Drying

Dryers are used to minimize or eliminate problems that moisture in the plastics cause during processing. If moisture-sensitive polymers like nylon, polycarbonate, PBT, PET and a host of others are not dried prior to processing, the physical properties of that resin/part will be drastically affected. There are various types of drying technologies available, including dual bed desiccant, desiccant wheel, vacuum, oven and infrared. Dryer selection may be dictated by the throughput requirement of the process, as well as price and other features desired.

Knowledge Center

Insights into plastics technologies from industry experts.

Dehumidifying Dryer
Features

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.

Features

What You Need to Know About Drying Specialty Nylons

PPA is being used more frequently by molders for demanding high-heat applications in automotive and other markets. While in the nylon family, it does not dry quite like nylon. Follow these tips.
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New Product Announcements
New Product

Injection Molding: Wittmann’s U.S. Debut of Two Machines, New Robots & Auxiliaries at NPE

A high-speed packaging machine, two-shot micromolder, and new high-end and economical robots, plus several new auxiliaries bow in at NPE.