EP 0022421 B1 19821215 - METHOD AND APPARATUS FOR PRODUCING A YARN HAVING ALONG ITS LENGTH ALTERNATING OPPOSITE TWIST ZONES
Title (en)
METHOD AND APPARATUS FOR PRODUCING A YARN HAVING ALONG ITS LENGTH ALTERNATING OPPOSITE TWIST ZONES
Publication
Application
Priority
FR 7918173 A 19790709
Abstract (en)
[origin: US4351146A] A process for producing a yarn with alternate twist, which is obtained by intermittently varying the distance which the twist extends back upstream of a false twister. The variation in the distance is produced without braking the yarn and is achieved by means of a blocking device acting intermittently at a point located close to the false twister. The duration of action of the blocking device approximately corresponds to the time taken by a given point on the yarn to cover the distance from a delivery member to the false twister.
IPC 1-7
IPC 8 full level
D02G 3/26 (2006.01); D01H 1/00 (2006.01); D01H 1/11 (2006.01); D01H 5/22 (2006.01); D01H 13/08 (2006.01); D02G 3/28 (2006.01)
CPC (source: EP US)
D01H 1/11 (2013.01 - EP US); D01H 5/22 (2013.01 - EP US); D01H 13/08 (2013.01 - EP US); D02G 3/286 (2013.01 - EP US); D02G 3/367 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE GB IT LI
DOCDB simple family (publication)
EP 0022421 A1 19810114; EP 0022421 B1 19821215; AU 531289 B2 19830818; AU 6019180 A 19810115; DE 3061344 D1 19830120; FR 2461040 A1 19810130; FR 2461040 B1 19820122; JP S5658015 A 19810520; JP S638210 B2 19880222; US 4351146 A 19820928
DOCDB simple family (application)
EP 80420086 A 19800707; AU 6019180 A 19800708; DE 3061344 T 19800707; FR 7918173 A 19790709; JP 9320480 A 19800708; US 16633180 A 19800707