Gas filter

Details Gas filter Gas filter

1986-01-17

1987-05-26

Prunner, Kathleen J.

Gas separation

With remote fan or pump and unconfined flow to separator

55385C, 55486, 55524, 55528, 55DIG42, 604333, B01D 5000

Patent

active

046682589

ABSTRACT:
A gas filter suitable for an ostomy bag comprises a pad impregnated with a deodorizing agent (e.g., activated carbon) and made of any open cell plastic foam material which is laminated together with a first microporous membrane. A layer of water repellent material is applied on the surface of the first microporous membrane other than the surface to which the foam pad is attached. The layer is sufficiently thin so that gas flow through the microporous membrane is not blocked.

REFERENCES:
patent: 3171820 (1965-03-01), Volz
patent: 3865758 (1975-02-01), Yoshida et al.
patent: 4046939 (1977-09-01), Hart
patent: 4268286 (1981-05-01), Steer et al.
patent: 4274848 (1981-06-01), La Gro
patent: 4460392 (1984-07-01), Poulsen et al.
patent: 4479818 (1984-10-01), Briggs et al.
patent: 4490145 (1984-12-01), Campbell

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