Injection moulding of functional cavities

Details Injection moulding of functional cavities Injection moulding of functional cavities

2004-12-09

2008-11-25

McDowell, Suzanne E. (Department: 1791)

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Producing multilayer work or article

C264S572000, C264S573000

Reexamination Certificate

active

07455806

ABSTRACT:
A mould assembly (60) and a method of use in injection moulding of a part having a functional cavity therein. The mould assembly has a recess (72) to receive a hollow tubular insert (48) intended to be placed in the mould assembly before the injection of a mouldable material into the cavity and to remain in the part after moulding. A gas supply arrangement supplies pressurised gas to the hollow tubular insert at a selected stage during the injection process whereby to form the functional cavity in the part.

REFERENCES:
patent: 5788917 (1998-08-01), Herlache
patent: 6630086 (2003-10-01), Goral et al.
patent: 7029468 (2006-04-01), Honebrink

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