CN115284689A - Air filtering melt-blown material with uniform ventilation - Google Patents

Air filtering melt-blown material with uniform ventilation Download PDF

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Publication number
CN115284689A
CN115284689A CN202210868408.5A CN202210868408A CN115284689A CN 115284689 A CN115284689 A CN 115284689A CN 202210868408 A CN202210868408 A CN 202210868408A CN 115284689 A CN115284689 A CN 115284689A
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Prior art keywords
fiber
pulp
air
melt
net
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Chinese (zh)
Inventor
毛兴斌
吴清惠
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Zhongcai Industrial New Materials Chuzhou Co ltd
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Zhongcai Industrial New Materials Chuzhou Co ltd
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Priority to CN202210868408.5A priority Critical patent/CN115284689A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/028—Net structure, e.g. spaced apart filaments bonded at the crossing points
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D31/00—Materials specially adapted for outerwear
    • A41D31/02—Layered materials
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D31/00—Materials specially adapted for outerwear
    • A41D31/04—Materials specially adapted for outerwear characterised by special function or use
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D31/00—Materials specially adapted for outerwear
    • A41D31/04—Materials specially adapted for outerwear characterised by special function or use
    • A41D31/10—Impermeable to liquids, e.g. waterproof; Liquid-repellent
    • A41D31/102—Waterproof and breathable
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D31/00—Materials specially adapted for outerwear
    • A41D31/04—Materials specially adapted for outerwear characterised by special function or use
    • A41D31/30—Antimicrobial, e.g. antibacterial
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    • B32B5/08—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer the fibres or filaments of a layer being of different substances, e.g. conjugate fibres, mixture of different fibres
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    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • B32B5/265—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary characterised by one fibrous or filamentary layer being a non-woven fabric layer
    • B32B5/273—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary characterised by one fibrous or filamentary layer being a non-woven fabric layer including a separate net structure layer
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
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    • D04H1/4291—Olefin series
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
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    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
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    • D04H1/56—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving in association with fibre formation, e.g. immediately following extrusion of staple fibres
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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Filtering Materials (AREA)

Abstract

The invention relates to the technical field of melt-blown fabric, in particular to an air filtering melt-blown material with uniform ventilation, which comprises a waterproof layer, wherein a filter layer is arranged on one side of the waterproof layer, an antibacterial layer is arranged on one side of the filter layer away from the waterproof layer, air holes I are uniformly distributed on the outer wall of one side of the waterproof layer, air holes II are uniformly distributed on the outer wall of one side of the antibacterial layer, and anti-blocking rings are arranged on the inner walls of the air holes I and the air holes II. According to the mask, the antibacterial layer with the air holes I and the waterproof layer with the air holes II are arranged on the two sides of the filter layer, so that the mask made of the air filtering melt-blown material has the effect of uniform ventilation, and the blockage of the air holes I and the air holes II is prevented through the anti-blocking rings, so that the ventilation performance of the air filtering melt-blown material is more reliable.

Description

Air filtering melt-blown material with uniform ventilation
Technical Field
The invention relates to the technical field of melt-blown cloth, in particular to an air filtering melt-blown material with uniform air permeability.
Background
Along with the improvement of living standard of people, people pay more and more attention to health, in order to prevent dust or other germs in the air from entering the lung through breathing, then people often need to wear the mask when going out, the mask is processed through the melt-blown material, and the melt-blown material can be utilized to filter dust and germs in the air.
Chinese patent No. CN202110520763.9 discloses a melt-blown air filter material with uniform air permeability and a production process thereof; the composition is characterized by comprising the following raw materials in parts by weight: 100 to 120 portions of polypropylene resin, 12 to 20 portions of ethylene propylene diene monomer, 2 to 4 portions of zinc stearate, 1.5 to 2.0 portions of polyethylene wax, 1.5 to 3.0 portions of 2, 4-di- (n-octyl thiomethylene) -6-methylphenol, 15 to 25 portions of hydrogenated styrene-butadiene-styrene terpolymer, 0.8 to 1.6 portions of anhydrous sodium dihydrogen phosphate, 1.5 to 2.0 portions of flow modifier, 1.3 to 1.8 portions of lubricant, 1.2 to 1.6 portions of slipping agent, 8 to 15 portions of inorganic filler, 3.5 to 5.0 portions of addition agent, 2.8 to 3.6 portions of nano powder and 2 to 4 portions of nucleating agent.
