Title: injection molding manufacturers InAll Places, Arizona
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Our factory TS-mold is a professional mold maker in China. We make mold and offering custom injection moulding parts services for the manufacture of plastic products used in a broad range of industries, including aerospace, automotive, medical, telecommunication, lighting, and other industries.
Shenzhen Tec-shine Technology Co., Lted is a professional mold manufactory in China. Our mold room has 80 workers. We specially make plastic injection mold and offering custom injection moulding parts services for the manufacture of plastic products used in a broad range of industries, including aerospace, automotive, medical, telecommunication, lighting, and other industries.
How plastic injection moldingworks
Injection molding produces parts by forcing molten plastic into a mold where it cools and hardens. Granular plastic is fed by gravity from a hopper into a heated barrel. As the granules are moved forward by a screw-type plunger, the plastic is forced into a heating chamber, where it is melted. As the plunger advances further, the melted plastic is forced through a nozzle into the mold cavity. The mold remains relatively cold so the plastic solidifies almost as soon as the mold is filled. Custom steel tooling is required and adds to the initial cost but is quickly amortized.
Injection molding provides low cost at moderate to large quantities. This method of making plastic parts is an extremely versatile process for producing a wide range of parts with an excellent finish. Almost any 2D or 3D shape can be achieved. However draft is required in most cases as the shape must allow ejection from the mold. Side holes and even threaded holes are possible though they complicate the tooling.
Types of injection parts
Examples of parts made by molding include: automotive, home appliances, medical device etc
The followingmaterialsare some of the ones commonly molded:Nylon,Acetal,Polycarbonate,Polystyrene,Acrylic,PTFE,ABS,PVC.
Cost reduction options include:
Minimizing size of part
Minimizing material volume
Minimizing side holes and recesses
Arranging multiple pieces in one mold by connecting them with small bars ~0.1", however the sub-components must not have widely varying volumes
Minimizing side features and threaded holes
Using living hinges
The following terms are commonly used for this manufacturing process:
Ejection pinsare rods that push the part out of the mold.
Thegateis the location where plastic is injected.
Theparting lineis the location where the two mold halves meet - a thin line will appear at this location.
Aliving hingeis a thin connection provided between two sections of a molded part so that it can be used as a hinge, e.g. a box, with a lid, molded as one piece.
Insert moldingis where a rigid part is inserted into the cavity prior to injection - a screw driver with a plastic handle is an example of insert molding.
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