Injection Know How
How to Quickly Verify Your Machine & Process Setpoints
For a quick check of your process setup, the injection-pressure-vs.-time graph is your best tool.
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The 'Butterfly Effect' in Injection Molding—A Connected Process
In injection molding, a seemingly minor change in a setpoint can have a significant impact on part quality and process robustness and repeatability. That’s why Scientific Molding focuses on process outputs, not setpoints.
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Mold-Clamping Details for Profit
Taking time to sweat the details of clamping is not much fun, but they do make a difference in a company’s bottom line.
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What’s With All the Static?
Static buildup on polymers can cause a variety of problems, some rather unpleasant. Yet there’s an inexpensive way to eliminate it, and we have data as proof.
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PART 2: The Importance of Consistent Fill Time
To make identical parts, you need to keep fill time constant. In part one we covered the why. Here’s the how.
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Part 1: The Importance of Consistent Fill Time
To make identical parts, you need to keep fill time constant. Here’s why.
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Identifying and Correcting Splay
Splay adjustments can be a simple fix, or can require several hours of babysitting a press and head scratching. Learn to find the root cause.
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Injection Molding: Sliding vs. Locking Ring—Which Non-Return Valve Is Right for You?
The locking-ring style appears to dominate the market, as most believe it makes a make a better seal and leaks less. But is this really so?
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Injection Molding: Is There a ‘Most-Important’ Process Parameter?
A case can be made for multiple variables—fill balance, fill time, injection pressure, cavity pressure—as most important. But there is something else altogether that is essential to successful injection molding.
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Injection Molding: Fill Based on Volume, Not Weight
Most parts should be 90-99% full after first-stage—by volume not weight. Here’s why that’s important and how to make a first-stage-only part.
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