Soft and durable nonwoven web
US11083816B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 18, 2014 |
| Grant date | Aug 10, 2021 |
| Priority date | — |
| Expiry date | May 11, 2036 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD10B2509/026
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A nonwoven web that contains a plurality of fibers formed from a polyolefin composition is provided. The polyolefin composition contains a rigid propylene polymer that has a relatively high melting temperature and modulus of elasticity, which can provide good strength and durability to the nonwoven web. The polyolefin composition also contains a ductile propylene polymer that has a relatively high melt flow index, which can help achieve relatively fine fibers that minimize the stiffness of the web. In addition to a rigid and ductile polymer, the polyolefin composition also contains a slip additive (e.g., fatty acid derivative). Among other things, such an additive can even further enhance the overall softness of the composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.