Manufacturing equipment of polyester spunbonded non-woven fabric with high filtering precision and method of equipment

Abstract

The invention discloses manufacturing equipment of polyester spunbonded non-woven fabric with high filtering precision and a method of the equipment. The equipment comprises a mixing tank, a crystallizer, a drying tower, a screw extruder, a first spinning box, a second spinning box and a third spinning box; water-soluble polyester slices and partial polyester slices pass through the mixing tank, the crystallizer, the drying tower, the screw extruder and the second spinning box in sequence, and spinneret orifices of a spinneret plate of the second spinning box are of an annular structure; another part of polyester slices pass through the crystallizer, the drying tower, the screw extruder, the first spinning box and the third spinning box in sequence; the second spinning box, the first spinning box and the third spinning box are all connected with a drafting nozzle, and the drafting nozzle is connected with a web forming device, a spunlace reinforcing device, an alkaline liquor immersiontreatment device, a washing device and a drying device in sequence. Through a multi-box spinning technology, the upper and lower face layers of the non-woven fabric have good mechanical performance,and the middle layer has good filtering precision.

Description

technical field [0001] The invention relates to a high filtration precision polyester spun-bonded non-woven fabric manufacturing equipment and a method thereof, belonging to the technical field of spun-bonded non-woven fabric production. Background technique [0002] The spunbonding method, also known as the spinning method, is the most important and widely used method in nonwovens. It uses the principle of chemical fiber spinning to lay continuous filament fibers into a web during the polymer spinning process, and the web is reinforced by mechanical, chemical or thermal methods to form a nonwoven fabric. The specific production process of polyester (polyester) spunbonded nonwovens is as follows: [0003] The polyester chips are conveyed in the large silo, conveyed through the rotary valve into the pre-crystallization chamber for pre-crystallization, and the pre-crystallization chips enter the drying tower for drying. After drying, the chips whose water content meets the r...

AI Technical Summary

Problems solved by technology

Due to the thick fiber and low specific surface area, its single fiber filtration efficiency is low, and the filtration efficiency of non-woven fabrics composed of such fibers is low

[0007] Moreover, due to the higher viscosity of polyester chips, the melting point is higher

Therefore, the existing melt-blown process that can produce polypropylene microfibers cannot produce polyester melt-blown nonwovens

Therefore, in the field of high-precision filtration, there is no corresponding product for polyester spunbond products

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