Apparatus for spiral-boss heterofil spinneret
AssigneeArteva North America S.A.R.L.
InventorsJames Richard Goodall, John Stanley McConnell, Allan James Hastie
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Abstract
An apparatus to increase the orifice density in a spinneret by using an elongate boss having a plurality of orifices. The apparatus is for spinning bicomponent sheath/core filaments. The apparatus includes a distributor plate, and spinneret and a shim position between the distributor plate and the spinneret. The spinneret includes a plurality of elongate bosses spaced apart by channels. Each boss having a plurality of orifices of which the distance between the orifices are restricted only by manufacturing tolerances.
Claims12
A spinneret assembly for the production of sheath-core bicomponent filaments comprising:
- a distributor having a plurality of core polymer flow passages and a sheath polymer flow passage;
- a spinneret secured relative to said distributor;
- a boss integral with said spinneret, said boss having a plurality of openings which extend through said boss and said spinneret, said openings coaxially aligned with a respective outlet of said polymer flow passages;
- and
- a recessed pathway adjacent to said boss.
Dependencies are inferred from the claim text.