Uniform minimization of plastic foam cell size
US4579872A · kind A · utility
15Cited by
2References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 6, 1985 |
| Grant date | Apr 1, 1986 |
| Priority date | — |
| Expiry date | May 6, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S521/91
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Expandable beads and the like of thermoplastic organic polymer material, advantageously lightly-crosslinked in preparation, which are imbibed with halocarbon and/or light hydrocarbon (including mixed) blowing agents are advantageously tempered to provide excellent quality, uniformly fine-celled expanded cellular products therefrom by a quick quench from imbibition temperature to below 10 or so .degree. C. within one minute.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.