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US 5,965,091 AGranted
Filled paper for gas filtration
AssigneesElf Antar France, A. Ahlstrom Corporation
InventorsFrancois-Pierre Navarre, Bernard Bossand, Pierre Girard, Joseph Dussaud
Life of this patent
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Abstract
The present invention relates to a filled paper for gas filtration, with a high adsorption and absorption capacity. This paper, consisting of cellulose fibers, is filled with organic and/or inorganic powders adapted in quantity and in quality to the gas to be treated. It finds its application in the petroleum, chemical, agri-foodstuffs and papermaking industries, in apartment buildings and in office and hospital buildings.
Claims16
A filled paper for gas filtration, comprising:
- a paper formed of cellulose fibers impregnated with at least one pulverulent organic material, 95% of the particles of the pulverulent material having a particle size ranging from 1-150 .mu.m, in an amount of 5-75% by weight based on the combined weight of cellulose fibers and pulverulent material, said pulverulent material comprising at least one particulate material selected from the group consisting of micronized roasted wood particles having a particle size ranging from 50-150 .mu.m and a coniferous wood powder.
Dependencies are inferred from the claim text.