The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 23, 1993
Filed:
Apr. 14, 1992
Gunter Goossens, Trin, CH;
EMS-Inventa AG, Tokyo, JP;
Abstract
A pack for spinning core/sheath fibers from a plurality of fiber-forming materials including a distributor, a spinneret plate, and a separating plate therebetween. The distributor has a first conduit adapted to convey one of the first materials in a stream in a downstream direction, and a second conduit adapted to convey another material in a second stream in the same direction. The separating plate includes a core cavity, an annulus surrounding it, a sheath channel fluidly connecting the first conduit and the annulus, and a core channel fluidly connecting the second conduit and the cavity. The spinneret plate includes an exit channel with a die capillary at its downstream end fluidly connected to the annulus and the core cavity at its upstream end. The exit channel has an entry with diameter at least equal to the annular diameter, the entry being located at or adjacent the upstream end. As a result, the first stream surounds the second stream and both are extruded through the die capillary to form the fiber.