Patent ID: 7445725
Filing Date: 2008-11-04
Classification: C08J

Abstract:
1. A method for making a multilayer composite having a first layer bonded to a second layer, comprising: (a) providing said first layer, said first layer having a first layer bonding surface; (b) providing a solidified halogenated polymer article comprising said second layer, said second layer having a second layer bonding surface adapted for bonding to said first layer bonding surface; (c) etching said second layer bonding surface with an electron beam to provide an activated bonding surface and thereby converting said solidified halogenated polymer article into an etched halogenated polymer article; (d) placing said etched halogenated polymer article in an inert environment at a predetermined temperature; (e) sustaining said etched halogenated polymer article in said inert environment at said predetermined temperature for at least 4 hours; and (f) compressing said first layer bonding surface against said activated bonding surface to provide said multilayer composite; (g) wherein said electron beam energizes said second layer bonding surface with sufficient energy for dislodging a plurality of halogen atoms from halogenated polymer of said surface and for generating thereby a set of residual free radical sites in polymeric chains of said surface upon conclusion of said etching; and (h) said predetermined temperature is not greater than room temperature.