Stiffening of extrudates with RF energy
US5223188A · kind A · utility
12Cited by
9References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 8, 1992 |
| Grant date | Jun 29, 1993 |
| Priority date | — |
| Expiry date | May 8, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2035/0861
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of stiffening plastically deformable material, newly forming or formed into a shaped body, is disclosed. The method includes; exposing the material, which includes body-forming matter, polar molecules, and a polymeric agent having a thermal gel point, to electromagnetic radiation within the frequency range 10.sup.7 to 10.sup.13 Hertz. The radiation is applied while plastically deformable material is contained in, or as it emerges from a forming member in the shape of a body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.