Plastic article or earthenware shaping or treating: apparatus – Female mold and means to shape parison directly by internal... – Forming baffle – bottleneck – or handle
Patent
1978-07-10
1980-11-11
Silbaugh, Jan H.
Plastic article or earthenware shaping or treating: apparatus
Female mold and means to shape parison directly by internal...
Forming baffle, bottleneck, or handle
215 1C, 264520, 264521, 425446, 425526, B29C 1707, B29C 2500
Patent
active
042330220
ABSTRACT:
A method and apparatus are disclosed for developing a strain crystallized morphology in blowbottles of thermoplastic material by a heat treatment process subsequent to a blow molding operation. In a first embodiment, the blow mold itself includes means for differentially heating the blown article along its length so that only those portions which have been significantly molecularly oriented are heat treated. In a second embodiment, separate mold-shaped members are mounted adjacent the blow mold to receive the blown articles to apply the desired heat treatment process. In the method, an essentially amorphous thermoplastic parison is expanded in a blow molding operation at a temperature conducive to molecular orientation and strain induced crystallization. Then, the highly molecularly oriented bottle portions are heat treated to develop crystalline growth, while other non-molecularly oriented bottle portions may be simultaneously cooled.
REFERENCES:
patent: 3191225 (1965-06-01), E. F. Polka
patent: 3781395 (1973-12-01), A. R. Uhlig
patent: 3970419 (1976-07-01), E. I. Valyi
patent: 4039641 (1977-08-01), T. R. S. Collins
patent: 4102626 (1978-07-01), H. Scharrenbroich
Brady Thomas E.
Go Santos W.
Click M. E.
Lynch Charles S.
Owens--Illinois, Inc.
Silbaugh Jan H.
Wilson D. H.
LandOfFree
Apparatus for forming heat treated blown thermoplastic articles does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for forming heat treated blown thermoplastic articles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for forming heat treated blown thermoplastic articles will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1688985