Patent ID: 8801991
Filing Date: 2014-08-12
Classification: B29C,B29K,B29L,B32B,Y10T

Abstract:
1. A method of molding a multi-layer article from a first polymeric material and a second polymeric material, the method comprising: injecting the first polymeric material into a mold cavity configured to form a resulting multi-layer article having an open end opposed to a closed end and a flange disposed at the open end with the flange including a heat sealable zone of the resulting multi-layer article; injecting the second polymeric material into the mold cavity to form an inner layer and an outer layer of the resulting multi-layer article; and positioning the first polymeric material in the heat sealable zone of the resulting multi-layer article to maintain integrity of a resulting interior layer of the resulting multi-layer article during a heat sealing operation by co-injecting the first polymeric material along a flow streamline offset from a zero velocity gradient of a combined flow of the first and second polymeric materials.