| abstract |
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 coaxially disposed within the first layer; and the membrane tube comprises: It is coaxially arranged in the port tube. The membrane tube has an outer layer, a core layer, and an inner layer. The first layer comprises a blend of (a) a first polyolefin, (b) a second polyolefin; (c) a high frequency sensitive polymer; and (d) a first thermoplastic elastomer, the second layer comprising: 2 thermoplastic elastomers. [Selection] Figure 2 |