In the process of using the melt-blown material used by the mask in the prior art, the air holes are easily blocked, so that the air permeability of the mask is uneven, and the melt-blown material used by the mask has poor dust filtering effect on air, so that the quality of the mask is reduced, and therefore, the development of the melt-blown material with uniform air permeability is urgently needed.
Disclosure of Invention
The invention aims to provide an air filtering melt-blown material with uniform air permeability, so as to solve the problems of nonuniform air permeability and poor filtering effect in the background technology.
The technical scheme of the invention is as follows: the air filtering melt-blown material with uniform ventilation comprises a waterproof layer, wherein a filter layer is arranged on one side of the waterproof layer, an antibacterial layer is arranged on one side, away from the waterproof layer, of the filter layer, a first air hole is formed in the outer wall of one side of the waterproof layer, a second air hole is formed in the outer wall of one side of the antibacterial layer, and a blocking-preventing ring is arranged on the inner walls of the first air hole and the second air hole.
Further, the processing method of the filter layer comprises the following steps:
a feeding step: respectively cleaning the PP raw material and the electret master batch, drying the cleaned PP raw material and the electret master batch, and then putting the dried PP raw material and the electret master batch into a feeding device according to a certain proportion;
and (3) melt extrusion: the P raw material and the electret master batch are sent to a screw extruder through a feeding device, and the mixed P raw material and the electret master batch are melted into a melt through the extruder;
impurity removal: filtering impurities and coarser particles from a melt generated by extrusion through a filter;
and (3) injection molding: the hot air is used for generating high-temperature traction airflow, the melt flows out of a spinneret plate and is impacted by high-flow-speed air heated at a specific angle, the melt falls into a net forming machine, a net curtain of the net forming machine receives the melt of the jet flow, and the melt is condensed and cooled through a suction device to form melt-blown cloth;
electret and winding steps: the electret treatment makes the filter material fiber carry electric charge, and increases the electrostatic adsorption effect. The corona discharge which causes the local breakdown of air by a uniform electric field generates ion beams to bombard the dielectric medium, and ionic charges are deposited in the dielectric medium to form a filter layer and carry charges, and then the filter layer is rolled.
Further, the processing method of the antibacterial layer comprises the following steps:
pulping: removing impurities in cotton, crushing cotton fibers by using a pulp crusher to prepare fiber pulp, conveying the fiber pulp into a primary pulp washing tank by a screw pump, conveying the fiber pulp to an impurity removal process by a primary pulp washing pump, removing the impurities by using a desander and a pressure screen, conveying the fiber pulp into a high-speed mixer by the screw pump, and mixing the fiber pulp with nano-silver antibacterial raw materials to prepare high-precision fiber pulp;
a step of net making: sending the high-precision fiber slurry into a secondary pulp washing groove through a screw pump, adding water again for dilution, distributing the high-precision fiber slurry by a secondary pulp washing pump through a central pulp distributor, and sending the high-precision fiber slurry into an inclined-net pulp flowing box to form a uniform fiber net;
and (3) drying: the fiber web processed by the fiber web is sent into a dryer for drying treatment;
and (3) needling: dipping a felting needle of a needle machine with silicone fluid, then making the felting needle of the needle machine to pierce a fiber web, after the felting needle penetrates through the fiber web, cooling the silicone fluid by a fan, forming uniformly distributed air holes I on the fiber web, cooling the silicone fluid on the inner wall of the air holes I to form an anti-blocking ring, and then separating the felting needle from the fiber web to prepare an antibacterial layer.
Further, the processing method of the waterproof layer comprises the following steps:
pulping: removing impurities in cotton, crushing cotton fibers by using a pulp crusher to prepare fiber pulp, feeding the fiber pulp into a primary pulp washing tank by a screw pump, pumping the fiber pulp into an impurity removal process by a primary pulp washing pump, removing the impurities by using a desander and a pressure screen, and feeding the fiber pulp into a high-speed mixer by the screw pump to prepare high-precision fiber pulp;
a step of net making: sending the high-precision fiber slurry into a secondary pulp washing groove through a screw pump, adding water again for dilution, distributing the high-precision fiber slurry by a secondary pulp washing pump through a central pulp distributor, and sending the high-precision fiber slurry into an inclined-net pulp flowing box to form a uniform fiber net;
and (3) drying: the fiber web after the fiber web processing is sent into a dryer for drying treatment;
compounding: attaching the dried fiber mesh and the waterproof and breathable film by adopting static electricity, and then compounding by hot pressing;
and (3) needling: dipping the felting needles of the needling machine with the silicone fluid, then making the felting needles of the needling machine to pierce the fiber web, after the felting needles penetrate the fiber web, cooling the silicone fluid by the fan, forming uniformly distributed air holes II on the fiber web, cooling the silicone fluid on the inner walls of the air holes II to form an anti-blocking ring, and then separating the felting needles from the fiber web to prepare the waterproof layer.
