There are a variety of ways to handle plastics such as high molecular weight polymers. Each method has its advantages and disadvantages, is more suitable for a specific application. Next, let's see how they are processed through related interesting animations!
Injection molding machine

 

 

Injection molding is a manufacturing method that makes parts by injecting material into a mold. Main method of processing plastics is injection molding. In this process, plastic is placed into hopper, and then hopper heats plastic into it, which is pushed through a long chamber with a reciprocating screw. After that, it is softened into a fluid state. A nozzle is located at the end of chamber through which fluid plastic is forced to cool, closing mold. When plastic cools and solidifies, semi-finished product exits press.

 

 

Plastic extrusion is a high-volume manufacturing method in which plastic raw material is melted to form a continuous profile. Extrusion process is commonly used to manufacture materials such as films, continuous sheets, tubes, profiles, rods, jacketed filaments, filaments, wires, and cables. Along with injection molding machine, dried plastic is placed into a hopper and fed into a long heating chamber. At the end of chamber, material is pressed out of a small opening, or mold, in the shape of desired final product. After plastic leaves mold, it is placed on a conveyor belt to cool. A blower is sometimes used during this process to help cool it down.
Blow molding machine

 

 

Blow molding is a molding method for manufacturing hollow plastic products. It is a secondary molding technology that uses gas pressure to inflate a rubber-like parison closed in a mold cavity into a hollow product.

 

A relatively special plastic processing method for processing thermoplastic sheets into various products. Sheet is clamped on frame and heated to a softened state, and under action of external force, it is made close to profile of mold to obtain a shape similar to profile. After cooling and shaping, finished product is finished. This process is also used in rubber processing. In recent years, there have been new advances in thermoforming, such as continuous production techniques from extruded sheet to thermoforming.

 

 

Compression molding is the most common method used in thermosets and is generally not used for thermoplastics. During this process, material is extruded into desired shape. Plastic molding powders and other materials are added to mix to create special qualities. When mold is closed and heated, material hardens into its desired shape. Temperature, pressure and length of time used in process depend on desired results.

 

 

Final process of heavy leather finishing. It is a finishing process that uses plasticity of fibers under condition of mixing and heating to flatten surface of fabric or roll out parallel fine diagonal lines to improve luster of fabric. After material is fed, it is heated and melted, then formed into sheets or films, which are then cooled and rolled up. The most commonly used calendering material is polyvinyl chloride.
Extrusion

 

Extrusion molding, blank is extruded from orifice or gap of die under action of three-way uneven compressive stress to reduce cross-sectional area and increase length to become desired product. Processing method is called extrusion. This processing of blank It's called extrusion.

 

 

Vacuum forming (Vacuum Forming), often called blister, is a kind of plastic processing technology, lighting, advertising, decoration and other industries.

 

Rotational molding is also known as rotational molding, rotational casting, etc. Rotational molding process is to first add plastic raw materials into mold, then mold is continuously rotated along two vertical axes and heated, so that plastic raw materials in mold are gradually and uniformly coated, melted and adhered to mold under action of gravity and thermal energy. The entire surface of mold cavity is formed into desired shape, then cooled to shape, demolded, and finally product is obtained.