Pleated filter pack and method of making same

Details Pleated filter pack and method of making same Pleated filter pack and method of making same

1981-01-26

1982-10-12

Nozick, Bernard

Gas separation

Zigzag, corrugated, or conical

156226, 156227, 428286, B01D 4610

Patent

active

043537235

ABSTRACT:
A filter pack for the purification of air and gases comprises an undulating sheet of elastic fleece, e.g. one made from polyester fibers, sandwiched between two sets of similarly folded parallel retaining strips interspersed with the undulations of the sheet so that each strip forms a plurality of integrally interconnected U-shaped pleats with the legs of adjacent pleats closely juxtaposed. The strips, or at least outer surface layers thereof, consist of heat-fusible material enabling the closely juxtaposed legs of their pleats to be thermally bonded together after pleating. The strips may also be made from fleece so that bonding takes place only at contact points between their fibers, allowing the filtered fluid to pass both between and through the strips. Similar bonding may take place between the strips and the sheet.

REFERENCES:
patent: 3621640 (1971-11-01), Ohno et al.
patent: 3631582 (1972-01-01), Lucas et al.
patent: 3692184 (1972-09-01), Miller et al.
patent: 3871851 (1975-03-01), Neumann
patent: 4135900 (1979-01-01), Westlin et al.
patent: 4147524 (1979-04-01), Smith et al.
patent: 4187091 (1980-02-01), Durre et al.

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