Method of making heteroconstituent and layered nonwoven materials
US5853635A · kind A · utility
28Cited by
37References
57Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 18, 1997 |
| Grant date | Dec 29, 1998 |
| Priority date | — |
| Expiry date | Jun 18, 2017 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01D5/098
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention is directed to a method of forming a heteroconstituent nonwoven web including a mixture of different filament types simultaneously formed into the same web. The filament types may differ as to polymer composition, additive loadings, fiber size, fiber shape, and/or degree of crimping. The invention is also directed to a method of forming a multilayered nonwoven structure in which different filament types constituting different layers are simultaneously formed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.