CN111286867A - Antibacterial spunlace non-woven fabric and preparation method thereof - Google Patents
Antibacterial spunlace non-woven fabric and preparation method thereof Download PDFInfo
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- CN111286867A CN111286867A CN202010350924.XA CN202010350924A CN111286867A CN 111286867 A CN111286867 A CN 111286867A CN 202010350924 A CN202010350924 A CN 202010350924A CN 111286867 A CN111286867 A CN 111286867A
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- 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
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
- D01F1/103—Agents inhibiting growth of microorganisms
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/02—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from cellulose, cellulose derivatives, or proteins
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/16—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one other macromolecular compound obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds as constituent
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- 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
- D04H1/44—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
- D04H1/492—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres by fluid jet
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/01—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof
- D06M15/15—Proteins or derivatives thereof
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/04—Vegetal fibres
- D06M2101/06—Vegetal fibres cellulosic
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/38—Polyurethanes
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Abstract
The invention belongs to the technical field of non-woven fabrics, and discloses an antibacterial spunlace non-woven fabric and a preparation method thereof, wherein the method comprises the following steps: opening; film covering: stirring and dissolving protein hydrogel to obtain a film coating solution, immersing the loosened non-woven fabric monomer fibers into the film coating solution at least once, drying, and compounding the non-woven fabric monomer fibers on the surface to form a hydrogel film layer with a specified thickness; carding to form a net: the fiber net at least comprises two layers of non-parallel fibers, and the carding of each layer of fibers is as follows: paving a plurality of non-woven fabric monomer fibers coated with the hydrogel film layer in parallel by ultrasonic vibration; and (3) water jet forming: placing the carded and formed fiber web on an injector, firstly carrying out spunlace treatment on the fiber web for 5-10 minutes by a sodium hydroxide solution with the pH value of more than 11.5 and the temperature of 30-85 ℃, and then carrying out spunlace treatment on the fiber web for 25-30 minutes by atomized water to prepare the porous antibacterial spunlace non-woven fabric, wherein the uniformity of the sizes of through holes in the non-woven fabric can be effectively ensured based on the steps.
Description
Technical Field
The invention belongs to the technical field of non-woven fabrics, and particularly relates to an antibacterial spunlace non-woven fabric and a preparation method thereof.
Background
The non-woven fabric is a non-woven fabric, which is a non-woven fabric formed by directly utilizing high polymer slices, short fibers or filaments to form a net through air flow or machinery, then carrying out spunlace, needling or hot rolling reinforcement, and finally carrying out after-treatment.
For example, the non-woven fabric is used in the medical field and is mostly used as a bandage gauze, so that the non-woven fabric needs to be ensured to have good antibacterial property and air permeability when in use;
in addition, in the case of utilization in the industrial field, since the nonwoven fabric can be used as a filter member, it is necessary to ensure a uniform filtering effect of the nonwoven fabric when used;
however, in the prior art, most of the non-woven fabrics are formed by adopting the water-jet treatment, and it is difficult to ensure that uniform through holes can be formed among the fibers of the non-woven fabrics in the water-jet treatment process, so that the practical application with high requirements is difficult to meet.
Disclosure of Invention
In view of the above, the present invention provides an antibacterial spunlace nonwoven fabric and a preparation method thereof, and particularly, a hydrogel film having a specified thickness is coated on the surface of a nonwoven fabric monomer fiber to limit the distance between adjacent nonwoven fabric monomer fibers, thereby realizing the formation of a spunlace nonwoven fabric having uniform pores, and the nonwoven fabric monomer fiber adopts an antibacterial monomer fiber, so that the finally prepared spunlace nonwoven fabric has good antibacterial properties.
