The Brady's square thermal transfer printer label roll. These items come in a variety of shapes and sizes to accommodate many situations. One of the important components to selecting the right product is the proper label and adhesive material. This continuous thermal transfer printer label roll uses polyester for the label material and ultra-aggressive rubber-based as the adhesive. - Brady square printable white polyester labels are made with a gloss finish and an ultra-aggressive permanent adhesive. Brady B-483 polyester labels are designed for high adhesion to textured metals and low surface energy plastics and adhere well to powder-coated surfaces.