Diaper with split puff bonded facing
US4044768A · kind A · utility
29Cited by
5References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 23, 1976 |
| Grant date | Aug 30, 1977 |
| Priority date | — |
| Expiry date | Feb 23, 1996 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2013/15439
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A diaper is provided having a facing layer comprising a fibrous nonwoven web having an exceptionally low weight per unit area for its loft and stength characteristics. The facing layer is made from an air laid web of mixed long and short fibers by impregnating the web with a volatile liquid composition containing a binder, rapidly vaporizing the volatile portions of the composition to cause puffing of the web while setting the web in puffed condition by solidification of the binder and thereafter splitting the puffed web into portions of lesser thickness and utilizing at least one of said portions as said facing layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.