Novel spinning component
A spinning component and spinning technology, applied in the direction of spinneret assemblies, textiles and papermaking, etc., can solve problems such as increasing costs, reducing equipment utilization, and limiting production continuity, so as to prevent air bubbles and reduce broken filaments Effect
Inactive Publication Date: 2014-08-27
SHANGHAI KNP CHEM +3
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Problems solved by technology
[0003] (1) The vacuum pump suction device is used to extract the solvent vapor in the screw and the melt cavity. The defect is that the oligomers in the melt have a low melting point and are volatile, which will block the suction port, reduce the utilization rate of the equipment, affect the production and increase the cost.
[0004] (2) A pneumatic device is added to the square deformation area under the spinneret assembly. The disadvantage is that high-pressure gas is required to maintain the pressure, the energy consumption is too large, and the continuity of production is greatly restricted, resulting in high production costs.
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0018] The material of the headgear and the distribution plate is stainless steel; the material of the spinneret is polytetrafluoroethylene polymer material; the length of a section of the spinneret embedded in the spinning headgear is 20mm, and the length protruding from the headgear surface is 50mm; the spinning solution is PVA, with a solid content of 60%; the spinning cooling liquid is water, and the temperature is 10°C; the air bubbles of the raw silk are 2 / 100m.
Embodiment 2
[0020] The material of the headgear and the distribution plate is stainless steel; the material of the spinneret is polytetrafluoroethylene polymer material; the length of a section of the spinneret embedded in the spinning headgear is 20mm, and the length protruding from the headgear surface is 65mm; the spinning solution is pp, with a solid content of 20%; the spinning cooling liquid is water, and the temperature is 5°C; the air bubbles of the raw silk are measured: 1 piece / 100m.
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The invention discloses a novel spinning component which can save energy better and make the production operation convenient. The novel spinning component is provided with a spinneret, a distribution plate and a retaining cap, wherein the spinneret has a two-section structure, of which one section is embedded into the retaining cap and connected with the distribution plate and the other section protrudes out of the retaining cap and extends into spin cooling liquid to spin under the spin cooling liquid. The novel spinning component has the following advantages that: (1) solvent-containing melt spins under the cooling liquid level through the spinneret section protruding out of the retaining cap surface, so slivers can be prevented from producing bubbles and the breakage of the slivers can be reduced; and (2) the spinning component does not increase special processes or devices, saves energy, reduces consumption and lowers production cost.
Description
technical field [0001] The invention relates to a spinning component for chemical fiber melt extrusion spinning, in particular to a melt spinning component for high-temperature evaporation of a solvent. Background technique [0002] For the melt spinning technology containing solvent in the solution, in order to prevent the foaming phenomenon of extrusion from the spinneret, the existing technologies to improve the spinning defects are as follows. [0003] (1) The vacuum pump suction device is used to extract the solvent vapor in the screw and the melt cavity. The disadvantage is that the oligomers in the melt have a low melting point and are volatile, which will block the suction port, reduce the utilization rate of the equipment, affect the production and increase the cost. [0004] (2) A pneumatic device is added to the deformation area below the spinneret assembly. The disadvantage is that high-pressure gas is required to maintain the pressure, the energy consumption is ...
Claims
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IPC IPC(8): D01D4/00D01D4/02
Inventor 张杰倪建华郑伟王依民何唯平
Owner SHANGHAI KNP CHEM