How to Achieve Efficient Continuous Production in Extrusion Molding in Dalian
As a core industrial city in Northeast China's old industrial base, Dalian holds an important position in extrusion molding technologies for plastic processing, rubber products, building profiles, and other fields. As market demands for product quality and production efficiency increase, achieving efficient continuous production has become key for Dalian's extrusion industry to break through bottlenecks and enhance competitiveness. This article explores the pathways to achieving efficient continuous production in Dalian's extrusion molding industry from the perspectives of equipment upgrading, process optimization, and intelligent control.
I. Professional Equipment: The Leap from "Traditional Single Machines" to "Smart Production Lines"
The continuity of extrusion molding depends on equipment stability and integration. Dalian is home to equipment manufacturers represented by Dalian Rubber & Plastics Machinery Co., Ltd., whose independently developed high-precision extruders and automated auxiliary equipment (cooling calibration, haul-off cutting, winding systems) have achieved full-process integration. For example, a Dalian plastic profile manufacturer introduced an intelligent extrusion line featuring servo-driven screws and closed-loop temperature control systems, with screw speed fluctuation controlled within ±0.5 r/min and melt temperature deviation below ±2°C, effectively avoiding downtime or defective products caused by equipment instability. Additionally, online monitoring equipment (such as melt pressure sensors and thickness gauges) provides real-time data feedback, automatically adjusting process parameters and increasing equipment effective operation rate to over 95%, a 20% improvement over traditional production lines.
II. Process Optimization: Achieving Stability and Continuity Through Precise Control
Precise matching of process parameters is the core of continuous production. Dalian enterprises use CAE simulation (e.g., Polyflow software) to optimize screw configurations and temperature profiles, reducing material degradation and energy consumption. For example, in PVC profile extrusion, by adjusting the screw compression ratio and barrel heating zone temperatures, material plasticizing uniformity increased by 30%, extrusion speed increased from 20 m/min to 35 m/min, while maintaining a product pass rate above 99%. At the same time, co-extrusion processes (such as two-color profiles and functional coating co-extrusion) integrate multiple process steps into one, reducing intermediate stages and increasing production efficiency by 40%. The application of closed-loop control systems automatically adjusts haul-off speed and extrusion pressure based on product quality feedback (such as dimensional deviations and surface defects), achieving "optimization during production" and avoiding batch quality issues.
III. Intelligent Control: Digital Empowerment of Production Efficiency
Dalian extrusion enterprises are accelerating the construction of smart factory systems. MES (Manufacturing Execution Systems) enable real-time visual management of production planning, equipment status, and quality data. By collecting operational parameters of extrusion lines (such as output, energy consumption, and fault warnings), predictive equipment maintenance needs can be identified, reducing unplanned downtime by 30%. For example, a Dalian rubber hose manufacturer's MES system can automatically schedule production lines based on order priority, increasing equipment utilization from 70% to 85%. Furthermore, IoT technology connects raw material warehouses, extrusion lines, and finished product warehouses, enabling automatic material distribution and dynamic inventory management, reducing manual intervention and lowering logistics costs by 15%.
IV. Industry Chain Collaboration: Ensuring Raw Material and Supporting Stability
Continuous production cannot be achieved without collaborative support from upstream and downstream partners. Leveraging its port advantages, Dalian has established long-term partnerships with domestic and international raw material suppliers (such as BASF and PetroChina Dalian Petrochemical) to ensure stable raw material quality and timely supply. Local modified plastic enterprises (such as Dalian Jinma Group) provide customized modified materials, reducing time costs for enterprises in pretreatment stages (such as drying and mixing). Meanwhile, within Dalian's extrusion industry cluster (such as the Jinzhou New District Plastics Industrial Park), equipment manufacturers, raw material suppliers, and finished product processors have formed collaborative innovation mechanisms to jointly develop new extrusion processes (such as micro-extrusion and 3D extrusion) and expand application fields (such as medical consumables and new energy components).
V. Talent and Innovation: The Core Drivers of Sustainable Development
Dalian's universities and research institutions (such as Dalian University of Technology and Dalian Institute of Chemical Physics, Chinese Academy of Sciences) provide technical support for the extrusion industry. Universities offer programs in polymer materials processing, cultivating interdisciplinary talents who understand both process technology and intelligent equipment. Enterprises collaborate with research institutions to establish "extrusion technology laboratories" to tackle key technologies (such as biodegradable material extrusion and high-speed extrusion stability). Internal training systems focus on operational skills and intelligent system maintenance, ensuring employees can proficiently operate new equipment and reduce downtime caused by human error.
Conclusion
Through equipment upgrading, process optimization, intelligent control, and industry chain collaboration, Dalian's extrusion molding industry has gradually achieved efficient continuous production. In the future, further progress is needed in green manufacturing (such as energy-efficient extrusion equipment and application of degradable materials) and digital twin technology (such as virtual extrusion line simulation) to help Dalian's manufacturing industry transition toward high-quality development and occupy an even more important position in the national extrusion industry.
