Fabric coating by extrusion die-calendering apparatus and method
US3956056A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 1974 |
| Grant date | May 11, 1976 |
| Priority date | — |
| Expiry date | Sep 27, 1994 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C48/05
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Method and apparatus for coating a fabric with elastomeric stock, wherein improved impregnation of the interstices of the fabric is achieved, the method comprising concomitantly feeding both elastomeric stock and a fabric in pressurized contact with one another between mutually confronting stationary and movable surfaces. The mutually confronting surfaces converge toward one another and cooperatively define a pressure chamber terminating in a restriction orifice. The movable surface is driven in a direction of feed of both the stock and fabric to frictionally carry and wedge both into and through the pressure chamber, thereby causing the interstices of the fabric to be increasingly impregnated by the stock.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.