PORT TUBE AND CLOSURE COMPOSITION, STRUCTURE AND ASSEMBLY FOR A FLOWABLE MATERIAL CONTAINER

摘要

The present invention provides a flowable material container closure assembly having a port tube and a membrane tube. The port tube has a first layer and a second layer, the first layer is a polymer blend and the second layer is disposed coaxially within the first layer; and the membrane tube is disposed coaxially within the port tube, the membrane tube has an outer layer, a core layer and an inner layer.