How Do Plastics Change from Masterbatch to Molded Products? (Part Two)

7. Foam molding is the process of adding appropriate foaming agents to foam materials such as PVC, PE and PS to make the plastic have microporous structure. Almost all thermosetting and thermoplastic plastics can be made into foam plastics, and foam molding has become an important field in the processing of plastics.
8. The winding molding process is to wind the continuous fiber, cloth tape, presoaked yarn impregnated with resin glue on the core mold according to a certain rule, and then it is solidified and demolded to obtain the product.
9. Laminate molding refers to a molding process that combines multiple layers of the same or different materials as a whole under heating and pressure. It is commonly used for processing plastic, but also rubber.
10. Pouring molding is a method of processing plastics. In the early casting, liquid monomers or prepolymers were injected into the mold under normal pressure, and after polymerization, they were solidified and formed into a product with the same shape as the cavity of the mold. Nylon monomer casting appeared in the 1960s. With the development of molding technology, traditional casting concepts have changed. Polymer solutions and dispersion rigidsol and melts can also be used for casting.
11. Dripping uses the variable state of thermoplastic polymer materials, that is, having viscous fluidity under certain conditions and restoring a solid state at room temperatures. Use appropriate methods and special tools to have ink jet. The viscous flow state is shaped into the designed form according to the requirements, and then solidified and shaped at room temperatures.
12. The compression molding method is mainly used for manufacturing thermosetting plastic products. The molding is heated to melt, and is pressed by the mold; cross-link and solidify the molding through heating, and the product is obtained after demolding.
13. Resin transfer molding is a process in which resin is injected into a closed mold to infiltrate the reinforcing material and solidify. This technology doesn't require prepregs and autoclaves, effectively reducing equipment costs and molding costs. This technology has developed rapidly in recent years, and has been widely used in the aircraft industry, automobile industry, shipbuilding industry and other fields, and RFI, VARTM, SCRIMP, SPRINT and other branches are developed to meet the application needs of different fields.
14. Extrusion is a pressure processing method in which a punch or a terrace die is used to pressurize the blank placed in the concave mold to generate plastic flow, to obtain a part corresponding to the shape of the mold hole or concave and convex mold. In the extruding, the blank generates three-dimensional compressive stress, and even the blank with lower plasticity can be extruded and formed.
15. Thermoforming is a special processing method of plastics, which makes thermoplastic plastic sheets into various products. The sheet is clamped on the frame and heated to a softened state, and it is close to the molding surface of the mold to obtain a shape similar to the molding surface under the action of external force. After cooling and shaping, the product can be obtained.

16. Painting molding is also called manual pasting molding or contact molding. It refers to the manual operation on the mold coated with the release agent, that is, laying the reinforcing material and painting the resin to obtain the required thickness of plastic products. The plastic product is obtained after solidifying and demolding.

17. Laser rapid prototyping (LRP) is a new manufacturing technology that integrates advanced technologies such as CAD, CAM, CNC, laser, precision servo drives and new materials. Compared with traditional manufacturing methods, laser rapid prototyping is highly replicable and interchangeable; the manufacturing process has nothing to do with the geometry of the manufacturing prototype; the processing cycle is short and the cost is low; the general manufacturing cost is reduced by 50%, and the processing cycle is shortened by more than 70%; Technology integration realizes the integration of design and manufacturing.
18. Fused Deposition Molding (FDM), this process is to extrude filamentous materials such as thermoplastics, wax or metal fuses from a heated nozzle, and follow the predetermined trajectory of each layer of the part to have melt deposition at a fixed rate.

19. CNC computer numerical control machine tool is an automatic machine tool equipped with a program control system. The control system can logically process the program with control codes or other symbolic instructions, and decode it to make the machine tool move and process the parts.

20. 3D printing is a kind of rapid prototyping technology. It is a technology that uses powdered metal, plastic or other bonding materials to build objects by printing layer by layer based on digital model files. 3D printing is usually achieved by digital technology material printers. It is often used to make models in mold manufacturing, industrial design and other fields, and then gradually used in the direct manufacturing of some products. There are already parts printed using this technology.