Plastic Extrusion for Polyamide Thermal Break Strips | Precision Manufacturing

Plastic extrusion is the foundational manufacturing process at the heart of our thermal break strip production, a continuous operation where our specially formulated thermoplastic compounds, primarily polyamide, are transformed into consistent, continuous profiles. The process begins with virgin or compounded polymer in granular form, which is fed into the extruder's hopper. As the material progresses through the barrel via the rotating screw, it is subjected to intense heat from external heaters and immense internal shear forces, causing it to melt into a homogeneous, viscous fluid. This molten polymer is then forced under high pressure through a precisely engineered extrusion die, which imparts the specific cross sectional shape of the thermal break strip. Immediately after exiting the die, the hot profile enters a calibrated cooling tank, typically a water bath, where it solidifies while maintaining its dimensional accuracy. The synchronization between the extruder's output rate and the puller's speed is critical; it ensures consistent wall thickness and prevents warping or stretching. Our deep expertise, cultivated since 2006, allows us to master this entire process, fine tuning parameters such as melt temperature, screw speed, and cooling rates specifically for our advanced polyamide formulations. This ensures the resulting strips exhibit optimal mechanical strength, excellent thermal insulation properties, and the dimensional stability required for seamless integration into aluminum fenestration systems worldwide. Through Polywell, we offer not just the strips but the complete extrusion technology, providing a holistic solution that guarantees quality from raw material to finished product.