Under What Circumstances Can PLC Bring The Maximum Benefits? Analysis Of The Main Application Of PLC Control System in Co Rotating Twin-screw Extruder

1, A thought-provoking proposition

By 2026, the global plastic extruder market is expected to reach $48.5 billion, with the Asia Pacific region accounting for 48.5% of the market share. At the same time, over 65% of the new production lines have been equipped with industrial IoT modules to monitor melt temperature, pressure, and torque in real-time, reducing downtime by approximately 18%. A clear signal is being transmitted: on the co rotating twin-screw extruder, the PLC control system is no longer an optional item, but a core variable that determines the return on investment.

But the benefits of PLC are not the same in all scenarios. Its greatest value lies precisely in the moments when "process error tolerance is the lowest, material trial and error costs are the highest, and continuous production stability requirements are the strictest" - and this is exactly what international customers who pursue environmentally friendly and cost-effective extruder solutions need most when trying to produce new materials or recycle pellets for the first time.

2, Three major scenarios: Where is the peak revenue of PLC control systems?
Scenario 1: During the initial trial production of environmentally friendly new materials, the PLC changes the "feasible formula" to "feasible mass production"

For international customers who are new to extrusion technology, their biggest concern is not equipment prices, but "laboratory feasibility and mass production collapse". Environmentally friendly new materials such as high filling masterbatch and bio based biodegradable materials are extremely sensitive to temperature windows. The co rotating twin-screw extruder equipped with Siemens PLC control system can achieve multi zone independent PID temperature control accuracy of ± 1.0 ℃, formula storage, one click calling, and traceable and reproducible process parameters. The COLOWE 35D co rotating twin-screw extruder reduced the number of apparent crystal points in the film by 60% compared to traditional formulations in high filling masterbatch samples with 82% filling volume, and the melt index change rate was only 8%, far lower than the industry's common fluctuation of 20%. PLC significantly narrows the gap between "sample" and "mass production".

Scenario 2: When pursuing "new like material" quality in recycling and granulation, PLC is the guardian of accuracy

The demand for specialized processing equipment for recycled plastics is expected to increase by 37.2% between 2025 and 2026, becoming an undeniable incremental market. The European Union has mandated a 30% recycled plastic content in packaging, and mandatory ratios are also being established in the automotive and electronics sectors. Due to the complex sources and significant fluctuations in moisture content, recycled materials require much higher temperature control and devolatilization processes than new materials. The COLOWE 65D high torque co rotating twin-screw extruder, with its PLC control system, controls the black spots of PC return particles to ≤ 3/200g, with a tensile strength retention rate of up to 96%, meeting the requirements of high-end electronic and electrical injection molding. High cost-effective extruder combined with PLC control system makes "recycled materials can only be used at a lower level" a thing of the past.

Scenario 3: When pursuing low-carbon cost reduction in high-energy consumption production lines, PLC is the energy-saving center

The power consumption during the extrusion process mainly occurs in the plasticizing system. By optimizing the rheology of the plasticizing system and heating and cooling scheme, a certain model of co rotating twin-screw extruder from Kelongwell has reduced the power consumption per ton to 0.25 kWh/kg in the continuous production of PP+40% calcium carbonate filling granulation, saving about 15% to 20% energy compared to the industry's common level. Calculated based on an annual production capacity of 2000 tons, the purchase cost of an auxiliary machine can be saved in just one year with electricity bills. The PLC control system is the technical foundation for achieving this energy-saving goal by adjusting the power output of each heating zone in real time, optimizing the matching of screw speed and feeding rate. The "cost-effectiveness" of high-performance extruders can only be truly extended from procurement costs to operating costs with the support of PLC.

3, Key Q&A: Practical Concerns of International Customers
Q1: I just tried making environmentally friendly new materials. Can the PLC control system enable the co rotating twin-screw extruder to have multiple formulas in one machine?

Absolutely possible. The COLOWE co rotating twin-screw extruder adopts a modular threaded component and a split barrel design. The entire screw configuration can be reorganized like building blocks, and with the help of PLC's formula storage and one click call function, the formula switching from 50% to 85% filling amount only requires the replacement of local threaded blocks to quickly switch production. The thorough cleaning time is shortened by about 40% compared to traditional models.

Q2: Will the initial investment significantly increase when the cost-effective extruder is equipped with a PLC control system?

The initial investment of PLC control scheme is much lower than that of traditional DCS architecture, but the control level is improved by one level. More importantly, PLC systems can typically recover incremental costs within 8 to 12 months by reducing waste, lowering energy consumption, and shortening start-up time. For international clients who are budget sensitive but do not compromise on quality requirements, this is the most practical investment choice.

4, The Base of the Pyramid: Why is COLOWE a Reliable Carrier for Maximizing PLC Revenue?

Nanjing Kelongwell Chemical Machinery Co., Ltd. is deeply engaged in the field of co rotating twin-screw extruders, and its products are exported to more than 50 countries including Japan, Indonesia, Singapore, Australia, Dubai, etc. The 75T series ultra-high torque co rotating twin-screw extruder from Kelongwell has achieved an excellent output of 2.5 tons per hour, and the 35 type 37kW twin-screw extruder has successfully passed the high concentration color masterbatch process validation.

For international customers who pursue environmental protection, try to produce new materials, and are new to extrusion technology, COLOWE provides more than just a cost-effective extruder - from material testing and screw configuration recommendations to overseas installation, commissioning, and operation training, COLOWE's turnkey project allows the full potential of PLC control systems to be truly realized on customers' production lines for quality, capacity, and profit.