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China Mold Maker: 5 Types of Plastic Injection Molds

January 08, 2021

In-Depth Review of China Mold Making

China Mold maker is becoming one of the most renowned professionals of our times. The reason it is becoming popular is that it is a cheap technology that manufacturing industries utilize. And plastic molding with an injection technique goes hand in hand.

The current demand for China Mold maker shows the rapidly increasing trend for china plastic molding. This inclination has forced the creators to look for diverse and effective ways to make plastic injection molds. The awareness regarding mold making is forcing the makers to improve the methods of making it.

You May Also Read: Importance of Prototype Tool in Injection Molding

It essential for a China Mold maker to understand the changing trends and come up with new improved techniques for making china plastic. They require a keen eye for assuring quality work. There are some basic fundamentals to properly check the making of the molds.

Mold making is an intense procedure in which the mold makers much follow the actual prototype that has received approval from the customer. The prototype is the exact base on which the actual product develops because, in any business, client satisfaction carries utmost priority. Doing this can actually save time and money thus enhancing the production in its wake.

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Plastic Injection Molding

Injection molding is the best method that plastic mold makers utilize. It saves time and optimizes production which is the ultimate goal. It is crucial for the manufactures to choose the right kind of method to elevate the production. This is also important for choosing the right techniques in saving money and producing high quantities in minimum time spans. There are five different types of Plastic injection molding. They are as following in the queue that will take you to step by step in making the right decision.

5 Types of Plastic Injection Molding

The major 5 types of Plastic Injection Molding are Low and High Cavitation Molds, Family Mold, Hot Runner Molds, Cold Runner Molds, and Unscrewing Molds.

The category and quality are the most important when it comes to plastic products. These 5 types of Plastic Injection Molding produce various types of plastic molds. The quality may vary due to many factors hence a close inspection of the input carries much significance.

The process encases some simple steps that repeat in all types of injection molding. Initially, plastic bits are melted in the plastic injection molding apparatus. Then this molten plastic is fed into the hollows of the mold. These hollow cavities come in different shapes and sizes. This shape of the cavity totally depends on the requirements and specifications of the manufacturer.  It is likely to produce multiple products in a single cycle. This is only possible if the injection molds are in mint condition with 100% functionality. You can learn more about the types of 5 plastic injection molding procedures.

Low and High Cavitation Molds

The best way to classify plastic manufacturing molds is by the number of cavities it has. It is very normal to come across low and high cavity molds. In simple words, low cavity molds have a limited number of cavities that ranges from 1 to a maximum of 4 cavities. These types of molds come in handy often when precision is the ultimate goal, especially for surgical and medical tools. The leading time per production cycle is short for low cavity molds. This is the reason it is not suitable for high volume production. 

On the contrary, high cavity molds feature multiple cavities that encompass in a single mold. The leading time is much slower; still, these kinds of molds are perfect for high-volume production plastic product manufacturing. They can contain 16 and at times more than 16 cavities at a time.  Due to this, the cost can be higher for high cavitation molds because of the high number of cavities, volume of plastic, and intricacy of designs.

Family Mold

Family mold is another way of classifying high cavity molds. To manufacture numerous parts of the very same kind, family molds can house two or more than two cavities. The shape produced is often for a single product, but you can also observe that it can produce the second half of the previous product. It is a great technique to save time which is beneficial for both the manufacturer and the customer.

They lack the importance of using specialized raw materials so it is easy for the client to place an order without settling on any prerequisites. The minimal complexity tooling of family molds shows that the costing would be rather on the lower side which is a plus point for both parties. Manufacturers and clients can benefit from it equally.

Hot Runner Molds

This type of injection plastic molding involves the use of the type of runner that is being utilized by a single component. Runners determine the form and worth of the product. They play the part where they are accountable for transporting the melted plastic into the hollow cavities of the mold.

Their major purpose is to keep the melted plastic in the melted form at all times during the cycle. They are lucrative and useful because they transfer the melted plastic throughout several cavities of the mold. And better yet they call for less wastage with limited defects in the final plastic molding product. Hence it is best for producing plastic products that are low cost. The famous examples include phone casings, pick-guards, caps, and much more.

Cold Runner Molds

Cold runner molds play a similar role that of a hot runner mold. But as the name suggests, heating is missing from this component. The runner belt sin these molds are cold. It is a typical use for a plastic injection molding tool. It has a prior use as a runner belt to carry the plastic before it converts to melted plastic.

Cold runner molds are impractical for high capacity productions. They are less complex than the hot running molds. Cold runner molds are very unfeasible when the production process takes place because it produces a higher amount of wastage. On the other hand, the wastage produced is recyclable, but it eventually deteriorates the quality of the final product.

Unscrewing Molds

Caps, screws, shafts, and many more come into existence by using the same way of production. And the production method most appropriate for such manufacturing is by using unscrewing mold injection production. It is not very ideal for high scale production because the thread that ejects during the procedure can damage its shape. So the best bet is to use the unscrewing molds for this very purpose. These unscrewing molds make use of tightly secured rotator manacles to produce uniform designs that otherwise might seep through the machine gaps.

You May Also Read: Effective Tips for Plastic Corner Molding


As discussed in this article, a China Mold maker can opt to produce plastic molding by using five types of plastic molding techniques. It all depends on the criteria at which the manufacturer wants to produce the plastic. These five types of techniques vary in design and the production of the final product. The number of runners and cavities in the mold decides what kind of production takes place.

It is easy to decide when the production types vary from high to low volume and need of the time. This can help the manufacturer to save money and become cost-efficient by making the right choice in choosing the right type of plastic injection molding technique.

 We, ACE-Mold, have been providing high-quality injection moulding, mould designing, mold manufacturing and numerous other services to our clients for several years now. Therefore, we can assure the quality of not only our services but also our products. 

For More Information, Contact Us Today!

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