Trim / waste disposal is a subject that is integral to efficient winding, but conceptually it can be a bit difficult to explain to customers who aren't familiar with managing waste. A lot of companies go to great lengths to try and minimise the amount of waste they generate, which makes sense as far as economics and environmental awareness, but sometimes waste cannot be avoided. The video below shows a trim winder that was a part of a l arge slitter we recently built for a regular customer of ours. This slitter rewinder was designed to convert large rolls of metallized polyester, which is supplied on rolls that are not coated the full width of the web, so a trim needs to be cut off during the winding / slitting process. Some customers wind trim waste material onto cores on the rewind shafts, and some let narrow trims fall to the floor, but while both options are workable both can be problematic for operators and potentially damaging to materials. Trim winders l...
Personal blog of a Slitter salesman.