In order to achieve the purpose, the invention provides the following technical scheme:
a preparation method of an antibacterial spunlace non-woven fabric comprises the following preparation steps:
s1, opening: washing the antibacterial non-woven fabric monomer fiber with sterile water for 4-5 times, and then soaking in water at 50-55 ℃ for 30-35 minutes to finish the opening of the non-woven fabric monomer fiber;
s2, laminating: stirring and dissolving protein hydrogel to obtain a film coating solution, immersing the loosened non-woven fabric monomer fibers into the film coating solution at least once, drying, and compounding the non-woven fabric monomer fibers on the surface to form a hydrogel film layer with a specified thickness;
s3, carding to form a net: the fiber net at least comprises two layers of non-parallel fibers, and the carding of each layer of fibers is as follows: paving a plurality of non-woven fabric monomer fibers coated with the hydrogel film layer in parallel by ultrasonic vibration, wherein adjacent paved monomer fibers are contacted with each other;
s4, spunlace forming: and (3) placing the fiber web carded and formed in the step (S3) on a sprayer, carrying out spunlace treatment on the fiber web for 5-10 minutes by using a sodium hydroxide solution with the pH value being more than 11.5 and the temperature being 30-85 ℃, and then carrying out spunlace treatment on the fiber web for 25-30 minutes by using atomized water to obtain the porous antibacterial spunlace non-woven fabric.
Preferably, the non-woven fabric monomer fiber comprises a tea fiber core material and an alkali-resistant polyurethane coating surface layer.
Preferably, the non-woven fabric monomer fiber comprises the following preparation steps:
a) taking alkali-resistant glass fiber as a raw material, mixing the alkali-resistant glass fiber with molten polyurethane and an antibacterial agent under the action of slitting and shearing, and fully stirring to form a non-woven fabric monomer fiber surface layer; wherein the mixing mass ratio of the alkali-resistant glass fiber, the polyurethane and the antibacterial agent is 1: 2-5: 1;
b) taking nano-scale tea fibers as core materials;
c) and extruding the core material through a circular hole of the extruder die head, and extruding the non-woven fabric monomer fiber surface layer through a circular ring outside the extruder die head to obtain the antibacterial non-woven fabric monomer fiber with the core material wrapped on the surface layer.
Preferably, in the step S2, each immersion time of the nonwoven fabric monomer fiber is 10 to 30 seconds.
Preferably, in the step S2, after each time of immersing the nonwoven fabric monomer fiber, ultrasonic debubbling and drying are performed, and the drying time is 30-60 seconds.
Preferably, in the step S3, the ultrasonic vibration frequency is 30kHz to 35 kHz.
Preferably, in the step S4, the sodium hydroxide solution is spun into a front side with a jet pressure of 10 to 15 kPa.
Preferably, the step S4 includes the step of performing atomized water needling treatment including:
in the first stage, the spraying pressure is 10-15kPa, the front side is sprayed, and the spraying time is 2-5 minutes;
in the second stage, the spraying pressure is 15-25kPa, the front side and the back side are sprayed alternately, the spraying time of the front side is 5-6 minutes, and the spraying time of the back side is 3-4 minutes.
An antibacterial spunlace non-woven fabric is prepared according to the preparation method disclosed above, and the prepared antibacterial spunlace non-woven fabric is of a porous structure;
the antibacterial spunlace non-woven fabric at least comprises two non-parallel fiber layers, and each fiber layer comprises a plurality of antibacterial non-woven fabric monomer fibers which are arranged at equal intervals.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, when the non-woven fabric is prepared, the surface of the non-woven fabric monomer fiber is coated with the soluble hydrogel with a certain size, then the non-woven fabric monomer fiber is carded in an ultrasonic vibration mode, so that the non-woven fabric monomer fiber forms a uniformly tiled fiber net, the fiber net is subjected to spunlace treatment to obtain the spunlace non-woven fabric, and the soluble hydrogel can be synchronously dissolved in the spunlace treatment process, so that through holes with uniform sizes are formed in the whole spunlace non-woven fabric, and therefore, the spunlace non-woven fabric has uniform and good filtering effect and air permeability, and can be widely applied to the fields of filtering, weaving, medical treatment and.
The soluble hydrogel on the surface of the non-woven fabric monomer fiber is formed by adopting a mode of immersing, removing bubbles and drying for multiple times, has the advantage of adjustable size, and further effectively adjusts the size of the through hole on the final forming spunlace non-woven fabric so as to meet the specific requirements of different use fields.
