Apparatus and process for deforming a web
US12351958B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 15, 2021 |
| Grant date | Jul 8, 2025 |
| Priority date | — |
| Expiry date | Oct 15, 2041 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD10B2509/026
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.