EP0180191A1
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EP
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Multilayered container
Assignee: Mitsubishi Gas Chemical Co Inc
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Filing: 1985-10-29
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Granted: —
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Expires: 2005-10-29
Abstract
Abstract A multilayered container comprising a wall portion consisting of thermoplastic gas barrier resin (resin B) layers and thermoplastic resin (resin A) layers, with the terminal portion of the mouth opening being of a thermoplastic resin (resin A), said wall portion being a multilayered structure formed by alternately laminating the resin A layers and the resin B layers in such a manner that there are at least two resin B layers, with the proviso that there is one more of the resin A layers than the number of the resin B layers, said structure having been biaxially oriented.
Inventors
- 👤 Senzo Shimizu
- 👤 Mitsuyasu Nagano
- 👤 Tsutomu Ishizeki
- 👤 Yoshiaki Momose
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 05:12
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B29; B29C; B29C45/00; B29C45/16; B29C45/1642; B29C45/1643; B32B27/34; B32B27/36; B29C2949/00; B29C2949/07; B29C2949/081; B29C2949/0811; B29C2949/082; B29C2949/0829; B29C2949/0861; B29C2949/0862; B29C2949/20; B29C2949/22; B29C2949/24; B29C2949/30; B29C2949/3016; B29C2949/3018; B29C2949/302; B29C2949/3022; B29C2949/3024; B29C2949/3026; B29C2949/3028; B29C2949/303; B29C2949/3032; B29C2949/3034; B29C2949/3036; B29C2949/3038; B29K; B29K2067/00; B29K2077/00; B29K2995/00; B29K2995/0037; B29K2995/0068; B29K2995/0069; B29L; B29L2009/00; B32B2250/00; B32B2250/05; B32B2250/42; B32B2307/00; B32B2307/50; B32B2307/514; B32B2307/518; B32B2439/00; B32B2439/40; B32B2439/60; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1379; Y10T428/1383; Y10T428/31504; Y10T428/31507; Y10T428/31725; Y10T428/31736; Y10T428/31786; Y10T428/31797; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/3192; Y10T428/31928
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
97 words
A multilayered container comprising a wall portion consisting of thermoplastic gas barrier resin (resin B) layers and thermoplastic resin (resin A) layers, with the terminal portion of the mouth opening being of a thermoplastic resin (resin A), said wall portion being a multilayered structure formed by alternately laminating the resin A layers and the resin B layers in such a manner that there are at least two resin B layers, with the proviso that there is one more of the resin A layers than the number of the resin B layers, said structure having been biaxially oriented.
Claim 2
Dependent Claim
97 words
A multilayered container comprising a wall portion consisting of thermoplastic gas barrier resin (resin B) layers and thermoplastic resin (resin A) layers, with the terminal portion of the mouth opening being of a thermoplastic resin (resin A), said wall portion being a multilayered structure formed by alternately laminating the resin A layers and the resin B layers in such a manner that there are at least two resin B layers, with the proviso that there is one more of the resin A layers than the number of the resin B layers, said structure having been biaxially oriented.
Claim 3
Dependent Claim
33 words
A multilayered container of claim 1 wherein said wall portion consists of 2 to 4 resin B layers and one more than the number of resin B layers of the resin A layers.
Claim 4
Dependent Claim
48 words
A multilayered container of claim 2 wherein said wall portion has a 5-layered structure in which the middle layer and the two outside layers are formed of resin A, while the two intermediate layers between the middle layer and the outside layers are formed of the resin B.
Claim 5
Dependent Claim
30 words
A multilayered container of any one of claims 1 to 3 wherein the resin A is a thermoplastic polyester resin, and the resin B is an m-xylylene group-containing polyamide resin.
Claim 6
Dependent Claim
27 words
A multilayered container of claim 3 wherein the ratios of the thicknesses of the outside layers, middle layer and intermediate layers are in the ranges of 50-70:30-50:3-20.
Claim 7
Dependent Claim
24 words
A multilayered container of any one of claims 1, 2 and 5 wherein the thickness of wall portion ranges from 200 to 500 microns.
References Cited (Backward Citations)
FR1548820A
Cited
US3576707A
Cited
US3578549A
Cited
FR2229527A1
Cited
FR2383091A1
Cited
GB2091629A
Cited
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