In the spunlace treatment of the fiber web, alkaline sodium hydroxide solution is adopted for pretreatment, so that quick solution of hydrogel is realized on one hand, and preliminary positioning is formed on the fiber web on the other hand; and then, atomized water is utilized for treatment, the final forming of the spunlace non-woven fabric is completed while alkaline sodium hydroxide solution on the fiber web is removed, and the method has the advantages of short specific preparation time, high preparation efficiency and good forming quality.
Above-mentioned non-woven fabrics monomer fiber adopts the structure of top layer parcel core, and wherein the core chooses for use nanometer tea fiber, has good bacterinertness, and alkali-resistant glass fiber, polyurethane and antibacterial agent are selected for use as the raw materials on the top layer to make non-woven fabrics monomer fiber have good bacterinertness, waterproof nature and alkali resistance, destroy non-woven fabrics monomer fiber's molecular structure when effectively avoiding alkaline sodium hydroxide solution to carry out water treatment from this.
Drawings
FIG. 1 is a schematic structural view of an antibacterial spunlace nonwoven fabric manufactured in example 1 of the present invention;
FIG. 2 is a schematic structural diagram of an antibacterial spunlace nonwoven fabric manufactured in example 2 of the present invention;
fig. 3 is a schematic structural view of an antibacterial spunlace nonwoven fabric manufactured in example 3 of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A preparation method of an antibacterial spunlace non-woven fabric comprises the following preparation steps:
firstly, preparing an antibacterial non-woven fabric monomer fiber:
a) taking alkali-resistant glass fiber as a raw material, mixing the alkali-resistant glass fiber with molten polyurethane and an antibacterial agent under the action of slitting and shearing, and fully stirring to form a non-woven fabric monomer fiber surface layer; wherein the mixing mass ratio of the alkali-resistant glass fiber, the polyurethane and the antibacterial agent is 1: 2: 1;
b) taking nano-scale tea fibers as core materials;
c) and extruding the core material through a circular hole of the extruder die head, and extruding the non-woven fabric monomer fiber surface layer through a circular ring outside the extruder die head to obtain the antibacterial non-woven fabric monomer fiber with the surface layer wrapping the core material.
Then, an antibacterial spunlace nonwoven fabric is prepared based on the antibacterial nonwoven fabric monomer fibers.
S1, opening: and (3) cleaning the antibacterial non-woven fabric monomer fiber with sterile water for 4 times, and then soaking the non-woven fabric monomer fiber in water at the temperature of 55 ℃ for 30 minutes to finish the opening of the non-woven fabric monomer fiber.
S2, laminating: stirring and dissolving protein hydrogel to obtain a membrane coating solution, immersing the loosened non-woven fabric monomer fibers in the membrane coating solution for 30 seconds, taking out the non-woven fabric monomer fibers after immersion, performing ultrasonic bubble removal and drying treatment, forming a layer of protein hydrogel membrane on the surface of the non-woven fabric monomer fibers after drying, sampling and detecting to change the thickness of the layer of protein hydrogel membrane to be 0.5mm, repeating the immersion, ultrasonic bubble removal and drying for 19 times (namely, in the step, immersing and coating the membrane for 20 times in total), and obtaining the non-woven fabric monomer fibers with the 10mm hydrogel membrane coated on the surface.
S3, carding to form a net: under the ultrasonic vibration of 30kHz, tiling a plurality of non-woven fabric monomer fibers coated with hydrogel film layers in parallel, and contacting adjacent tiled monomer fibers with each other to obtain a first layer of fibers; and repeating the carding step once to obtain a second layer of fibers, wherein the second layer of fibers is vertical to the first layer of fibers, so as to obtain the fiber web with two layers of fibers.
S4, spunlace forming: the carded web in step S3 was placed on a sprayer:
firstly, carrying out water thorn treatment by spraying a sodium hydroxide solution with the pH value being more than 11.5 and the temperature being 30 ℃, wherein the treatment time is 10 minutes, and the spraying pressure of the solution during the treatment is 15 kPa;
then carrying out water-jet treatment on the front surface of the substrate by atomized water, wherein the treatment time is 2 minutes, and the spraying pressure of the atomized water during treatment is 15 kPa;
finally, carrying out three times of water needling treatment by alternately spraying the front side and the back side through atomized water, wherein in the alternating process, the pressure of the front side spraying treatment is 20kPa, and the treatment time is 5 minutes; the pressure of the back side spray treatment was 25kPa, and the treatment time was 3 minutes.
