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Spinneret for melt spinning macine
FYI
1PCS
China
By TT or LC
APPLICATION:
Spinneret also called spinning cap
The role of the spinneret I is to convert polymer melt or solution into a specific cross-sectional fine flow through micropores, and solidify it into fibers through a solidification medium.
Differences Application Area :
1. Melt spinning: used for the production of synthetic fibers such as polyester and nylon, without the need for solvents, directly extruded through high-temperature melt.
2. Wet/dry spinning: Wet spinning requires a coagulation bath (such as acrylic fiber), dry spinning relies on solvent evaporation (such as spandex), and spinnerets need to adapt to different chemical environments.
Summary: The spinneret controls the rheological behavior of high polymers through precise micropores, and its design and process directly affect fiber properties and production efficiency. It is a key component in the manufacturing of synthetic fibers and meltblown fabrics (such as mask filter layers).
Spinneret is a core component in chemical fiber production, and its parameters directly affect the quality and efficiency of fiber forming
Main Specification is as belows
1..Diameter
The aperture determines the diameter of the extruded melt stream and directly affects the fineness of the fibers. For example, the aperture of the melt blown fabric spinneret is usually between Φ 0.20~Φ 0.25mm, while the aperture for spinning polyester is between 0.25~0.6mm.
2. Hole shape
The pore shape controls the cross-sectional shape of fibers, and common pore shapes include circular and irregular cross-sections. For example, the requirement for processing accuracy is relatively high for the use of irregular hole spinning plates in dry spinning.
3. Hole arrangement method
The arrangement of holes (such as uniform or spiral arrangement) affects the uniformity of melt distribution and the cooling conditions of fibers. A reasonable arrangement can ensure uniform compression of the spinning plate and reduce the impact of strength weakening.
4. Number of holes:
The number of holes determines the yield of the veneer, while ensuring that the distribution of the melt does not reduce the quality. For example, the number of holes in a rectangular spinneret is usually between 30 and 300 holes.
5. Outer diameter and thickness:
The outer diameter and thickness of the spinneret are determined based on the number of holes, arrangement, and working conditions. For example, the outer diameter of long filament spinnerets is commonly 50mm, 52mm, 64mm, etc., while the outer diameter of spinnerets for spinning short fibers and cord yarns is usually above 160mm.
6. Surface roughness:
The surface roughness of the nozzle affects the continuity and stability of the melt flow. For example, the roughness of guide hole chamfers is usually N5-N7, while the roughness of micropores is N1-N3.
7. Materials and Processing Accuracy:
The material of the spinneret needs to have pressure resistance, corrosion resistance, and sufficient mechanical strength. For example, the material of melt blown cloth spinneret is usually 4Cr13 with a hardness of HRC28~32.
Summary: The main parameters of a spinneret include aperture, aperture shape, aperture arrangement, number of apertures, outer diameter and thickness, surface roughness, and material and processing accuracy. These parameters collectively determine the fiber
APPLICATION:
Spinneret also called spinning cap
The role of the spinneret I is to convert polymer melt or solution into a specific cross-sectional fine flow through micropores, and solidify it into fibers through a solidification medium.
Differences Application Area :
1. Melt spinning: used for the production of synthetic fibers such as polyester and nylon, without the need for solvents, directly extruded through high-temperature melt.
2. Wet/dry spinning: Wet spinning requires a coagulation bath (such as acrylic fiber), dry spinning relies on solvent evaporation (such as spandex), and spinnerets need to adapt to different chemical environments.
Summary: The spinneret controls the rheological behavior of high polymers through precise micropores, and its design and process directly affect fiber properties and production efficiency. It is a key component in the manufacturing of synthetic fibers and meltblown fabrics (such as mask filter layers).
Spinneret is a core component in chemical fiber production, and its parameters directly affect the quality and efficiency of fiber forming
Main Specification is as belows
1..Diameter
The aperture determines the diameter of the extruded melt stream and directly affects the fineness of the fibers. For example, the aperture of the melt blown fabric spinneret is usually between Φ 0.20~Φ 0.25mm, while the aperture for spinning polyester is between 0.25~0.6mm.
2. Hole shape
The pore shape controls the cross-sectional shape of fibers, and common pore shapes include circular and irregular cross-sections. For example, the requirement for processing accuracy is relatively high for the use of irregular hole spinning plates in dry spinning.
3. Hole arrangement method
The arrangement of holes (such as uniform or spiral arrangement) affects the uniformity of melt distribution and the cooling conditions of fibers. A reasonable arrangement can ensure uniform compression of the spinning plate and reduce the impact of strength weakening.
4. Number of holes:
The number of holes determines the yield of the veneer, while ensuring that the distribution of the melt does not reduce the quality. For example, the number of holes in a rectangular spinneret is usually between 30 and 300 holes.
5. Outer diameter and thickness:
The outer diameter and thickness of the spinneret are determined based on the number of holes, arrangement, and working conditions. For example, the outer diameter of long filament spinnerets is commonly 50mm, 52mm, 64mm, etc., while the outer diameter of spinnerets for spinning short fibers and cord yarns is usually above 160mm.
6. Surface roughness:
The surface roughness of the nozzle affects the continuity and stability of the melt flow. For example, the roughness of guide hole chamfers is usually N5-N7, while the roughness of micropores is N1-N3.
7. Materials and Processing Accuracy:
The material of the spinneret needs to have pressure resistance, corrosion resistance, and sufficient mechanical strength. For example, the material of melt blown cloth spinneret is usually 4Cr13 with a hardness of HRC28~32.
Summary: The main parameters of a spinneret include aperture, aperture shape, aperture arrangement, number of apertures, outer diameter and thickness, surface roughness, and material and processing accuracy. These parameters collectively determine the fiber
