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11 Steps for Successful Plastic Injection Molding

If you are here right now and want to know how plastic injection molding is done and the steps involved in it, then without a doubt, this is the right place for you.

Plastic Injection Moulding Process (Step By Step)

Plastic Injection Moulding

Today we will be talking about the process and how everything is done in it so that if you want to get low-scale plastic moulding or plastic injection molding done for mass production, you know where to begin with.

It’s a simple and effective process that requires a little pre-planning. There are some famous companies like qmolding that can get this process done for you at extremely economical prices without putting you in any hassle. Honestly, if you are looking for such a service provider, then don’t wait and opt for qmolding for the best results.

Now, coming back to plastic injection molding, before you start the design and production part, there are a few steps you need to know about. Starting with.

Determining the moldability

The very first thing is to figure out if the injection molding process is something you need to do in order to produce a particular part.

Finding the right plastic

If injection molding is required, then the next step is to find the right plastic that will be injected. It’s all based on the use and the end product that you want. Here you need to determine the best plastic resin to use.

Determining the shrinkage

When you inject plastic into a mold, it will start to cool immediately, and then it will start shrinking. You need to keep the shrinkage in mind and then insert the plastic in the mold in order to reach the best-expected end result.

Determining the gates

Gates are those areas where the plastic is poured inside the mold. Of course, here you should try to minimize its effect on the end product while maximizing a good injection.

Deciding the quantity

The quantity of the production parts that you want will determine the material that you need. The larger the production is, the higher the quality of the mold is supposed to be.

Identifying the size of the mold

The next step is to identify the size of the mold, and it, of course, depends on the end product that you are expecting. Remember that there should always be room for shrinkage if you want to get the end product just as you want it to be.

Determining the press size

The size of the mold is what tells about the size of the press that is required to hold up the mold during the injection process.

Designing the mold

Then comes the part where you have to design the mold.

Building the mold

Once your design is complete, and once you know the mold that you have to use, you can now build your mold and meet the specifications of your final product accordingly.

Debugging the mold

Once you are done with the initial running of the plastic injection, the next step is to test the prototype that you have created. Here you are supposed to check the measurements, the errors, and some unexpected problems if there were some.

Quality Control

Just like how it’s done in all the other manufacturing processes, you need to get the product to a place where it’s checked for quality control.


These are the simple steps involved in successful plastic injection molding. As you can see, there is no rocket science involved here, and the process is quite easy if it’s done the right way.

Now that you know everything about it, it’s time for you to start looking for a good service provider for plastic injection molding for your products.

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About the author

Mohammad Shoaib

Mohammad Shoaib is a freelance writer who offers blogging, ghostwriting and copy-writing services. He works closely with businesses providing digital marketing solution that increases brand awareness and search engine visibility.