CN112056652B - Multifunctional protective mask - Google Patents

Abstract

The invention relates to a mask, in particular to a multifunctional protective mask. The multifunctional protective mask of the present invention includes a mask body and an ear hanging portion for fixing the mask body. The mask body includes an inner layer, a middle layer and a surface layer from the inside to the outside. The inner layer is made of pure cotton antibacterial woven fabric. Plain cloth, the middle layer is made of activated carbon cloth, and the surface layer is made of three-proof antibacterial woven fabric. There is a replaceable filter piece between the surface layer and the middle layer, and the filter piece is made of melt-blown cloth with a filtration effect of greater than 95%. The multifunctional protective mask of the present invention is designed to fit the facial curve, has good breathability, high protective performance, and can be produced quickly. The fabric can effectively physically isolate water-based, oily particles, blood, etc., and can comprehensively protect the respiratory system and replace filters. The pieces are convenient for better recycling, and the mask body has high durability.

Description

A multifunctional protective mask

Technical Field

The invention relates to a mask, in particular to a multifunctional protective mask.

Background Art

Recently, the demand for medical masks has been increasing, and the global demand remains high, with a serious shortage of supply. Traditional masks are used to prevent bacteria and virus particles in the air from entering the human respiratory tract. The principle is electrostatic adsorption of meltblown cloth. As the moisture exhaled by the human body increases, the static electricity on the non-woven fabric will gradually disappear, thus losing the adsorption function. Therefore, the effective use time is not long, and it cannot be washed and disinfected. It can only be used as a disposable mask with a short lifespan. There are several types of disposable mask materials: non-woven masks, paper masks, and activated carbon masks. Reusable masks are mainly cotton masks or all-cotton masks. Traditional protective masks are in short supply, and most of them have a short lifespan and cannot be recycled. Therefore, it is necessary to design a protective mask that can be multifunctional and recycled and is convenient for export to other countries.

Summary of the invention

The technical problem to be solved by the present invention is to provide a multifunctional protective mask in view of the deficiencies of the above-mentioned prior art. The multifunctional protective mask of the present invention is designed to fit the facial curve, has good air permeability, high protective performance, can be quickly produced, and the fabric can effectively physically isolate water-based, oily particles and blood, etc., can fully protect the respiratory system, and the replacement of the filter is convenient for better recycling. The mask body is highly durable and can also be recycled.

In order to solve the above technical problems, the present invention adopts the following technical scheme: a multifunctional protective mask, comprising a mask body and an ear hanging part for fixing the mask body, wherein the mask body comprises an inner layer, an intermediate layer and a surface layer from the inside to the outside, wherein the inner layer is made of cotton antibacterial woven plain cloth, the intermediate layer is made of activated carbon cloth, and the surface layer is made of triple-proof antibacterial woven fabric, and a replaceable filter is arranged between the surface layer and the intermediate layer, and the filter is made of meltblown cloth with a filtering effect greater than 95%.

The middle layer of activated carbon cloth is made of polyester staple fiber with a fineness of 1-1.5 dtex and a length of 35-38 mm; the warp yarn of the surface layer triple-proof antibacterial woven fabric is pure cotton yarn, and the weft yarn is a blended antibacterial yarn of chitin fiber, seaweed fiber and mulberry fiber.

The surface layer of the mask body is provided with a zipper, and the seam between the zipper and the surface layer is processed by a glue pressing process.

The outer ring of the mask body is rolled with a surface layer of triple-proof antibacterial woven fabric, and the upper and lower stops are fixed with sleeves, and a nose clip for fitting the mask body to the wearer's nose is arranged inside the rolled edge.

The ear-hanging part comprises an ear strap and a silicone adjustment buckle for adjusting the tightness of the ear strap.

The preparation of the surface layer triple-proof antibacterial woven fabric comprises the following steps:

Ⅰ. Warp

(1) Yarn selection: The warp yarn is made of 40-45s pure cotton yarn, which is used after the warp yarn, double twisting, shaping, slitting and reeding treatment;

Ⅱ. Weft yarn

(2) Yarn selection: The weft yarn is a blended antibacterial yarn of chitin fiber, seaweed fiber and mulberry fiber with a tex of 14.5-16.5.

