Coroplast is a brand name of corrugated plastic and a registered trademark of Coroplast, LLC, a member of the Inteplast Group of companies.

Coroplast, also called pp plate sheet (“Fluted Polypropylene Sheet”), is lightweight (hollow structure), non-toxic, waterproof, shockproof, long-lasting material that resists corrosion. Compared with cardboard, Coroplast has the advantages of being waterproof and colorfast.

The Coroplast composition can be altered to add anti-static properties using the masterbatch technique. This particular masterbatch produces a conductive, anti-static plastic hollow board sheet. (Conductive plate surface resistivity can be controlled between 10³ ≈10⁵; anti-static sheet surface resistivity can be controlled between 10⁶ ≈10¹¹.)

Coroplast is sturdy, light, resilient, and inexpensive, making it ideal for indoor/outdoor signage, electronics, packaging, machinery, light industry, postal services, food, pharmaceuticals, pesticides, household appliances, advertising, decoration, stationery, magneto-optical technology, bio-engineering and other medical and health industries.

Coroplast is widely used in advertising background, stationery materials, industrial packaging products, shock, etc. The most common are crates, detachable combination boxes, product packaging boxes and boxes in the partition and so on. Currently widely used international plastic materials. It is also used for some animal cages. Coroplast received worldwide attention when the material was used to make an extremely light, folding kayak (Oru Folding Kayak). It is also used for cages for domestic animals such as Guinea Pigs.

Because of Coroplast’s durability and weather resistant properties it is commonly used for outdoor advertising, billboards, and signage.