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Injection Molding Service in PCBWay

by: Jan 26,2021 7743 Views 0 Comments Posted in Injection Molding

Injection Molding PP ABS PE PS

The Basics Of Injection Molding Service

Injection molding is one of the most often-used manufacturing processes for creating plastic parts. Thanks to its high-precision, repeatability, and cost efficiency at scale, injection molding is used to make a variety of products and parts from the smallest medical insert up to large automotive & aerospace and defense parts. The injection molding process requires an injection molding machine, raw plastic material, and a machined mold. The raw plastic material is first melted in the injection unit and is then injected into the mold — most often machined from steel or aluminum — where it cools and solidifies into the final plastic part. The key steps in the injection molding process are clamping, injection, cooling, and ejection. The most commonly used materials in injection molding are Polypropylene (PP), ABS, Polyethylene (PE), Polystyrene (PS) etc.

How Injection Molding Works

The sequence of events during the injection mould of a plastic part is called the injection molding cycle. The key steps in the injection molding cycle are:

Clamping: The two sides of the mold are closed and clamped shut.

Injection: The material is fed into the machine and pushed towards the mold. While this is happening, the material is melted by heat and pressure. The plastic is then injected into the mold — this is called the “shot.”

Cooling: The plastic in the mold cools and solidifies into the shape of the part.

Ejection: After the part cools, it is ejected from the mold.

Injection Molding Processes

Plastic Injection Molding is a manufacturing process where resin in a barrel is heated to a molten state, then shot in to a mold to form a final production-grade thermoplastic part.

Liquid silicone Rubber Molding is a thermoset process that mixes a two-component compound together, which is then heat cured in the mold with a platinum catalyst to produce a final part.

Over molding and insert molding are two-part injection molding processes where one material is over laid onto a second substrate part or metal insert to create a single component.

Pros& Cons 

Large material selection, including the hard&flexible plastics, Rubber-Like Varieties, Mixed plastic etc. ; Built on Demand with minimum waste; Scalability; stable&awesome durability; 

With rapid molding, molds ready in 15 days; Terrific surface quality; Eco-Friendly;

However, Interlocking and hollowed structure are limited.


Almost every plastic part around you was manufactured using injection molding: from car parts, electronic enclosures, kitchen appliances to the construction parts, medicine industry etc.

PCBWay provide service including PCB Prototype & Batch Production, PCB Assembly (SMT), PCB Design, Electronics Modules Selling, 3D Printing, CNC Machining etc. We are committed to meeting the needs of global makers from different industries in terms of quality, delivery, cost-effectiveness and any other demanding requests in electronics.

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