Method of making nonwoven material having discrete three-dimensional deformations with wide base openings
US10500826B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 3, 2015 |
| Grant date | Dec 10, 2019 |
| Priority date | — |
| Expiry date | Feb 11, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2555/02
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of forming deformations in a nonwoven web includes the steps of: a) providing a precursor nonwoven web; b) providing a pair of forming members which include: a first forming member having a surface comprising a plurality of discrete, spaced apart male forming elements; and a second forming member having a surface comprising a plurality of recesses in the second forming member, wherein the recesses are aligned and configured to receive the male forming elements therein, wherein the recesses have a plan view periphery that is larger than, and may completely surround, the plan view periphery of the male elements; and c) mechanically deforming the precursor nonwoven web with the forming members by placing the precursor nonwoven web between the forming members. The method forms a nonwoven web having a generally planar first region and a plurality of discrete deformations. The deformations form protrusions that extend outward from the first surface of the nonwoven web and a base opening adjacent to the second surface of the nonwoven web. The maximum interior width of the cap portion of the protrusions is wider than the width of the base opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.