Method for manufacturing a rubber article
US5628956A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 1995 |
| Grant date | May 13, 1997 |
| Priority date | — |
| Expiry date | Feb 24, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2021/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method of manufacturing a rubber article includes the steps of shaping a green article and blowing a solvent-free powdery release agent made of powder particles onto the green article in order to coat the green article with the release agent. The release agent contains at least 10% vulcanized rubber powder and a compound preventing rubber adhesion within the release agent. During blowing an electrostatic potential difference is provided between the green article and the release agent for driving the powder particles of the release onto the green article. The green article coated with the release agent is subsequently placed into a vulcanization mold where the green article is vulcanized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.