Apparatus for manufacturing air filters for motor vehicles

Details Apparatus for manufacturing air filters for motor vehicles Apparatus for manufacturing air filters for motor vehicles

1994-10-28

1996-06-25

Nguyen, Khahn P.

Plastic article or earthenware shaping or treating: apparatus

Distinct means to feed, support or manipulate preform stock...

Opposed registering coacting female molds

425125, 425129100, 425DIG47, 264275, 264279, 264 46400, B29C 4514

Patent

active

055294766

ABSTRACT:
An apparatus for manufacturing filters for motor vehicles essentially consists of a die (1, 2) in which the filtering element (9) is introduced, around which a channel (25) is formed where a movable frame (10) is lowered having a shape substantially corresponding to that of the filtering element (9), so as to define an injection cavity (27) separated from the filtering element, and an expansion cavity (28) adjacent the filtering element (9) that are communicate one another by the lifting of the movable frame (10), whereby the resin can expand and stick to the filtering element (9). The die is provided with a seal groove (3) acting as a seal gasket and is filled with synthetic resin during the expansion thereof, which resin prevents any further resin from entering the space between the die (2) and the movable frame (10).

REFERENCES:
patent: 3613223 (1971-10-01), Bush
patent: 4347208 (1982-08-01), Southall
patent: 4746339 (1988-05-01), Millard
patent: 4824357 (1989-04-01), Christiansen
patent: 4851176 (1989-07-01), Christiansen et al.
patent: 5308559 (1994-05-01), Baracchi et al.

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