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Activated carbon composite melt-blown fabric, preparation method thereof and mask

A technology of activated carbon and melt-blown cloth, which is applied in the direction of separation methods, chemical instruments and methods, non-woven fabrics, etc., can solve the problems of easy detachment of activated carbon, poor cohesive force, uneven spraying of activated carbon, etc., and achieve good filtering effect and reduce The effect of peeling off and uniform adhesion

Active Publication Date: 2020-07-17
大湾汉唯(广州)医药科技集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the above technology, by using a powder spray gun to spray activated carbon while hot air is preparing the melt-blown material, in this process, activated carbon can be sprayed on the melt-blown material, and a larger content of spray can be achieved, but most of the Activated carbon is basically sprayed on the surface of the melt-blown material. For the fiber structure, it is difficult to enter the fiber grid due to the hot air flow. At the same time, due to the two airflows, the activated carbon spraying is uneven, and due to the spray gun The air temperature is lower than the hot air flow, so the temperature of the melt-blown material is reduced, and finally the cohesion between the activated carbon and the melt-blown material is poor, causing the activated carbon to fall off easily. The filtering effect is not very ideal

Method used

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  • Activated carbon composite melt-blown fabric, preparation method thereof and mask
  • Activated carbon composite melt-blown fabric, preparation method thereof and mask
  • Activated carbon composite melt-blown fabric, preparation method thereof and mask

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as figure 1 and figure 2 As shown, this embodiment discloses a manufacturing device for melt-blown cloth, which includes a screw extruder 1 and a spinning box 5, and the screw extruder 1 is equipped with a polypropylene raw material feeding bin 2. A filter 3 and a metering pump 4 are arranged between the screw extruder 1 and the spinning box 5, and the spinning box 5 includes a spinneret. Of course, the metering pump 4 can also be arranged in the spinning box 5, And the preferred gear metering pump of metering pump 4; Also comprise receiving device, described receiving device is curtain net 11, and it realizes receiving melt blown cloth by mesh belt receiver 10 and winder 12, and above-mentioned structure can adopt prior art Melt blown cloth manufacturing equipment.

[0033] Further, it also includes a fluidized bed 9, and the structure of the fluidized bed 9 is not specifically limited. In this embodiment, the fluidized bed 9 is a cylindrical empty tower struct...

Embodiment 2

[0042] Feed polypropylene granules with a melt index of 800g / min into the screw extruder 1, the polypropylene granules are melted and extruded at 180°C, and the extruded melt passes through the filter 3 and the metering pump 4 and then enters the spinning box 5 The spinneret is ejected, and the fluidized gas-solid mixture mixed with activated carbon particles from the fluidized bed 9 passes through the airflow channels on both sides of the spinneret as a draft airflow, and is sprayed on the melt by both sides of the spinneret; here , the mixed flow of activated carbon and hot air pulls, stirs and cools the melt, forming a gas-liquid-solid three-phase mixed flow field and jetting forward, the melt is drawn into filaments by high-temperature and high-speed airflow, and the melt is gradually cooled and finally solidified Activated carbon composite melt-blown cloth is formed on the screen 11; wherein, the airflow velocity of the traction airflow is 10000m / min, the airflow temperatu...

Embodiment 3

[0044] Feed polypropylene granules with a melt index of 1000g / min into the screw extruder 1, the polypropylene granules are heated and melted at 200°C and extruded, and the extruded melt passes through the filter 3 and the metering pump 4 and then enters the spinning box 5 The spinneret is ejected, and the fluidized gas-solid mixture mixed with activated carbon particles from the fluidized bed 9 passes through the airflow channels on both sides of the spinneret as a draft airflow, and is sprayed on the melt by both sides of the spinneret; here , the mixed flow of activated carbon and hot air pulls, stirs and cools the melt, forming a gas-liquid-solid three-phase mixed flow field and jetting forward, the melt is drawn into filaments by high-temperature and high-speed airflow, and the melt is gradually cooled and finally solidified Activated carbon composite melt-blown cloth is formed on the screen 11; wherein, the airflow velocity of the traction airflow is 12000m / min, the airfl...

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Abstract

The invention discloses a preparation method of an activated carbon composite melt-blown fabric. A melt-blown melt is sprayed by using a fluidized state high-temperature high-pressure gas containing activated carbon particles as traction gas, in the process, a gas-liquid-solid three-phase mixed flow field is sprayed forwards, and finally, the melt is cooled and formed and cured in the form of a fiber mesh structure; meanwhile, activated carbon evenly adheres to and is constrained in the fiber mesh structure, and finally the stable activated carbon composite melt-blown fabric is formed. The activated carbon composite melt-blown fabric is soaked in a traditional Chinese medicine extract, so that the melt-blown fabric has the effects of sterilizing, disinfecting, respiratory tract resistanceimprovement, odor freshening and the like. The invention also discloses the activated carbon composite melt-blown fabric obtained through the preparation method and a mask using the activated carbon composite melt-blown fabric. The filtering, sterilizing and protecting effects are good.

Description

technical field [0001] The invention relates to the technical field of medical and household protection, in particular to an activated carbon composite melt-blown cloth, a preparation method thereof, and a mask using the activated carbon composite melt-blown cloth. Background technique [0002] In the process of fighting the new coronavirus pneumonia in our country, effective preventive measures have been summed up, that is, reducing the gathering of people and wearing protective masks. Protective masks generally refer to KN95 and medical shell masks. These two types of masks generally include The outer waterproof layer, the middle filter layer and the inner water-absorbing layer, and the middle filter layer is generally made of melt-blown cloth, so the filtering effect of the melt-blown cloth determines the virus filtering effect of the mask. In the prior art, melt-blown cloth is generally prepared through processes such as polypropylene melt extrusion, metering, melt-blown...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/56D04H1/4291D01D13/02B01D39/08B01D46/00A41D13/11A41D31/02A41D31/10A41D31/12D06M13/00D06M15/00
CPCA41D13/11A41D31/02A41D31/10A41D31/12B01D39/08B01D46/0001B01D46/0028B01D46/0038B01D2239/0407B01D2239/0622B01D2239/0645D01D13/02D04H1/4291D04H1/56D06M13/00D06M15/00D06M16/00
Inventor 董汉玉郭巍周树峰刘昌孝王志红
Owner 大湾汉唯(广州)医药科技集团有限公司
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