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Butyl rubber extruder

The butyl rubber extruder is specifically designed to accommodate the unique properties of butyl rubber. Because butyl rubber is both soft and highly adhesive, traditional forced-feed dies often cause the material to surge unpredictably, entering the gaps between rotating bearings and, over time, leading to bearing damage. To address this issue, we have developed a dual‑arm conjugate feed extruder. This innovative feed system, paired with the extruder’s barrel and screw, enables the machine to handle block‑shaped rubber. Once the butyl rubber enters the extruder barrel, it undergoes shearing, compression, and other forms of processing by the extruder screw, after which…

2020

09-30

The process and operating procedures of rubber filter extruders

For thin-walled parts or products with stringent quality requirements, it is necessary to remove impurities from the rubber compound to prevent adverse effects on airtightness and tear resistance. During the filtration process, sulfur and ultra‑fast accelerators must not be added to the compound to avoid scorching when the material temperature rises excessively. Prior to filtration, the compound should be hot‑milled on an open mill to enhance its thermoplasticity. The hot‑milling and feeding procedures are identical to those used in standard extruders. As for the temperatures of the various sections of the filter machine: the barrel should be maintained at 40–50°C, the die head at 60–90°C, and the filter plate at 60–80°C. After filtration, the temperature of NR compound must not exceed 130°C; for compounds containing 30% SBR, the temperature should also remain below 140°C. Following filtration, the compound…

2020

10-11

The Process and Operating Procedures of Rubber Filter Presses

For thin-walled products or those with stringent quality requirements, it is essential to remove impurities from the rubber compound to prevent adverse effects on the product’s air tightness and tear resistance. During the filtration process, sulfur and ultra‑fast accelerators must not be added to the compound to avoid scorching when the compound temperature rises excessively. Prior to filtration, the compound should be hot‑mixed on an open mill to enhance its thermoplasticity. The hot‑mixing and feeding procedures are identical to those used in standard extruders. As for the temperatures of the various sections of the filter machine: the barrel should be maintained at 40–50°C, the die head at 60–90°C, and the filter plate at 60–80°C. After filtration, the temperature of NR compound must not exceed 130°C; for compounds containing 30% SBR, the temperature should also remain below 140°C. Following filtration, the compound…

2020

10-11

Our company has successfully obtained certification for the three major management systems: ISO 9001, ISO 14001, and ISO 45001.

Hebei Shuangda Rubber and 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 extrusion lines, plastic pipe extrusion 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.

2018

07-31

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