The Leistritz ZSE-12 has been redesigned with a micro-plunger feeder.
NPE Booth W6343
ZSE-12 This Leistritz twin-screw extruder is designed for continuous processing of pharmaceutical products, such as transdermals, implants and polymer-encased pharmaceuticals, in low throughputs and small batches. It features modular stainless steel barrels and screws on splined shafts, and its process section can be configured for liquid injection and multi-stage devolatilization.
What’s new? New design elements, including a patented micro-plunger feeder, with the ability to perform at higher temperatures. Originally, the extruder, rated for a maximum temperature of 482 degrees Fahrenheit, had a clamshell barrel design and no plunger feeder. Now, it features a modular barrel design and can handle a top temperature of 752 degrees Fahrenheit.
Benefits Continuous processing of batches as small as 50 grams up to 2.2 pounds an hour. To facilitate starve-feeding, the feed screw elements are designed to convey materials at a higher rate than is being delivered by the micro-plunger. The micro-plunger meters small amounts of material in virtually any form with near-full utilization of the batch.
Senior Staff Reporter Karen Hanna covers injection molding, molds and tooling, processors, workforce and other topics, and writes features including In Other Words and Problem Solved for Plastics Machinery & Manufacturing, Plastics Recycling and The Journal of Blow Molding. She has more than 15 years of experience in daily and magazine journalism.
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