Non-woven fabric and method and apparatus for making the same
US5312500A · kind A · utility
54Cited by
5References
17Claims
0Family size
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Inventors
Key dates
| Filing date | Dec 4, 1990 |
| Grant date | May 17, 1994 |
| Priority date | — |
| Expiry date | Dec 4, 2010 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD04H3/16
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A non-woven fabric is characterized by including a filament layer in which one or more continuous filaments composed of a polymeric material are spirally collected substantially along a shape obtained by offsetting an ellipse having an elongated major axis in a plane. This non-woven fabric can be obtained by spinning a filament composed of a polymeric material, vibrating the filament, amplifying vibration of the filament, and collecting the filament into an elliptic shape having an elongated major axis so that the filament is arranged in a direction of the major axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.