Further, in the feeding step, the adding proportion of the PP raw material to the electret master batch is (10): and 5, drying the PP raw material and the electret master batch at the temperature of 120-140 ℃.
Further, in the step of melt extrusion, the heating temperature of the PP raw material and the electret master batch is 180-210 ℃, and the PP raw material and the electret master batch are heated in an electric temperature control mode.
Further, in the compounding step, the water-proof and breathable film is a PE film, and the thickness of the water-proof and breathable film is 0.1mm-0.3mm.
Further, in the impurity removal step, the filtering precision of the filter is 200-500 meshes, and the impurity removal times are 3-5.
Further, in the screening step: the mass concentration of the high-precision fiber pulp diluted by adding water is 0.1-0.6 per mill, and in the drying step, the drying temperature is set to be 80-105 ℃.
Further, in the needling step, the diameter of the felting needles is 0.1mm-0.4mm, and the hole pitch of the felting needles is 0.5mm-0.8mm.
The invention provides an air filtering melt-blown material with uniform air permeability through improvement, and compared with the prior art, the invention has the following improvement and advantages that:
(1) According to the mask, the antibacterial layer with the air holes I and the waterproof layer with the air holes II are arranged on the two sides of the filter layer, so that the mask made of the air filtering melt-blown material has the effect of uniform ventilation, and the blockage of the air holes I and the air holes II is prevented through the anti-blocking rings, so that the ventilation performance of the air filtering melt-blown material is more reliable.
(2) According to the invention, the electret master batch is added when the filtering layer is subjected to melt-blowing, and the electric field is utilized to enable the filtering layer to have electric charges inside, so that the mask made of the air filtering melt-blowing material can capture dust in air through the electric charges, and further the filtering effect of the air filtering melt-blowing material is better.
(3) According to the invention, the antibacterial layer is used as the inner layer of the air filtering melt-blown material, and the waterproof layer is used as the outer layer of the air filtering melt-blown material, so that the inner layer of the mask made of the air filtering melt-blown material has an antibacterial effect, and bacteria in the mask are prevented from breeding and entering the inlet.
(4) According to the invention, the pricking pin is used for dipping the silica gel liquid and then pricking the antibacterial layer and the waterproof layer, so that the processing of the air vent I and the air vent II and the formation of the anti-blocking ring can be formed at one time, and the processing of the anti-blocking ring is more convenient.
Drawings
The invention is further explained below with reference to the figures and examples:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged view at A of the present invention;
FIG. 3 is a flow chart of a filter layer processing method of the present invention;
FIG. 4 is a flow chart of a method for processing an antibiotic layer according to the present invention;
fig. 5 is a flow chart of a waterproof layer processing method of the present invention.
Description of reference numerals:
1 waterproof layer, 2 filter layers, 3 antibacterial layers, 4 air holes I, 5 air holes II and 6 anti-blocking rings.
Detailed Description
The present invention will be described in detail with reference to fig. 1 to 5, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Example one
The utility model provides a ventilative even filtration melt-blown material, includes waterproof layer 1, and one side of waterproof layer 1 is provided with filter layer 2, and one side that waterproof layer 1 was kept away from to filter layer 2 is provided with antibiotic layer 3, and one side outer wall of waterproof layer 1 is provided with evenly distributed's bleeder vent 4, and one side outer wall of antibiotic layer 3 is provided with evenly distributed's bleeder vent two 5, and the inner wall of bleeder vent 4 and bleeder vent two 5 all is provided with prevents blocking the ring.
