Polypropylene sheets are flat, rigid sheets made from polypropylene, a thermoplastic polymer. These sheets are produced through extrusion, where molten polypropylene is forced through a die to create a flat sheet. These sheets are available in various thicknesses and colours. PP Sheets are often used for applications that require a lightweight and durable material. https://www.cosmofilms.com/plastech/product/pp-sheets