| abstract |
A multi-layer tubing composed of a first layer, a second layer and an intermediate layer interposed between the first layer and the second layer. The first layer contains a first melt-processible thermoplastic such as polyamides, thermoplastic elastomers, and mixtures of such materials. The second layer contains a second melt-processible thermoplastic chemically dissimilar form the melt-processible thermoplastic employed in the first layer. The intermediate layer is made of a solidified melt-processible thermoplastic solution which contains the first melt-processible thermoplastic, the second melt-processible thermoplastic , and a polymeric compatibilizer, such that the first thermoplastic and the second thermoplastic exist as discretely discemable components dispersed relative to one another in an essentially non-homogenous manner. |