Further, the processing method of the filter layer 2 includes the steps of:
a feeding step: respectively cleaning the PP raw material and the electret master batch, drying the cleaned PP raw material and the electret master batch, and then putting the dried PP raw material and the electret master batch into a feeding device according to a certain proportion;
and (3) melt extrusion: the P raw material and the electret master batch are sent to a screw extruder through a feeding device, and the mixed P raw material and the electret master batch are melted into a melt through the extruder;
impurity removal: filtering impurities and coarser particles from a melt generated by extrusion through a filter;
and (3) injection molding: the hot air is used for generating high-temperature traction airflow, the melt flows out of a spinneret plate and is impacted by high-flow-speed air heated at a specific angle, the melt falls into a net forming machine, a net curtain of the net forming machine receives the melt of the jet flow, and the melt is condensed and cooled through a suction device to form melt-blown cloth;
electret and rolling steps: the electret treatment makes the filter material fiber carry electric charge, increases the electrostatic adsorption effect, utilizes a uniform electric field to cause the corona discharge of the local breakdown of the air to generate ion beams to bombard the dielectric medium, and makes the ion charges deposit in the dielectric medium to form the filter layer 2 and carry the electric charge, and then winds the filter layer 2.
Further, the processing method of the antibacterial layer 3 comprises the following steps:
pulping: removing impurities in cotton, crushing cotton fibers by using a pulp breaker to prepare fiber pulp, sending the fiber pulp into a primary pulp flushing tank through a screw pump, sending the fiber pulp into an impurity removal process through a primary pulp flushing pump, removing the impurities by using a desander and a pressure screen, sending the fiber pulp into a high-speed mixer through the screw pump, and mixing the fiber pulp with nano-silver antibacterial raw materials to prepare high-precision fiber pulp;
a step of net making: sending the high-precision fiber slurry into a secondary pulp washing groove through a screw pump, adding water again for dilution, distributing the high-precision fiber slurry by a secondary pulp washing pump through a central pulp distributor, and sending the high-precision fiber slurry into an inclined-net pulp flowing box to form a uniform fiber net;
and (3) drying: the fiber web after the fiber web processing is sent into a dryer for drying treatment;
and (3) needling: dipping a felting needle of a needle machine with silica gel liquid, then making the felting needle of the needle machine to pierce a fiber web, cooling the silica gel liquid by a fan after the felting needle penetrates through the fiber web, forming air holes I4 which are uniformly distributed on the fiber web, forming an anti-blocking ring 6 after the silica gel liquid on the inner wall of the air holes I4 is cooled, and then separating the felting needle from the fiber web to prepare an antibacterial layer 3.
Further, the processing method of the waterproof layer 1 comprises the following steps:
pulping: removing impurities in cotton, crushing cotton fibers by using a pulp crusher to prepare fiber pulp, feeding the fiber pulp into a primary pulp washing tank by a screw pump, pumping the fiber pulp into an impurity removal process by a primary pulp washing pump, removing the impurities by using a desander and a pressure screen, and feeding the fiber pulp into a high-speed mixer by the screw pump to prepare high-precision fiber pulp;
a step of net making: sending the high-precision fiber slurry into a secondary pulp washing groove through a screw pump, adding water again for dilution, distributing the high-precision fiber slurry by a secondary pulp washing pump through a central pulp distributor, and sending the high-precision fiber slurry into an inclined-net pulp flowing box to form a uniform fiber net;
and (3) drying: the fiber web processed by the fiber web is sent into a dryer for drying treatment;
compounding: attaching the dried fiber net and the waterproof and breathable film to each other by adopting static electricity, and drying in a dryer;
and (3) needling: dipping the felting needles of the needling machine with silicone fluid, then making the felting needles of the needling machine to pierce the fiber web, after the felting needles penetrate the fiber web, cooling the silicone fluid by the fan, forming uniformly distributed air holes II 5 on the fiber web, cooling the silicone fluid on the inner walls of the air holes II 5 to form an anti-blocking ring 6, and then separating the felting needles from the fiber web to prepare the waterproof layer 1.
Further, in the feeding step, the adding proportion of the PP raw material and the electret master batch is 10.
Further, in the step of melt extrusion, the temperature for heating the PP raw material and the electret master batch is 180-210 ℃, and the PP raw material and the electret master batch are heated in an electric temperature control mode.
Further, in the compounding step, the waterproof and breathable film is a PE film, and the thickness of the waterproof and breathable film is 0.1mm-0.3mm.
Further, in the impurity removal step, the filtering precision of the filter is 500 meshes, and the impurity removal times are 3-5 times.
Further, in the step of net making: the mass concentration of the high-precision fiber slurry diluted by water is 0.1 per mill, and in the drying step, the drying temperature is set to be 80 ℃.
