Packaging major Inteplast Group has acquired its main competitor in corrugated plastic sheet, Coroplast Inc. Inteplast gets corrugated sheet plants in Vanceburg, Ky., and Granby, Quebec, as well ...

Coroplast Gray is a big fan of coroplast, sheets of inexpensive, corrugated plastic found in some hardware stores, which can be used to make lawn signs and many other things.

Until four years ago, Coroplast, a 90-year-old German manufacturer, only produced its technical tapes at a plant in Wuppertal, Germany, near Dusseldorf.