Method and apparatus for microcellular polypropylene extrusion, and polypropylene articles produced thereby
US6231942A · kind A · utility
98Cited by
42References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 21, 1998 |
| Grant date | May 15, 2001 |
| Priority date | — |
| Expiry date | Jan 21, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249979
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A polymeric foam article is comprised mainly of homopolymeric polypropylene, or unimodal polypropylene. The polymeric article can be microcellular, and can be formed into a drinking straw.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.