Operating procedures for vacuum PVC blister film pressing

In the home furniture industry, especially in the production and decoration of cabinet door panels, the technology of PVC blister film pressing is very important. Through the perfect combination of various complex technological processes, the formed PVC blister film makes the cabinet door panels have an eye-catching appearance and a very textured surface, which is very popular with consumers. Next, the editor will introduce the operating procedures of PVC vacuum blister film pressing. 1. Requirements for the use of film glue (1) The film glue is a two-component glue, and the activation temperature is about 60 °C. The storage environment temperature must be between 5°C and 30°C, and flocculation will be caused below 5°C. (2) The plastic bucket should not be placed directly on the ground, but should be placed on a wooden bracket, especially in winter. (3) The validity period of the film lamination is 6 months from the date of delivery when the original packaging is not removed. (4) The preparation ratio of film lamination, main agent: curing agent u003d 20:1 (5) When mixing the main agent and the curing agent, the main agent should be kept in a stirring state, and the curing agent should be slowly added and stirred for at least 3 minutes. . (6) The amount of glue prepared each time should be used up within 4 hours. After mixing the glue, the glue bucket should be tightly covered. 2. Glue spraying process requirements: (1) The glue spraying sequence is: end face → front line type → front + line type → end face, the plane part can be sprayed once; the end face and plane line type need to be sprayed twice. (2) The active time after mixing the main agent and the curing agent is 4-6 hours, and the workpiece that has been sprayed should be processed within 4 hours to obtain the best gluing effect. Otherwise, the activation temperature needs to be increased due to the cross-linking reaction of the glue. Although the gluing effect is good in appearance, the temperature resistance has been significantly reduced. If the glue is sprayed twice, glue marks will appear on the surface of the PVC. (3) The surface is whitish and dry after spraying, and it is not sticky to the hand or has obvious luster after drying. The drying time is 30-50 minutes (depending on the temperature, humidity and spray quality of the environment). (4) The commonly used fan is 1.5-2.0 meters away from the workpiece and aimed at the workpiece to blow the moist air away to avoid PVC bubbling due to the high humidity of the workpiece. (5) In winter, in order to increase the temperature of the workpiece, a small heat preservation room can be used to heat the workpiece to a temperature of 20-25 °C (the temperature is prohibited to exceed 35 °C, otherwise the workpiece will be deformed). Glue spraying should be carried out on a water curtain machine in an environment of not lower than 16°C. (6) The glue spray operator should wear a mask to protect the operator's health. The above is the operation procedure of vacuum PVC blister film pressure analyzed and introduced by the editor. I hope it can be helpful to everyone.