Further, in the needling step, the diameter of the needles is 0.1mm, and the pitch of the needles is 0.5mm.
Example two
The utility model provides a ventilative even filtration melt blown material, includes waterproof layer 1, and one side of waterproof layer 1 is provided with filter layer 2, and one side that waterproof layer 1 was kept away from to filter layer 2 is provided with antibiotic layer 3, and one side outer wall of waterproof layer 1 is provided with evenly distributed's bleeder vent 4, and one side outer wall of antibiotic layer 3 is provided with evenly distributed's bleeder vent two 5, and the inner wall of bleeder vent 4 and bleeder vent two 5 all is provided with prevents blocking the ring.
Further, the processing method of the filter layer 2 includes the steps of:
a feeding step: respectively cleaning the PP raw material and the electret master batch, drying the cleaned PP raw material and the electret master batch, and then putting the dried PP raw material and the electret master batch into a feeding device according to a certain proportion;
and (3) melt extrusion: the P raw material and the electret master batch are sent to a screw extruder through a feeding device, and the mixed P raw material and the electret master batch are melted into a melt through the extruder;
impurity removal: filtering impurities and coarser particles from a melt generated by extrusion through a filter;
and (3) injection molding: the hot air is used for generating high-temperature traction airflow, the melt flows out of a spinneret plate and is impacted by high-flow-speed air heated at a specific angle, the melt falls into a net forming machine, a net curtain of the net forming machine receives the melt of the jet flow, and the melt is condensed and cooled through a suction device to form melt-blown cloth;
electret and winding steps: the electret treatment makes the filter material fiber carry electric charge, increases the electrostatic adsorption effect, utilizes a uniform electric field to cause the corona discharge of the local breakdown of the air to generate ion beams to bombard the dielectric medium, and makes the ion charges deposit in the dielectric medium to form the filter layer 2 and carry the electric charge, and then winds the filter layer 2.
Further, the processing method of the antibacterial layer 3 comprises the following steps:
pulping: removing impurities in cotton, crushing cotton fibers by using a pulp crusher to prepare fiber pulp, conveying the fiber pulp into a primary pulp washing tank by a screw pump, conveying the fiber pulp to an impurity removal process by a primary pulp washing pump, removing the impurities by using a desander and a pressure screen, conveying the fiber pulp into a high-speed mixer by the screw pump, and mixing the fiber pulp with nano-silver antibacterial raw materials to prepare high-precision fiber pulp;
a step of net making: sending the high-precision fiber slurry into a secondary pulp washing groove through a screw pump, adding water again for dilution, distributing the high-precision fiber slurry by a secondary pulp washing pump through a central pulp distributor, and sending the high-precision fiber slurry into an inclined-net pulp flowing box to form a uniform fiber net;
and (3) drying: the fiber web processed by the fiber web is sent into a dryer for drying treatment;
and (3) needling: dipping a felting needle of a needle machine with silicon fluid, then making the felting needle of the needle machine to pierce a fiber web, after the felting needle penetrates through the fiber web, cooling the silicon fluid by a fan, forming uniformly distributed air holes I4 on the fiber web, cooling the silicon fluid on the inner wall of the air holes I4 to form an anti-blocking ring 6, and then separating the felting needle from the fiber web to prepare an antibacterial layer 3.
Further, the processing method of the waterproof layer 1 comprises the following steps:
pulping: removing impurities in cotton, crushing cotton fibers by using a pulp crusher to prepare fiber pulp, feeding the fiber pulp into a primary pulp washing tank by a screw pump, pumping the fiber pulp into an impurity removal process by a primary pulp washing pump, removing the impurities by using a desander and a pressure screen, and feeding the fiber pulp into a high-speed mixer by the screw pump to prepare high-precision fiber pulp;
a step of net making: feeding the high-precision fiber slurry into a secondary pulp washing groove through a screw pump, adding water for dilution again, and feeding the high-precision fiber slurry into an inclined-wire pulp flowing box after the high-precision fiber slurry is distributed by a secondary pulp washing pump through a central pulp distributor to form a uniform fiber net;
and (3) drying: the fiber web processed by the fiber web is sent into a dryer for drying treatment;
compounding: attaching the dried fiber net and the waterproof and breathable film to each other by adopting static electricity, and drying in a dryer;
and (3) needling: dipping the felting needles of the needling machine with silicone fluid, then making the felting needles of the needling machine to pierce the fiber web, after the felting needles penetrate the fiber web, cooling the silicone fluid by the fan, forming uniformly distributed air holes II 5 on the fiber web, cooling the silicone fluid on the inner walls of the air holes II 5 to form an anti-blocking ring 6, and then separating the felting needles from the fiber web to prepare the waterproof layer 1.
