Elastomeric nonwovens
US7902093B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 26, 2007 |
| Grant date | Mar 8, 2011 |
| Priority date | — |
| Expiry date | Jun 29, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/659
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A nonwoven fabric and disposable articles comprising the same are provided. The nonwoven fabric can include one or more facing layers thermally bonded to one or more inner layers. The facing layers are inelastic or partially elastic nonwoven webs comprising one or more propylene-based polymers. The facing layer has a permanent set above 30%. The inner layers are elastic nonwoven webs comprising one or more propylene-based polymers and one or more slip agents. The inner layer has a permanent set below 28%, and the one or more propylene-based polymers have (i) 60 wt % or more units derived from propylene, (ii) isotactically arranged propylene derived sequences, and (iii) a heat of fusion less than 45 J/g.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.