How to calculate the cost of a plastic injection molding part

The most basic costs of a plastic injection molding part mainly include: Raw material cost, mold sharing cost, equipment depreciation & sharing cost, processing (water & electricity) cost, labor cost, site rental and other overhead costs; Now we are going to analyze the cost structure of a plastic part with a specific example: Assumptions: Product: …

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Mold Inserts design principal in plastic injection mold

In recent years, as the mold industry of China continues to grow and upgrade, the level of mold design has been witnessing constant improvement. In the design of plastic injection molds for digital cameras, cell phones, home appliances, computer peripherals and laptops, the application of insert is gaining greater and greater importance. In the following …

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Two color molding and overmolding

I. Advantages of Two-Color Molding: Two-color molding may also be referred to as 2-shot molding, bi-injection molding, co-injection molding, or multi-shot injection molding, which produces a part with two different colors and/or materials in a single operation. A two-color mold is able to combine two resins with different characteristics and colors into a single two-color …

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Silver Streaks – Defect Analysis & Troubleshooting

What are silver streaks? Silver marks / silver streaks are splatter marks on product surface which are caused by the volatilization of air and moisture contained in the plastic material, or the decomposition and burning of mixed dissimilar plastics. Usually, they radiate outward in a fan-shaped manner from the gate location. Many plastic materials absorb …

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Wall Thickness Design of plastic injection molded products

The wall thickness of a plastic injection molded product greatly influences its quality. If the wall thickness is too small, it will be difficult to meet the requirements for strength and rigidity, and fill the cavity for large and complex products; if the thickness is too large, it not only wastes the raw material, but …

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