Plastic Injection Molding

Plastic Injection Molding Services For Plastic Parts.

Ming Xiao Mfg engaged in custom plastic molded parts by plastic injection molding more than 15 years, our factory is from Ningbo China, we can custom all kinds of plastic molded  parts,steel pins inserted plastic parts.

We have 20T-530T plastic injection molding machines, each with a production capacity ranging from 1 gram to 2000 grams. Materials used are polypropylene (PP), polyvinyl chloride (PVC), polyethylene polyethylene (PE), LDPE, HDPE, nylon (PA), nylon 66 + 30% GF, POM, PC, ABS, SBS, TPR , TPE.

In order to facilitate the ejection of the part, a mold release agent can be sprayed onto the surfaces of the mold cavity prior to injection of the material. The time that is required to open the mold and eject the part can be estimated from the dry cycle time of the machine and should include time for the part to fall free of the mold. Once the part is ejected, the mold can be clamped shut for the next shot to be injected.

After the plastic injection molding cycle, some post processing is typically required. During cooling, the material in the channels of the mold will solidify attached to the part. This excess material, along with any flash that has occurred, must be trimmed from the part, typically by using cutters.

For some types of material, such as thermoplastics, the scrap material that results from this trimming can be recycled by being placed into a plastic grinder, also called regrind machines or granulators, which regrinds the scrap material into pellets. Due to some degradation of the material properties, the regrind must be mixed with raw material in the proper regrind ratio to be reused in the injection molding process. Injection molding is the most commonly used manufacturing process for the fabrication of plastic parts.

A wide variety of products are manufactured using injection molding, which vary greatly in their size, complexity, and application. The injection molding process requires the use of an injection molding machine, raw plastic material, and a mold. The plastic is melted in the injection molding machine and then injected into the mold, where it cools and solidifies into the final part. The steps in this process are described in greater detail in the next section.

Plastic injection molding is used to produce thin-walled plastic parts for a wide variety of applications, one of the most common being plastic housings.

Plastic housing is a thin-walled enclosure, often requiring many ribs and bosses on the interior. These housings are used in a variety of products including household appliances, consumer electronics, power tools, and as automotive dashboards.

Other common thin-walled products include different types of open containers, such as buckets. Injection molding is also used to produce several everyday items such as toothbrushes or small plastic toys. Many medical devices, including valves and syringes, are manufactured using injection molding as well.

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