Up to Snuff on Scientific Molding? Then it’s Time to Mold ‘Systematically’
Scientific molding is centered around learning about key molding principles and theories. The strategic application of those principles and theories is what’s known as systematic molding.
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Conveyor Upgrade Keeps Currier on Track
Processor’s switch to modular plastic belt conveyors increased efficiency in bottle making by eliminating downtime.
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Screw Wear: Understanding Causes, Effects, and Solutions
Here’s how to find out what’s happening to your screw and what to do about it.
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Switch to Centralized Vacuum Supply Saves Molder Energy, Boosts Production
Less maintenance means more time for processing, thanks to elimination of vacuum pumps at each press.
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Reducing Low-Level Background Gels in PE Film
While considered acceptable in many cases, they need not be tolerated and are usually attributable to minor screw-design flaws. Here’s some advice on what to do about them.
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Pellet to Gate Control: The Value of a Holistic View of Melt Management
Molders tend to think about the elements of a melt-delivery system, from screw to hot-runner gate, in isolation from each other. But taking an integrated view of the whole system can have big consequences for cycle time, part quality, scrap rates, and energy consumption.
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Accredo’s Credo: Designed for Sustainability, Built for Success
In fewer than 10 years, Accredo Packaging has developed innovative packaging solutions—including the first-ever all-PE barrier standup pouch—while maintaining its commitment to being ‘green.’
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Tooling: Why Ejector Pins Break And How to Prevent It, Part 2
Here’s the when and how to reduce the unsupported length of pins.
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Extrusion: How to Estimate and Control Head Pressure
You rightfully worry about melt temperature, but don’t overlook head pressure, because the two are closely linked and will influence line performance.
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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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A Processor’s Most Important Job, Part 8: Molded-In Stress
How processing adjustments can control molded-in stress.
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Improving Molding Process Capability: The Role of the Five Essential Pillars, Part 2
Each contributes to molded-part quality, and each must be optimized before production begins.
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Tooling: Why Ejector Pins Break...and How to Prevent It, Part 1
In part one of this four-part series, we focus on the molding machine and the ejection system as culprits.
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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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A Processor's Most Important Job, Part 7: Reviewing Crystallinity
There are several process-related issues that influence crystallinity besides cooling rate. Let’s examine a few.
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An Engineering Approach to Mold-Cooling Circuit Design
The Energy Density vs. ΔT/in. relationship is an important step forward in pursuit of a science-based approach to cooling-circuit design. Here’s why.
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Industry 4.0 Gives DMT a Sharper Edge
Leading maker of blade sharpeners boosts productivity in captive molding with cutting-edge connectivity.
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Extrusion: A Simple Way to Evaluate Your Screw Performance, Part 2
A hand-held calculator and some basic equations can help determine whether your screw is up to snuff.
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Injection Molding: Safety First—Know the Compatibility of Different Resins
Certain materials don’t play well together when mixed. So it’s best not to. Here are some guidelines.
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‘Intelligent’ Cooling Helps Molder Improve Productivity, Profitability & Quality
Cost-effective and user-friendly process-cooling system gives custom molder the ability to do more with less.
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