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Manufacturing method of polyester spunbonded needled non-woven filter material

A filter material and manufacturing method technology, applied in the direction of non-woven fabrics, textiles and papermaking, filament/thread forming, etc., can solve the problems of limited fiber entanglement, large product thickness, low filtration efficiency, etc. The effect of high density and high filtration precision

Pending Publication Date: 2022-03-25
FOSHAN S L P SPECIAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under the process of relatively low needle punching density and small needle punching depth, the degree of fiber entanglement of spunbonded needle punched nonwovens is limited, the product has a large thickness and high bulkiness, so the pore size is large and the filtration efficiency is low

Method used

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  • Manufacturing method of polyester spunbonded needled non-woven filter material
  • Manufacturing method of polyester spunbonded needled non-woven filter material
  • Manufacturing method of polyester spunbonded needled non-woven filter material

Examples

Experimental program
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Embodiment Construction

[0046] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0047] The manufacture method process flow of the high-density polyester spun-bonded needle-punched nonwoven filter material of the present invention is as follows figure 1 shown.

[0048] PET (polyethylene terephthalate) slices are thrown into the silo 1 and conveyed through the rotary valve, and then fall into the pre-crystallizer 2.

[0049] In the pre-crystallizer 2, the PET slices are in a boiling state under the blowing of hot air, and the slices collide with each other to prevent sticking. The slices are heated in the pre-crystallizer 2, the degree of crystallization increases, the water content decreases, and the pre-crystallization temperature is 140-160°C...

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PUM

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Abstract

The polyester spun-bonded needle-punched non-woven fabric product produced by the manufacturing method of the polyester spun-bonded needle-punched non-woven filtering material has the advantages of high density, high filtering precision, no fluff, good mechanical property and the like. According to the invention, the PETG fiber with high shrinkage performance and the conventional PET fiber are produced through the same spinneret plate through bi-component spinning, and the density of the non-woven fabric is improved through the high shrinkage of the PETG fiber, so that the non-woven fabric has high density, small aperture, high filtering precision, large binding force between fibers and good mechanical property of the product; the surface is not easy to fluff.

Description

technical field [0001] The invention belongs to the field of non-woven fabric production, and in particular relates to a method for manufacturing a high-density polyester spun-bonded needle-punched non-woven filter material. 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 process is as follows: [0003] After the polymer slices are put into the hopper, they are fed into the screw extruder. The screw has a heating function. The slices are melted and extruded in the screw. The filtered melt is transported to the spinning assembly by the metering pump according to a certain flow rate. The filament assembly is equipped with a spinneret with ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H3/011D04H3/03D04H3/105D01D5/28
CPCD04H3/011D04H3/03D04H3/105D01D5/28
Inventor 李杰周思远陈让军肖红军李文亮
Owner FOSHAN S L P SPECIAL MATERIALS
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