Know-How
What’s Controlling Your Cycle Time? Part 1
Follow these guidelines to maximize your profits.
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Understanding Melting in Single-Screw Extruders
You can better visualize the melting process by “flipping” the observation point so that the barrel appears to be turning clockwise around a stationary screw.
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Tracing the History of Polymeric Materials: PET
How PET evolved from a material for fibers and fabrics to a force in packaging.
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Minimize Sheet Gauge Variation by Roll Design
‘Hour-glass’ sheet gauge can be avoided through a reverse-bending roll design that is out of patent and freely available.
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How to Stop Melt Leakage and Carriage Blow-Back
Follow these tips when you have melt leakage around the machine nozzle and sprue bushing or injection-carriage blow-back.
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Tracing the History of Polymeric Materials: How Nylons & Polyesters Connected
The history of nylons and polyesters are intertwined, and it takes some knowledge of chemistry to understand why.
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How Does Your Molding Machine Control Pack Pressure?
It seems some new machines have pack velocity issues, as machine builders are confusing processors with controllers that are more complicated than they need to be and less user-friendly.
Read MoreConsidering Scaling Up for More Output? Follow These Tips
Keep these calculations handy when you are trying to decide whether a bigger extruder will get you the output you need.
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Rethinking Regrind
Regrind and recycled material are often requisite in projects these days, but for many molders, the “R” word triggers painful memories.
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Tracing the History of Polymeric Materials: More on Polycarbonate
The industry has learned a lot about the advantages and disadvantages of polycarbonate during its more than 60-year history, and it would be difficult to imagine a world in which it did not exist.
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