Composite membrane and method for forming the same

Details Composite membrane and method for forming the same Composite membrane and method for forming the same

2006-05-18

2008-08-26

Jolley, Kirsten C (Department: 1792)

Coating processes

Foraminous product produced

Microporous coating

C427S243000, C427S374100, C427S374500

Reexamination Certificate

active

07416761

ABSTRACT:
The present invention discloses discloses a composite PTFE membrane comprising an expanded PTFE membrane as substrate and a sintered porous PTFE membrane on top of it. The porous PTFE membrane on top has porous structure with interconnected channels formed with a sintering process that fuses the PTFE fine powders coated on the ePTFE membrane. Furthermore, the present invention discloses a method for forming the composite PTFE membrane.

REFERENCES:
patent: 4247259 (1981-01-01), Saboe et al.
patent: 4332035 (1982-06-01), Mano
patent: 5552100 (1996-09-01), Shannon et al.
patent: 5677366 (1997-10-01), Wu
patent: 6143675 (2000-11-01), McCollam et al.

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