China injection molding technique
Injection molding is the manufacturing process which is mostly used for the plastic items from toys and plastic trinkets to cell phone cases, automotive body parts, containers, water bottles, and more than 70% or products on the world are made in plastics.
Basically, many of the plastic parts which used in daily life are the injection molded parts, and over 60 percent of those plastic parts come from injection mold china companies, injection molding technique becomes the fastest process used to create the mass amount of identical plastic parts. Flexibility in size and shape achievable by use of the injection molding has constantly widened boundaries of plastics design and allowing substantial alternatives of the traditional materials because of the light-weighting and design freedom.
Most of American and Europe companies thought finding injection molding China company to support their business is more fast than the local supplier. The main reason is China injection molding companies works at least six days per week, and all of them are willing to do the overwork.
The technique of injection molding in China
When the plastic parts have been designed by yourself or your China mod supplier, a metal mold is then precision-machined to create the requirement shape accordingly. This process is called making injection mold, and takes many manufacturing steps to finish the mold.
The part made in the mold can be the multiple cavities or the single cavity. After injection mold has to be finished by the injection mold China company, then the next is trial the mold. The process is melt the plastic material in the liquid and then feed though the heater chamber by forcing it through the plunger in the hollow mold. After that, get the mold cold, then open the mold and eject the plastic part out from the mold. At that point, you have the final plastic which we are looking for.
This is basic injection molding process. There are many type of injection molding process, which include the metal injection molding, thin-wall injection molding, silicone-rubber injection molding, and die casting.
The plastic material used
To know what type of the material used for the technique, the specific function of a final product requires to be considered. Nevertheless, thermoplastics is normally the idea material for the injection molding process, mostly because of their properties which are desirable. Thermoplastics are essentially recyclable, easily soften when it is heater and extremely versatile. Elastomers and thermosets can be used also for the injection molding, even though they are not as commonly used,
While the majority of the mold are made from steel, there are other metals which include stainless steel, aluminum and copper alloy that can be used also for definite procedures. For instance, use 1.2738 or p20 steel is the best for the large parts and low volume production, but unsuitable for the high-volume applications because of after one or two million shots the mold could be damaged.
In that case 1.2344, H13 would be the best option, to make injection mold is expensive. Even if you need 100 parts, the mold cost is pretty much the same, to save the injection mold cost, find an injection molding china company to support cold one of the best options. Injection molds and parts from Injection molding china company will normally save your max up 30-40% of cost than your local supplier. So you can imagine what advantages you could have from China molding suppliers.
You may think there is not savings to buy your parts from China. Most of the biggest companies are buying things from China. You can find a suitable and reliable injection molding china company
How injection molding works
The injection molding machine is composts of primary components which include the screw, feed hopper, and the heating barrel. The plastic granules or power from even some resins, for example, the abs material is melted using frictional action of the reciprocating screw that is accompanied by the heater bands. Molten plastic is after that injected through a nozzle and in to the mold cavity, and the mold, which may look easy, but the injection molding processing is very complex.
When in the mold cavity, the material cools and then solidifies to a configuration of parts. Once the part has been hardened, a moveable plate in the injection molding machine upon which the mold has been mounted opens, and the ejection system ejects and parts come out to get the ending plastic part.
The size of injection molding machines could have five tons of clamping force to 6,000 tonnages. The higher tonnage, the large machine, in fact, injection molding machines are classified based on tonnage, or more precisely the clamping force or pressure.