This article explores the five main factors that cause wear in twin-screw extruder barrels and screws: abrasive wear from fillers, corrosive additives, high-intensity wear zones, extreme operating conditions (temperature and pressure), and internal moisture or gases. It emphasizes the importance of choosing high-performance materials—especially powder metallurgy steel—to extend component lifespan, reduce maintenance costs, and improve production efficiency in plastic compounding operations.

This article provides an overview of rubber and plastic material blending and modification techniques used to enhance overall performance. It details common thermoplastic elastomer (TPE) blends such as TPS, TPU, and TPEE with plastics like PP, PE, ABS, and PVC. Each blend is chosen to improve specific properties like hardness, elasticity, processability, or flame resistance. The article also introduces typical processing equipment like twin-screw extruders and mixers, emphasizing their role in efficient material compounding.

This article explains how to properly design and operate pneumatic conveying and feeding systems for powdered calcium carbonate (CaCO₃) in plastic compounding. It highlights the challenges caused by particle interactions and varying material properties, emphasizing the need for customized systems. Key considerations include material flow behavior, equipment selection (such as rotary valves, hoppers, and feeders), and process optimization to ensure stable performance, accurate dosing, and efficient plant operation.

This article explains how to choose suitable carrier resins for color masterbatches in TPE (thermoplastic elastomer) pelletizing based on application scenarios. It emphasizes key selection criteria such as compatibility, processing temperature, performance impact, and cost-efficiency. Specific carriers like LDPE, PP, PS, EVA, and SEBS are recommended for different TPE uses—ranging from toys and automotive parts to medical tubing and food-grade products. It also highlights considerations for pigment-carrier matching, masterbatch concentration, and processing optimization.

This article outlines four key considerations when selecting plastic additives. First, the compatibility between additives and polymers is crucial to ensure uniform mixing and long-term stability. Second, additives must withstand the processing conditions, especially high temperatures. Third, the synergy or antagonism between multiple additives can significantly impact performance. Finally, the intended use of the plastic product—such as food packaging or medical applications—places strict requirements on the toxicity and extractability of the additives.

This article explains how to identify and resolve resin degradation in single screw extruders. Resin degradation, often caused by stagnant flow and high temperatures, leads to product contamination. The solution involves step-by-step screw removal, inspection, and design analysis—especially addressing issues like small thread radii, improper groove dimensions, and poorly designed mixing elements that cause Moffatt eddies and stagnation. Preventive measures include proper screw design, temperature control during shutdowns, and avoiding deep or narrow grooves that trap resin.

This article explains why recycled plastics are often more expensive than virgin plastics, highlighting three main reasons: high processing costs, the need for property-enhancing additives, and expensive certifications. Despite the higher price, companies use recycled plastics to meet environmental regulations, improve ESG image, and satisfy global market demands.

This article outlines the main types of twin-screw extruders—classified by screw rotation direction, structure, engagement, purpose, and size—and explains how to choose the right model based on material characteristics, production scale, and efficiency needs. It emphasizes that factors like screw design, speed, temperature control, and process parameters significantly affect output and performance.

Although recycled plastics are seen as a key solution to pollution and circular economy goals, they face limited adoption due to high costs, weak policies, technical bottlenecks, market resistance, and low consumer acceptance. Breaking through requires stronger regulations, technological innovation, supply chain coordination, and consumer incentives to shift from "concept popularity" to real market demand.

This article explains the advantages of side vacuum exhaust systems in plastic extrusion. Unlike traditional top-mounted systems, side vacuum systems prevent material overflow by positioning the vacuum port laterally, improving process stability and reducing maintenance. It also clarifies that a stable negative pressure—not higher vacuum strength—is key to effective degassing. Factors such as temperature control, screw speed, and screw design also significantly impact performance. The side vacuum system is especially suitable for high-volatility materials where reliability is critical.