What is a vacuum machine？
Wooden Door Positive and Negative Pressure Vacuum Machine is a kind of equipment used to make the surface decoration of wooden door, which uses vacuum suction technology to attach the heat-softened plastic film to the surface of the wooden door by suction to form a flat and durable decorative layer. The following is the working principle of the positive and negative pressure suction molding machine for wooden doors:
Wooden door preparation: first of all, you need to prepare the wooden door to be processed. The surface of the wooden door should be flat, clean and undergo the necessary pre-treatment, such as sanding, cleaning, polishing, etc., to ensure that the plastic film can be firmly attached to the wooden door.
Preparation of plastic film: Choose a suitable plastic film material, usually thermoplastic plastic film such as PVC or PET. According to the size of the wooden door, cut the plastic film into a size comparable to the surface of the wooden door, and make sure that the edges of the film are flat.
Vacuum molding: Place the cut plastic film on the surface of the wooden door, and then bring the wooden door close to the working table of the vacuum molding machine. The table of a positive pressure vacuum machine is usually equipped with a heating element, which heats the plastic film to soften it. The table then begins to rise, lifting the door and the plastic film together to the upper part of the machine.
Positive pressure: When the door and the plastic film are lifted to the upper part of the machine, the blister machine applies a positive pressure by means of a pressurized cylinder or a hydraulic system, so that the plastic film is completely adhered to the surface of the wooden door. At the same time, the vacuum system inside the blister machine will be activated to create a negative pressure environment by extracting the air between the wooden door and the plastic film. In this way, the plastic film will be firmly adsorbed on the surface of the wooden door with good flatness and adhesion.
Cooling and curing: After the positive pressure suction molding process is completed, the suction molding machine will stop applying positive pressure and stop vacuum extraction. The door and the plastic film will cool down, allowing the plastic film to return to its hardened state. During the cooling and curing process, the plastic film will be firmly bonded to the surface of the wooden door, forming a flat, durable decorative layer.
To summarize, the Wooden Door Positive and Negative Pressure Blister Machine utilizes heated and softened plastic film to firmly adhere to the surface of the wooden door through positive and negative pressure to form a flat, durable decorative layer. This technique provides a rich decorative effect and protects the surface of wooden doors from wear and tear, pollution and corrosion.
