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Method and equipment for adding liquid/solid additive at specific position of melt-blown fiber

A technology of additives and melt-blown method, which is applied in the direction of fiber chemical characteristics, dye addition in spinning solution, melt-spinning method, etc., can solve the problems of loss of mechanical strength performance, improper control, large machine footprint, etc., and achieve a reduction in process Cost, Ease of Implementation, Effectiveness for Enhanced Effects

Active Publication Date: 2022-01-28
上海邀加科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The whole process is cumbersome, the machine occupies a large area, it is not easy to improve on the current melt-blown spinning equipment, and it is difficult to promote
Moreover, the preparation method of this patent can only be made into fiber materials with a skin-core structure. Improper control of the two feeding systems may easily cause gaps between the skin and core, resulting in significant loss of mechanical strength.
[0007] In view of this, the present invention aims at the deficiencies of the prior art, and proposes a method and equipment for adding liquid / solid additives in the melt-blown nonwoven process, which solves the problem that additives affect the cost and mechanical properties of materials, and can directly Achieved in the meltblown process, independent of fiber structure

Method used

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  • Method and equipment for adding liquid/solid additive at specific position of melt-blown fiber
  • Method and equipment for adding liquid/solid additive at specific position of melt-blown fiber
  • Method and equipment for adding liquid/solid additive at specific position of melt-blown fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] use as Figure 7 The equipment shown is a single-component melt-blown system, and the outlet pipe 516 of the additive box 515 is provided at the melt-blown nozzle 007, and the additive box is equipped with a high-pressure atomization device.

[0057] Melt blown nonwovens are prepared by direct method, such as Figure 7 :

[0058] (1) Slices of polypropylene high molecular polymer with a melt index MFI of 1500-1600 g / 10 minutes (melting point 173°C) are melted at a high temperature of 275±10°C in the feed bin 001, and extruded through a screw Machine 002 and gear metering pump 004 extrude polypropylene melt;

[0059] (2) The polymer melt passes through the hanger-type die device 005, the distribution plate 006, and the melt-blown nozzle 007 in sequence. When the polymer is extruded from the melt-blown nozzle with a diameter of 250 microns, the nano Silver particles (with a particle size range of 1-20nm) 014 are discharged from the additive box 515 of the atomization d...

Embodiment 2

[0063] use as Figure 8 The equipment shown is a combination of the liquid supply system of the single-component melt-blown machine and the spinneret system of the two-component melt-blown machine. The core-shell two-component distribution plate 006 is used, and there is a Outlet tube 716 of additive cartridge 715 .

[0064] Melt-blown nonwovens are prepared by distribution plate method, such as Figure 8 :

[0065] (1) Slices of polypropylene high molecular polymer with a melt index MFI of 1500-1600 g / 10 minutes (melting point 173°C) are melted at a temperature of 275±10°C in the feed bin 001, and extruded through a screw Machine 002 and gear metering pump 004 extrude polypropylene melt;

[0066] (2) The core-shell two-component distribution plate design and needle design are adopted in the spinning unit 008. The polypropylene melt passes through the hanger-type die head device 005 and the distribution plate 006 in turn, and enters through the needle after the pipeline of ...

Embodiment 3

[0070] use as Figure 7 The equipment shown is a single-component melt-blown system, and the outlet pipe 516 of the additive box 515 is provided at the melt-blown nozzle 007, and the additive box is equipped with a high-pressure atomization device.

[0071] Melt blown nonwovens are prepared by direct method, such as Figure 7 :

[0072] (1) Slices of polypropylene high molecular polymer with a melt index MFI of 1500-1600 g / 10 minutes (melting point 173°C) are melted at a high temperature of 275±10°C in the feed bin 001, and extruded through a screw Machine 002 and gear metering pump 004 extrude polypropylene melt;

[0073] (2) The high polymer melt passes through the hanger type die head device 005, the distribution plate 006, and the melt blown nozzle 007 successively, and the outer diameter formed by the high polymer from the three-lobed melt blown nozzle (the tip of the three leaves of the nozzle is 300 microns, The diameter formed at the bottom of the three leaves is ab...

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Abstract

The invention discloses a method and equipment for adding a liquid / solid additive at a specific position of a fiber in a melt-blown non-woven process, and relates to the field of chemical fiber manufacturing. When a high polymer is extruded from a melt-blowing nozzle and is not or is pulled into filaments by high-speed airflow or passes through a distribution plate pipeline, an additive is added, so that the additive moves from the outer surface of a fiber to the surface layer or the tail end of the fiber in the process that the high polymer melt is pulled by the high-speed airflow, or enters the surface layer or the tail end of the fiber through a distribution plate, fibers of an outer cyclic additive structure or a tip additive structureare formed. The additive is aggregated and added in a specific area, so that the influence of the additive on spinning forming and the influence on the material strength performance are reduced, the cost is reduced, and meanwhile, the effect brought by the additive is remarkably improved.

Description

[0001] This application is a divisional application of Chinese Invention Patent Application No. 202010906288.4 with an application date of September 1, 2020, and the title of the invention is "Method and Equipment for Adding Liquid / Solid Additives in the Meltblown Nonwoven Process". technical field [0002] The invention relates to the field of chemical fiber manufacturing, in particular to a method and equipment for adding liquid / solid additives to specific positions of melt-blown fibers. Background technique [0003] The melt-blown method is to blow the polymer melt through high-speed and high-temperature airflow, so that the melt stream is extremely stretched to form ultra-fine fibers, and then condensed on the porous drum or web forming curtain to form a fiber web, and then bonded to itself. A production technique in which nonwoven fabrics are made by bonding or thermal bonding to strengthen them. The products produced by melt-blown non-woven fabrics have the advantages ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D1/06D01D5/08D01D5/098D01D5/34D01D5/253D01F1/02D01F1/10D01F1/07D01F1/06D04H1/56D04H1/541
CPCD01D5/08D01D5/0985D01D5/34D01F1/02D01D1/065D01D5/253D01F1/103D01F1/10D01F1/07D01F1/06D04H1/56D04H1/5412
Inventor 不公告发明人
Owner 上海邀加科技有限公司