Polytetrafluoroethylene laminated article
US6994908B1 · kind B1 · utility
4Cited by
7References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 22, 1999 |
| Grant date | Feb 7, 2006 |
| Priority date | — |
| Expiry date | Jul 22, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/3878
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.