50 mole % and a degree of saponification of at least 96% and (C) a thermoplastic polymer containing a carbonyl group at the main or side chain thereof at a concentration of 120 to 1400 milliequivalents per 100 g of the polymer, the weight ratio of B : C being within 95 : 5 to 50 : 50, said polyolefin (A) being present in an amount of 5 to 100 parts by weight per 100 parts by weight of the sum of said polymers (B) and (C), and said two surface layers and said intermediate layer being laminated by means of co-extrusion without an adhesive so that said two surface layers and said intermediate layer are adjacent to each other, wherein said intermediate layer has such a multi-layer laminar structure that the polymer composition is different with respect to the thickness direction but substantially identical with respect to the plane direction and that when the intermediate layer is divided into three layers in the direction of the thickness, the two divided layers adjacent to said polyolefin surface layers each contain predominantly the polyolefin (A) and the carbonyl group-containing thermoplastic polymer (C), namely contain said saponified product (B) in an amount expressed by the following formula M1 =m1X wherein X stands for the average content (% by weight) of the ethylene-vinyl acetate copolymer saponified product in the blend layer, m1 is a number of from 0 to 0.95, and M1 is the content (% by weight) of said saponified product in said divided outer layer, and the divided inner layer contains predominantly the ethylene-vinyl acetate copolymer saponified product (B), namely contains said saponified product (B) in an amount expressed by the formula M2 =m2X wherein X is as defined above, m2 is a number of at least 1.05 and M2 is the content (% by weight of said saponified product in said divided inner layer.

이 특허를 인용한 특허 (28)

Ofstein David E. (Williamsburg VA), Blends of amorphous nylon and ethylene vinyl alcohol copolymers and laminates and containers made therefrom.
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Marshall Jeffrey D. (Palmyra NY), Laminar thermoplastic film constructions.
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Lemstra Pieter J. (Brunssum NLX) Meyer Henricus E. H. (Obbicht NLX) Burlet Rudolf J. H. (Geleen NLX), Laminates on the basis of polypropylene and process for preparing such laminates.
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Gellert Jobst Ulrich,CAX ; Babin Denis L.,CAX, Method of making an injection molding melt dividing bushing.
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Yamada Muneki (Ebina JPX) Hirata Sadao (Yokohama JPX) Hirata Shunsaku (Yokohama JPX) Kishimoto Akira (Yokohama JPX) Kano Fumio (Kamakura JPX) Yazaki Jinichi (Tokyo JPX) Suzuki Toru (Yokosuka JPX), Molded container having wall composed of oriented resin blend.
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Knott ; II Jack E. (Menasha WI) Wang James C. (Appleton WI), Multi-layer barrier film.
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Schroeder George O. (Appleton WI), Multi-layer barrier film.
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Sumi Takehiko (Kyoto JPX) Oshige Yoshinobu (Kyoto JPX) Koike Yoshio (Kyoto JPX) Matsumoto Kazuya (Kyoto JPX), Multi-layer extruded article.
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Newsome David L. (Neenah WI), Oriented films of blends of EVOH copolymer.
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Knott ; II Jack E. (Menasha WI) Koschak Matthew S. (Appleton WI) Adams John P. (Appleton WI), Package for food products.
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Yamada ; Muneki ; Hirata ; Sadao ; Kishimoto ; Akira ; Hirata ; Shunsaku ; Suzuki ; Toru ; Kano ; Fumio, Packaging materials having excellent gas permeation resistance and process for preparation thereof.
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Hock, Mark R.; Riffer, David B., Plastic closure with compression molded barrier liner.
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Mark R. Hock ; David B. Riffer, Plastic closure with compression molded barrier liner.
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David B. Riffer, Plastic closure with compression molded sealing/barrier liner.
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Riffer, David B., Plastic closure with compression molded sealing/barrier liner.
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Riffer, David B., Plastic closure with compression molded sealing/barrier liner.
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Schmukler Seymour (Palatine IL) Shida Mitsuzo (Barrington IL) Machonis ; Jr. John (Schaumburg IL), Polyvinyl alcohol alloys and method of making the same.
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Schmukler Seymour (Palatine IL) Shida Mitsuzo (Barrington IL) Machonis ; Jr. John (Schaumburg IL), Polyvinyl alcohol alloys and method of making the same.
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Inoue Takayuki (Yokkaichi JA) Kakizaki Tetsuji (Yokkaichi JA) Ochiumi Masahide (Yokkaichi JA), Process for preparing laminated resin product.
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Miharu Kenji,JPX ; Tachino Hitoshi,JPX, Thermoplastic resin composition and its use.
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Yazaki Jinichi (Tokyo JPX) Tamura Akihiko (Chigasaki JPX), Vessel comprising resin composition.
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A	생활필수품
A62	인명구조; 소방(사다리 E06C)
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A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Resinous laminates having improved gas permeation and resistance to delamination 원문보기

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