How Is The Injection Molding Machine Working ?

- Jan 05, 2017-

How is the injection molding machine working ?

  A lot of my customer purchasing friends always me: "Jason , I would like to know more knowledges for the plastic injection molding technics.How it works?  It is better for me to understand more for my task ".

Here today I would like to post one article to show how the injection molding machine working .

The process as below :

1) We fill the plastic resin into the injection molding machine , the plastic resin will be heated at the injection molding machine nozzle with temperature sensor and controller. different material normally have different melting temperature . such as for PP resin, the melting temperature always between 150 degree to 200 degree .

2) The injection molding machine will close the injnection mold with clamping force and waiting for the material filling, The clamping force also can be controled by the sensor .

3) The screw rotate with high speed to press the material to the mold and get the have a lot sensor for injection shot, such as injection speed , injection pressure,injection position, injection temperature and mold temperature

4) After the material fill into the mold , we need to stop the material filling and start the holding pressure . This hold pressure will help the part with no short shot and shrinkage marks with stable dimensions.

5) After the hold pressure, the injection molding machine will start to cooling the part which is inside the mold , as we know the melting temperature when we fill the material into the mold , it is very high and we need to cool it in the acceptable level to get the part .

6) After the cooling, the injection molding machine will open the mold and de-moulded the parts by ejector system. Now we can get the expecation part what we want .

7) After the step 6 , the injnection molding machine will come to step 1 for another short production.

Here is a full movie picture for your :

   Asia Billion is a Hong Kong and China plastic injection molding and tool making manufacture.  we have great advantages for the low cost injection tooling and molding , precision injection mold and molding , 2k or over molding project as well as the precision metal cnc machining parts. 

Our main advantages as below :


1) 5% to 30% price lower than  your local supplier or current supplier in China with same design or better quality.

2) Good customer service with quicker response

3) Early Project mechanical researching involved capacity for new production development

4) shorter Lead time  stronger engineering team for mold design , mold simulation and quality assurance( DFM , full mold drawings, Mold flow simulation report can be provided )

5) all the requirements of certifications can be provided

6) Good knowledges for resin, steel and mechanical production design , we can help you optimize your project

7) High educated management team with long time working experience with oversea companies and all can speaking English

8) High precision injection mold and over mold is our big advantages than others ( Min tolerance for production can be +/-0.02mm, mold tolerance and metal cnc machining part tolerance can be 0.005mm)

9) Good experience and understanding for SPI class 101 to 105 medical injection mold making classification

10) Small to middle size manufacturing and only service for high quality customer, we are easier to working with customer and smart enough.

11) we are fasting growing and smart or flexible enough for different demanding or some emergency conditions.

12) Good supply chain experience with Medical device , automotive , electronic or others industry OEM companies.


If you have any RFQ, please feel free to contact us at:

Asia Billion Innovational Technology Ltd  

Mobile for business:  +86-134 8063 8827

Asia Billion Plastic Injection molding plant

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