Optimisation of preform preparation in injection-stretch-blow-moulding
US8075831B2 · kind B2 · utility
0Cited by
4References
7Claims
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Assignee
Inventors
Key dates
| Filing date | Sep 15, 2006 |
| Grant date | Dec 13, 2011 |
| Priority date | — |
| Expiry date | Feb 6, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1397
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.