Glossy white polyimide labels are 7.8 mil topcoated polyimide film. They feature an aggressive permanent acrylic adhesive. The liner is a 55# glassine release liner. Polyimide material is designed for ultra solvent and heat resistance. These labels are UL recognized when used with a Datamax SDR ribbon. They are resistant to oil, dirt, blood, and most chemicals. 0.449″ x 0.157″ labels. Custom item – please call or email for a quote.