Dealing with film scratches, wrinkles, and air entrapment is a problem that many converters are faced with on a regular, if not daily basis. Part of the problem is the rollers they have to work with at the nip point. ...

The web which is coated with a coating agent on the surface to add a function is called coated web. This coated web is often made into wound roll to ease handling and storage after coating, and then it is passed to next ...

This article proposes a process direction dynamic model for closed loop belts and open loop webs used in high precision transport systems such as those found in printers where micron level registration is required. It gives ...

A pseudo 3D winding model that has considered orthotropic viscoelastic effects during winding and storage has been developed and implemented in a code revised from the 2D viscoelastic winding code developed by Qualls and ...

Winding paper in contact with a drum leads to the production of nip-induced tension which, to a high degree, influences the structure of the roll. Thus, comprehending the processes in the nip, including each parameter ...

Avoidance of web handling-related imperfections is often a challenge. As an example, the limit of web-to-roller traction is typically not detected until it is exceeded, resulting in product damage. Detection is often made ...

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. ...

Stable web transport through processing machinery is critical in the web processing industry. Demands for improved performance under a wide variety of dynamic conditions and web materials are placing additional emphasis ...

Web spreading systems are used in converting machines in order to guarantee a folding free web transport and a sufficient slit gap or slit separation. The adjustments, dependent on the respective application, are carried ...