PVC film lamination technology is very important in the home industry, especially in the production of door panels and cabinets. The medium and high density substrates are processed into various linear shapes and then blistered with various matte high-gloss, monochrome, wood grain, and skin-feel PVC films, making the products colorful and dazzling, creating a great choice for consumers. However, products manufactured using this technology. The pros and cons of its quality vary widely. The reasons for these differences are not only the factors of the base material and the PVC blister film of the finishing material, but also the control of the process parameters during the processing. The working principle of the positive and negative pressure vacuum forming machine uses the plasticity of the PVC film to heat and pressurize the PVC film to coat the surface of the workpiece through the adjustment and control of the film pressure time, the temperature in the equipment cavity and the air pressure.
work process:
(1) The workpiece is placed on the workbench;
(2) The workbench enters directly below the heating plate;
(3) The heating plate and the worktable are closed;
(4) The air between the heating plate and the silica gel membrane is drawn out, and the silica gel membrane is adsorbed to the heating plate and heated;
(5) After the set time is reached, compressed air is injected between the heating plate and the silicone film, the silicone film is in close contact with the PVC plastic film, the workpiece and the PVC plastic film are heated, and the PVC plastic film is softened, and the edge of the board is The temperature reaches the activation temperature of the glue;
(6) The air between the worktable and the PVC blister film is quickly drawn out to form a vacuum, and then compressed air is injected between the PVC blister film and the heating plate, and the PVC film is wrapped under the action of the set pressure and temperature. on the plate.