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Plastic Injection Molding: The Step-by-Step Process

Plastic Injection Molding: The Step-by-Step Process

It is the most common process in the in the manufacturing industry for fabricating component parts. Many products regardless of their size, color, type, and complexity are produced by plastic injection molding. These products have many applications, from computer parts to automotive sections and home items. However, for many of us who are not in the manufacturing industry, one question remains, how does plastic injection molding works?

The plastic injection molding process like what a manufacturing company like Wintech offers is very short and is usually takes about 2-120 seconds. To illustrate the cycle, it is divided into four main stages.

Stage One: Clamping

Before the injection of the plastic material into the mold, the first step is clamping. Here the two halves that comprise the mold are clamped together by using a carefully estimated force to guarantee that the mold can bear the pressure during injection. The time needed for clamping and closing the molds are dependent on the machine used. If the machine is large, it needs more time.

Stage Two: Injection

At this stage, the plastic materials are in pellet form and are added to the injection molding machine before moving into the injection unit. When it is in the injection unit, heat is applied while pressure is employed to the melted plastic. In a short amount of time, the melted plastic is injected into the mold to fill all the cavities. To avoid defects, it needs a lot of care.

Stage Three: Cooling

When the melted plastic is inside the mold, it needs to achieve the exact cooling temperature to result to the expected shape. There might be some shrinkage to occur in the mold. However, this shrinkage might be minimal because it is already included in the calculation for shrinkage. The cooling time of the molten plastic depends on the thermodynamic properties of the plastics and the thickness of the wall.

Stage Four: Ejection

When the molten plastic has cooled down to the desired temperature, it is ejected to release the component being manufactured. A little force needs to be applied to free the components. This is because shrinkage causes the component to hold tightly into the mold. After this component is release, this means that the cycle is completed and the process will repeat to make new products.

Not all parts all parts that are ejected from the molding cycle is in perfect condition. In some, additional steps might be added. If the materials solidify and remain attached in the mold, it might need some trimming. This is finished by using special cutters. There is no material wasted because the trimming will be reutilized back into plastic injection mold process.

The use of plastic injection molding in making the majority of the items in the industries and at home has changed the manufacturing process. Whether you need to create a new product or needs to redefine the current items available in the market, the secret to your success is the maker that you pick. Make sure that this company has experience in the plastic injection molding-like Wintech. They are committed to moving with their clients to make better results.

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Using plastic injection molding in making the majority of the items in the industries and at home has changed the manufacturing process. In choosing a manufacturer, it should have the experience in the process like Wintech.

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