Polypropylene Pop Quiz

Jeff Robinson, marketing representative, packaging, FLEXcon

Q: If a converter switches to a thinner polypropylene label construction, are dies used with the former label construction typically still usable?

A: On polypropylene label constructions with a minimum caliper of 1.5 mils, historically we have seen that the same die may be acceptable when a converter switches to a polypropylene construction that is less than 1 mil thinner than what is currently being used and the liner is unchanged. When the face stock change is greater than 1 mil thinner, retooling has typically been necessary. Downgauging the face sheet makes die-cutting much more critical.