Multi-layered vessels and method for molding the same

Details Multi-layered vessels and method for molding the same Multi-layered vessels and method for molding the same

B - Operations, Transporting

29

C

18/514, 190/26.1

B29C 49/22 (2006.01) B29C 45/16 (2006.01)

Patent

CA 1271435

7. ABSTRACT The present invention provides a multi-layered vessel whose sectional construction comprises at least a triple- layer obtained by blow or orientation blow molding an injection molded multi-layered parison, comprising a first resin forming a body, and a second resin having gas barrier properties or heat resistance more than that of the first resin, the second resin being present as an intermediate layer of the body within the first resin, the intermediate layer being smaller in wall thickness than an outer layer of the body and being one-sided toward the outer layer, the first layer being defined into an inner layer and an outer layer by the intermediate layer, the wall thicknesses of the outer layer and the inner layer being in the ratio of outer layer to inner layer, 1 : 1.50 or more, preferably, in the range of 1 : 3.50.

506204

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