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Pelletizing (Cold Cut and Hot Cut)
- Commodity name： Pelletizing (Cold Cut and Hot Cut)
Product Details
- 产品描述
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The specialized non-stop screen changer for pelletizing (hot cut and cold cut) is selected based on the characteristics of the raw materials used and the process requirements, such as die-face hot cut, underwater hot cut (water cut), and strand cold cut processes.
(1) Underwater Hot Cut: Generally used for large and extra-large petrochemical raw material pelletizing or modified material pelletizing. Due to the large filtration area, high melt pressure, high temperature, and high output, ordinary sealing methods cannot meet the requirements and are prone to leakage. We adopt a screen changer with an elastic sealing system and automatic compensation, where the sealing pressure increases proportionally with the rise in extruder head melt pressure (directly proportional), ensuring zero material leakage. It allows for convenient and quick screen changes and has an exceptionally long service life.
(2) Strand Cold Cut Process: Typically used for small-scale pelletizing, this process employs a multi-screen reciprocating filtration screen changer. Equipped with pressure stabilization and automatic exhaust mechanisms, it enables screen changes without stopping production, avoiding strand breakage and ensuring smooth operation. The pellets produced are smooth and free of bubbles. The die and screen changer are integrated into a single design, making it rational, economical, and cost-effective!
(3) Die-Face Hot Cut Process: For PVC raw materials, a dual-position quick-change screen technology is used. The die head and screen changer are integrated into a single design, with a more rational flow channel structure and distribution. This ensures no stagnation of melt, more uniform flow velocity and pellet size, reduced flow channel length with minimal resistance, and higher output. For other raw materials with good stability, apart from this screen changer, the type (2) structure can also be used.
The specialized non-stop screen changer for pelletizing (hot cut and cold cut) is selected based on the characteristics of the raw materials used and the process requirements, such as die-face hot cut, underwater hot cut (water cut), and strand cold cut processes.
(1) Underwater Hot Cut: Generally used for large and extra-large petrochemical raw material pelletizing or modified material pelletizing. Due to the large filtration area, high melt pressure, high temperature, and high output, ordinary sealing methods cannot meet the requirements and are prone to leakage. We adopt a screen changer with an elastic sealing system and automatic compensation, where the sealing pressure increases proportionally with the rise in extruder head melt pressure (directly proportional), ensuring zero material leakage. It allows for convenient and quick screen changes and has an exceptionally long service life.
(2) Strand Cold Cut Process: Typically used for small-scale pelletizing, this process employs a multi-screen reciprocating filtration screen changer. Equipped with pressure stabilization and automatic exhaust mechanisms, it enables screen changes without stopping production, avoiding strand breakage and ensuring smooth operation. The pellets produced are smooth and free of bubbles. The die and screen changer are integrated into a single design, making it rational, economical, and cost-effective!
(3) Die-Face Hot Cut Process: For PVC raw materials, a dual-position quick-change screen technology is used. The die head and screen changer are integrated into a single design, with a more rational flow channel structure and distribution. This ensures no stagnation of melt, more uniform flow velocity and pellet size, reduced flow channel length with minimal resistance, and higher output. For other raw materials with good stability, apart from this screen changer, the type (2) structure can also be used.
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