Preform and its production manner for the multilayer light-gage container and production manner null of the multilayer light-gage container which uses that

摘要

PURPOSE: To constitute the above manufacture so that a multi-layer-structure preform of at least three layers and a multi-layer-structure vessel whose layer thicknesses are uniform can be manufactured inexpensively, especially a multi- layer and a multi-functional vessel possessing different functions such as gas barrier properties and odor-holding properties can be manufactured. ;CONSTITUTION: This is a preform which is molded into a multi-layer thin vessel by a method wherein the preform is extended by being molding-processed and the preform for the multi-layer thin vessel having an injected resin layer 3 formed between two sheet materials 1, 2 containing the resin layer having a specific function by injection molding.;COPYRIGHT: (C)1993,JPO&Japio