Method of molding heat-resistant vessel having thick portion on

Details Method of molding heat-resistant vessel having thick portion on Method of molding heat-resistant vessel having thick portion on

1991-10-22

1993-01-12

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Including application of internal fluid pressure to hollow...

264342R, 264521, 264532, B29C 4906, B29C 4912, B29C 4918

Patent

active

051788160

ABSTRACT:
A method of manufacturing a heat resistant plastic vessel including: injection molding a preform; primary stretch blow molding the preform to obtain a primary blow-mold object; heat-shrinking the primary blow-mold object; and secondary stretch blow molding the heat-shrunk object to obtain a secondary blow-mold object as a heat-resistant plastic vessel. In the primary stretch blow molding process, a concavity is formed on a body of the primary blow-mold object. The concavity has a thickness larger than the other body portion. In the heat-shrunk object, the large thickness portion has a lower heat retaining capacity than the other body portion. The heat-shrunk object then undergoes the secondary stretch blow molding process, thereby obtaining the secondary blow-mold object, which has a large thickness portion corresponding to the concavity of the primary blow-mold object to assure high mechanical strength such as buckling strength of the final product.

REFERENCES:
patent: 3956441 (1976-05-01), Uhlig
patent: 3989784 (1976-11-01), Uhlig
patent: 4550007 (1985-10-01), Ohtsu et al.
patent: 4836971 (1989-06-01), Denis et al.

Affiliated with

Also associated with

Rating

Method of molding heat-resistant vessel having thick portion on does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of molding heat-resistant vessel having thick portion on , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of molding heat-resistant vessel having thick portion on will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1217915