From the surface, the structure of the self-adhesive material is composed of three parts: surface material, adhesive and backing paper. But from the perspective of manufacturing technology and quality assurance, the self-adhesive material is composed of seven parts　　

Surface coating. The purpose is to change the surface characteristics of the surface material. Such as improving the surface tension, changing the color, increasing the protective layer and so on, to make it better accept the ink and easy to print, to prevent dirt, increase the adhesion of the ink and prevent the printed text from falling off. Surface coating is mainly used for non absorbent materials, such as aluminum foil, aluminized paper and various film materials. General paper materials do not need coating, but special fabrics such as thermal paper, heat transfer paper requires surface coating.

1. This machine is suitable for coating oily or water-based pressure sensitive adhesives on release paper, cotton paper and other substrates. After drying, it is compounded with sponge, PE, EVA, cloth and other web or roll materials. It is mainly used for production. Adhesive labels, double-sided tape, foam tape, duct tape, kraft paper tape, masking tape, fiber tape, etc.

2. Mainly used raw materials:

1) Substrate: release paper (silicone paper), cotton paper, film (BOPP, CPP), etc.

2) Glue: oily or water-based pressure sensitive adhesive. Solvent type.

1. Tension control system: The whole machine winding and unwinding is controlled by magnetic powder tension control system.

2. Each set of EPC gas-liquid automatic correcting devices (three sets) is provided in the unwinding frame, the winding frame and the drying tunnel.

3. Oven safety system: When the oven temperature reaches the set temperature, the heating is automatically stopped. When the temperature is lower than the set temperature, the temperature is automatically increased, and the interlock circuit of the exhaust system and the heating system is set to improve the safety of production. reliability.

4, energy-saving oven: the oven uses external electric hair dryer to dry, excellent thermal insulation performance, low energy consumption, uniform heat, the application of intelligent digital display PID thyristor temperature control system, high temperature control accuracy.