Patent ID: 11905188
Assignee: SAINT-GOBAIN PERFORMANCE PLASTICS CORPORATION
Field: Other special machines (Mechanical engineering)
Classification: CPC C  B | IPC B  C

Claim 0:
1. A method of making an article comprises:
providing a single layer comprising a melt processable fluoropolymer, wherein the fluoropolymer comprises a copolymer of a tetrafluoroethylene and a perfluoroether heated to a temperature of 250° C. to 420° C. to extrude the fluoropolymer into a tube; and
cooling the tube at a temperature of less than 70° C. to provide the tube with optical clarity, an ultraviolet transmittance of at least about 50% when measured at a thickness of about inches to about 0.062 inches when exposed to ultraviolet radiation of about 200 nm to about 280 nm and a light transmission greater than 50% in the visible light wavelength range, wherein the article has a shore D durometer of less than about 90 at a temperature of about 23° C.+/−5° C.