Frequently Asked Questions
Corrugated plastic is what almost all lawn signs are made of. Other names for the same materials include corplast, coroplast, and sometimes even plastic cardboard.Technically speaking, it is a twinwall plastic that has fluting in the middle of two plastic sheets. Corrugated plastic is often made from polypropylene. Other uses of polypropylene beyond signage include reusable packaging, plastic containers, pet cages and more.