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

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...

Examples

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...

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...

Examples

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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