EP 0188220 B1 19930811 - APPARATUS FOR MAKING A CORE YARN
Title (en)
APPARATUS FOR MAKING A CORE YARN
Publication
Application
Priority
CH 21385 A 19850117
Abstract (en)
[origin: US4658574A] The apparatus comprises a stretching unit (S) delivering two stretched fiber rovings (4, 5). One fiber roving (4) serves as the core for the wrapped yarn to be produced and runs to a twist-imparting device (6, 7). The fibers of the other fiber roving (5) are transferred to a moving fiber feeding and holding surface (9) constituted by a perforated peripheral surface of a hollow disk (10). This surface (9) comes into contact with the core (4) at a point (C) in front of the twist-imparting device (6, 7). At this contact point (C), the fibers fed on the surface (9) are seized by the rotating core (4) and wound up. At the contact point (C), a fiber catching device (12) is likewise arranged, having an air-permeable surface (11) behind which a vacuum is maintained. Fibers fed along the fiber feeding and holding surface (9) which separate from this surface (9) before they have been wound up completely on the core (4) are sucked against the air-permeable surface (11) of the fiber catching device (12) and retained until they have been completely wound up. In this way, all fibers are wrapped onto the core (4) in stretched condition even at high operating velocities.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
D02G 3/36 (2013.01 - EP US)
Designated contracting state (EPC)
AT DE FR GB IT
DOCDB simple family (publication)
EP 0188220 A2 19860723; EP 0188220 A3 19900117; EP 0188220 B1 19930811; AT E92982 T1 19930815; CH 665854 A5 19880615; DE 3688849 D1 19930916; ES 550990 A0 19880601; ES 8802461 A1 19880601; JP H0651934 B2 19940706; JP S61167036 A 19860728; US 4658574 A 19870421
DOCDB simple family (application)
EP 86100147 A 19860108; AT 86100147 T 19860108; CH 21385 A 19850117; DE 3688849 T 19860108; ES 550990 A 19860117; JP 516086 A 19860116; US 81757686 A 19860110