(2.1) Fiber selection: chitosan fiber with a fiber fineness of 1.8-2.2 dtex and a fiber length of 35-38 mm; seaweed fiber with a fiber fineness of 2.6-2.78 dtex and a fiber length of 36-38 mm; and mulberry fiber with a fiber fineness of 2.6-2.65 dtex and a fiber length of 20-22 mm;

(2.2) Fiber pretreatment: chitosan fiber and seaweed fiber were pretreated with an antistatic agent at a dosage of 0.3%-0.4% and an emulsified oil at a dosage of 1.1%-1.3%;

(2.3) Preparation of antibacterial yarn

a. The cotton bales are mixed according to the wet weight blending ratio of chitosan fiber being 33%-38%, the wet weight blending ratio of seaweed fiber being 27%-31%, and the wet weight blending ratio of mulberry fiber being 28%-36%;

b. Carry out the carding process according to the following process parameters: raw sliver weight 20.5-21.5g/5m, cylinder speed 310-330r/min, doffer speed 28.4-30.4r/min, licker-in speed 700-800r/min, cylinder-cover gauge 0.1-0.2mm, 0.1-0.20mm, 0.1-0.15mm, 0.1-0.15mm, 0.1-0.20mm, licker-in-cylinder gauge 0.14-0.16mm, cylinder-doffer gauge 0.1-0.13mm;

c. The first doubling process is carried out according to the yarn drying speed of 19.3-19.8g/5m, the front roller speed of 242.8-252.8r/min, the doubling number of 4-6, the drafting of 3.585-5.805 times, the back zone drafting of 0.95-1.03 times, and the roller pressure of 200-240N×300-340N×300-340N×300-340N×330-370N;

d. Carry out the second combining process according to the strip drying speed of 19.83-20.91g/5m, the front roller speed of 245.8-252.8r/min, the number of combined strands of 4-6, the drafting of 4.694-5.904 times, the rear zone drafting of 0.94-1.06 times, and the roller pressure of 200-240N×300-340N×300-340N×300-340N×330-370N;

e. The three-combination process is carried out according to the strip speed of 19.52-20.11g/5m, the front roller speed of 348.4-252.8r/min, the number of 6-8 strands, the drafting of 4.694-5.904 times, the rear zone drafting of 0.94-1.06 times, and the roller pressure of 200-240N×300-340N×300-340N×300-340N×330-370N;

III. Weaving process of woven fabrics

(1) The warp yarn and the weft yarn are woven on a loom in a plain weave with one up and one down, two heald frames are selected, and a one-reed-two-entry heald drawing method is adopted;

(2) After the fabric comes off the machine, the grey fabric is inspected, scored, and the weaving defects are marked. The defects found during the subsequent grey fabric trimming process are repaired and then put into storage;

IV. Three-proof finishing of woven fabrics

(1) Three-proofing process: The woven fabric is dipped and padded in a three-proofing finishing agent, and then dried, baked and cooled to obtain a fabric with waterproof, oil-proof and stain-proof properties. The relevant process parameters are as follows:

Three-proof finishing agent: 20-40g/L;

pH: 5-6;

Catalyst: 1-2g/L;

Rolling rate: 65%-75%;

Drying temperature: 90-110℃;

Baking temperature: 150-170℃;

Baking time: 40-60s;

(2) Antibacterial finishing of woven fabrics: The above three-proof fabrics are dipped in an antibacterial agent for padding finishing, and then dried, baked and cooled to obtain fabrics with antibacterial function. The relevant process parameters are as follows:

Antimicrobial agent AG300: 10-20 g/L;

Cross-linking agent: 2-3 g/L;

pH: 7-8;

Rolling rate: 65%-75%;

Drying temperature: 100-120℃;

Baking temperature: 170-190℃;

Baking time: 140-160s.

The preparation of the intermediate layer activated carbon cloth comprises the following steps:

(1) Raw material selection: Use polyester staple fiber with a fineness of 1-1.5 dtex and a length of 36-38 mm as the raw material;

(2) Carding: After opening and removing impurities, polyester staple fibers are carded into a web. The relevant process parameters are: fine opening and feeding speed 0.15-0.25 m/min, cotton box feeding speed 0.15-0.25 m/min, doffer speed 23.52-24.73 m/min, impurity speed 15.86-16.35 m/min, cotton feeding speed 0.58-0.73 m/min, web laying oblique curtain speed 12.98-13.86 m/min, pulley speed 8.96-9.58 m/min, bottom curtain output speed 0.96-1.02 m/min;

(3) Pre-needling reinforcement: The fiber web is pre-needled, and the pre-needling reinforcement parameters are: needle density 4000-4500 pieces/m, needle frequency 16-18Hz, feed speed 0.8-1m/min, needle depth 4-6mm, and needle density 480-486 times/cm2;

(4) Fiber web impregnation: The fiber web that has been pre-needled and reinforced is immersed in the impregnation liquid, and then the liquid is removed and the fiber web is dried. The temperature is first increased from 0°C to 150°C at a rate of 5°C/min, then decreased from 150°C to 0°C at a rate of 5°C/min, and then increased from 0°C to 140°C at a rate of 5°C/min. The mass ratio of activated carbon to impregnation liquid is 1:25-1:15.

