best practices
Molder Gets Hermetic Seal, High Yield with Servo Welder
Supplier of power protection systems avoids redesign of molds by replacing pneumatic ultrasonic welder.
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Mold Performance: Tap Into the Power of Data Collection
Collecting core data in a transparent way allows molders to drill into the true cost of tooling issues and develop real goals to keep production flowing.
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Polymer Resources: Compounding's 'Small Big Guy'
This compounder combines a service-first, small-company mindset with the technical might of larger companies to carve a niche in engineering plastics.
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Polyolefin Discoloration: New Additive Solutions Solve Common Problems
There’s a growing demand for PE films with lower initial color and improved color stability, as well as better retention of physical properties. New stabilizer systems address these and similar concerns for molded PE and PP parts.
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Tooling: Critical Design Considerations for Sprue Bushings
Among them are good cooling, proper orientation, solid retention, structural integrity, generous radii, and an appropriately polished bore.
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Extrusion: The Importance of Proper Barrel Supports
Supports that allow the barrel to expand and contract easily will prevent alignment issues. Examine them periodically for proper operation, particularly if you’re experiencing excessive wear.
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Injection Molding: Time for Another Look at Non-Return Valves
First and foremost, they must seal properly, and check valves with stepped angles or radiused seats perform the best.
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Materials: Cycle Time: Science vs. Rules of Thumb—Part 2
Understanding cooling—how a given material develops modulus as it solidifies—requires access to data that provides some insight into the relationship between modulus and temperature. Dynamic mechanical analysis is a helpful tool.
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Understanding Low-Rate Feeding for Continuous and Batch Processes
Molders and extruders that need to feed tiny amounts of material to their process require precision in both the material being fed and the equipment doing the dosing. When a shot size consists of three pellets, there is no margin for error.
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How to Collect and Interpret Extrusion Process Data; Part 3
In this final installment, learn how process data can be used to identify and fix extrusion issues.
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