What to Do About Weak Weld Lines

Weld or knit lines are perhaps the most common and difficult injection molding defect to eliminate. Weld lines occur when part or tool design features—like holes or ribs—split the melt flow and the separate flows do not meld completely when they meet. Weak weld lines occur when there is little or no polymer chain entanglement…

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Factors Important to Injection Molding

Factors Important to Injection Molding There have been a lot of breakthroughs to make the injection molding process more effective and predictable. When field experts apply their knowledge with the experience of years of producing highest-quality injection molding services and processes, you end up with the highest-quality designs, processes and approaches that continue to move…

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Return on Investment For Injection Molding Product Development

Return on Investment For Injection Molding Product Development We have been quoting a lot of injection molding mass production lately, so we wanted to discuss the sort of investments and sale quantities people generally need to make in order to cover the development, tooling, and part costs. Although the particulars in this discussion revolve around…

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How to choose the correct gate type and the correct mold steel?

Gate Type & Mold Steels The type of gate depends upon a number of factors including the following: 1. Are you using hot runner or cold runner? Both runners have a number of gate types to choose from. For example, commonly used gates for cold runners are tab, submarine and pin gates. For hot runners…

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