1. Top coat - gives the label color and finish, receives an imprint and increases resistance to weathering, chemicals and heat.

2. Substrate - gives the label shape and provides mechanical properties, such as tensile strength and flexibility, and physical properties, such as chemical and temperature resistance.

3. Adhesive  

Acrylic: Excellent adhesion characteristics around general application. Also ideal for materials with high surface energy and rough surfaces.

Rubber: Stronger than acrylic for use on low surface energy plastics. This material is sensitive to degradation from elevated temperatures and UV light.

4. Liner - is a very thin carrier that protects the adhesive and allows for removability of the label