Method of manufacturing a foam fibrillated fibrous web from an isotactic polypropylene and polyethylene blend
US3965229A · kind A · utility
10Cited by
4References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 14, 1973 |
| Grant date | Jun 22, 1976 |
| Priority date | — |
| Expiry date | Dec 14, 1993 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31938
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Non-woven fabrics are produced from oriented foam fibrillated webs containing 75 to 98 wt. % polypropylene and 2 to 25 wt. % polyethylene. The webs are assembled in a plurality of layers and then bonded by heat and pressure either with or without the presence of an adhesive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.