According to the different pressurization methods of vacuum forming, mainstream vacuum forming equipment is mainly divided into the following three categories:
(1) Vacuum negative pressure suction molding machine mainly uses negative pressure suction to make plastic sheets adhere to the mold;
(2) Positive pressure suction molding machine increases the air pressure on the front of the plastic sheet through an air compressor, making the softened plastic sheet adhere to the mold;
(3) Positive and negative pressure suction molding machine is a method of molding softened plastic sheets by creating a strong pressure difference on both sides of the plastic sheet through pressurization and vacuum pumping. These three devices each have their own advantages and disadvantages, and the machine needs to be selected based on the characteristics of the product.
At the same time, the vacuum forming machine is also divided into two categories based on the forming step method:
(1) A one-step molding machine integrates heating, vacuum forming, and die-cutting of plastic sheets, with high production efficiency, suitable for vacuum molded products with low quality requirements;
(2) A two-step molding machine is a machine that separates the heating, vacuum forming process, and die-cutting of plastic sheets, suitable for vacuum forming products with high quality requirements
