Plastic Bag Thickness: Mil, Micron and Gauge Chart by Bag Type
How mils, microns and gauge convert, typical plastic bag thickness by bag type, a trash bag thickness chart and how to measure a bag with a scale or a micrometer.
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Plastic Recycling Pelletizing: How Plastic Scrap Becomes Pellets
The 6 steps of plastic recycling pelletizing, strand vs water-ring vs underwater cutting, single-stage vs two-stage machines, what to keep out of the hopper and what drives the cost.
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Blown Film Troubleshooting: 9 Common Problems, Causes and Fixes
A quick reference table and a section for each of 9 common blown film problems: what you see, the likely cause and what to check first.
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LLDPE vs LDPE: Key Differences for Plastic Bags and Film
LLDPE vs LDPE compared: structure, density, strength, clarity, sealing and melting point, which bags each suits, and how to run both on a blown film machine.
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How Plastic Bags Are Made: The Process Step by Step
How plastic bags are made in 6 steps: resin, blown film extrusion, winding, printing, sealing and cutting, and trim recycling. With factory photos and videos.
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HDPE vs LDPE: Differences and Which to Use for Plastic Bags
HDPE vs LDPE compared: density, feel, clarity, melting point and recycling code, plus which resin to use for each type of plastic bag.
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Types of Extruders: How They Work and Which One You Need
The main types of extruders by screw and by product: blown film, cast sheet, pipe, recycling, filament and co-extrusion. With a comparison table and buying tips.