Article List

• ISO 9001:2015 Certification – Production of Plastic Extrusion Equipment & Auxiliary Machinery

  ISO 9001:2015 Certification – Production of Plastic Extrusion Equipment & Auxiliary Machinery

  Notice July 13, 2026
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  Notice June 13, 2018
• Underwater Pelletizing Troubleshooting Guide: Causes And Solutions for 4 Common Pellet Defects

  In plastic compounding and recycling plants, more and more managers are upgrading to underwater pelletizing (UWP) systems to achieve those perfectly spherical, premium-looking pellets. However, underwater pelletizers are not magic "plug-and-play" machines. They are highly precise, sensitive systems with a steep learning curve. If blindly purchased, poorly specified, or incorrectly operated, they can instantly flood your line with scrap or even destroy expensive die plates. Nanjing Haisi Extrusion shares this definitive troubleshooting guide to help operators navigate the complexities of underwater pelletizing and eliminate the most bizarre pellet defects on the factory floor.

  Products Release July 27, 2026
• Vent Flooding in Twin-Screw Extruders: 4 Core Causes And Practical Solutions

  In twin-screw extrusion processing, material escaping from the vacuum vent—commonly known as "vent flooding" or "vent surging"—is an incredibly frustrating but common headache. The vent port is supposed to quietly exhaust volatiles and moisture; instead, the polymer melt bubbles and spews out of the opening. This not only contaminates the equipment but can quickly force an emergency line shutdown. This guide explains why vent flooding happens and details exactly how to diagnose and resolve it on the production line.

  Products Release July 23, 2026
• High Torque vs. Low Torque Extruders: Differences And Troubleshooting Guide

  In any plastic compounding or pelletizing facility, operators and engineers constantly discuss "high torque" and "low torque" when dealing with twin-screw and single-screw extruders. While they may just look like spinning metal shafts, the mechanical force behind these screws dictates what materials the machine can process, its overall throughput, and the specific troubleshooting challenges it will face. What exactly sets high and low torque apart? And when your extruder's torque goes abnormal—either maxing out or dropping too low—how should operators respond? This guide breaks down the core differences and provides proven, actionable solutions for the workshop floor.

  Products Release July 20, 2026
• 3 Major Extruder Screw Cleaning Methods: A Comprehensive Guide

  Screw cleaning is a critical maintenance step in plastic compounding and pelletizing, yet it is frequently overlooked by manufacturers. Residual carbonized polymers, pigments, or cross-contamination between different materials can cause severe defects like black spots or color streaks in the final pellets, leading to significant economic losses. This guide breaks down the core principles, standard operating procedures, and optimal applications of the three mainstream screw cleaning technologies: Resin Purging, Burn-Off Cleaning, and Hydro-Cleaning. Nanjing Haisi Extrusion provides these actionable insights to help compounding professionals protect their equipment and ensure consistent product quality.

  Products Release July 16, 2026
• 10 "Insider Secrets" To Boost Your Twin-Screw Extruder Performance

  In the twin-screw plastic compounding industry, equipment manuals usually only cover the basics. The real "efficiency-boosting and cost-reducing" secrets are often closely guarded by veteran engineers. These practical tips fall into three categories: processing techniques, hardware modifications, and preventative maintenance. Mastering these small details can lead to a qualitative leap in production efficiency. Nanjing Haisi Extrusion shares these 10 insider secrets to help you optimize your compounding lines, reduce downtime, and maximize overall profitability.

  Products Release July 09, 2026
• The Application of Calcium Carbonate in Plastics And Its Basic Requirements

  Calcium carbonate has achieved remarkable success and become an indispensable raw material in the global plastics industry. To drive the industry forward, suppliers must move beyond merely selling raw powder; they must actively understand how their products interact within polymer matrices and provide robust application technology support. Mastering the compounding of these minerals—often through specialized twin-screw extrusion systems—ensures optimal dispersion and maximum material performance. As material science advances, the strategic use of calcium carbonate will continue to lead the plastics industry toward a more profitable and sustainable future.

  Material Introduction July 06, 2026
• The Ultimate Guide To Twin-Screw Extruder Feeders: 10 Critical Myths Busted

  In modern compounding, the twin-screw extruder is the star of the show, but the loss-in-weight (LIW) feeder is its indispensable partner. With modern extruders operating at extreme speeds (600 to 1000 rpm), polymer residence times have plummeted to a mere 1 to 1.5 seconds. At these speeds, even a split-second feeding fluctuation can cause motor torque spikes and catastrophic line shutdowns. This guide debunks the top 10 most dangerous myths surrounding extrusion feeding systems—from the over-reliance on twin-screw feeding mechanisms to deceptive control panel displays—ensuring your plant maintains maximum throughput and zero downtime. Nanjing Haisi Extrusion emphasizes that a perfectly matched feeding system is the fundamental prerequisite for stable, high-yield twin-screw compounding.

  Products Release June 29, 2026
• Why Is Your Twin Screw Extruder Output Lower Than Expected? Key Causes And Solutions

  Low output in a twin screw extruder is typically caused by feeding limitations, improper screw configuration, incorrect processing parameters, material variations, excessive die resistance, or equipment wear. By optimizing feeding systems, screw design, temperature settings, torque utilization, and maintenance practices, manufacturers can significantly improve throughput, reduce production costs, and achieve more stable plastic pellet production.

  Products Release June 25, 2026