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Journal articles
Magazine articles
Open Access
Calender barring review with experiences, TAPPI Journal July 2022

ABSTRACT: Excessive calender vibration affects all styles of calender stacks from single to multi-nip, all hard rolls, or a combination of hard and soft rolls. Calender vibration can be forced vibration or self-excited vibration. Forced vibration occurs at the first few harmonics of the calender roll rotational speeds and is caused by imbalance, misalignment, eccentricity, etc. Self-excited vibration, the focus of this paper, occurs at higher frequencies. Feedback paths for self-excited vibration must be understood in order to ameliorate the problem. This is presented in the context of the historical development of the theory of self-excited feedback mechanisms, followed by a survey of self-excited feedback mechanisms in various types of calender stacks. Methodology to determine which feed-back path is present and techniques to control or eliminate the resulting vibration follow. To obtain a flavor of the types of problems faced and practical remedial actions, a variety of experiences with barring issues are provided.

Journal articles
Open Access
Application of Imaging Reflectometry to Studies of Print Mottle on Commercially Printed Coated Papers, TAPPI JOURNAL January 2008

Application of Imaging Reflectometry to Studies of Print Mottle on Commercially Printed Coated Papers, TAPPI JOURNAL January 2008

Journal articles
Open Access
Effects of debonding agents and refining on the properties of deinked pulp, TAPPI JOURNAL, July 2008

Effects of debonding agents and refining on the properties of deinked pulp, TAPPI JOURNAL, July 2008

Journal articles
Open Access
Hot-water pre-extraction from loblolly pine (Pinus taeda) in an integrated forest products biorefinery

Hot-water pre-extraction from loblolly pine (Pinus taeda) in an integrated forest products biorefinery, TAPPI JOURNAL June 2008

Magazine articles
Open Access
Editor's Note: Collecting industry information that counts,

Editor's Note: Collecting industry information that counts, TAPPI JOURNAL April 2010

Journal articles
Open Access
Reappraisal of the role of turpentine vapor in noncondensible gas explosions, TAPPI JOURNAL April 2010

Reappraisal of the role of turpentine vapor in noncondensible gas explosions, TAPPI JOURNAL April 2010

Journal articles
Open Access
Applications of tension and nip load profile measurement using a novel roll mounted electret film sensor, TAPPI JOURNAL April 2010

Applications of tension and nip load profile measurement using a novel roll mounted electret film sensor, TAPPI JOURNAL April 2010

Journal articles
Open Access
Effects of impregnation time on hardwood kraft pulp characteristics and papermaking potential â?¢ a mill study, TAPPI JOURNAL April 2010

Effects of impregnation time on hardwood kraft pulp characteristics and papermaking potential • a mill study, TAPPI JOURNAL April 2010

Journal articles
Open Access
Starch-modified fillers for linerboard and paper grades: A perspective review, TAPPI JOURNAL April 2010

Starch-modified fillers for linerboard and paper grades: A perspective review, TAPPI JOURNAL April 2010

Journal articles
Open Access
Ozone-enhanced bleaching of softwood kraft pulp, TAPPI JOURNAL August 2010

Ozone-enhanced bleaching of softwood kraft pulp, TAPPI JOURNAL August 2010

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