Blister forming

Blister forming

According to the principle that the bubble bubble forming is the PVC film (hard piece) heated through the mold and the use of compressed air or vacuum forming into the required shape and size of the bubble bubble, so when the forming bubble bubble problems need to be solved from the following aspects:

(1) PVC film (hard sheet) whether qualified products;

(2) whether the temperature of the heating device is too high or too low;

(3) whether the surface of the heating device is adhering to P, V and C;

(4) whether the forming mold is qualified, whether the forming hole is smooth and whether the pores are unobstructed;

(5) Whether the cooling system of the molding mold works normally and effectively;

(6) the vacuum degree and exhaust rate of the roller negative pressure forming can reach the normal value, and the pipeline has no abnormal loss;

(7) whether the compressed air formed by plate positive pressure is clean and dry, whether the pressure and flow can reach the normal value, and whether the pipeline has abnormal loss;

(8) Whether the flat plate positive pressure molding mold is parallel to clamp P, V and C belts, and whether there is air leakage phenomenon.