Temperature: During heating and drying, BOPP film can be dried at a temperature of 60-70 ℃, while in natural drying, a fan can be used to accelerate the air circulation on the surface of the printing material to improve the drying speed. Tension: Machines generally have four tension controls, namely unwinding tension, feed tension, traction tension, and winding tension. Mr. Zhang, the more stable the tension, the more stable the production and operation, and the relatively more guaranteed the quality. However, the tension in each area during the production process is mainly based on the personal experience of the operator in the production process; For materials with poor straightness and flatness, tension can be appropriately increased.
Coating parameters:
Drying temperature: the higher the drying temperature is, the faster the water molecules in the lotion pressure sensitive adhesive evaporate. Many pressure sensitive adhesives can undergo cross-linking reaction at the same time, causing changes in the viscosity of the pressure sensitive adhesive. But the higher the temperature, the greater the impact; When the machine is stopped for coil replacement, the thin film inside the oven is prone to shrinkage and deformation due to prolonged residence time at high temperatures; For equipment that performs coating and cutting simultaneously, the actual drying temperature can be set at 60-90 ℃.
Production speed: The coating production speed is directly related to the coating thickness, oven length, and drying temperature. Increasing the speed can improve the drying temperature inside the oven; Under the condition of ensuring product quality, various speeds can be appropriately increased.
Knife alignment: The blade spacing on the blade shaft can be adjusted according to production process requirements, and the blade spacing of the multi blade pipe cutting machine can be adjusted to match the product it cuts with the blade spacing.
