Post formation profile processing

Details Post formation profile processing Post formation profile processing

2005-01-04

2005-01-04

McDowell, Suzanne E. (Department: 1732)

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Corrugating

C264S511000, C264S516000, C264S523000, C264S537000, C264S540000, C264S542000, C264S266000, C264S294000, C264S296000

Reexamination Certificate

active

06838041

ABSTRACT:
This invention relates to the post-formation processing of extruded or injection molded profiles in an economic manner without the need to purchase a blow molding machine, yet still effect post-formation radial expansion or contraction by the application of sufficient degree of heat or the performing of the operation sufficiently quickly to permit the utilization of the retained latent heat from the extrusion or injection molding process.

REFERENCES:
patent: 3751541 (1973-08-01), Hegler
patent: 4446084 (1984-05-01), Rowley
patent: 5527503 (1996-06-01), Rowley
patent: 5756038 (1998-05-01), Iseli et al.
patent: 5895695 (1999-04-01), Rowley
patent: 6082780 (2000-07-01), Rowley et al.
patent: 6129885 (2000-10-01), Klein
patent: WO 9525626 (1995-09-01), None
patent: WO 9634733 (1996-11-01), None
patent: WO 9733739 (1997-09-01), None

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