Thermally formed filter

Details Thermally formed filter Thermally formed filter

1986-12-10

1988-09-20

Sever, Frank

Plastic and nonmetallic article shaping or treating: processes

Forming articles by uniting randomly associated particles

With reshaping or surface embossing of formed article

264121, 264DIG48, B29C 5900

Patent

active

047724439

ABSTRACT:
A fluid filter is formed by manufacturing an air laid batt containing randomly disposed structural fibers and a thermoplastic binder fiber. The interstices between the fibers are fixed by applying a latex resin to the batt, thereby fixing the pore sizes of the filtering media before the filtering media is molded. The filtering media is then molded into shape by using a plunger to tuck the media into an open cavity mold. The mold may be heated and pressure may be applied to the batt to mold the batt.

REFERENCES:
patent: 3947207 (1976-03-01), Magidson et al.
patent: 4337116 (1982-06-01), Foster et al.
patent: 4647326 (1987-03-01), Pott

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