Screens and method of making the same
US4743496A · kind A · utility
1Cited by
1References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1985 |
| Grant date | May 10, 1988 |
| Priority date | — |
| Expiry date | Dec 30, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/179
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A fabric of a polymer material useful for filtration and other purposes can be treated with a mixture of a solvent for the polymer material in a liquid which is not a solvent for the polymer material and which is more volatile than the solvent for a time and at a temperature sufficient to dissolve some polymer material in the strands. As this occurs the surface tension of the dissolved polymer will cause the dissolved polymer to move to create a continuous, smooth walled, curved surface connecting adjacent strands and extending between such strands.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.