METHOD OF PRODUCTION OF FILTERING PAPER Russian patent published in 2003 - IPC

FIELD: petrochemical industry for aviation fuel fine cleaning, pulp and paper industry in production of filtering paper. SUBSTANCE: invention presents a method that may be used in the wood-pulp and paper industry for production of the filter paper and in the petrochemical industry for fine cleaning of the produced aviation fuel and other operational fluids. The paper mass bp prepared from a sulfate unbleached cellulose, comminuted up to the beating rate at the temperature of 22-35 C, and from the sulfate mercerized cellulose. Using this mass poured on sieve of the paper- making machine the paper is manufactured. Then this paper is permeated with a solution with 2-5 % concentration of a polyvinyl acetate dispersion and a water-repelling] agent. EFFECT: reduction of hydrodynamic resistance, achievement of the necessary mechanical strength, throughput and moisture resistance. 2 cl, 1 tbl, 3 ex