Apparatus for crosslinking individualized cellulose fibers
US5437418A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 13, 1992 |
| Grant date | Aug 1, 1995 |
| Priority date | — |
| Expiry date | Jan 13, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2013/530474
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An apparatus is disclosed for preparing a quantity of individual treated fibers from one or more fiber mats. The apparatus comprises a fiber treatment zone, and a conveyor for conveying each mat through the fiber treatment zone. In the treatment zone each mat is impregnated by an applicator with a treatment material, such as a crosslinking substance, and conveyed directly to an attrition device. The attrition device fiberizes the mats to form a fiber output having a low nit level, such as no more than about three, and a dryer both dries the fiber output and cures the crosslinking substance. The fiberizer is configured to minimize the accumulation of fiber at locations therein. Fiber is transported from the attrition device to the dryer at a high velocity under reduced pressure to promote drying. A heated retention bin is provided after drying to increase curing time in the system. A thermobonding agent may be added to the dried and cured fibers to enhance the wet strength of webs made from the fiber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.