host posted on May 05, 2008 20:38
A dirty web can result in costly problems, rejects anddissatisfied customers. Packaging manufacturers converting paper, film, and foil materials have struggled for years to deliver the cleanest product possible. However, their quest is constantly thwarted by the very processes they perform to produce the end product.
Slitting, sheeting, coating, laminating, bag making, and other production processes create the particles that contaminate the web. Transporting the web through the production process causes a boundary layer of air that essentially traps the smaller particles. Contact and separation of the web material with the machine rollers generates static electricity that results in an electrostatic adhesion bonding contaminants to the web surface. The complication: the faster you try to operate the more complicated these problems become.
Contaminated surfaces cause print defects, coating uniformity problems, etc. resulting in quality problems, costly rejects, and ultimately dissatisfied end-user customers.
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