B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/509
B29C 49/00 (2006.01) B29C 49/42 (2006.01) B29C 49/48 (2006.01) B29C 49/04 (2006.01)
Patent
CA 1273762
ABSTRACT OF THE DISCLOSURE When blow molding elongated serpentine tubes or similar articles, loading of the mold cavity with the parison can present a problem. The parison can stick against the wall of the mold cavity. Moreover, a large diameter parison must be used, i.e. the parison must have a diameter equal to the total width dimension of the article, and consequently a large volume of flash is produced. The flash must be trimmed and recycled. In order to avoid these problems, inserts are placed in the mold to define portions of the mold cavity, particularly at corners. Air under pressure is fed into passages in the outer surfaces of the inserts and discharged through small orifices in such inserts against the parison to guide and drive the latter fully into the mold cavity. A vacuum can also be applied to the end of the cavity remote from the parison entry point for drawing the parison into the mold.
540088
Abc Group
Seaby & Associates
LandOfFree
Blow molding method and apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Blow molding method and apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Blow molding method and apparatus will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1197930