Further, in the feeding step, the ratio of the PP raw material to the electret master batch is 10.
Further, in the step of melt extrusion, the temperature for heating the PP raw material and the electret master batch is 180-210 ℃, and the PP raw material and the electret master batch are heated in an electric temperature control mode.
Further, in the compounding step, the water-proof and breathable film is a PE film, and the thickness of the water-proof and breathable film is 0.1mm-0.3mm.
Further, in the impurity removal step, the filtering precision of the filter is 500 meshes, and the impurity removal times are 3-5 times.
Further, in the step of net making: the mass concentration of the high-precision fiber pulp diluted by adding water is 0.1 per mill, and in the drying step, the drying temperature is set to be 80 ℃.
Further, in the needling step, the diameter of the needles is 0.1mm, and the pitch of the needles is 0.5mm.
EXAMPLE III
The utility model provides a ventilative even filtration melt-blown material, includes waterproof layer 1, and one side of waterproof layer 1 is provided with filter layer 2, and one side that waterproof layer 1 was kept away from to filter layer 2 is provided with antibiotic layer 3, and one side outer wall of waterproof layer 1 is provided with evenly distributed's bleeder vent 4, and one side outer wall of antibiotic layer 3 is provided with evenly distributed's bleeder vent two 5, and the inner wall of bleeder vent 4 and bleeder vent two 5 all is provided with prevents blocking the ring.
Further, the processing method of the filter layer 2 includes the steps of:
a feeding step: respectively cleaning the PP raw material and the electret master batch, drying the cleaned PP raw material and the electret master batch, and then putting the dried PP raw material and the electret master batch into a feeding device according to a certain proportion;
and (3) melt extrusion: the P raw material and the electret master batch are sent to a screw extruder through a feeding device, and the mixed P raw material and the electret master batch are melted into a melt through the extruder;
impurity removal: filtering impurities and coarse particles from the melt generated by extrusion through a filter;
and (3) injection molding: hot air is utilized to generate high-temperature traction air flow, the melt flows out of a spinneret plate and is impacted by heated high-flow-speed air at a specific angle, the melt falls into a net forming machine, a net curtain of the net forming machine receives the jet melt, and the jet melt is condensed and cooled by a suction device to form melt-blown cloth;
electret and rolling steps: the electret treatment makes the filter material fiber carry electric charge, increases the electrostatic adsorption effect, utilizes a uniform electric field to cause the corona discharge of the local breakdown of the air to generate ion beams to bombard the dielectric medium, and makes the ion charges deposit in the dielectric medium to form the filter layer 2 and carry the electric charge, and then winds the filter layer 2.
Further, the processing method of the antibacterial layer 3 comprises the following steps:
pulping: removing impurities in cotton, crushing cotton fibers by using a pulp breaker to prepare fiber pulp, sending the fiber pulp into a primary pulp flushing tank through a screw pump, sending the fiber pulp into an impurity removal process through a primary pulp flushing pump, removing the impurities by using a desander and a pressure screen, sending the fiber pulp into a high-speed mixer through the screw pump, and mixing the fiber pulp with nano-silver antibacterial raw materials to prepare high-precision fiber pulp;
a step of net making: sending the high-precision fiber slurry into a secondary pulp washing groove through a screw pump, adding water again for dilution, distributing the high-precision fiber slurry by a secondary pulp washing pump through a central pulp distributor, and sending the high-precision fiber slurry into an inclined-net pulp flowing box to form a uniform fiber net;
and (3) drying: the fiber web processed by the fiber web is sent into a dryer for drying treatment;
and (3) needling: dipping a felting needle of a needle machine with silicon fluid, then making the felting needle of the needle machine to pierce a fiber web, after the felting needle penetrates through the fiber web, cooling the silicon fluid by a fan, forming uniformly distributed air holes I4 on the fiber web, cooling the silicon fluid on the inner wall of the air holes I4 to form an anti-blocking ring 6, and then separating the felting needle from the fiber web to prepare an antibacterial layer 3.
