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1. First, the PET original film is arranged into a single product into the conveying line, and then enters the mold through the discharging device.

2. Because the shape and outer diameter of the product are not uniform, there is a high requirement for the accuracy of the sleeve labeling machine. At present, the double positioning and guiding system that has appeared on the world can perfectly solve such problems and make the labeling pass rate. It reached 99, 9%.

3. Adopt synchronous feeding device. The material is more stable. Automatic alarm and linkage control solve the problem that the machine continues to operate in the event of a fault.

4. Electrothermal shrinkage due to the specificity of such products. However, electrothermal shrinkage is generally more difficult to control than steam shrinkage. There will be wrinkles and uneven vortex heating. In addition, the outer diameter of the product is not uniform, and the size on the selection label is much larger than the conventional one. This brings great difficulty to shrinking. However, this problem can be solved by using a rotary step-by-step shrinkage method.