The utility model provides an antibiotic water thorn non-woven fabrics, is prepared by the preparation method that provides in this embodiment, and the structure of this antibiotic water thorn non-woven fabrics is shown as figure 1 specifically, and this antibiotic water thorn non-woven fabrics includes two-layer fibrous layer, is vertical fibrous layer and horizontal fibrous layer respectively, and the distance between two adjacent non-woven fabrics monomer fiber in every layer fibrous layer is 20mm, makes evenly form the square through-hole that the length of a side is 20mm in this antibiotic water thorn non-woven fabrics.
Example 2
Firstly, preparing an antibacterial non-woven fabric monomer fiber:
a) taking alkali-resistant glass fiber as a raw material, mixing the alkali-resistant glass fiber with molten polyurethane and an antibacterial agent under the action of slitting and shearing, and fully stirring to form a non-woven fabric monomer fiber surface layer; wherein the mixing mass ratio of the alkali-resistant glass fiber, the polyurethane and the antibacterial agent is 1: 4: 1;
b) taking nano-scale tea fibers as core materials;
c) and extruding the core material through a circular hole of the extruder die head, and extruding the non-woven fabric monomer fiber surface layer through a circular ring outside the extruder die head to obtain the antibacterial non-woven fabric monomer fiber with the surface layer wrapping the core material.
Then, an antibacterial spunlace nonwoven fabric is prepared based on the antibacterial nonwoven fabric monomer fibers.
S1, opening: and (3) washing the antibacterial non-woven fabric monomer fiber with sterile water for 5 times, and then immersing the non-woven fabric monomer fiber in water at the temperature of 52 ℃ for 40 minutes to finish the opening of the non-woven fabric monomer fiber.
S2, laminating: stirring and dissolving protein hydrogel to obtain a membrane coating solution, immersing loosened non-woven fabric monomer fibers in the membrane coating solution for 50 seconds, taking out the non-woven fabric monomer fibers after immersion, performing ultrasonic bubble removal and drying treatment, forming a layer of protein hydrogel membrane on the surface of the non-woven fabric monomer fibers after drying, sampling and detecting to change the thickness of the layer of protein hydrogel membrane to be 0.5mm, repeating the immersion, ultrasonic bubble removal and drying for 29 times (namely, in the step, immersing and coating are performed for 30 times in total), and obtaining the non-woven fabric monomer fibers with 15mm hydrogel membranes covered on the surface.
S3, carding to form a net: under the ultrasonic vibration of 32kHz, tiling a plurality of non-woven fabric monomer fibers coated with hydrogel film layers in parallel, and contacting adjacent tiled monomer fibers with each other to obtain a first layer of fibers; and repeating the carding step once to obtain a second layer of fibers, wherein the inclined included angle between the second layer of fibers and the first layer of fibers is 45 degrees, so as to obtain the fiber web with two layers of fibers.
S4, spunlace forming: the carded web in step S3 was placed on a sprayer:
firstly, carrying out water thorn treatment by spraying sodium hydroxide solution with the pH value being more than 11.5 and the temperature being 50 ℃, wherein the treatment time is 8 minutes, and the spraying pressure of the solution during the treatment is 12 kPa;
then carrying out water-jet treatment on the front surface of the substrate by atomized water, wherein the treatment time is 3 minutes, and the spraying pressure of the atomized water during treatment is 13 kPa;
finally, carrying out three times of water needling treatment by alternately spraying the front side and the back side through atomized water, wherein in the alternating process, the pressure of the front side spraying treatment is 18kPa, and the treatment time is 6 minutes; the pressure of the back side spray treatment was 23kPa, and the treatment time was 4 minutes.
An antibacterial spunlace nonwoven fabric is prepared by the preparation method provided by the embodiment, the structure of the antibacterial spunlace nonwoven fabric is shown in fig. 2, the antibacterial spunlace nonwoven fabric comprises two fiber layers, namely a longitudinal fiber layer and a transverse fiber layer, the distance between every two adjacent nonwoven fabric monomer fibers in each fiber layer is 30mm, and therefore the side length of the two adjacent nonwoven fabric monomer fibers is 30mm uniformly formed in the antibacterial spunlace nonwoven fabric
A diamond-shaped through hole of mm.
