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Filtering material for mask filtering layer and mask

A filter layer and filter material technology, applied in the field of sanitary products, can solve the problems of increased exhalation and inhalation resistance, difficulty in removing tiny particles, transmission or inhalation into the human body, etc., achieve low exhalation and inhalation resistance, and inhibit bacteria The effect of propagation and propagation, enhancing the filtering effect

Active Publication Date: 2015-11-18
厦门百美特生物材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, particles that are larger than the gaps between the fibers of the PP filter material and smaller than 0.5um are difficult to be filtered out
Therefore, although the filtration efficiency of 0.075um NaCl aerosol particles emitted by the aerosol test source specified in the test standard (agglomerated into 0.3um particles during the flight, the most difficult to remove in theory) reaches more than 90%, it is still difficult to remove The most harmful tiny particles that are the size of the filter material gap
Reducing the size of the gap between the fibers can increase the effect of filtering smaller particles, but it will inevitably increase the resistance of exhalation and inhalation, resulting in difficulty in breathing for the wearer
[0004] In addition, although standard mask filter material can make most bacteria impenetrable, it will reside on the surface of the filter material (bacteria in the ambient air reside on the outside of the filter material, while bacteria in the air exhaled by the human body reside on the surface of the filter material). At the same time, due to the relatively high temperature of the air exhaled by the human body, bacteria can easily multiply on the surface of the filter material in a short period of time, and may spread in the air or be inhaled into the human body with inhalation or exhalation. resulting in possible adverse effects

Method used

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  • Filtering material for mask filtering layer and mask
  • Filtering material for mask filtering layer and mask
  • Filtering material for mask filtering layer and mask

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: Preparation of activated carbon anion copper alginate fiber

[0029] Stock solution preparation: first add 0.08% mass fraction of activated carbon and 0.08% mass fraction of negative ion powder into water at 60°C, after stirring and dispersing evenly, add 3.84% mass fraction of sodium alginate with characteristic viscosity of 450mPa.s under stirring state, and mix thoroughly After stirring, dispersing and dissolving, filtering, defoaming, and standing still, the spinning stock solution with a viscosity of 8800 mPa.s was prepared.

[0030] Spinning: The stock solution is metered by a metering pump, and then enters the spinneret (cap) through a candle filter and a connecting pipe; the stock solution squeezed out from the holes on the spinneret enters the coagulation bath for coagulation. The first step coagulation solution is CaCl with a concentration of 3.2-4.5% by mass 2 solution, at 40-55°C, the stock solution is coagulated to form primary fibers of ac...

Embodiment 2

[0032] Embodiment 2: the preparation of negative ion copper alginate fiber

[0033] Stock solution preparation: first add 0.08% mass fraction of negative ion powder into water at 60°C, after stirring and dispersing evenly, add 3.84% mass fraction of sodium alginate with characteristic viscosity of 450mPa.s under stirring, fully mix, stir, disperse and dissolve, then filter, Degassing and standing to prepare spinning dope with a viscosity of 8800mPa.s.

[0034] Spinning: the stock solution is metered by a metering pump, and then enters the spinneret (cap) through a candle filter and a connecting pipe; the fine stream of the stock solution pressed out from the holes on the spinneret enters the coagulation bath for coagulation. The first step coagulation solution is CaCl with a concentration of 3.2-4.5% by mass 2 solution, at 40-55°C, the stock solution is coagulated to form primary fibers of activated carbon anion calcium alginate; the second-step coagulation solution is CuCl...

Embodiment 3

[0036] Embodiment 3: the preparation of mask

[0037] The activated carbon anion copper alginate fiber obtained in Example 1 is prepared into a non-woven filter material with a spunlace non-woven fabric process, and the filter material should have no obvious penetration holes, and the gram weight is 40g / m 2 . Cut the filter material, attach the hot-rolled non-woven fabric surface layer used in conventional masks on one side as the outer layer, and attach the hot-rolled non-woven fabric lining used in conventional masks on the other side as the inner layer, and the filter material layer is in the middle to form a sandwich structure , plus accessories such as nose pads, ear straps, etc., are sewn into a mask.

[0038] Effect verification: The activated carbon anion copper alginate antibacterial mask obtained in Example 1 is used to test according to the national standard GB19083-2010. The mask prepared in this example meets the technical requirements, the filtration efficienc...

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Abstract

The invention discloses a filtering material for a mask filtering layer and a mask. The filtering material is prepared through solidification of copper alginate fiber added with negative ion powder or copper alginate fiber added with negative ion powder and activated carbon with a wet spinning technology and a two-step method, wherein a first-step solidification liquid is a CaCl2 solution with the concentration of 3.2%-4.5% by mass at the temperature of 55 DEG C; a second-step solidification liquid is a CuCl2 solution with the concentration of 3%-5% by mass. According to the mask prepared from the filtering material for the mask filtering layer, high through-flow is realized, so that expiration and inspiration resistance is low, and the mask has better filtering effect on particles smaller than 0.5 mu m and a good antibacterial effect, is lower in cost and is particularly applicable to the haze weather condition.

Description

technical field [0001] The invention relates to the field of sanitary products, in particular to a mask filter material and a mask. Background technique [0002] The filter materials of the current PM2.5 masks are all made of ultra-fine denier spunbond PP non-woven fabrics, and a layer of silver-containing antibacterial agent non-woven fabric layer without PM2.5 filtering effect can also be added to increase the antibacterial function. The layer of carbon fiber non-woven fabric with no PM2.5 filtering effect increases the function of eliminating odor. [0003] Ultra-fine denier spunbonded PP non-woven fabric is used as the filter material of the mask. Due to the non-absorbent nature of the material, the moisture in the exhaled gas of the human body and the ambient air has little effect on the filtration efficiency of the filter material. It depends on the size of the fiber gap, and the PP fiber has a dense structure and is airtight. PM2.5 refers to aerosol particles with a...

Claims

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Application Information

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IPC IPC(8): B01D39/02B01J20/22B01D46/30B01D46/00B01D53/04A41D31/02A41D13/11A01N43/16A01N59/20A01P1/00A01P3/00
Inventor 刘松林邱东刘澄胜林丽雯黄福龙
Owner 厦门百美特生物材料科技有限公司
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