Spin pack for spinning synthetic polymeric fibers
US5533883A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 18, 1993 |
| Grant date | Jul 9, 1996 |
| Priority date | — |
| Expiry date | Oct 18, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49995
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A spin pack for spinning synthetic fibers from two or more liquid polymer streams includes a supply for at least two discrete polymer streams without mixing with another discrete stream to the spin pack; a spinneret having extrusion orifices; and flow distribution plate sets. The flow distribution plate sets include at least one patterned plate having edges which define a substantially regular two-dimensional geometric shape, a substantially planar upstream surface, a substantially planar downstream surface and at least one flow distribution pattern stenciled therein by cutting through. For each patterned plate, at least one boundary plate stacked sealingly adjacent thereto and having edges which define a substantially regular geometric shape, a substantially planar upstream surface and a substantially planar downstream surface. The boundary plate has cut-through holes connecting the upstream surface with the downstream surface to form at least one flow-through channel to allow fluid flow through the patterned plate but otherwise is substantially solid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.