Method of providing durable, slick sliding surfaces on extrusion forming apparatus, and the product thereof
US3942937A · kind A · utility
9Cited by
11References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 16, 1974 |
| Grant date | Mar 9, 1976 |
| Priority date | — |
| Expiry date | May 16, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/46
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The provision of a durable, slick sliding surface on metal faces of plastic forming extrusion apparatus such as extruder nozzles and dies. The durable, slick sliding metal surface is provided by burnishing and heat treating a polysiloxane fluid on the face of the metal. The burnishing comprises vigorous rubbing of the polysiloxane fluid treated metal face with a material relatively softer than the metal face being treated, effectively over the entire surface treated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.