Method for cleaning rolls

Details Method for cleaning rolls Method for cleaning rolls

1996-08-07

1997-07-29

Warden, Jill

Cleaning and liquid contact with solids

Processes

Including use of vacuum, suction, or inert atmosphere

134 32, 134 33, 134 37, B08B 500, B08B 504

Patent

active

056518323

ABSTRACT:
A method and apparatus for cleaning the surface of a backing roll in a coater or a calender roll. The roll is cleaned by injecting steam from a steam injection chamber against the roll surface at a 15.degree. angle counter to the rotational direction of the roll. Steam impinging on the surface performs effective removal of accumulated dirt and the detached dirt is carried away on the web without a deleterious effect on the quality of the web. Steam injected against the roll is vacuumed away from the roll surface via a suction chamber, whereby the cleaning steam is prevented from escaping to the surroundings.

REFERENCES:
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patent: 4852209 (1989-08-01), Svenka et al.
patent: 5081950 (1992-01-01), Martin et al.
patent: 5092961 (1992-03-01), Keller
European Search Report, Application No. EP 93 11 7825, 1 Mar. 1994.
Annex to European Search Report, Application No. EP 93 11 7825, 3 Mar. 1944.
European Patent Office, Patent Abstract of Japanese Publication No. JP 63004948, Published Sep. 1, 1988.

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