APPARATUS AND PROCESS FOR DEFORMING A WEB

WIPO Patent Application WO/2022/088786

A1

The present invention relates to an apparatus for deforming a web to created deformed nonwoven which comprises a pair of counter-rotating rolls that form a nip therebetween, the pair of rolls comprising: a first roll comprising a surface, a plurality of protrusions extending radially outwardly from the surface of the first roll, and a plurality of concaves formed inwardly from the surface of the first roll; and a second roll comprising a surface; and a process for producing a deformed web comprising the steps of (a) forming a fibrous web; (b) subjecting the fibrous web to bonding treatment to bond at least part of fibers constituting the fibrous web to obtain a precursor nonwoven; and (c) subjecting the precursor nonwoven to a deformation forming unit comprising an apparatus according to the present invention.

LIU XIAOXIN (CN)
TONG TONG (CN)
SUN KUN (CN)
DONG XIAOHUI (CN)

PCT/CN2021/108207

May 05, 2022

July 23, 2021

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PROCTER & GAMBLE (US)
LIU XIAOXIN (CN)
TONG TONG (CN)
SUN KUN (CN)
DONG XIAOHUI (CN)

A61F13/15; B29C59/04; D04H1/54

WO2016040120A1	2016-03-17
WO2007144469A1	2007-12-21
WO2018004478A1	2018-01-04
WO2017156162A1	2017-09-14
WO2012148935A1	2012-11-01
WO2004080341A2	2004-09-23

JP2011137246A	2011-07-14
US20190066455W	2019-12-16

"Shape-Memory Polymers", ANGEW. CHEM. INT. ED., vol. 41, 2002, pages 2034 - 2057
"Recent advances in shape memory polymers and composites: a review", J MATER SCI, vol. 43, 2008, pages 254 - 269

LIU, SHEN & ASSOCIATES (CN)

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