The main reasons for common quality problems of pvc blister film

PVC blister film sometimes has some problems, so why do these problems occur? What are the reasons for these problems? Today, the editor will explain the main reasons for common quality problems: 1. Wrinkles (1) The spacing of narrow and long workpieces is too small; (2) The edges and corners around the upper surface of the backing plate are not chamfered; (3) The horizontal and vertical dimensions of the workpiece The spacing is not in a straight line, which increases the resistance of air flow; (4) The set temperature is too high; Guangzhou Longsu Plastic Co., Ltd. specializes in the production of various types of PVC vacuum blister film, cabinet and wardrobe film. 2. Pull white (1) The set temperature is too high; (2) The time to reach the set pressure is too long; (3) The line type is not suitable. 3 The edge is not firmly adhered: (1) The quality of the glue is not good; (2) The activation temperature of the glue is too high; (3) The temperature of the equipment cannot reach the activation temperature required by the edge of the workpiece; (4) The workpiece backing plate is not suitable; (5) The performance of PVC adhesive is not good or there is no adhesive; (6) The adhesive has expired or the storage does not meet the requirements; (7) The glue is leaked or the glue is sprayed improperly. When a quality problem occurs, the process or parameters should be adjusted item by item for the above reasons and recorded. Do not adjust multiple process parameters or processes at the same time, otherwise the real cause of the quality problem will be difficult to identify, and it is also difficult to formulate and adjust the production environment. Process standards provide an objective basis.