Method of manufacturing an inside-to-outside flow filter tube

Details Method of manufacturing an inside-to-outside flow filter tube Method of manufacturing an inside-to-outside flow filter tube

1977-06-03

1978-07-25

Fisher, Richard V.

Paper making and fiber liberation

Processes and products

Including solid non-waterlaid preform

162107, 162108, 162135, 162156, 162219, 162228, D21D 300, D21H 108

Patent

active

041027361

ABSTRACT:
A process of preparing an inside-to-outside flow filter tube, which process comprises dispersing a plurality of glass fibers in water to form a water slurry of the fibers, the glass fibers having a diameter range of from about 0.001 to 10 microns; forming a filter tube comprising a wet mat of the glass fibers from the water slurry on a cylidrical mandrel; during the forming of the wet mat of fibers into a filter tube, incorporating an open-scrim, reinforcing sheet material within the internal wall thickness of the wet mat of fibers forming the filter tube, the sheet material extending generally the length of the filter tube and at least about 11/2 revolutions of the filter tube diameter; drying the filter tube containing the scrim sheet material within the filter tube wall; bonding the dried filter tube with a bonding agent at the junction of the glass fiber crossover points and with and through the scrim sheet material; and recovering an integral filter tube having a high burst strength.

REFERENCES:
patent: 2395301 (1946-02-01), Sloan
patent: 3026609 (1962-03-01), Bryan
patent: 3061107 (1962-10-01), Taylor
patent: 3063888 (1962-11-01), Howard
patent: 3767054 (1973-10-01), Farrow et al.
patent: 4006054 (1977-02-01), Head
patent: 4032457 (1977-06-01), Matchett
patent: 4052316 (1977-10-01), Berger, Jr. et al.

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