Global patent index - EP 1038997 A1

EP 1038997 A1 2000-09-27 - Apparatus for interlacing at least one staple fibre yarn with an elastane yarn

Title (en)

Apparatus for interlacing at least one staple fibre yarn with an elastane yarn

Title (de)

Vorrichtung zur Luftverwirbelung mindestens eines Stapelgarns mit Elastan

Title (fr)

Dispositif pour l' entrelacement d'au moins un fil de fibres discontinues avec un fil élastique à base d'élasthane

Publication

EP 1038997 A1 (DE)

Application

EP 99106310 A

Priority

EP 99106310 A

Abstract (en)

The appts. to combine a staple fiber yarn (F) with an elastane stretch yarn (E), by an air eddy action, has at least three jets (2,2',2) in succession where the yarns (F,E) are continuously eddied by air. The two outer jets (2,2) twist the yarns in one direction, and the center jet (2') twists the yarns in the opposite direction. A unit to block yarn twisting is in front of the first jet (2) and after the final jet (2) in the direction (A) of yarn travel. The yarn twist block is applied by yarn guides (3), offset from the axis of the jets (2,2',2). Each yarn guide (3) works with a yarn deflector (4), offset from the jet axis in the opposite direction to the yarn guide position. The yarn guides (3) and deflectors (4) are rotating rollers. The intervals are equal between the jets (2,2',2), at 30-80 mm and pref. 44 mm. The gaps between the yarn guides (3) and their adjacent jets are equal, but less than the gaps between the jets and pref. one-half the jet interval. The jets (2,2',2) are connected to an air reservoir chamber (1), with two air connections (5) to give an equal air delivery to all the jets (2,2',2). The air delivery to the jets is controlled by a proportional valve to set the air pressure as a function of the yarn travel speed. A controlled yarn brake is at the entry into the assembly (V), with a clamping force which is indirectly proportional to the yarn movement speed. The entry zone into the assembly (V) has a sufficient length to compensate for tension swings in the two yarns (E,F), or the staple fiber yarn (F) and the elastane stretch yarn (E) are fed into the system by separate feeds (6,7).

Abstract (de)

Die Vorrichtung (V) enthält drei hintereinander angeordnete Düsen (2, 2', 2"), welche die Garne (E, F) kontinuierlich mit Luft verwirbeln, wobei in den beiden äusseren Düsen (2, 2") eine Verdrehung des Garns in der einen und in der mittleren Düse (2') in der anderen Dreh-richtung erfolgt. In Garnlaufrichtung (A) sind vor der ersten (2) und nach der letzten Düse (2") Mittel zur Blockierung der Verdrehung vorgesehen. Diese Blockierungsmittel sind durch relativ zur Achse der Düsen (2, 2', 2") versetzt angeordnete Garnführungen (3) gebildet. <IMAGE>

IPC 1-7 (main, further and additional classification)

D02J 1/08; D02G 1/04

IPC 8 full level (invention and additional information)

D01H 1/115 (2006.01); D01H 13/08 (2006.01); D02G 1/04 (2006.01); D02G 3/32 (2006.01); D02J 1/08 (2006.01)

CPC (invention and additional information)

D02G 3/328 (2013.01); D01H 1/115 (2013.01); D01H 13/08 (2013.01); D02G 1/04 (2013.01); D02J 1/08 (2013.01)

Citation (search report)

Designated contracting state (EPC)

BE CH DE ES FR GB IT LI

EPO simple patent family

EP 1038997 A1 20000927

INPADOC legal status

2005-08-03 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20050125

2001-06-13 [AKX] PAYMENT OF DESIGNATION FEES

- Ref Legal Event Code: AKX

- Free Format Text: BE CH DE ES FR GB IT LI

2001-05-16 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20010320

2000-09-27 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): BE CH DE ES FR GB IT LI

2000-09-27 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Ref Legal Event Code: AX

- Free Format Text: AL;LT;LV;MK;RO;SI