Method of making a liquid filter

Details Method of making a liquid filter Method of making a liquid filter

1973-11-07

1977-12-27

Simmons, David A.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

55498, 156215, 156294, 210487, B65H 8100

Patent

active

040653412

ABSTRACT:
A method of making a liquid filter includes the steps of providing a spiral roll of filtering material on a central tubular member, providing a housing member into which the roll is to be placed and laying a bead of thermoplastic material having a given softening point on an outer surface of the roll at least around the circumference of the roll close to an end thereof. The bead is pressed with cooled forming jaws, while in a warm state, to suitable dimensions corresponding to inside dimensions of the housing member. The housing member is heated to a temperature above the softening point of the thermoplastic material, the roll is inserted into the housing member and thereafter, the housing member is cooled. The thermoplastic material cools, acts as a glue and constitutes a tight, rigid connection between the housing member and the roll of filtering material.

REFERENCES:
patent: 3025963 (1962-03-01), Bauer
patent: 3042571 (1962-07-01), Jackson
patent: 3189179 (1965-06-01), McMichael
patent: 3392843 (1968-07-01), Mumby
patent: 3520417 (1970-07-01), Durr et al.
patent: 3563828 (1971-02-01), Marshall
patent: 3692184 (1972-09-01), Miller et al.
patent: 3722696 (1973-03-01), Dwyer et al.
patent: 3738813 (1973-06-01), Esmond
patent: 3739916 (1973-06-01), Cub et al.
patent: 3799354 (1974-03-01), Buckman et al.

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