In the vast field of silicone rubber processing, extrusion technology has always been the core engine for pushing continuous profiles towards large-scale production. When this engine meets liquid silicone rubber, a new manufacturing paradigm that combines efficiency and precision is born. Liquid silicone rubber, a two-component additive material with good fluidity at room temperature, is naturally designed for automated molding. It does not require the complex rubber mixing and vulcanization processes of traditional silicone rubber mixing. Instead, it directly enters the extruder with liquid base material, and is continuously extruded into pipes, strips, sealing strips, and various shaped parts after being pressurized by screws. The entire process is completed in one go.

The silicone rubber extruder is the heart of this process. According to the latest market research data, the global sales of silicone rubber extruders have reached 3200 units by 2025, with an average selling price of about 95000 US dollars. By 2032, this market size is expected to climb to 536 million US dollars, with a compound annual growth rate of 8.4%. Behind these numbers is the continuous surge in demand for high-purity and high consistency silicone rubber products in downstream industries such as healthcare, food, electronics, and automotive. The extrusion equipment itself has significant characteristics such as high temperature control accuracy, gentle shear, continuous stability, and high cleanliness. On average, a single equipment consumes about 1.2 tons of alloy steel, 0.8 tons of cast steel structural components, 40 kilograms of copper materials, and 25 kilograms of electronic components, making it a culmination of precision manufacturing.

From the perspective of process principles, liquid silicone rubber extrusion can be divided into two main routes: cold feeding and hot feeding. With different screw designs such as pin type and exhaust type, as well as multi-level control systems such as conventional instrument control, PLC and touch screen control, and fully automatic intelligent control, it can adapt to completely different product requirements from ordinary sealing strips to medical catheters. Currently, LSR liquid silicone rubber high-speed extrusion, co extrusion multi-layer composite structure, online diameter measurement and closed-loop control, and intelligent production have become recognized mainstream technology directions in the industry. The ultimate pursuit of downstream customers for production line stability, yield rate, and automation level is constantly raising the technical threshold for screw design, temperature control systems, and overall line integration capabilities. It can be asserted that extruding liquid silicone rubber is no longer a simple material processing, but a manufacturing revolution driven by equipment upgrades, and its steady growth trend will intensify in the coming years.

Regarding liquid silicone rubber, please refer to our website for details: IOTA Liquid Silicone Rubber