| 摘要 |
PURPOSE:To provide a method, by which oxygen barrier resin layer at side wall and oxygen barrier resin layer at bottom are produced so as to form a layer continuous with each other by a method wherein the container concerned is manufactured by producing its bottom through the injection of resin layer having the same layer constitution as mentioned below under the condition that the side wall, which consists of oxygen barrier resin having moistureproof resin layer on both sides, of the container is housed in the cavity of the molds of an injection molder. CONSTITUTION:Firstly, moistureproof resins 21 and 22 are injected. Later, oxygen barrier resin 23, the flow speed of which is larger than those of the moistureproof resins 21 and 22, is injected. The flow front of the oxygen barrier resin 23 catches up with those of the moistureproof resins 21 and 22 and comes into contact with the side wall just when the oxygen barrier resin 23 appears at the flow front of resin layer, resulting in obtaining a container, in which the oxygen barrier resin layers 13 and 23 are connected to each other. |
