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US 5,332,625 AGranted
Polymer with crosslinked surface zones
AssigneeMinnesota Mining and Manufacturing Company
InventorsDouglas S. Dunn, Edward C. Yu, Andrew J. Ouderkirk
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Abstract
The present invention is a surface modification process which provides a means of rapidly heating a thin layer of a polymer surface or a thin coating of material on a coated substrate and various surfaces produced by such a process.
Claims4
A polymeric polyester material comprising polyethyleneterephthalate, said material having a quasi-amorphous surface zone of 1 to 500 nm which is crosslinked to a depth of less than 100 nm and the bulk of said polymeric polyester material underneath each surface zone being uncrosslinked.
Dependencies are inferred from the claim text.