Example 3
Firstly, preparing an antibacterial non-woven fabric monomer fiber:
a) taking alkali-resistant glass fiber as a raw material, mixing the alkali-resistant glass fiber with molten polyurethane and an antibacterial agent under the action of slitting and shearing, and fully stirring to form a non-woven fabric monomer fiber surface layer; wherein the mixing mass ratio of the alkali-resistant glass fiber, the polyurethane and the antibacterial agent is 1: 5: 1;
b) taking nano-scale tea fibers as core materials;
c) and extruding the core material through a circular hole of the extruder die head, and extruding the non-woven fabric monomer fiber surface layer through a circular ring outside the extruder die head to obtain the antibacterial non-woven fabric monomer fiber with the surface layer wrapping the core material.
Then, an antibacterial spunlace nonwoven fabric is prepared based on the antibacterial nonwoven fabric monomer fibers.
S1, opening: and (3) cleaning the antibacterial non-woven fabric monomer fiber with sterile water for 4 times, and then soaking the non-woven fabric monomer fiber in water at the temperature of 50 ℃ for 30 minutes to finish the opening of the non-woven fabric monomer fiber.
S2, laminating: stirring and dissolving protein hydrogel to obtain a membrane coating solution, immersing the loosened non-woven fabric monomer fibers in the membrane coating solution for 30 seconds, taking out the non-woven fabric monomer fibers after immersion, performing ultrasonic bubble removal and drying treatment, forming a layer of protein hydrogel membrane on the surface of the non-woven fabric monomer fibers after drying, sampling and detecting to change the thickness of the layer of protein hydrogel membrane to be 0.5mm, repeating the immersion, ultrasonic bubble removal and drying for 9 times (namely, in the step, immersing and coating are performed for 10 times in total), and obtaining the non-woven fabric monomer fibers with the surfaces covered with the 5mm hydrogel membrane.
S3, carding to form a net: under the ultrasonic vibration of 35kHz, tiling a plurality of non-woven fabric monomer fibers coated with hydrogel film layers in parallel, and contacting adjacent tiled monomer fibers with each other to obtain a first layer of fibers; and repeating the carding step once to obtain a second layer of fibers, wherein the inclined included angle between the second layer of fibers and the first layer of fibers is 30 degrees, so as to obtain the fiber web with two layers of fibers.
S4, spunlace forming: the carded web in step S3 was placed on a sprayer:
firstly, carrying out water thorn treatment by spraying sodium hydroxide solution with the pH value being more than 11.5 and the temperature being 75 ℃, wherein the treatment time is 5 minutes, and the spraying pressure of the solution during the treatment is 15 kPa;
then carrying out water-jet treatment on the front surface of the substrate by atomized water, wherein the treatment time is 5 minutes, and the spraying pressure of the atomized water during treatment is 10 kPa;
finally, carrying out three times of water needling treatment by alternately spraying the front side and the back side through atomized water, wherein in the alternating process, the pressure of the front side spraying treatment is 15kPa, and the treatment time is 6 minutes; the pressure of the back side spray treatment was 25kPa, and the treatment time was 3 minutes.