Further, the processing method of the waterproof layer 1 comprises the following steps:
pulping: removing impurities in cotton, crushing cotton fibers by using a pulp crusher to prepare fiber pulp, sending the fiber pulp into a primary pulp washing tank by a screw pump, sending the fiber pulp into an impurity removal process by a primary pulp washing pump, removing the impurities by using a desander and a pressure screen, and sending the fiber pulp into a high-speed mixer by the screw pump to prepare high-precision fiber pulp;
a step of net making: feeding the high-precision fiber slurry into a secondary pulp washing groove through a screw pump, adding water for dilution again, and feeding the high-precision fiber slurry into an inclined-wire pulp flowing box after the high-precision fiber slurry is distributed by a secondary pulp washing pump through a central pulp distributor to form a uniform fiber net;
and (3) drying: the fiber web processed by the fiber web is sent into a dryer for drying treatment;
compounding: attaching the dried fiber web and the waterproof and breathable film by adopting static electricity, and drying in a dryer;
and (3) needling: dipping a felting needle of a needling machine with silica gel liquid, then making the felting needle of the needling machine to pierce a fiber web, cooling the silica gel liquid by a fan after the felting needle penetrates through the fiber web, forming uniformly distributed air holes II 5 on the fiber web, forming an anti-blocking ring 6 after the silica gel liquid on the inner wall of the air holes II 5 is cooled, and then separating the felting needle from the fiber web to prepare a waterproof layer 1.
Further, in the feeding step, the ratio of the PP raw material to the electret master batch is 10:5, the temperature for drying the PP raw material and the electret master batch is 120-140 ℃.
Further, in the step of melt extrusion, the temperature for heating the PP raw material and the electret master batch is 180-210 ℃, and the PP raw material and the electret master batch are heated in an electric temperature control mode.
Further, in the compounding step, the waterproof and breathable film is a PE film, and the thickness of the waterproof and breathable film is 0.1mm-0.3mm.
Further, in the impurity removal step, the filtering precision of the filter is 500 meshes, and the impurity removal times are 3-5 times.
Further, in the step of net making: the mass concentration of the high-precision fiber pulp diluted by adding water is 0.1 per mill, and in the drying step, the drying temperature is set to be 80 ℃.
Further, in the needling step, the diameter of the needles is 0.1mm, and the pitch of the needles is 0.5mm.
The proportion of the PP raw material and the electret master batch adopted in the first embodiment, the second embodiment and the third embodiment is different, and the effect is best in the third embodiment by comparing the experiment on the finally obtained air filtering melt-blown material.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. An air filtration meltblown material with uniform air permeability, characterized by: the novel waterproof layer is characterized by comprising a waterproof layer (1), wherein a filter layer (2) is arranged on one side of the waterproof layer (1), an antibacterial layer (3) is arranged on one side, away from the waterproof layer (1), of the filter layer (2), air holes I (4) are uniformly distributed on the outer wall of one side of the waterproof layer (1), air holes II (5) are uniformly distributed on the outer wall of one side of the antibacterial layer (3), and anti-blocking rings are arranged on the inner walls of the air holes I (4) and the air holes II (5).
2. A breathable, uniform air filtration meltblown material according to claim 1, further comprising: the processing method of the filter layer (2) comprises the following steps:
a feeding step: respectively cleaning the PP raw material and the electret master batch, drying the cleaned PP raw material and the electret master batch, and then putting the dried PP raw material and the electret master batch into a feeding device according to a certain proportion;
and (3) melt extrusion: the P raw material and the electret master batch are sent to a screw extruder through a feeding device, and the mixed P raw material and the electret master batch are melted into a melt through the extruder;
impurity removal: filtering impurities and coarse particles from the melt generated by extrusion through a filter;
and (3) injection molding: hot air is utilized to generate high-temperature traction air flow, the melt flows out of a spinneret plate and is impacted by heated high-flow-speed air at a specific angle, the melt falls into a net forming machine, a net curtain of the net forming machine receives the jet melt, and the jet melt is condensed and cooled by a suction device to form melt-blown cloth;
electret and winding steps: the dielectric medium is bombarded by ion beams generated by corona discharge which causes local breakdown of air by utilizing a uniform electric field, ionic charges are deposited in the dielectric medium to form the filter layer (2) and carry the charges, and then the filter layer (2) is rolled.
