Process for forming a high loft, nonwoven web exhibiting excellent recovery
US10704173B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 9, 2017 |
| Grant date | Jul 7, 2020 |
| Priority date | — |
| Expiry date | Feb 17, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2007/008
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A process for forming a high loft, nonwoven web is disclosed. The process includes introducing a single molten polymer to a die having a plurality of nozzles. Emitting the molten polymer through the nozzles to form a plurality of filaments. Using air streams to facilitate movement and drawing of the filaments. Directing the filaments, which are transformed into fibers, towards a pair of heated moving surfaces. The pair of heated moving surfaces forming a convergent passage having an entry and an exit. Depositing the fibers into the entry of the convergent passage and routing the fibers between the pair of heated moving surfaces in a machine direction to form a high loft, non-woven web. The web having a fiber size distribution of from 0 μm to about 15 μm with at least about 25% of the fibers being above 4 μm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.