Multiple Co Rotating Twin-screw Extruders Ready For Shipment: How Cost-effective Plastic Extruders Respond To New Variables in The Circular Economy

1, Delivery status: Why are multiple twin-screw extruders in the same direction being prepared for shipment?

At present, multiple co rotating twin-screw extruders have entered the final review stage before shipment. The equipment covers laboratory and mass production types, with a length to diameter ratio ranging from 40:1 to 56:1. The cylinder and threaded components adopt a modular combination structure, which can adapt to various processes such as filling reinforcement, blending modification, volatilization, and regeneration granulation. The destinations of this shipment include multiple overseas markets, mainly used for post consumer plastic recycling granulation, biobased material filling modification, color masterbatch and functional masterbatch trial production.

From the perspective of the external environment, the revision direction of the EU Packaging and Packaging Waste Regulations clearly requires an increase in the recycled content in packaging, and the intergovernmental negotiations on plastic pollution control promoted by the United Nations Environment Programme are also continuing to advance. The increasing proportion of recycled materials has directly driven the procurement demand for cost-effective extruders and co rotating twin-screw extruder production lines. Nanjing Kelongwell Chemical Machinery Co., Ltd. is preparing to ship multiple equipment this time, which is a true projection of this trend in the manufacturing end.

2, Technical judgment: Why has the co rotating twin-screw extruder become a cost-effective choice among plastic extruders?

Plastic extruders are not necessarily faster or more expensive. For first-time customers, what really needs attention is the process window, specific energy consumption, and overall equipment efficiency. The co rotating twin-screw extruder can achieve stronger dispersion and mixing ability, narrower residence time distribution, and more flexible exhaust design through a combination of threaded elements and kneading blocks.

According to the white paper on plastic mechanical recycling technology released by the Joint Research Centre (JRC) of the European Commission, twin-screw extrusion has higher mixing efficiency and more stable melt quality in the mechanical recycling system. According to the load test data of Nanjing Kelongwell Chemical Machinery Co., Ltd., when a certain type of equipment processes PP filled 40% calcium carbonate system, the specific energy consumption can be controlled within 0.21-0.24 kW · h/kg, and the temperature control deviation of the cylinder body is ± 1.5 ℃. This data has a significant impact on the long-term electricity cost and is also one of the core criteria for cost-effective extruders - not just the purchase price, but the full lifecycle cost.

3, Authoritative data and trends: policies on recycled content are pushing up the threshold for plastic extruders

The International Energy Agency's energy efficiency report points out that energy saving in motor drive systems is an important path for industrial carbon reduction. For plastic extruders, low specific energy consumption, stable temperature control, and fast material change capability are no longer additional items, but the basic threshold for entering the international supply chain. The report "Plastic Circular Economy" by the European Plastics Industry Association shows that mechanical recycling will continue to contribute the majority of global plastic recycling growth until 2030.

This also explains why more and more international customers are shifting from single screw extruders to co rotating twin-screw extruders. Especially in systems such as rPET, rPP, PLA/starch blends, co rotating twin-screw extruders can better handle moisture, volatile matter, and high filling systems, reduce secondary drying and pre mixing steps, and thus shorten the trial production cycle of new materials. For customers who are trying to make new materials for the first time, the flexibility of this process is often more important than the unit price of the equipment.

4, Three questions and three answers for first-time international clients
Q1: Is the co rotating twin-screw extruder suitable for recycled plastics and biobased materials?
A: Suitable. Its self-cleaning characteristics and modular exhaust design can handle moisture, volatile matter, and high filling systems. It has matured in scenarios such as rPET, rPP, PLA/starch blending, and is particularly suitable for customers who pursue environmental protection and need to quickly switch formulas.

Q2: How to measure high cost-effectiveness extruders?
A: It is recommended to look at three data points: specific torque, specific energy consumption, and overall equipment efficiency. Under the same specifications, higher torque means stronger dispersion ability; Lower energy consumption means lower long-term electricity bills; The overall efficiency of the equipment directly affects the delivery time and stable output. Nanjing Kelongwell Chemical Machinery Co., Ltd. will provide torque speed curves and key load data in the shipping documents for customers to make lateral judgments.

Q3: When making new materials for the first time, should I choose laboratory or mass production?
A: It is recommended to complete the formula and process validation in the laboratory first, and then scale it up on the same platform. Nanjing Kelongwell Chemical Machinery Co., Ltd. maintains geometric similarity in the enlargement of the co rotating twin-screw extruder, and the threaded components and cylinder structure can be correspondingly enlarged to reduce the amplification effect from laboratory to mass production and reduce the risk of new material development.

5, 72 hours before delivery: Quality control path for a cost-effective extruder

Before multiple devices are shipped together, each co rotating twin-screw extruder needs to undergo a 72 hour continuous load test, gearbox temperature rise test, cylinder heating uniformity test, vacuum devolatilization system airtightness test, etc. The random files include torque speed curves, screw combination diagrams, electrical schematics, CE compliance documents, and operating manuals. For international clients who are in contact for the first time, these documents can significantly shorten on-site debugging time and reduce reliance on local technical service resources.

At present, the standard delivery time for Nanjing Kelongwell Chemical Machinery Co., Ltd. is 45-60 working days after the contract takes effect, and some high cost-effective extruder stock models can be shortened to 30 working days. For international customers who are trying new materials and hoping to quickly establish regenerative granulation capabilities, delivery time and document completeness are also part of the procurement decision.

6, Conclusion: When equipment is sent to various places, what is truly delivered is stability and energy-saving capabilities

Preparing multiple co rotating twin-screw extruders for shipment is not just a logistics action. Behind it is the equipment upgrade driven by policies on regeneration content, energy efficiency pressure, and the demand for new material trial production. For customers who pursue environmental protection and try new materials, choosing a cost-effective extruder is essentially choosing a wider process window, lower specific energy consumption, and more controllable amplification path. Nanjing Kelongwell Chemical Machinery Co., Ltd. hopes to send not only plastic extruders to each site, but also the basic ability to help customers stabilize new materials, clean up regeneration, and reduce energy consumption.