Solid material comminution or disintegration – Apparatus – With temperature modification of material
Patent
1992-01-13
1995-08-01
Eley, Timothy V.
Solid material comminution or disintegration
Apparatus
With temperature modification of material
2411522, B02C 1108
Patent
active
054374189
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.
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Bolstad Clifford R.
Bowns Mark W.
Carney Allan R.
Elston Colin
Graef Peter A.
Eley Timothy V.
Weyerhaeuser Company
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