The preparation of the inner layer all-cotton antibacterial woven plain fabric comprises the following steps:

(1) The cotton woven plain fabric is subjected to antibacterial finishing by a padding process, and then dried, baked, and cooled to obtain the cotton antibacterial woven plain fabric. The process parameters for the antibacterial finishing are as follows:

Antimicrobial agent: 10-20 g/L;

Cross-linking agent: 2-3 g/L;

pH: 7-8;

Rolling rate: 65%-75%;

Drying temperature: 100-120℃;

Baking temperature: 170-190℃;

Baking time: 140-160s.

Compared with the prior art, the present invention has the following advantages:

1. Due to the emergence of the new coronavirus, the production of masks is in short supply. This mask can be produced quickly. Through the replaceable filter (melt-blown cloth insert of medical standard), ordinary masks can be upgraded to masks that meet medical performance at any time. The replacement filter is convenient for better recycling. The mask body is highly durable and can also be recycled.

2. The mask body of the present invention has a three-layer structure. The first layer is made of triple-proof antibacterial cotton polyester cloth, the second layer is made of activated carbon filter cloth, and the third layer is made of antibacterial cotton cloth. The mask can filter particles above 0.3μm, and the filtering effect is up to 99%. The air permeability is better when breathing, the filtering efficiency is high, the air permeability is high, and the wearing is comfortable. It can be folded and carried conveniently. The fabric can effectively physically isolate water-based, oily particles and blood, etc., has a lasting protective force, and can comprehensively protect the respiratory system.

3. The mask of the present invention is designed to fit the facial curve, has good air permeability and high protective performance.

4. The seam between the surface layer of the mask body and the zipper of the present invention is processed by a glue pressing process. By heating the glue film and directly pressing it on the seam, water can be prevented from entering through the pinhole. The glue pressing is flat and tight, and the glue is evenly applied, which can effectively prevent rainwater from penetrating through the seam and enhance the long-term protection. In this way, it can be used as a protective medical mask to replace the filter chip.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic structural diagram of a multifunctional protective mask of the present invention.

FIG. 2 is a structural exploded view of the multifunctional protective mask body of the present invention.

FIG3 is a diagram of the organization of the three-proof antibacterial cotton polyester fabric of the multifunctional protective mask of the present invention.

FIG. 4 is a pattern diagram of the triple-proof antibacterial cotton polyester fabric of the multifunctional protective mask of the present invention.

FIG5 is a reeding diagram of the three-proof antibacterial cotton polyester fabric of the multifunctional protective mask of the present invention

In the figure: 1-mask body; 2-ear hook; 3-zipper; 4-nose clip; 1-1-inner layer; 1-2-middle layer; 1-3-surface layer; 21-ear straps; 22-silicone adjustment buckle.

DETAILED DESCRIPTION

The specific implementation of the present invention is described in detail below in conjunction with the technical scheme and the accompanying drawings.

Example 1

As shown in Figure 1, a multifunctional protective mask includes a mask body 1 and an ear hanging part 2 for fixing the mask body 1. The mask body 1 includes an inner layer 1-1, an intermediate layer 1-2 and a surface layer 1-3 from the inside to the outside, wherein the inner layer 1-1 is made of cotton antibacterial woven plain cloth, the intermediate layer 1-2 is made of activated carbon cloth, and the surface layer 1-3 is made of triple-proof antibacterial woven fabric. A replaceable filter is provided between the surface layer 1-3 and the intermediate layer 1-2, and the filter is made of melt-blown cloth with a filtration effect of 96%.

The middle layer 1-2 activated carbon cloth is made of polyester staple fiber with a fineness of 1 dtex and a length of 35 mm; the surface layer 1-3 triple-proof antibacterial woven fabric has a warp yarn of pure cotton yarn and a weft yarn of a blended antibacterial yarn of chitin fiber, seaweed fiber and mulberry fiber.

The surface layer 1-3 of the mask body 1 is provided with a zipper 3, and the seam between the zipper 3 and the surface layer 1-3 is processed by a glue pressing process.

The outer ring of the mask body 1 is edged with a surface layer 1-3 of triple-proof antibacterial woven fabric, and the upper and lower stops are fixed with sleeve joints, and a nose clip 4 for fitting the mask body 1 to the wearer's nose is provided inside the edge.

The ear-hanging portion 2 includes an ear strap 21 and a silicone adjustment buckle 22 for adjusting the tightness of the ear strap 21 .

