1. Forming
The key link of plastic processing. Various forms of plastic products or parts are required. Up to 30 molding methods, which mainly depend on the type of plastic, the choice of form and the shape and size of the product. The commonly used plastic processing methods are thermoplastic extrusion, injection molding, calendering, blow molding and thermoforming. The commonly used thermosetting plastic processing methods are also transfer molding, injection molding, lamination molding and thermoforming. In addition, there are casting methods with liquid monomers or polymers as raw materials. Extrusion and injection molding are the most frequently used and the most basic methods of forming.
0010010 nbsp;
2. Machining
Plastic is processed by using metal and wood. Due to the different properties of plastic and metal and wood, it can be used with poor thermal conductivity, low coefficient of thermal expansion, low modulus of elasticity, too much pressure when clamp or tool, which is easy to cause deformation, cutting heat is easy to melt, and easy to adhere to the tool. Therefore, plastic machining, cutting tools and corresponding cutting speed must adapt to the characteristics of plastic, and other common processing methods are sawing, cutting, stamping, turning, planing, drilling, grinding, polishing, thread processing, etc. In addition, plastic can also be cut, stamped and welded by laser.
0010010 nbsp;
3. Jointing
There are welding and adhesive methods for plastic processing. Welding is to use hot air to weld electrodes, hot very hot melt welding, high frequency welding, friction welding, induction welding, ultrasonic welding, and other welding methods can be used for adhesives, which are divided into solvent, resin solution and hot melt adhesive.
0010010 nbsp;
4. Assembly
Gluing, welding and mechanical connection methods to make plastic parts assembled into a complete product operation.
