Other Injection Molding Processes

There are other forms of injection molding that differ from the described method.
Wrap forming
Wrap molding is an injection molding process that allows the use of two different materials to manufacture parts. The first material is molded and, before cooling, an encapsulated molding material is introduced to create a strong bond between the substrate and the encapsulated molding material. This technology is used to create multi material objects with improved aesthetics and functionality, while eliminating the need for secondary operations.
Insert molding
Insert molding is similar to wrapping molding. In this injection molding technology, the preformed object is inserted into the mold before pouring the molten material. The key is to insert the preform material into the molded object. One application of insert molding is to insert metal screw holes into plastic components.
Metal injection molding
In this method, fine powdered metal is mixed with wax, polypropylene binder, or other polymers to form a raw material mixture. Then inject it into the mold and cool it. Once it solidifies, use methods such as catalytic processes and solvent use to remove some of the obstruction.
die-casting
Die casting process, also known as high-pressure die casting, is the process of pressing molten metal into the mold cavity under high pressure. The process is as follows:
The first step is the preparation of the mold, which requires lubrication of the mold cavity to facilitate easy removal of the casting and temperature control.
Afterwards, close the casting and inject molten metal at a relative high pressure between 1500psi and 25400psi.
Die cast products are made of non-ferrous metals such as copper, zinc, aluminum, and lead.
Thin wall injection
This injection molding process is used to manufacture plastic components with very thin walls, such as food packaging, equipment components, and laboratory instruments. The dimensions of these parts are greater than their thickness. This process of creating thin walls is more difficult than other processes.
Micro injection molding
As the name suggests, "micro injection molding" is a molding process used to produce small plastic components weighing approximately 1 to 0.1 grams. This helps to manufacture micro components of various complex geometric shapes with maximum accuracy and precision.
Gas assisted injection molding
When using injection molding to produce thick plastic parts, there is a risk of deformation of the parts caused by molten plastic during the cooling process. This is prevented in gas assisted injection. When molten plastic solidifies, gas enters the mold through gas channels, creating a smooth surface.