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The importance of the melt spinning spinneret on the melt spinning production line and the design and selection of spinneret shape, material, thickness and other parameters.

The main function of the spinneret in the production process of spunbonded nonwovens is to convert the viscous polymer melt or melt through the micropores into a thin stream with a specific cross-sectional shape and solidify by blowing cooling or solidification bath. To form threads. The melt spinning spinneret is the core component of the spinning device, and the quality of the finished silk obtained by using different melt spinning spinnerets is very different. Due to the different production process requirements and the inherent characteristics of fiber forming and the different drafting ratios, the design of the spinneret cannot be applied to the existing calculation formula and can only be constantly explored and improved in the trial production process based on experience. The prerequisites of the existing spinning equipment restrict the requirements of the spinning process, so the design and selection of the spinneret are particularly important.