Silicone Tube Extrusion Machine Process Flow
Time：
2017-10-15
After extrusion, silicone products pass suspended through a front‑end high‑temperature quartz‑tube curing tunnel to achieve preliminary curing and rapid shaping; they then proceed through a rear curing tunnel for thorough vulcanization, thereby resolving production and quality challenges that traditional silicone rubber extrusion‑curing processes have long been unable to address. For example, thin‑walled tubes extruded and cured maintain perfect roundness with no deformation; large‑diameter and thick‑walled silicone tubes exhibit surfaces free of compression marks; and complex‑sectional, irregularly shaped silicone strips can be produced with ease. Moreover, this process delivers excellent extrusion‑curing results across a wide range of soft and hard silicone rubbers with shore hardnesses from 30 to 70 degrees. The curing tunnel features stainless steel inner and outer layers, ensuring prolonged heat retention, energy efficiency, and overall…
After extrusion, silicone products pass through a pre‑curing zone equipped with high‑temperature quartz heating to achieve preliminary curing and rapid shaping. They then proceed through a post‑curing section for thorough crosslinking, addressing production and quality challenges that traditional silicone rubber extrusion‑curing processes have long been unable to resolve. For example, thin‑walled tubes exhibit excellent roundness with no deformation; large‑diameter and thick‑walled silicone hoses show no surface indentations; and complex‑shaped silicone strips with diverse cross‑sections can be produced with superior precision. This process delivers outstanding results across a wide range of hardnesses, from 30 to 70 Shore A, while maintaining consistent extrusion‑curing performance. The curing tunnel features stainless steel inner and outer layers, ensuring prolonged heat retention, energy efficiency, and a clean, aesthetically pleasing environment—free from contamination. Quartz heating elements enable efficient utilization of both high temperatures and radiant heat, shortening curing times and boosting thermal efficiency. Once the tunnel reaches the set temperature, it automatically switches to constant‑temperature control, at which point one heating zone is deactivated to further reduce power consumption. The system is suitable for manufacturing silicone tubes, strips, custom‑shaped profiles, foamed tubing, and more, offering short curing cycles, high productivity—yielding approximately 60–180 kg per hour—and user‑friendly operation.
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Hebei Shuangda Rubber Machinery Co., Ltd.
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