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
2006-09-15
2011-12-13
Gupta, Yogendra N (Department: 1744)
Plastic and nonmetallic article shaping or treating: processes
Direct application of fluid pressure differential to...
Including application of internal fluid pressure to hollow...
C264S537000
Reexamination Certificate
active
08075831
ABSTRACT:
This invention discloses a method for preparing a preform for two-stage injection-stretch-blow-moulding (ISBM) from polypropylene resin produced with a Ziegler-Natta catalyst system and having a melt flow index MI2 of from 1 to 20 dg/min, wherein polypropylene is injected at a melt temperature of at least 265° C. Also disclosed are the preforms obtainable by the method, the use of the preforms for preparing bottles, and the bottles prepared from the preforms.
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Flick, E.W., “Industrial Synthetic Resins Handbook,” Second Edition, William Andrew Publishing/Noyes, 1991, pp. 729-772.
Duranel Laurent
Humbeeck Emmanuel
Gupta Yogendra N
Smith Jeremiah
Total Petrochemicals Research Feluy
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