3. A uniformly air permeable air filtration meltblown material according to claim 1 wherein: the processing method of the antibacterial layer (3) comprises the following steps:
pulping: removing impurities in cotton, crushing cotton fibers by using a pulp crusher to prepare fiber pulp, conveying the fiber pulp into a primary pulp washing tank by a screw pump, conveying the fiber pulp to an impurity removal process by a primary pulp washing pump, removing the impurities by using a desander and a pressure screen, conveying the fiber pulp into a high-speed mixer by the screw pump, and mixing the fiber pulp with nano-silver antibacterial raw materials to prepare high-precision fiber pulp;
a step of net making: sending the high-precision fiber slurry into a secondary pulp washing groove through a screw pump, adding water again for dilution, distributing the high-precision fiber slurry by a secondary pulp washing pump through a central pulp distributor, and sending the high-precision fiber slurry into an inclined-net pulp flowing box to form a uniform fiber net;
and (3) drying: the fiber web processed by the fiber web is sent into a dryer for drying treatment;
and (3) needling: dipping a felting needle of a needle machine with silicon fluid, then making the felting needle of the needle machine to pierce a fiber web, after the felting needle penetrates through the fiber web, cooling the silicon fluid by a fan, forming uniformly distributed air holes I (4) on the fiber web, cooling the silicon fluid on the inner wall of the air holes I (4) to form an anti-blocking ring (6), and then separating the felting needle from the fiber web to prepare an antibacterial layer (3).
4. A uniformly air permeable air filtration meltblown material according to claim 1 wherein: the processing method of the waterproof layer (1) comprises the following steps:
pulping: removing impurities in cotton, crushing cotton fibers by using a pulp crusher to prepare fiber pulp, sending the fiber pulp into a primary pulp washing tank by a screw pump, sending the fiber pulp into an impurity removal process by a primary pulp washing pump, removing the impurities by using a desander and a pressure screen, and sending the fiber pulp into a high-speed mixer by the screw pump to prepare high-precision fiber pulp;
a step of net making: sending the high-precision fiber slurry into a secondary pulp washing groove through a screw pump, adding water again for dilution, distributing the high-precision fiber slurry by a secondary pulp washing pump through a central pulp distributor, and sending the high-precision fiber slurry into an inclined-net pulp flowing box to form a uniform fiber net;
and (3) drying: the fiber web processed by the fiber web is sent into a dryer for drying treatment;
compounding: attaching the dried fiber mesh and the waterproof and breathable film by adopting static electricity, and then compounding by hot pressing;
and (3) needling: dipping a felting needle of a needling machine with silicon fluid, then making the felting needle of the needling machine to pierce a fiber web, after the felting needle penetrates through the fiber web, cooling the silicon fluid by a fan, forming uniformly distributed air holes II (5) on the fiber web, cooling the silicon fluid on the inner wall of the air holes II (5) to form an anti-blocking ring (6), and then separating the felting needle from the fiber web to prepare a waterproof layer (1).
5. A uniformly air permeable air filtration meltblown material according to claim 3 wherein: in the feeding step, the ratio of the PP raw material to the electret master batch is 10: and 5, drying the PP raw material and the electret master batch at the temperature of 120-140 ℃.
6. A breathable, uniform air filtration meltblown material according to claim 3, further comprising: in the step of melt extrusion, the heating temperature of the PP raw material and the electret master batch is 180-210 ℃, and the PP raw material and the electret master batch are heated in an electric temperature control mode.
7. The air permeable, uniform air filtration meltblown material of claim 4, wherein: in the compounding step, the water-proof and breathable film is a PE film, and the thickness of the water-proof and breathable film is 0.1mm-0.3mm.
8. A uniformly air permeable air filtration meltblown material according to claim 3 wherein: in the impurity removal step, the filtering precision of the filter is 200-500 meshes, and the impurity removal frequency is 3-5 times.
9. A uniformly air permeable air filtration meltblown material according to claim 3 wherein: in the step of screening: the mass concentration of the high-precision fiber pulp diluted by adding water is 0.1-0.6 per mill, and in the drying step, the drying temperature is set to be 80-105 ℃.
10. A breathable, uniform air filtration meltblown material according to claim 3, further comprising: in the needling step, the diameter of the felting needles is 0.1mm-0.4mm, and the hole pitch of the felting needles is 0.5mm-0.8mm.
CN202210868408.5A 2022-07-22 2022-07-22 Air filtering melt-blown material with uniform ventilation Pending CN115284689A (en)

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