Method of manufacturing a filter cartridge

Details Method of manufacturing a filter cartridge Method of manufacturing a filter cartridge

2004-10-22

2010-06-08

Heitbrink, Jill L (Department: 1791)

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

C264S336000

Reexamination Certificate

active

07731886

ABSTRACT:
An injection moulding assembly includes a male moulding member surrounded by a female moulding member forming a void between them that upon injection of molten plastics into the mould a container can be formed. The moulding assembly includes a guide rod and ejection flange and a pair of ejection flange guide rods, an air vent valve and an injection passage. The male member includes in this embodiment eight grooves unevenly spaced so that the partially hardened container formed in the injection mould can be pushed from the mould using the ejection flange while the container is sufficiently green to enable the ribs formed in the grooves to move over the surface of the male mould during the ejection process.

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