Several Basics of Liquid Injection Molding
Liquid injection molding is commonly known as the technique for producing a wide range of product from different materials. Two of the most commonly used materials are plastic and liquid silicone. Both of them have good flexibility which is beneficial for the ease of the production. To industrial setting, this process is very beneficial since it allows them to create a lot of identical parts in a short time.
The plastic which is used for this process is firstly melted before it is molded. The melted plastic can be easily formed into the desired shape. On the other hand, if the silicone is used, it will be cured through chemical process by combining the base of the rubber with the catalyst. This process can be done outside the mold before or during the injecting process.
This silicone or plastic is injected to the closed and locked mold by using the plunger syringes. In this mold, the plastic will be cooled. On the other hand, the silicone will be cured when the process of chemical runs the course. In addition, if the silicone is not previously catalyzed, it will be added using the rubber base as well as the catalyst. Simply inject the catalyst and rubber base to the mold using two separate plungers. If all the parts have been cooled and cured, they will be ejected out of the mold.
To perform the process of liquid injection molding, you will need special machinery. That machinery used is very complex with some different standard parts including supply drum which is to handle the raw materials such as silicone, plastic, and pigment till they are ready to be employed. Another part is metering units which are to pump the some different liquid components into the mixer in the premeasured proportions so that all the raw materials can blend into one. Another part is injector which is to force the casting material into the mold by using pressurized force.
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