| 摘要 |
<p>1. A process for treating heat-shrinkable complex films of polymers comprising at least one layer which is firstly shrinkable and then crosslinkable and at least one layer having at least one of the properties of high mechanical strength, impermeability to gases, high chemical resistance, high optical quality, high heat resistance of the welds, in which the complex film issuing from the die of a coextrusion machine is firstly drawn while hot in two directions without additional supply of heat according to a drawing rate of between 10 and 100, then the product obtained is put into a solid form and is finally irradiated by ionising radiation belonging to the category made up of gamma and X-rays.</p> |
