Apparatus and process for the production of pile surface articles
US4436687A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 8, 1975 |
| Grant date | Mar 13, 1984 |
| Priority date | — |
| Expiry date | Sep 8, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/236
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process for making a pile-surfaced product comprises feeding a thermoplastic film and a backing between rollers, the roller which engages the thermoplastic being heated so as to cause the thermoplastic to adhere thereto, and subsequently separating the backing and the thermoplastic from the heated roller so that the thermoplastic is drawn into filaments. The nature of the pile is controlled by hauling off the backing and the thermoplastic over a rod or bar which fixes the point at which the thermoplastic separates from the heated roll, controls the path of the product as it moves away from the heated roll and guides a cooling fluid onto the back of the backing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.