Process and apparatus for cleaning the blanket cylinders of a ro

Details Process and apparatus for cleaning the blanket cylinders of a ro Process and apparatus for cleaning the blanket cylinders of a ro

1990-10-29

1992-03-24

Burr, Edgar S.

Printing

Cleaning attachments

101488, B41L 4100

Patent

active

050977644

ABSTRACT:
This invention relates to a process and apparatus for cleaning the rubber blankets of a rotary offset printing press while the web is running. The cleaning agent used to remove ink and paper residue from the rubber blanket is partially transferred to the web and passed to the dryer. At an advanced stage of the printing run, where we can observe a rise and subsequent drop in the ink residue curve paralleled by a corresponding curve for the cleaning solution load, undesirably high fume release levels may occur. These fume levels may, on one hand, be controlled via the cleaning program. On the other hand, it is possible to adjust these fume levels by influencing the fume release through the application of a suitable agent to the web surface. The application of this material will inhibit the fume release and alter the component moieties in the fumes while additionally permitting the released components to be sealed off. The material utilized is predominantly water. The dryer inlet section is equipped with a spraying system which is fed the correct dose (in terms of quantity and time) of said medium to ensure the lowest possible concentration of explosive or noxious fumes.

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