PVC self-adhesive and PET self-adhesive are classifications of self-adhesive.

Self-adhesive label material is also called self-adhesive label material. It is a composite material with paper, film or special materials as the fabric, adhesive on the back, and silicon-coated protective paper as the base paper.

Classification of self-adhesive stickers:

1: Surface materials used: wood free paper, art paper (shading/mirror surface), transparent PVC, electrostatic PVC, polyester PET, laser paper, heat-resistant paper, PP, PC, kraft paper, fluorescent paper, thermal paper, copper wire dragon, silver wire dragon, gold-plated paper, silver-plated paper, synthetic paper (CPC/PP/HYL/excellent tough paper/ Pearlescent paper), aluminum foil paper, fragile (anti-counterfeiting) paper, textured paper, cloth label (Tyvik/nylon), pearl dragon, sandwich copper plate, thermal paper.

Two: Film types used: transparent PET, translucent PET, transparent OPP, translucent OPP, transparent PVC, glossy white PVC, matte white PVC, synthetic paper, glossy gold (silver), polyester, matte gold (silver) polyester fat.

Three: Use glue types: general super sticky type, general strong sticky type, refrigerated food strong sticky type, universal re-opening type, fiber re-opening type.

PVC self-adhesive:

PVC has non-flammability, high strength, resistance to climate change and excellent geometric stability, and is very resistant to oxidants, reducing agents and strong acids. Strong resistance. In addition, because of its good flexibility, shrinkage and opacity, it has good processing and labeling performance, strong chemical corrosion resistance, strong and durable, so it is suitable for long-term outdoor use.

However, PVC has poor thermal stability and light resistance. It will begin to decompose and release hydrogen chloride (HCl) gas above 140°C, which is not conducive to environmental protection (alkaline stabilizers and alkaline stabilizers are often added in actual production. HCl inhibits its catalytic cracking reaction). And some toxic auxiliary materials such as plasticizers and anti-aging agents are added during the manufacturing process to enhance its heat resistance, toughness, ductility, etc., so its products generally do not store food and medicine. In addition, PVC label materials have poor degradability and have a negative impact on environmental protection.

PET self-adhesive:

The main raw materials of PET are ethylene glycol (EG) and terephthalic acid (PTA), which are widely used as fibers and can be divided into non-engineering plastic grades and There are two major categories of engineering plastic grades.

PET has excellent properties (heat resistance, chemical resistance, toughness, electrical insulation, safety, etc.) and is cheap, so it is widely used in fibers, films, engineering plastics, polyester Bottles etc. Internationally, the industrialized products of polyester thermoplastics include the following six aspects (those that have become industrialized are commercially available for sale).