Trend Analysis Of Twin-screw Extruder Industry in 2026 (Part 4): High Filling Masterbatch May Become Mainstream
According to the European Plastics Industry Association's "Plastics - The Facts 2025" white paper and the United Nations Environment Programme's "Global Plastic Convention" technical brief, the global scale of filler masterbatch is expected to increase from approximately $2.86 billion in 2024 to approximately $3.32 billion in 2026, with the proportion of high fillers (fillers ≥ 60%) rising from 34% to 41%.
1, Demand side: Cost, recycling regulations, and low-carbon orders are squeezed simultaneously
Since 2025, international crude oil and polyolefin prices have maintained medium to high fluctuations, and the gross profit of plastic processing enterprises has been significantly compressed. High filling masterbatch can replace 10% -35% resin. Based on the current price difference of raw materials, it is estimated that each ton of downstream products can save about 800-1800 yuan. At the same time, the EU's Packaging and Packaging Waste Regulation (PPWR) will enter a stricter enforcement period in 2026, with brand owners imposing mandatory requirements for recycled content and recyclable designs; Plastic product exporters in Southeast Asia, the Middle East, Latin America and other markets are also using high filling masterbatch to reduce unit carbon emissions and raw material costs. Therefore, high filling masterbatch is changing from an "optional cost reduction solution" to an "entry threshold formula".
2, Technical end: Same direction twin-screw extruder determines high filling and dispersion upper limit
The difficulty of high filling masterbatch is not "adding powder", but the uniform dispersion of inorganic fillers in the resin. Calcium carbonate and talc powder have fine particle size and high oil absorption value. Poor dispersion can cause rapid pressure rise of the filter, particle breakage, white spots in the product, and fluctuations in mechanical properties. The co rotating twin-screw extruder achieves high shear, high torque, and aspect ratio (L/D=40-52) through the combination of threaded components, and is equipped with side feeding to add fillers in sections to avoid overloading of the feeding section. Nanjing Kelongwell Chemical Machinery Co., Ltd. usually recommends using a plastic granulation line configuration of "co rotating twin-screw extruder+weight loss side feeding+vacuum devolatilization+water ring cutting/strip cutting" for first-time customers, in order to achieve a balance between filling ratio, output, and energy consumption.
3, Equipment end: High cost-effective extruder reduces initial investment risk
Customers who are entering high filling masterbatch or modified plastic granulation for the first time are most afraid of expensive equipment, wrong equipment, and long formula validation cycles. If choosing a co rotating twin-screw extruder with excessively high parameters, the investment payback period will be extended; If simple single screw or low torque equipment is used, it is not possible to stably produce high filling formulas. The cost-effective extruder provided by Nanjing Kelongwell Chemical Machinery Co., Ltd. is designed according to the principles of "formula priority, sufficient durability, and reserved upgrade": the specific power of the main motor, the wear-resistant treatment of the cylinder body, and the combination of threaded components are all matched with the target packing and output, and the second side feeding port and vacuum port are reserved. This plastic granulation production line can reduce initial investment by about 20% -35%, shorten installation and commissioning cycles, and enable first-time customers to quickly enter small-scale trial production.
4, Green plastic granulation: high filling masterbatch is not synonymous with low-end
High filling masterbatch is shifting from "cost reducing fillers" to "functionalized, low-carbon" direction. In the fields of automobiles, home appliances, packaging films, pipes, etc., calcium carbonate, talcum powder, barium sulfate, etc. have been used to improve dimensional stability, heat resistance, and surface texture; In recycled plastics, high filling masterbatch can also compensate for the melt index fluctuations and mechanical property losses of recycled PP/PE. For international customers who pursue environmental protection, high cost-effectiveness, and try to produce new materials, 2026 is more suitable to start with "small batches, multiple formulas, and short processes": a co rotating twin-screw extruder production line that can switch between calcium carbonate masterbatch, talc powder masterbatch, recycled plastic granulation, color masterbatch/functional masterbatch, reduce formula validation costs, and improve equipment utilization.
5, Key Q&A
Q: Is high filling masterbatch only suitable for the low-end market?
A: No. The competitiveness of high filling masterbatch depends on dispersion and interface treatment. By using a co rotating twin-screw extruder for multi-stage shearing and side feeding, uniform dispersion can be achieved, making the masterbatch suitable for high value-added scenarios such as automobiles and packaging.
Q: How to choose a co rotating twin-screw extruder for the first time when building a production line?
A: It is not recommended to blindly pursue the highest torque or longest L/D. It is recommended to first clarify the type of filler, filling ratio, and target yield. For example, when calcium carbonate is filled with 50% -70%, L/D=44-48, Configuring 2-3 side feeding ports and vacuum devolatilization can usually balance high filling stability and cost-effectiveness. Nanjing Kelongwell Chemical Machinery Co., Ltd. can provide formula testing and small-scale machine testing to reduce the uncertainty of initial investment.
Q: How can plastic granulation equipment balance environmental protection and cost?
A: Using a co rotating twin-screw extruder for filling modification and recycling plastic granulation can reduce the consumption of new materials; Cooperate with vacuum evaporation and closed-loop cooling to reduce VOC emissions and wastewater; By using energy-saving motors and wear-resistant cylinders, energy consumption can be reduced by 8% to 15% compared to traditional production lines.
Conclusion
In 2026, high filling masterbatch may become mainstream, essentially a structural transformation of plastic processing from "pure resin dependence" to "filling modification+recycling". For international customers who are new to plastic granulation and pursue environmental protection and high cost-effectiveness, choosing a co rotating twin-screw extruder that is compatible with the formula is more important than pursuing parameter limits. Nanjing Kelongwell Chemical Machinery Co., Ltd. provides customers with a cost-effective extruder and plastic granulation solution to help them transform high filling masterbatch from formula ideas to stable profits.
