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Wrinkling of wide webs
(Oklahoma State University, 2011-06)
Wrinkling remains one of the top causes of converting process waste. Though wrinkles created by roller misalignment and web bending (shear wrinkles) are well-understood, nearly all the published research and modeling has ...
Wrinkling of foils
(Oklahoma State University, 2011-06)
Aluminum and copper metal webs less than 150 microns (6-mils) are considered foils. Demand for aluminum and copper foils are growing, driven by growing markets for flexible electronics, flat panel displays, lithium batteries, ...
Measurement of web feed rates in rubber covered nip roller applications and the impact on wrinkle formation
(Oklahoma State University, 2011-06)
Nip rollers are used extensively in web handling processes; however, rubber-covered rollers have the unwanted and often unpredictable characteristic of unknown surface speed owing to coupling between circumferential and ...