Web Lines

MD Wrinkle Formation Causes and Cures

MD (machine-direction) wrinkle problems (sometimes called tin canning) still plague many converters and/or film suppliers. The two main contributing parameters

Slitting Adhesive-Coated, Low-Strength Films

Low-strength films, such PE or cast PP, sometimes are coated with an adhesive and slit into customer-sized rolls. Low-strength films do not have sharply

Belt Tracking Problems Require Careful Attention

Many wide-belt processes, whether they are made of metal, fabric, or plastic, may experience tracking problems. Some will have tracking problems even

Web Scratch Solution: Regulate Your Running Rolls

Driven rolls also may scratch the web surface, even though they are very accurately speed-controlled.

Over-Tensioned Webs and What to Do about Them

Webs are often tensioned beyond their elastic limit in specialty-type processes such as metallizing. Usually, the high tension is in a zone where web

WEB SOLUTIONS

The key to a successful and low-cost upgrade is to have a competent engineering analysis done of all the critical machine interactions…

A Proposal for Spreading Base Web During Melt Extrusion

Melt extruded resin polymers on cloth and other webs sometimes result in transverse direction (TD) curl of the laminate. And this curl often causes poor roll formation when the base roll is slit into large-diameter, narrow-width slit rolls.

A Glossary of Descriptive TermsSixth Installment

Shaftless unwind/rewind stands: Basic pieces of equipment used in holding the supply roll(s) and production roll(s) on the converting machine. These stands

A Glossary of Descriptive Terms - Fifth Installment

Here is the fifth in this series of glossary columns, intended to improve the technical communication between new and seasoned members of the converting

A Glossary of Descriptive Terms, Fourth Installment

I have had very positive feedback from the glossary of descriptive terms that I began in the September 2000 issue (see October and December issues for

A Glossary of Descriptive TermsThird Installment

This column is a continuation of the glossary of terms that I began in the September 2000 issue for the purpose of improving communications in the converting

A Glossary of Descriptive TermsSecond Installment

Bill Hawkins continues his glossary of web handling terms for readers who are new to the industry and for those who are not new but have questions about different versions of these terms.

A Glossary of Terms to Help Avoid Failure to Communicate

There are many terms used to describe similar things in the converting industry. These vocabulary differences can present communication problems around

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