Mold Best Assurance Company Limited
Runners and gates control the flow of the molten material through the mold and into the cavity to create your final plastic part.
Often used for structure reinforcement, ribs allow greater strength and stiffness in molded plastic parts without the need to increase the wall thickness.
Insert molding is the process of injection molding molten thermoplastic around ceramic or metal pieces placed in the injection molding cavity.
An injection mold undercut is any indentation or protrusion that prohibits an ejection of a part from a one-piece mold.
Design your parts to avoid tight tolerance in areas prone to warpage or distortion.
An added benefit to injection molding parts is the ease of incorporating logos, labels, instructions or diagrams right onto your custom parts.
Not only injection mold temperature determines melt temperature as it moves quickly through the mold. The melt temperature itself as it starts its journey through the injection mold (self-evidently) is the reference point. Speed of injection, particularly in thin sections, is of huge influence, as it will determine the degree of shear heating.
Many engineering materials like PBT (Polybutylene terephthalate) have a tendency of out-gassing. The best practices that I have to date are: Add 10mm wide vents spaced 30mm from each other all the way around parting line. Always follow the recommendations of the material company for vent depth.
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