Patent · US Active

Method and apparatus for spinning and crimping a synthetic multifilament yarn

US8342834B2 · kind B2 · utility

3Cited by

2References

4Claims

0Family size

Assignee

Oerlikon Textile GmbH & Co. KG · DE

Inventors

Mathias Stündl · Wedel, DE
Diethard Hubner · Bordesholm, DE

Key dates

Filing date	Jul 14, 2005
Grant date	Jan 1, 2013
Priority date	—
Expiry date	Aug 10, 2030

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD02J13/005
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A method and an apparatus for spinning and crimping a synthetic multifilament yarn, wherein a filament bundle is spun from a polymer melt and compressed to a yarn plug. The yarn plug is advanced at a cooling speed and cooled within a cooling zone in a moving cooling groove. After cooling, the yarn plug is disentangled to form a crimped yarn, with the latter being wound to a package. To obtain an adequate cooling of the yarn plug and, with that, a stable and highest possible crimp in the yarn, the method of the invention provides for selecting the length of the cooling zone and the cooling speed of the yarn plug such that the yarn plug is cooled in the cooling groove over a period of at least 1 second. To this end, the apparatus of the invention includes a cooling groove, whose width is dimensioned such that the yarn plug can be advanced in meander form in a plurality of superposed layers.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.