Self-adhesive labels come in two main types: paper and synthetic materials. Paper labels are inexpensive and easy to print, suitable for short-term use or general product labeling, but they have poor water and abrasion resistance. Synthetic materials, such as polyester (PET), polypropylene (PP), and polyethylene (PE), offer better water resistance, tear resistance, and chemical corrosion resistance, making them suitable for long-term use or special environments.
The adhesive layer is a crucial component of self-adhesive labels, typically using pressure-sensitive adhesives, hot melt adhesives, or solvent-based adhesives. Pressure-sensitive adhesives are easy to use, requiring only a light application for fixation, and are widely used for everyday labels. Hot melt adhesives are suitable for high-temperature environments. Permanent or removable adhesives can be selected based on usage requirements to meet different adhesion strengths and removal needs.
The backing paper layer also comes in various materials, usually silicone-coated paper or film. The backing paper not only protects the adhesive layer, preventing sticking during storage and handling, but also facilitates peeling off for use.
