Thermoplastic elastomeric film extrusion process
US4178337A · kind A · utility
22Cited by
4References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 18, 1977 |
| Grant date | Dec 11, 1979 |
| Priority date | — |
| Expiry date | Oct 18, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C48/83
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A single screw extrusion process for extruding a mixture of relatively high molecular weight thermoplastic elastomer particles and relatively low molecular weight resin particles, wherein the particulate mixture is supercooled and maintained at temperatures below that which would cause the mixture to agglomerate and stick to the screw until the axial driving forces on the mixture have increased to the extent they will overcome any tendency of the mixture to stick to the screw, thereby assuring steady state extrusion conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.