A laminate is a material that is constructed by uniting two or more layers of material together. The process of creating a laminate is lamination, which generally refers to placing something between layers of plastic and bonding them with heat and/or pressure, usually with an adhesive. The materials used in laminates can be the same or different. An example of lamination using different materials would be the application of a layer of plastic film — the “laminate” — on either side of a sheet of glass — the laminated subject. Vehicle windshields are commonly made by laminating a tough plastic film between two layers of glass.
Polypropylene (PP), is a thermoplastic polymer, made by the chemical industry and used in a wide variety of applications, including packaging, textiles, stationery, plastic parts and reusable containers of various types, laboratory equipment, loudspeakers, automotive components and polymer banknotes. An addition polymer made from the monomer propylene, it is rugged and unusually resistant to many chemical solvents, bases and acids.