Method of a single element complete air filtering structure for

Details Method of a single element complete air filtering structure for Method of a single element complete air filtering structure for

1981-01-30

1983-05-17

Anderson, Philip E.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By treating occluded solids

55524, 264 54, B29D 2700, B01D 3914, B01D 5314, B01J 2004

Patent

active

043839568

ABSTRACT:
A respirator filter formed of a cast polymeric matrix having a controlled porosity and inclusion of toxic gas absorbing and/or neutralizing chemicals. The chemicals are introduced into the casting precursor or added after polymerization, e.g. by imbibition with a solvent carrier and deposition by solvent evaporation.

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