Method for manufacturing polishing cloths
US4708891A · kind A · utility
8Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 24, 1986 |
| Grant date | Nov 24, 1987 |
| Priority date | — |
| Expiry date | Feb 24, 2006 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06N2205/10
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A method for manufacturing polishing cloths of the class to be used with abrasive powders on a lapping machine is disclosed. The method comprises the steps of impregnating a nonwoven fabric sheet with a solution of polyurethane elastomer, wet-coagulating the impregnated sheet, and heating the resulting microporous composite sheet at a temperature higher than the softening point of the polyurethane elastomer under an essentially uncompressed condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.