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Explicit simulations of wrinkle formation due to web non-uniformity
(Oklahoma State University, 2017-06)
It is very common to laminate different materials together and then form, transport and process a web with non-uniform structure in the product manufacturing industry. The periodic media analysis (PMA) method in Abaqus/Explicit ...
Japanese patents investigation report on web handling technology
(Oklahoma State University, 1991-05)
In order to initiate programs in web handling, it is necessary to understand the technical vector that has developed in the field. In this paper we have investigated 1784 Japanese patents on web handling technology that ...
Optimizing nipped roller systems
(Oklahoma State University, 2017-06)
Nipped rollers are central to many web converting processes - printing, coating, embossing, calendaring, and winding. Uniform products require uniform load and pressure from the nipping process. Uneven nipping not only ...
Shear slitting of aluminum webs
(Oklahoma State University, 2005-06)
Shear slitting of aluminum webs using both disk knives and block knives were investigated using a laboratory slitter. The effects of the clearance, overlap, blade overdrive, and cant angle on burr height were studied on ...
Machine direction registration dynamics model of a rotary printing press
(Oklahoma State University, 2017-06)
We derive an analytical model of the machine direction registration dynamics of a continuous-web, electronic line shaft (ELS) rotary printing press. We use the model to quantify the affect of tension disturbances on machine ...
Taxonomy of wrinkles
(Oklahoma State University, 2009-06)
Taxonomy is the practice and science of classification. Without taxonomy, everything is lumped into one pot and confusion prevails. All wrinkled or buckled webs should not be filed under one category. Just as birds are ...
Strain-inducing mechanism of a rolling nip on a paper stack
(Oklahoma State University, 2003-06)
The rolling of a cylindrical drum on a stack of separate paper sheets is studied using the finite element method. A two dimensional model under plane strain conditions is considered. The material of the sheets is modeled ...
Updated model for lateral displacement of nonuniform webs
(Oklahoma State University, 2009-06)
The theory for lateral mechanics of nonuniform webs in the open literature is believed to be flawed and an updated theory is presented. The theory is based on beam theory and a set of boundary conditions. The so-called ...
Gauge optimization of the reference tension and nip-load in winding systems using wound internal stresses calculation
(Oklahoma State University, 2013-06)
In the winding process, the quality of the roll is directly related to its stress state. The winding tension and nip-load are the most significant parameters which play an important role in the stresses generated within a ...
Real time dynamic simulation of a paper winder
(Oklahoma State University, 2003-06)
Typically, large portions of the winder control system software are tested during the commissioning process. This is inefficient since production is shut down and financial pressures limit the time available for testing. ...