Product News

• 7 Strategies To Keep Your Twin-Screw Extruder Free of Black Spots And Carbon

  Whether you are changing colors, switching resins, or dealing with carbonized black spots, cleaning a twin-screw compounding extruder is a major challenge for factory floors. Extended changeover times, massive scrap rates, and the nightmare of manually pulling screws can severely drain your profitability. To help you protect your polymer compounding equipment and maximize machine uptime, Nanjing Haisi Extrusion has compiled 7 definitive workshop-floor strategies to master extruder cleaning and ensure your plastic pelletizing machine runs at peak performance.

  Products Release August 13, 2026
• Why Extruder Screws Break at Restart And How To Prevent It

  Many process engineers and operators have experienced this exact nightmare: Everything was running perfectly before shutdown, but when starting the machine the next morning, a loud bang echoes across the workshop floor. The screw shaft has completely snapped off behind the torque limiter. Why does an extruder screw suddenly break during a seemingly normal restart? Can you trust your machine's cold start protection? And why is manual barring the absolute last line of defense? Let’s break down the root causes and outline the standard operating procedures to eliminate screw breakage permanently.

  Products Release August 10, 2026
• Does The Auxiliary Extruder Affect Plasticization in A Pelletizing Machine?

  In plastic compounding and pelletizing production, the plasticization effect is the ultimate metric for pellet quality. A common saying on the factory floor is: "Plasticization relies entirely on the main extruder; it has nothing to do with the auxiliary machine." While this statement is theoretically accurate, operators must view this relationship more comprehensively during actual production. Here is a breakdown of how the primary and secondary machines interact to determine your final product quality.

  Products Release August 06, 2026
• Daily Extruder Inspection Checklist: 5 Steps To Ensure Production And Reduce Breakdowns

  Many pelletizing equipment failures are not sudden catastrophes; they are the result of minor, neglected issues accumulating over time. By implementing a strict daily system inspection, operators can effectively reduce unplanned downtime, minimize repair costs, and significantly extend the equipment's operational lifespan. Nanjing Haisi Extrusion shares this essential five-step daily checklist to help you safeguard your production line and eliminate hidden mechanical hazards.

  Products Release July 30, 2026
• 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