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What is an EPDM rubber vulcanization production line?

Time：

2020-08-23

EPDM rubber products are ubiquitous in our daily lives—for example, building door and window seals, automotive sealing strips, and high-pressure hoses used in vehicles are all made from EPDM. During production, these items typically undergo extrusion molding using an extruder, followed by vulcanization in a vulcanizing unit. Consequently, the production line dedicated to manufacturing such products is referred to as an EPDM vulcanization line. However, not all EPDM vulcanization lines are identical; for instance, when producing sealing strips, we usually employ a single extruder for extrusion molding, after which the parts are cured in a hot-air vulcanizing oven.

EPDM rubber products are ubiquitous in our daily lives—for example, building door and window seals, automotive sealing strips, and high‑pressure hoses used in vehicles are all made from EPDM. During production, these items typically undergo extrusion molding using an extruder, followed by vulcanization in a vulcanizing oven; thus, the production line for such products is referred to as an EPDM vulcanization line. Not all EPDM vulcanization lines are identical: for instance, when manufacturing sealing strips, a single extruder is usually employed to form the profile, after which the product is cured in a hot‑air vulcanizing chamber to yield the finished item. In contrast, producing three‑layer composite sealing strips requires two extruders for co‑extrusion, with subsequent vulcanization in a vulcanizing oven; additional equipment such as punching machines, strip‑cutting machines, and forming presses are also needed for downstream processing. Consequently, even though both are sealing strips, their respective production processes and required machinery differ significantly. As for rubber hose extrusion, the specific production method must be tailored to the hose’s type: some single‑layer hoses share a similar process with sealing strips, while others necessitate pressurized vulcanization. Take automotive hoses—particularly those with layered, non‑circular cross‑sections—as an example. Their manufacture begins with an extruder shaping the inner layer, followed by a puller that feeds the extrudate to a knitting machine for weaving the reinforcement yarns. The finished hose is then conveyed to a second extruder equipped with a T‑die for further processing, thereby establishing the basic structure of the hose. At this stage, the hose undergoes water cooling and immersion in a release fluid, after which a cutting machine trims it to the desired length. The raw blanks are then fitted into shaping molds and subjected to vulcanization in a vulcanizing tank, yielding the final product.

Hebei Shuangda Rubber & Plastics Machinery Co., Ltd. is a modern enterprise integrating research and development, manufacturing, and sales of complete sets of extrusion equipment for rubber, silicone, and plastics. The company’s main products include rubber extruders, rubber hose extrusion lines, three‑layer composite sealing strip extrusion lines, silicone sealing strip production lines, plastic sealing strip production lines, plastic profile production lines, plastic pipe production lines, elastomer extruders, and other extrusion equipment, as well as production machinery for engineering seals, automotive seals, wire and cable applications, air‑conditioning hoses, braided hoses, automotive hoses, waterstop strips, and related products.

Consultation Hotline: Manager Jiang, 13463938789