Mold assembly for blow molding plastic articles and method...

Plastic and nonmetallic article shaping or treating: processes – Direct application of fluid pressure differential to... – Including application of internal fluid pressure to hollow...

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C425S532000, C425S541000

Reexamination Certificate

active

06841118

ABSTRACT:
A mold assembly for blow molding plastic articles is provided having an upper mold member, a lower mold member and a lower support member. The lower mold member is preferably a relatively lightweight plate having a generally centrally located molding cavity matingly matched with an upper molding cavity in the upper mold member. The lower mold member is moved horizontally and optionally vertically beneath an extrusion head as a molten parison is extruded. The lower mold member is then transported to, and positioned within, the lower support member. The upper mold member is then closed over the lower mold member and lower support to close the mold assembly. The molten parison is then expanded in the mold cavity. After the molding operation, the plastic part may be removed and the lower mold member may be cooled by immersion in a cooling fluid. The apparatus to move the lower mold member during extrusion of the parison and to the molding station may be a robotic arm. The lower mold member is relatively lightweight so that it may be efficiently moved by the robot arm while the necessary structural support is provided by the lower support member.

REFERENCES:
patent: 3809521 (1974-05-01), LaFosse
patent: 4239474 (1980-12-01), Nakagawa
patent: 4362688 (1982-12-01), Nakagawa
patent: 5030083 (1991-07-01), Kohno et al.
patent: 5264178 (1993-11-01), Yamamura et al.
patent: 5601779 (1997-02-01), Ishikawa et al.
patent: 5814269 (1998-09-01), Geiger
patent: 6168750 (2001-01-01), Van Schaftingen et al.
patent: 6416313 (2002-07-01), Dohmen et al.
patent: 03042228 (1991-02-01), None

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Mold assembly for blow molding plastic articles and method... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Mold assembly for blow molding plastic articles and method..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mold assembly for blow molding plastic articles and method... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3425614

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.