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APG is a cutting-edge supplier of cosmetic injection molded bottles offering a wide variety of materials, styles, and designs that can be customized to fit your individual product. Injection molding is a production method used to mass-produce plastic parts and products in large volumes. It involves injecting hot, liquid thermoplastic into a mold cavity under high pressure; once there, it cools down and solidifies to take the shape of its mold cavity.
- Injection molding typically entails several steps, starting with mold preparation: an exact replica of your desired final product is designed and produced, usually out of metal with two halves comprising its core and cavity.
- Material Melting: Solid thermoplastic pellets or granules are heated until they transform into liquid plastic using an injection molding machine equipped with both a hopper and heating element to melt them into plastic pellets or granules.
- Injection: Molten plastic is injected into the mold cavity under high pressure by an injection unit of the machine through a nozzle and into its slot.
- Cooling and Solidification: Once in the mold, the plastic quickly cools and solidifies into its final form, taking on its shape as quickly as possible. Cooling may be expedited further through channels within the mold by using coolants for faster cooling times.
- Ejection: Once the plastic has solidified, the mold is opened, and the part ejected from it with the use of ejector pins or plates. Post-Processing: Following removal from its mold, additional processes may include trimming extra material from its edges or trimming away flash (excess plastic) before applying surface finishes or surface treatment treatments.
Injection molding offers many advantages, including its ability to produce complex shapes efficiently, its high production efficiency, repeatability, and the use of an array of materials. As such, injection molding has found widespread use across various industries, such as automotive, electronics, consumer goods, and medical devices.