Paper web streak drying system

Details Paper web streak drying system Paper web streak drying system

1977-01-17

1978-06-27

Sprague, Kenneth W.

Drying and gas or vapor contact with solids

Apparatus

Rotary drums or receptacles

34114, 34160, F26B 1102

Patent

active

040966437

ABSTRACT:
A moisture profiling apparatus is provided for use with continuous running webs, particularly paper but useful for other permeable webs, having a series of adjacent compartments extending transversely of the web guide means and provided with means to selectively vary the quantity, velocity and temperature of gaseous drying medium impinging on the surface of the web, so as to modify variations in the moisture profile transversely of the web. The profiling hood is generally used in combination with a dryer drum, which may be a hollow drum provided with a plurality of transversely extending vacuum chambers and means to control the vacuum conditions in the drum chambers, so as to further modify the flow conditions of the gaseous drying medium, usually air.

REFERENCES:
patent: 1867256 (1932-07-01), Egli
patent: 2174744 (1939-10-01), Hill
patent: 3085347 (1963-04-01), Justus
patent: 3089252 (1963-05-01), Daane et al.

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