On our equipment, we have a tool that closes on a film and welds the 2 parts on PP film. Like closing the top (or bottom) of a cereal bag, potatoe chips, Doritos, etc.
We are having problems maintaning the temperature on this tool when the machine stops and starts. On some of the tool, the...
I'm looking for an old theory that explains why belts on a belt sander stays on the center of the convex roller. The same theory applies to flat belt on a crowned pulley (on old farm equipment), some paper mill applications, vacuum cleaned belts etc.
Does anyone know where I can find the theory...
