Apparatus and process for the production of pile surface articles
US4436503A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1978 |
| Grant date | Mar 13, 1984 |
| Priority date | — |
| Expiry date | Mar 31, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/236
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Apparatus for manufacturing sheet-like material having a thermoplastic pile surface includes a cylindrical roll having a heated surface, a feed arrangement for feeding a foundation layer and a thermoplastic material to the heated surface of the roll with the thermoplastic material located between and in contact with the surface and the foundation layer and a withdrawing arrangement for withdrawing the foundation layer and thermoplastic material from the heated surface in a manner such that the thermoplastic material is drawn into filaments which are attached to the foundation layer. In one embodiment the laminate is withdrawn from the roll over a tube or bar and a jet is provided for directing a jet of cooling fluid from the back of the foundation layer into the area where the filaments are formed. In another embodiment the laminate is withdrawn from the roll over a rod or bar which is inter-related with a front jet so that cooling fluid is deflected into the space between the bar and the roll.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.