Connecting arrangement and process for connecting two...

A - Human Necessities – 61 – M

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A61M 39/10 (2006.01) C08J 5/12 (2006.01) F16L 13/007 (2006.01) F16L 47/20 (2006.01) A61J 1/05 (2006.01) A61M 39/16 (2006.01)

Patent

CA 2184869

A connecting arrangement and a process for its production, wherein the connecting arrangement consists of a first and a second separate part which are constituents of a medical system, in which at least one section of a surface made of a first plastic material on the first separate part and at least one section of a surface made of a second plastic material on the second separate part in a contact area which comprises at least sections of the surfaces of the first and second parts which are touching, form a firm and well-sealed connection with each other, this being obtainable by bringing the surfaces on the first and second separate parts to be connected to each other into contact with subsequent heat--treatment of the surfaces of the separate parts which are in contact, followed by cooling, characterised in that the first plastic material contains at least one polymer which is dimensionally stable at the temperature of heat-treatment, whereas the second plastic material contains at least one polymer which is no longer dimensionally stable at the temperature of heat-treatment, wherein neither plastic material contains any PVC or EVA. A force pressing the surfaces together is preferably applied during connection, wherein the polymer which is no longer dimensionally stable at the temperature of heat-treatment expediently tends to flow under the simultaneous effects of temperature and a compressive force.

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