Method for producing reticular nonwoven fabric
US5290377A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jul 16, 1991 |
| Grant date | Mar 1, 1994 |
| Priority date | — |
| Expiry date | Jul 16, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1098
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An improved method for producing a reticular nonwoven fabric in which the velocity of the transversely stretching line step can be much increased by providing the transversely stretching step with a longitudinally orienting step, thereby accelerating the whole production line. The method of the invention includes the continuous steps of: a first feeding step to feed a first film material; a longitudinally stretching step to stretch the first film material; a splitting step to split the longitudinally the stretched first film material; a laterally spreading step to spread the split film; a second feeding step to feed a second film material; a longitudinally orienting step to orient the second film material; a transversely slitting step to slit the oriented second film material; a transversely stretching step to stretch the slit second film material; and a laminating step to laminate the first film material with the second film material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.