The antibacterial spunlace nonwoven fabric is prepared by the preparation method provided by the embodiment, the structure of the antibacterial spunlace nonwoven fabric is shown in fig. 3, the antibacterial spunlace nonwoven fabric comprises two fiber layers, namely a longitudinal fiber layer and a transverse fiber layer, the distance between every two adjacent nonwoven fabric monomer fibers in each fiber layer is 10mm, and therefore rhombic through holes with the side length of 20mm are uniformly formed in the antibacterial spunlace nonwoven fabric.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The preparation method of the antibacterial spunlace non-woven fabric is characterized by comprising the following preparation steps:
s1, opening: washing the antibacterial non-woven fabric monomer fiber with sterile water for 4-5 times, and then soaking in water at 50-55 ℃ for 30-35 minutes to finish the opening of the non-woven fabric monomer fiber;
s2, laminating: stirring and dissolving protein hydrogel to obtain a film coating solution, immersing the loosened non-woven fabric monomer fibers into the film coating solution at least once, drying, and compounding the non-woven fabric monomer fibers on the surface to form a hydrogel film layer with a specified thickness;
s3, carding to form a net: the fiber net at least comprises two layers of non-parallel fibers, and the carding of each layer of fibers is as follows: paving a plurality of non-woven fabric monomer fibers coated with the hydrogel film layer in parallel by ultrasonic vibration, wherein adjacent paved monomer fibers are contacted with each other;
s4, spunlace forming: and (3) placing the fiber web carded and formed in the step (S3) on a sprayer, carrying out spunlace treatment on the fiber web for 5-10 minutes by using a sodium hydroxide solution with the pH value being more than 11.5 and the temperature being 30-85 ℃, and then carrying out spunlace treatment on the fiber web for 25-30 minutes by using atomized water to obtain the porous antibacterial spunlace non-woven fabric.
2. An antibacterial spunlace nonwoven fabric and a preparation method thereof according to claim 1, wherein the antibacterial spunlace nonwoven fabric is characterized in that: the non-woven fabric monomer fiber comprises a tea fiber core material and an alkali-resistant polyurethane film-coated surface layer.
3. An antibacterial spunlace nonwoven fabric and a preparation method thereof according to claim 2, wherein the monomer fiber of the nonwoven fabric comprises the following preparation steps:
a) taking alkali-resistant glass fiber as a raw material, mixing the alkali-resistant glass fiber with molten polyurethane and an antibacterial agent under the action of slitting and shearing, and fully stirring to form a non-woven fabric monomer fiber surface layer; wherein the mixing mass ratio of the alkali-resistant glass fiber, the polyurethane and the antibacterial agent is 1: 2-5: 1;
b) taking nano-scale tea fibers as core materials;
c) and extruding the core material through a circular hole of the extruder die head, and extruding the non-woven fabric monomer fiber surface layer through a circular ring outside the extruder die head to obtain the antibacterial non-woven fabric monomer fiber with the core material wrapped on the surface layer.
4. An antibacterial spunlace nonwoven fabric and a preparation method thereof according to claim 1, wherein the antibacterial spunlace nonwoven fabric is characterized in that: in the step S2, each immersion time of the non-woven fabric monomer fiber is 10-30 seconds.
5. An antibacterial spunlace nonwoven fabric and a preparation method thereof according to claim 4, wherein the antibacterial spunlace nonwoven fabric is characterized in that: in the step S2, after each time of immersing the nonwoven fabric monomer fiber, ultrasonic debubbling and drying are performed, and the drying time is 30-60 seconds.
6. An antibacterial spunlace nonwoven fabric and a preparation method thereof according to claim 1, wherein the antibacterial spunlace nonwoven fabric is characterized in that: in the step S3, the ultrasonic vibration frequency is 30kHz-35 kHz.
7. An antibacterial spunlace nonwoven fabric and a preparation method thereof according to claim 1, wherein the antibacterial spunlace nonwoven fabric is characterized in that: in the step S4, when the hydro-entangling process of the sodium hydroxide solution is performed, the front side is sprayed and the spraying pressure is 10 to 15 kPa.
8. An antibacterial spunlace nonwoven fabric and a preparation method thereof according to claim 1, wherein the step of performing atomized water spunlace treatment in step S4 comprises:
in the first stage, the spraying pressure is 10-15kPa, the front side is sprayed, and the spraying time is 2-5 minutes;
in the second stage, the spraying pressure is 15-25kPa, the front side and the back side are sprayed alternately, the spraying time of the front side is 5-6 minutes, and the spraying time of the back side is 3-4 minutes.
9. An antibacterial spunlace nonwoven fabric, which is prepared by the preparation method according to any one of claims 1 to 8, and has a porous structure;
the antibacterial spunlace non-woven fabric at least comprises two non-parallel fiber layers, and each fiber layer comprises a plurality of antibacterial non-woven fabric monomer fibers which are arranged at equal intervals.
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