Process for spinning thermoplastic fibers on a grid spinning system
US5614142A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 20, 1995 |
| Grant date | Mar 25, 1997 |
| Priority date | — |
| Expiry date | Nov 20, 2015 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01D1/065
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Fibers are made from thermoplastic polymers by supplying solid particles of the thermoplastic to a melting grid; heating the melting grid to a temperature sufficient to melt the thermoplastic; melting the thermoplastic particles on the heated melting grid such that the melted thermoplastic flows through the grid and is collected in a collecting chamber located beneath the melting grid; injecting into the collecting chamber below the melting grid an additive present in a non-aqueous carrier which carrier comprises organic rosin materials and a surfactant; without actuated mechanical stirring, forming a substantially homogeneous mixture from the injected additive; and extruding fibers from the substantially homogeneous mixture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.