• Gate Design-HS Plastic Mold Shop

    What proper gate design is important? The gate serves as the entrance to the mould cavity and should be designed to permit the injection mold to fill easily. It is very important to follow below gate considerations while picking gate location at the early stage of plastic mould design. Gates should not be placed where part-bonding or impact will take place in use. The gate area will usually have higher residual stresses than the rest of the part due to the packing that takes place. Therefore, it will be weaker than the rest of the part. Position the gate to minimize trimming problems. Scissor-type gate cutters, kept sharp, will work smoothly and leave no “blemish” marks. If possible, gate into the thickest section to avoid incomplete fill or sink marks. This will also minimize flow marks and distortion associated with setting into a thick section from a thin one. Position the gate so that venting…

    Mold design February 8, 2020
  • 11 Tips on how to design injection mold gate

    Gate is defined as an opening on the plastic wall through which the molten plastic is injected into the final part. Gate location can make or break your part design.  Therefore, it is very important to do a pre-analysis to decide the location, size, and shape of the gate as all these can greatly affect everything from the structural integrity to the visual appearance of a finished piece. Yet most CAD designers give little thought as to where to and how to put the gate, or injection point, on the part they design. They simply leave that detail to the mold maker.This is a big mistake. Along with choosing the wrong gate size and type is the root cause of many molding difficulties such as welding line, shrinkage, warp and more. How to design gate on injection mold then? Firstly, decide what kind of gating systems for your part ,if necessary run mold analysis Secondly, below are some guidelines for designing…

    Mold design October 9, 2019


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