Polytetrafluoroethylene laminated article
US7244503B2 · kind B2 · utility
0Cited by
7References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 13, 2005 |
| Grant date | Jul 17, 2007 |
| Priority date | — |
| Expiry date | Oct 13, 2025 |
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.