MULTI-LAYER COMPOSITE LONGITUDINAL ELASTIC NON-WOVEN FABRIC

WIPO Patent Application WO/2024/040726

A1

The present invention relates to the technical field of composite fabrics, and in particular to a multi-layer composite longitudinal elastic non-woven fabric. According to the present invention, outer non-woven fabric layers, ventilation holes, composite welding spots, and tensile welding spots are arranged on an inner elastic film layer, so that the use effect of the longitudinal elastic non-woven fabric is more flexible and stable. The present invention has the following advantages: first, the ventilation holes are pre-formed in the inner elastic film layer before compounding, so that the air permeability of the longitudinal elastic non-woven fabric is controllable, adjustable, quantifiable, and specifically characterizable; second, in the three-layer structure of the longitudinal elastic non-woven fabric, welding spot connecting structures are not only provided between the outer non-woven fabric layers and the inner elastic film layer, but also between the two outer non-woven fabric layers, and finally, the structural integrity of the longitudinal elastic non-woven fabric is better, and when a tensile force is increased under the maximum stretching length, the longitudinal elastic non-woven fabric is relatively not prone to cracking and layering.

WEN LIQIANG (CN)
TANG KUIDI (CN)

PCT/CN2022/126042

February 29, 2024

October 19, 2022

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ZHEJIANG HUACHEN NONWOVENS CO LTD (CN)

B32B27/00; B32B3/24; B32B5/02; B32B7/05; B32B27/12; B32B27/32; B32B27/40; B32B37/00; B32B37/06; B32B37/10

JP2017064230A	2017-04-06
JP2017225508A	2017-12-28
CN107753184A	2018-03-06
CN113558866A	2021-10-29

ZHEJIANG KG IP LAW FIRM (CN)

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