What is the process of  rubber injection?

      Rubber injection molding is a manufacturing process used to produce rubber parts with high precision and repeatability. It is aimed to inject molten rubber material into a mold cavity under high pressure, in which it cures and shape foaming. Here’s a breakdown of the process:
200ton rubber injection machine to UAE - YouTube

1. Material Preparation  

 Rubber Compound Selection: Choose appropriate rubber material as per your products requirements. 

e.g., EPDM, Silicone,rubber, HTV,LSR, NBR etc

2. Mold Preparation :Check the mold before installing, ensure there is no dirties and damage.

3. Injection Process 

①　Feeding: For plastics ,the raw material are filled into the barrel,  For rubber, Just put the rubber strip to the entrance manually.

②　Plasticizing: the plasticizing screw inside will transport the material forward,the heating bands wrapping around the barrel , gradually the temperature will raise up to standard  , material will melt in the barrel and ready for injection.

①　Injection: The molten material are injected into mold cavity and its temperature is much lower than that in the barrel,so it will solidifies in less minutes and clamping plate moves backward ,the mold open

4. Cooling & Ejection  

After curing, the mold is cooled (if necessary) to solidify the part.
The mold opens, and ejector pins remove the finished rubber component.
5. Post-Processing (If Needed)

①　Trimming: Sup lux (extra material at seams) is removed.

②　Surface Treatment: Additional coatings or treatments may be applied.

③　Quality Inspection: the last process, check for defects like(dimensions, hardness, visual flaws)

Above are today’s update,next page we will introduce the advantage of rubber injection molding,

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