Water repellant meltblown webs and laminates
US6762137B2 · kind B2 · utility
5Cited by
29References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2001 |
| Grant date | Jul 13, 2004 |
| Priority date | — |
| Expiry date | Apr 23, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/696
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Nonwoven webs with good barrier properties are disclosed. The nonwoven webs can be, for instance, meltspun webs such as meltblown webs and spunbonded webs. In accordance with the present invention, a hydrophobic agent is incorporated into the polymer that is used to produce the web for improving the barrier properties of the web. Hydrophobic agents that may be used in accordance with the present invention include polydimethyl siloxanes and guerbet esters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.