Particle Management: An Effective Stickie Control Approach, 1994 Pulping Conference Proceedings

A. M. Capozzi, D.S. Rende

Secondary fiber introduces a number of contaminants into the papermaking system. The control of contaminants, classified under the general term of “stickies,” has become increasingly more difficult as mills continue to close whitewater loops and are forced to push deeper into the recovered fiber stream in order to acquire and adequate supply of recycled fiber.

Particle management describes a stickie control program that has proven effective in controlling the contaminants released into the papermaking system during the processing of wastepaper and deinked market pulp. Emphasis is given to a discussion of the program’s mechanism of control; a control mechanism founded on the emulsification and retention of contaminants. Test methods that were developed to monitor the effects of the program are also discussed. Case histories are provided to emphasize the program benefits of reduced stickie deposition on paper machine wires, rolls, felts, and dryer cans; reduced downtime for cleaning; and improved finished sheet quality.