Plastic and nonmetallic article shaping or treating: processes – Direct application of fluid pressure differential to... – Starting material is nonhollow planar finite length preform...
Patent
1978-03-27
1979-10-30
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
Direct application of fluid pressure differential to...
Starting material is nonhollow planar finite length preform...
B29C 1704
Patent
active
041728750
ABSTRACT:
The method of forming thin-walled cupped articles from unpigmented polypropylene sheet by plug-assisted fluid pressure forming of the sheet at a temperature 4.degree. to 15.degree. C. below its melting point is known to produce clear, oriented articles of good impact strength. The low temperature impact strength of these articles can be significantly improved with little or no sacrifice of clarity by making them from sheet produced from a blend of a crystalline propylene polymer with from 1 to 30% of low density polyethylene.
REFERENCES:
patent: 3281501 (1966-10-01), Coats et al.
patent: 3358053 (1967-12-01), Hostetler
patent: 3627852 (1971-12-01), Aishima et al.
Beijen Johan M.
Du Chatinier Jacques G.
Shell Oil Company
Silbaugh Jan H.
LandOfFree
Production of thinwalled 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 Production of thinwalled articles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Production of thinwalled articles will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-20168