METHOD FOR PRODUCING A NON-WOVEN BY MEANS OF A ROLLER CARD

Title:

METHOD FOR PRODUCING A NON-WOVEN BY MEANS OF A ROLLER CARD

Document Type and Number:

WIPO Patent Application WO/2020/024410

Kind Code:

A1

Abstract:

It is disclosed a method and a roller card for producing a non-woven composed of synthetic fibres or man-made fibres produced from natural materials having a fibre length of from 12 to 25 mm and having a MD/CD ratio of less than 2: 1, wherein fibres or fibre tufts are supplied at the inlet side of a roller card (1) and, on a main cylinder (2), opened up into individual fibres and aligned by means of worker and stripper rolls (3, 4), then the resulting fibre web (20) is removed from the main cylinder (2) by means of at least two doffer rolls (5, 6), the diameters of the doffer rolls (5, 6) being at least 80 %of the diameter of the main cylinder (2), then the individual plies of fibre web being removed from each doffer roll (5, 6) by a respective condensing roll (7, 8) and deposited directly or indirectly on at least one transport belt (11, 12) and, immediately after the roller card (1), being joined and bonded to one another by means of hydrodynamic entanglement.

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Inventors:

HEETDERKS BODO (DE)
ZHANG WEIPING (CN)

Application Number:

PCT/CN2018/107792

Publication Date:

February 06, 2020

Filing Date:

September 27, 2018

Export Citation:

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Assignee:

TRUETZSCHLER GMBH & CO KG (DE)
TRUETZSCHLER TEXTILE MACHINERY SHANGHAI CO LTD (CN)

International Classes:

D04H1/46; D01G15/26

Foreign References:

CN102653900A	2012-09-05
US20050102801A1	2005-05-19
CN104911750A	2015-09-16
CN104389109A	2015-03-04
US20140202494A1	2014-07-24
EP0661394B1	1999-06-30
US20050102801A1	2005-05-19
CN102653900A	2012-09-05
US3546755A	1970-12-15
EP0938601B1	2001-12-19
DE10112375A1	2002-09-26

Other References: