Process for producing a ski coating strip made of ultra high molecular-weight polyethylene
US5468543A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 19, 1993 |
| Grant date | Nov 21, 1995 |
| Priority date | — |
| Expiry date | May 19, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31801
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention concerns a process for manufacturing a strip of ski-coating material made of polyethylene of ultra high molecular weight, wherein a ski-coating strip material 4 manufactured to a thickness of 0.5 to 1.5 mm by a screw extruder, a ram extruder or press sintering with subsequent peeling is made to pass continuously first through a heating zone 1 in which it is heated to temperature above 140.degree. C. and then through a cooling zone consisting of two sizing plates 2, 2' in which it is cooled to a temperature equal to or lower than ambient. This process produces a ski coating of which the crystalline proportion can be adjusted within a range of 25 and 60%, as a result of which improved gliding by the ski coating on snow and improved wax acceptance is assured in comparison with the known methods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.