Heat preservation plate in cross air blow device

Abstract

The invention relates to a heat preservation plate in a cross air blow device. The heat preservation plate comprises a heat preservation plate body, wherein the length of the heat preservation plate body is matched with the width of the cross air blow device, the heat preservation plate body is internally provided with a plurality of grooves, the cross sections of the groove are semi-circular, the sizes of the grooves are matched with the diameters of spinneret plates, and the quantity of the grooves correspond to that of the spinneret plates. The heat preservation plate is simple in structure, convenient to use, and low in cost. In the high-speed coiling of spinning fine denier or superfine denier polyester drawn yarn, the heat preservation plate plays a part in stably producing, reducing disconnecting heads, reducing waste yarns, reducing the evenness uneven rate of products, improving the M rate of coloration and the like, and particularly can effectively solve the broken filament of the special-shaped polyester drawn yarn in the process of production, so that the product quality can be improved.

Description

technical field [0001] The invention relates to the technical field of chemical fiber spinning, in particular to a thermal insulation board in a side blowing device. Background technique [0002] The development of new chemical fiber filament products has shown a trend towards high value-added differentiated fibers, which puts forward higher requirements for the original side blowing device. The side blowing cooling device that was popular before can no longer meet the requirements of filament The product gradually improves the process requirements. After the melt is spun from the spinning head, it releases a large amount of solidification heat into the surrounding air. The heat released causes the fine streams of melt to solidify into fibers. During the cooling and solidification process, when spinning special-shaped polyester filaments, due to the influence of the special shape, the specific surface area of ​​the melt stream increases, and the primary fiber is easier to d...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: to provide a method that can effectively solve the problem that the primary fiber is easy to dissipate heat when the side blowing device spins special-shaped yarns, the single yarn fineness is small, the specific surface area is large, the frictional resistance between the yarn and the air increases, and the cooling speed becomes faster. , resulting in increased spinning tension, a significant upward shift in the freezing point, and a shortened outlet deformation zone for the insulation board in the side blowing device

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