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PVC compounds can be formulated,using mang different type of additives which makes PVC has been so successful as a commodity thermoplastic, from medical applications such as tubing and blood bags to long life applications such as window frames and rainwater goods.Flexible PVC compounds usually called PVC-P formulated with plasticizers which help give them “rubber like” properties.Rigid PVC compounds usually called PVC-U without plasticizer: high hardness, excellent mechanical properties, andhigh melting point.
PVC compounds contains other materials like stabilizers, additives, fillers, reinforcements, and flame retardants, must be intensively mixed in the compounding machinery.The dispersive and distributive mixing is critical, and all in compliance with well defined temperature limits.
Compounding PVC involves several processing challenges, requiring significant attentions to temperature sensitivity, filler levels, volume and volatile components.Efficient temperature control is particularly important because PVC degrades when exposed to higher mixing temperatures.Furthermore, precise temperature control not only enhances production rates but also reduces costs by reducing the reliance on heat stabilizers.Opertions involved in the process of pvc compounding and pelletizing
1.Feed the PVC material into the high-speed mixer, and the screw loader to transport the mixed powder into the first-stage parallel co rotating twin-screw extruder.
2.After efficent plasticization and homogenation on the twin-screw extruder at a temperature of 150-160°C,the melted compounds directly enters the large-diameter second-stage single-screw extruder, without compressed by the die head.
3.The single-screw extruder complete the extrusion granulation at low screw speed, high pressure, and cooling conditions. The temperature of melting pvc compounds should drop to 120-140°C before entering the air-cooled hot face pelletizing system.
4. After pelletizing, cooled by the secondary air-cooled cyclone separator,the granules temperature can be dropped to 35°C-40°C . After the air-cooled vibrating sieve, the granules temperature drops below room temperature to be sent to the final product silo for packaging.
Name: JY72-180 two stage extruder
Output：500-800kg per hour
PVC compounds can be formulated,using mang different type of additives which makes PVC has been so successful as a commodity thermoplastic, from medical applications such as tubing and blood bags to long life applications such as window frames and rainwater goods.Flexible PVC compounds usually called PVC-P formulated with plasticizers which help give them “rubber like” properties.Rigid PVC compounds usually called PVC-U without plasticizer: high hardness, excellent mechanical properties, andhigh melting point.
PVC compounds contains other materials like stabilizers, additives, fillers, reinforcements, and flame retardants, must be intensively mixed in the compounding machinery.The dispersive and distributive mixing is critical, and all in compliance with well defined temperature limits.
Compounding PVC involves several processing challenges, requiring significant attentions to temperature sensitivity, filler levels, volume and volatile components.Efficient temperature control is particularly important because PVC degrades when exposed to higher mixing temperatures.Furthermore, precise temperature control not only enhances production rates but also reduces costs by reducing the reliance on heat stabilizers.Opertions involved in the process of pvc compounding and pelletizing
1.Feed the PVC material into the high-speed mixer, and the screw loader to transport the mixed powder into the first-stage parallel co rotating twin-screw extruder.
2.After efficent plasticization and homogenation on the twin-screw extruder at a temperature of 150-160°C,the melted compounds directly enters the large-diameter second-stage single-screw extruder, without compressed by the die head.
3.The single-screw extruder complete the extrusion granulation at low screw speed, high pressure, and cooling conditions. The temperature of melting pvc compounds should drop to 120-140°C before entering the air-cooled hot face pelletizing system.
4. After pelletizing, cooled by the secondary air-cooled cyclone separator,the granules temperature can be dropped to 35°C-40°C . After the air-cooled vibrating sieve, the granules temperature drops below room temperature to be sent to the final product silo for packaging.
Name: JY72-180 two stage extruder
Output：500-800kg per hour
