The process and operating procedures of rubber filter extruders
Time：
2020-10-11
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…
For thin-walled parts or products with stringent quality requirements, it is essential to remove impurities from the rubber compound to prevent adverse effects on gas 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 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 conventional extruders. Gel filtration machine Temperatures in each section are as follows: the barrel is 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 the NR compound does not exceed 130°C; for compounds containing 30% SBR, the temperature remains below 140°C. The filtered compound can be sheeted on an open mill to reduce its temperature, after which sulfur and accelerators are added according to process requirements.
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