Articles
Air-Ring Upgrade Pumps Up the Output
Film processor Dallas Plastics boosts throughput by as much as 40% by retrofitting a new air ring—without the need for IBC.
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Mixed Bag for Volume Resin Prices
As hurricane aftermath recedes, PE, PS, PVC prices are retreating; engineering resins are rising; PP and PET are “iffy.”
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Why Drying Polyolefins Might Be Right for Your Process
From a technical standpoint, drying non-hygroscopic materials such as polyethylene and polypropylene may not be necessary. However, doing so may be advantageous to your process. Here are details.
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Determining Vent Depths in Injection Molding
Experiments reveal the relationship between vent depths and part thickness, allowing molders and moldmakers to more precisely determine vent dimensions.
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Making an Impact In Thin-Gauge Sheet
Creating a ‘virtually integrated supply chain’ that connects it with suppliers and customers has helped Impact Plastics add value to a wide range of sheet products, with a growing emphasis on PP.
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Injection Molding: Nozzle Heaters & Thermocouples: A Case of Wiring Done Wrong
Incorrect placement of wires for these components frustrates molders and costs them money to boot.
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A Processor’s Most Important Job, Part 1: Molecular Weight
Many processors don’t realize that preserving material characteristics is crucial to product success and failure. The focus here is on molecular weight.
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Switching Hydraulic Oil Saves Energy & Machine Downtime
Test at leading molder shows a high-viscosity, zinc-free oil improves pump efficiency and runs longer, cleaner, and quieter.
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3D Printing Start-Up Competes with Injection Molding
A year-old company is devoted to large-scale custom 3D printing at prices competitive with injection molding to 20,000 parts.
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Four Ways to Tackle Threaded Inserts for Plastics
If you need to make plastic parts with strong joints and reusable threads, metal threaded inserts are the way to go. The best method depends on the part requirements.
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Winners of 2017 SPE Automotive Awards Wow with Many ‘Firsts’
Innovative, transferable, and intelligent use of thermoplastics capture eight of nine categories.
Read MoreRecycled Plastics Prices: PET Looks Stable, HDPE on a Yo-Yo Path
Most recyclers say 2017 ended on a flat note, after brief disruption by Hurricane Harvey, and some recycled resin prices may rise a bit in the second quarter.
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