Metallized PET Film and VMPET refer to the same material: a composite made by coating PET film with an ultra-thin aluminum layer via vacuum metallization. This process evaporates aluminum into vapor under high vacuum, depositing a 0.01–0.1 micron layer (1/1000th of a hair) on PET, bonded physically or chemically without solvents. The structure includes a 5–50 micron PET substrate for strength, the metallized layer for barrier properties (blocks oxygen, moisture, UV), and optional coatings for printability. It offers better barrier performance than plain plastic films (though less than pure aluminum foil), with metallic gloss (adjustable to matte) and PET’s durability for high-speed processing. Key uses include food packaging (light/moisture protection), electronics (antistatic packaging), and printing (hot stamping). Lighter and cheaper than aluminum foil, it balances performance and cost, ideal for applications needing moderate barrier and decorative appeal.