The PET Release Liner market refers to the global market for polyethylene terephthalate (PET) release liners, which are used in various industries such as labeling, packaging, and medical devices. As a critical component in the manufacturing process, the PET Release Liner market size is estimated to be around $1.4 billion in 2025. The growth outlook for the PET Release Liner market forecast is promising, with a projected compound annual growth rate (CAGR) of 5.5% from 2026 to 2033, driven by increasing demand from the labeling and packaging industries. The market forecast indicates a steady industry expansion, driven by technological advancements, regulatory requirements, and changing consumer behavior. The scope of the PET Release Liner market encompasses various types, applications, and end-users, including pressure-sensitive labeling, pharmaceuticals, and medical devices.