Mold Design Fundamentals P2

Chia sẻ: Goi Xanh Xanh | Ngày: | Loại File: PDF | Số trang:0

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Mold Design Fundamentals P2

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In the insulated runner system, the runner diameter is oversized (say, 15~30mm) in order to maintain the molten state of the material. The large diameter runner allows an inner molten melt to pass through during the molding cycle because of the insulation effect of frozen skin shell surrounding the melt core. The insulation runner system has the advantage of extremely simple construction, low cost tooling, and high efficiency, provided the system can be left running undisturbed for long periods. This design is suitable for most olefinic plastics (such as polyethylene (PE), polypropylene (PP)... ) and polystryene (PS)....

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