| 摘要 |
<p>Known PVC-free multilayer tubes (1) for medical purposes have at least two layers, of which a base layer A) (3) of a first plastic material is bonded with at least one connection layer B) (4) of a second plastic material. These known structures either require coupling agents to ensure a strong bond between the layers or may be connected with bags, connection pieces or connectors only by elaborate methods. According to the invention, strong adhesion of the layers to each other and simple formation of a strong and leakproof connection with bags or connectors made from polypropylene or polycarbonate during steam sterilisation is achieved by the first plastic material containing at least one polymer which is dimensionally stable at temperatures of .gtoreq. 121 .degree. C, while the second plastic material contains at least one polymer which is no longer dimensionally stable at temperatures of .gtoreq. 121.degree.C. A layer C) (2) is optionally present, the plastic material of which contains at least one polymer which is dimensionally stable at temperatures of .gtoreq. 121.degree.C. Use for medical purposes, in particular as a fluid line in dialysis, infusion or artificial feeding, primarily in connection with connectors or medical bags.</p> |
