Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
October 9, 2018
Patent Application Number
13901061
Date Filed
May 23, 2013
Patent Citations Received
Patent Primary Examiner
Patent abstract
A structure for and method of producing large diameter seal rings. Preferred embodiments of the present invention make use of a co-extruded “support” layer of a polymer showing better weld quality and strength. The use of a co-extruded support polymer bonded to the functional polymer can be used to improve the strength of the entire weld, including the weld of functional polymer layer.
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