What You Need To Know About Plastic Injection Molding Process From Shenzhen Plastic Injection Molding Company

JasonMould Industrial Company Limited is a professional china plastic injection molding company for 3D Printing Rapid Prototyping Service,precision CNC milling service and custom CNC machining services,custom plastic injection molding or moulding company with mould and dies development and manufacturing.

Today we will discuss what you need to know about plastic injection molding process from shenzhen plastic injection molding company.

Plastic injection molding is an extremely versatile method of producing products. It is one of the preferred methods for manufacturing parts because it has multiple advantages over other methods of parts molding. This manufacturing method is typically the preferred option for casting individual, thin-walled plastic parts.

Almost any plastic part or component can be done efficiently and accurately with injection molding – from parts for kitchen utensils, electronics, automobiles, medical devices and other items too numerous to count.

Simple parts are easily made. But, complex parts can be quickly made using this method, too, because the high pressures of injection molding, force material into every nook and cranny of the tool (mold) This can’t be done efficiently with other casting methods. Because injection molding is in fact high pressure casting, that is, adding casting materials under pressure, it is possible to cast a wider range of details into the design of the part over other casting methods

Another major advantage over other types of casting methods is its low-cost of operation during production. In addition, there is typically very little post production work required because the parts usually have a very finished look upon ejection.

The manufacturing process of injection molding itself is fairly simple. Small plastic pellets are fed into a hopper. The pellets are then crushed and heated into a thick plastic slag. The hot melted slag is fed into a piston which injects the liquid under very high pressure into a metal die. The die is the negative shape of the finished part. As this space is filled, the plastic is cooled and the finished part is ejected with the process repeating thousands of times a day.

Of course with all manufacturing benefits, there are also limitations to injection molding. The main disadvantage to injection molding is the cost of the machinery The cost could be anywhere from $7,500 to $75,000 and the size of the machine could fit in a 400 square foot garage. Newer machines range in cost from $75,00 to $400,000. There are part size limitations to consider as well. As an example, injection molding equipment can only take on jobs that fit within set parameters if the product is to be one complete piece. Similarly, different designs and materials could limit how thin the product wall will be.

Parts with large undercuts cannot be cast using this method either. The initial cost to create tooling (molds) is very expensive.That is because the tools must be precision machined out of aluminum or steel to hold up to the heat and to long production runs. So, though the production cost is low, in order to amortize the tooling cost, parts production must be high. Thus, injection molding for small productions is often cost prohibitive and the option is eliminated for more cost-effective methods.

However, for prototype work and for short product runs, a cost-effective injection molding process can be used, whereby a two-part or multi-part block mold is created out of silicone rubber and a polyurethane casting resin is then injected under pressure into the mold with a large plastic hypodermic needle. The resulting casting can be extremely thin-walled and the method can be used as proof of concept before expensive tools are ordered.

About JasonMould Industrial Company Limited

Jasonmould is a manufacturer of plastic molds- injection mold, die casting moulds, plastic blow molding, rotational molding, medical plastic injection molding, two shot plastic injection molding, insert molding, overmolding, metal injection molding, micro injection molding, powder injection molding, ceramic injection molding, liquid injection molding, husky injection molding, household mold, casting mold, die mold tool, custom molds, china moulds, rapid prototyping tooling, plastic prototyping tooling, punch press tooling, die and tooling for mobile/ cell phone parts, automotive parts, vacuum cleaners, rechargeable tools, telephones, copiers, computers, multimedia speakers, and many other electronic products and household appliances. And also a plastic product manufacturer- plastic parts, plastic water tank, plastic balls, plastic containers, plastic buckle, plastic anchor, plastic hanger, plastic spoon, plastic pipe fitting, plastic tumble, plastic tableware, plastic cups, plastic bottles, plastic tray, plastic cosmetic container, plastic case, plastic food container, plastic chairs, plastic caps, plastic cap closure, plastic tubes, plastic water pipes, plastic knobs, plastic tubing, plastic utility boxes, plastic racks and so on.


Person: James Yuan
Company: JasonMould Industrial Company Limited
Add:  LongGang Village,LongXi Town,BoLuo County,HuiZhou City,GuangDong Province, China
Tel: 86-752-6682869
Email: [email protected]


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