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Patent Searching and Data


Title:
APPARATUS AND PROCESS FOR DEFORMING A WEB
Document Type and Number:
WIPO Patent Application WO/2022/088786
Kind Code:
A1
Abstract:
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.

Inventors:
LIU XIAOXIN (CN)
TONG TONG (CN)
SUN KUN (CN)
DONG XIAOHUI (CN)
Application Number:
PCT/CN2021/108207
Publication Date:
May 05, 2022
Filing Date:
July 23, 2021
Export Citation:
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Assignee:
PROCTER & GAMBLE (US)
LIU XIAOXIN (CN)
TONG TONG (CN)
SUN KUN (CN)
DONG XIAOHUI (CN)
International Classes:
B29C59/04; A61F13/15; D04H1/54
Domestic Patent References:
WO2016040120A12016-03-17
WO2007144469A12007-12-21
WO2018004478A12018-01-04
WO2017156162A12017-09-14
WO2012148935A12012-11-01
WO2004080341A22004-09-23
Foreign References:
JP2011137246A2011-07-14
US20190066455W2019-12-16
Other References:
"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
Attorney, Agent or Firm:
LIU, SHEN & ASSOCIATES (CN)
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