초록 ▼

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 whic

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. The invention can be used for medical purposes, in particular as a fluid line in dialysis, infusion or artificial feeding, primarily in connection with connectors or medical bags.

대표청구항 ▼

[ We claim:] [1.] PVC-free multilayer tube for medical purposes having a first base layer A) of a first plastic material bonded to a second connection layer B) of a second plastic material, characterised in that the first plastic material contains at least one polymer, which withstands high temperat

[ We claim:] [1.] PVC-free multilayer tube for medical purposes having a first base layer A) of a first plastic material bonded to a second connection layer B) of a second plastic material, characterised in that the first plastic material contains at least one polymer, which withstands high temperature sterilisation at .gtoreq.121.degree. C. without deformation, and has a Shore D hardness of .ltoreq.32 having a residual stress at .gtoreq.121.degree. C. sufficient to form a press fit on a connection point, while the second plastic material contains at least one polymer, which during high temperature sterilisation at approximately 121.degree. C. or higher has a tendency to flow under the connection pressure arising during formation of the press fit, and has a Shore A hardness of .ltoreq.65, such that the first plastic material is dimensionally stable at temperature of .gtoreq.121.degree. C. and the second plastic material is no longer dimensionally stable at temperature of .gtoreq.121.degree. C.