Rigid sheet polytetrafluoroethylene material

Details Rigid sheet polytetrafluoroethylene material Rigid sheet polytetrafluoroethylene material

B - Operations, Transporting

32

B

B32B 27/28 (2006.01) B32B 5/18 (2006.01) B32B 5/32 (2006.01) B32B 27/20 (2006.01) C09K 3/10 (2006.01) F16J 15/06 (2006.01) F16J 15/10 (2006.01)

Patent

CA 2174451

An improved sealing material for use as a gasket and in similar applications is disclosed. The material is constructed from a composite of comformable expanded polytetrafluoroethylene (PTFE) and embedded densified expanded PTFE material. The composite is bonded together to form a sheet material that is sufficiently conformable to provide good seal between surfaces and is sufficiently rigid to make the material easy to handle and install. The material of the present invention is particularly suitable for use as a gasket where rigidity is needed, customization or modification of gasket shape is desirable, and/or where a wide, even sealing surface is sought.

Matériau d'étanchéité amélioré destiné à être employé comme joint d'étanchéité et dans des applications similaires. Le matériau est réalisé à partir d'un composite formé de polytétrafluoroéthylène expansé conformable (PTFE) et d'une matière noyée de PTFE expansé densifié. Le composite est soudé pour former un matériau en feuille qui soit suffisamment conformable pour assurer une bonne étanchéité entre des surfaces et suffisamment rigide pour qu'il soit facile à manipuler et à installer. Le matériau de cette invention est particulièrement adapté pour être employé comme joint d'étanchéité lorsqu'on a besoin d'un joint d'étanchéité rigide, adaptable ou modifiable du point de vue de la forme, et/ou lorsqu'on cherche à obtenir une surface d'étanchéité plane.

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