Low melt flow index resins for injections-stretch-blow-moulding
US8894911B2 · kind B2 · utility
1Cited by
7References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2007 |
| Grant date | Nov 25, 2014 |
| Priority date | — |
| Expiry date | Jul 31, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1397
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention discloses a method for preparing vials, preferably medical vials by two-stage injection-stretch-blow-molding with a random copolymer of propylene having a melt index MI2 of from 1 to 3 dg/min and an ethylene content of from 2 to 3.5 wt % based on the weight of the resin, and wherein the preform injection temperature is of at least 280° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.