Browse Prior Art Database

BONDING PROCESS FOR FLUOROPOLYMER SLEEVES

IP.com Disclosure Number: IPCOM000024525D
Original Publication Date: 1980-Oct-31
Included in the Prior Art Database: 2004-Apr-02
Document File: 2 page(s) / 51K

Publishing Venue

Xerox Disclosure Journal

Abstract

This invention relates to a method of bopding a fluoropolymer sleeve to a roll. Such a sleeved roll may have various applications, such as the fuser or pressure roll in an electrostatographic copying machine. The method comprises first applying a layer of a lower melting fluoropolymer to the core, and then placing the sleeve (made of the higher melting fluoropolymer) over the coated core and heating the sleeve to shrink it to the roll. Then, melt and fuse the lower melting fluoropolymer to bond it to the core and to the higher melting fluoropolymer. In a specific example, ethylene-tetrafluoroethylene (ETFE) was applied to a metallic cors in the form of a powder 2 mils thick and baked at about melt temperature of 270 C. A sleeve of a perfluoroalkoxy (PFA) polymer 10 mils thick was slipped over the ETFE layer and the sleeve was heated to shrink it to the roll. Finally, the laminated roll was heated to a temperature between 27OoC and 31OoC, the melting point of PFA, to melt and fuse the ETFE to bond it to the metal core and the PFA sleeve.

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XEROX DISCLOSURE JOURNAL

BONDING PROCESS FOR FLUORO- POLYMER SLEEVES
Robert Edwards
Richard G. LaBombard Albert Schreiber
Edward G. Williams

Proposed Classification
U.S. C1. 219/216 Int. C1. H05b 1/00

This invention relates to a method of bopding a fluoropolymer sleeve to a roll. Such a sleeved roll may have various applications, such as the fuser or pressure roll in an electrostatographic copying machine. The method comprises first applying a layer of a lower melting fluoropolymer to the core, and then placing the sleeve (made of the higher melting fluoropolymer) over the coated core and heating the sleeve to shrink it to the roll. Then, melt and fuse the lower melting fluoropolymer to bond it to the core and to the higher melting fluoropolymer. In a specific example, ethylene-tetrafluoroethylene (ETFE) was applied to a metallic cors in the form of a powder 2 mils thick and baked at about melt temperature of 270 C. A sleeve of a perfluoroalkoxy (PFA) polymer 10 mils thick was slipped over the ETFE layer and the sleeve was heated to shrink it to the roll. Finally, the laminated roll was heated to a temperature between 27OoC and 31OoC, the melting point of PFA, to melt and fuse the ETFE to bond it to the metal core and the PFA sleeve.

Volume 5 Number 5 September/October 1980 487

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September/October 5 Number 5 Volume XEROX 488 DISCLOSURE JOURNAL 1980

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