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Journal articles
Open Access
DTPMPA: polyamino polyphosphonic acid and its use in paper processes-Part 1: The chemistry of pulp bleaching with DTPMPA and its impact on fines retention, TAPPI JOURNAL June 1988 88JUN171

DTPMPA: polyamino polyphosphonic acid and its use in paper processes-Part 1: The chemistry of pulp bleaching with DTPMPA and its impact on fines retention, TAPPI JOURNAL June 1988

Journal articles
Open Access
Pitch deposition in papermaking and the function of pitch-control agents, TAPPI JOURNAL June 1988

Pitch deposition in papermaking and the function of pitch-control agents, TAPPI JOURNAL June 1988

Journal articles
Open Access
A platform for millwide information systems, June 1988, Tappi Journal 88JUN61

A platform for millwide information systems, TAPPI JOURNAL June 1988

Journal articles
Open Access
Advanced disturbed control of industrial stem turbines, June 1988, TAPPI Journal 88JUN72

Advanced distributed control of industrial steam turbines, TAPPI JOURNAL June 1988

Journal articles
Open Access
Computer-assisted ultrasonic detection and measurement of cracks in pressure vessels, TAPPI JOURNAL March 1988

Computer-assisted ultrasonic detection and measurement of cracks in pressure vessels, TAPPI JOURNAL March 1988

Journal articles
Open Access
Corrosion fatigue testing of suction roll alloys, TAPPI JOURNAL March 1988

Corrosion fatigue testing of suction roll alloys, TAPPI JOURNAL March 1988

Journal articles
Open Access
The design of aboveground fiberglass-reinforced piping systems, TAPPI JOURNAL March 1988

The design of aboveground fiberglass-reinforced piping systems, TAPPI JOURNAL March 1988

Journal articles
Open Access
Automated control of washer shower water at ITT Rayonier, TAPPI JOURNAL March 1988

Automated control of washer shower water at ITT Rayonier, TAPPI JOURNAL March 1988

Journal articles
Open Access
Dimensional stability of mechanical pulps - drying shrinkage and hygroexpansivity, TAPPI JOURNAL, June 1993, Vol. 76(6)

Dimensional stability of mechanical pulps - drying shrinkage and hygroexpansivity, TAPPI JOURNAL, June 1993, Vol. 76(6)

Journal articles
Magazine articles
Open Access
Viscoelastic web curl due to storage in wound rolls, TAPPI Journal July 2020

ABSTRACT: Winding is often the final operation in a roll-to-roll manufacturing process. Web materials, i.e., materials that are thin compared to their length, are wound into rolls because this form is the only practical means to store them. The resulting bending strains and associated stresses are large for thick webs and laminates. As many webs are viscoelastic on some time scale, bending stresses lead to creep and inhomogeneous changes in length. When the web material is unwound and cut into discrete samples, a residual curvature remains. This curvature, called curl, is the inability for the web to lie flat at no tension. Curl is an undesirable web defect that causes loss of productivity in a subsequent web process. This paper describes the development and implementation of modeling and experimental tools to explore and mitigate curl in homogenous webs. Two theoretical and numerical methods that allow the prediction of curl in a web are developed: a winding software based on bending recovery theory, and the implementation of dynamic simula-tions of winding. One experimental method is developed that directly measures the curl online by taking advantage of the anticlastic bending resulting from the curl. These methods are demonstrated for a low-density polyethylene web.

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