Method for manufacturing filter element

Details Method for manufacturing filter element Method for manufacturing filter element

1997-11-13

2000-01-11

Aftergut, Karen

Plastic and nonmetallic article shaping or treating: processes

Removal of liquid component or carrier through porous mold...

By direct application of vacuum or pneumatic pressure

162219, 162224, 162227, 162228, 162387, 162404, 162416, 264279, B29C 3904, D21J 300, D21J 700

Patent

active

060132140

ABSTRACT:
In a filter manufacturing method, during a time period from the start of the suction of the slurry to a point in time when fibers in the slurry accumulate on the outer peripheral surface of the protector to a prescribed thickness, the protector and its leg portions are held spaced away from each other. The leg portions are moved toward the protector so that the leg portions are disposed at a position spaced by a uniform distance from the outer peripheral surface of the protector and the suction operation is continued. Thus, the slurry containing the fibers therein can be easily caused to flow deeply into recess portions of a fin-like portion with no fiber being caught between the protector and the leg portions, thus reducing non-walled portions.

REFERENCES:
patent: 3719553 (1973-03-01), Dorril et al.
patent: 4349326 (1982-09-01), Foster et al.
patent: 4753713 (1988-06-01), Gunderson
patent: 4853087 (1989-08-01), Schlor et al.
patent: 4971746 (1990-11-01), Ferrer
patent: 5755963 (1998-05-01), Sugiura et al.

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