Reviewing the basics of plastic sheet materials starts with understanding their construction. Comprised of two parts, a base and a cap material, plastic engraving sheet stock is engineered for optimum engraving and cutting results.
An important fact about these plastic sheets is that they are thin. The cap material is super thin, measuring just a few thousandths of an inch thick. It is a combination of the thin gauge and plastic formulation that gives this substrate the flexibility and durability that make it ideal for so many applications including plaque plates, awards, name badges, and signage to name just a few. These thin plastic substrates also have a downside: they are susceptible to the heat of the laser, which can generate undesirable distortion and warping.
-Mike Fruciano, Coherent