Polyterafluoroethylene laminated article
AssigneeDaikin Industries, Ltd.
InventorsKazuo Ishiwari, Tatsuro Uchida, Masahiko Yamada
Life of this patent
Estimating the term…
Abstract
To provide a PTFE laminated article having a sufficient adhesive strength and a PTFE backing sheet having a low permeability, in which a specific weight of a PTFE sheet can be maintained high. A specific weight of the PTFE sheet is maintained at 2.175 or more by carrying out thermo-fusing of the PTFE sheet and a film or sheet of heat-meltable resin such as PFA after interposing a layer of PTFE fine particles between them or by carrying out treatment for preventing a rapid temperature lowering after the thermo-fusing without interposing the layer of PTFE fine particles.
Claims13
1-13. (canceled)
A method of producing a polytetrafluoroethylene laminated article, wherein after a polytetrafluoroethylene sheet and heat-meltable resin film or sheet are directly subjected to thermo-fusing, a rapid temperature lowering is prevented to sufficiently crystallize molten polytetrafluoroethylene.
15-30. (canceled)
(canceled)
Dependencies are inferred from the claim text.