The preparation of the surface layer 1-3 triple-proof antibacterial woven fabric comprises the following steps:

Ⅰ. Warp

(1) Yarn selection: The warp yarn is made of 40s pure cotton yarn, which is used after the warp yarn, double twisting, shaping, slitting warping and reeding treatment;

Ⅱ. Weft yarn

(2) Yarn selection: The weft yarn is a 14.5tex blended antibacterial yarn of chitin fiber, seaweed fiber and mulberry fiber (40/30/30). This yarn has excellent antibacterial and antimicrobial properties and is suitable for antibacterial medical yarn.

(2.1) Fiber selection: chitin fiber with a fiber fineness of 1.8 dtex and a fiber length of 35 mm was selected; seaweed fiber with a fiber fineness of 2.6 dtex and a fiber length of 36 mm and mulberry fiber with a fiber fineness of 2.6 dtex and a fiber length of 20 mm were selected;

(2.2) Fiber pretreatment: chitosan fiber and seaweed fiber were pretreated with 0.3% antistatic agent (HKD-226 from Hangzhou Institute of Chemical Engineering) and 1.1% emulsified oil (HFAE15-5 emulsified oil);

(2.3) Preparation of antibacterial yarn

a. The cotton bales are mixed according to the wet weight blending ratio of chitin fiber being 33%, the wet weight blending ratio of seaweed fiber being 31%, and the wet weight blending ratio of mulberry fiber being 36%;

b. Carry out the carding process according to the following process parameters: raw sliver basis weight 20.5g/5m, cylinder speed 310r/min, doffer speed 28.4r/min, licker-in speed 700r/min, cylinder-cover gauge 0.1mm, 0.1mm, 0.1mm, 0.1mm, 0.1mm, licker-in cylinder gauge 0.14mm, cylinder-doffer gauge 0.1mm;

c. The first doubling process is carried out according to the yarn speed of 19.3g/5m, the front roller speed of 242.8r/min, the doubling number of 4, the drafting of 3.585 times, the back zone drafting of 0.95 times, and the roller pressure of 200N×300N×300N×300N×330N;

d. The second doubling process is carried out according to the yarn drying speed of 19.83g/5m, the front roller speed of 245.8r/min, the doubling number of 4, the drafting of 4.694 times, the back zone drafting of 0.94 times, and the roller pressure of 200N×300N×300N×300N×330N;

e. The three-folding process is carried out according to the strip speed of 19.52g/5m, the front roller speed of 348.4r/min, the number of folding of 6, the drafting of 4.694 times, the rear zone drafting of 0.94 times, and the roller pressure of 200N×300N×300N×300N×330N;

III. Weaving process of woven fabrics

(1) The warp yarn and the weft yarn are woven in a plain weave with one up and one down, two heald frames are selected, and a one-reed-two-entry heald drawing method is adopted, as shown in Figure 3-5;

(2) After the fabric comes off the machine, the grey fabric is inspected, scored, and the weaving defects are marked. The defects found during the subsequent grey fabric trimming process are repaired and then put into storage;

IV. Three-proof finishing of woven fabrics

(1) Three-proofing process: The woven fabric is dipped and padded in a three-proofing finishing agent, and then dried, baked and cooled to obtain a fabric with waterproof, oil-proof and stain-proof properties. The relevant process parameters are as follows:

Three-proof finishing agent: 20g/L;

pH: 5;

Catalyst: 2g/L;

Rolling rate: 70%;

Drying temperature: 100℃;

Baking temperature: 160℃;

Baking time: 50s;

(2) Antibacterial finishing of woven fabrics: The above three-proof fabrics are dipped in an antibacterial agent for padding finishing, and then dried, baked and cooled to obtain fabrics with antibacterial function. The relevant process parameters are as follows:

Antimicrobial agent AG300: 10 g/L;

Cross-linking agent TMPTMA: 2 g/L;

pH: 7;

Rolling rate: 70%;

Drying temperature: 110℃;

Baking temperature: 180°C;

Baking time: 150s.

The preparation of the intermediate layer 1-2 activated carbon cloth comprises the following steps:

(1) Raw material selection: Use polyester staple fiber with a fineness of 1 dtex and a length of 36 mm as the raw material;

(2) Carding: After opening and removing impurities, polyester staple fibers are carded into a web by a BG218 double doffer random carding machine. The relevant process parameters are: fine opening and feeding speed 0.15 m/min, cotton box feeding speed 0.15 m/min, doffer speed 23.52 m/min, random speed 15.86 m/min, cotton feeding speed 0.58 m/min, web laying oblique curtain speed 12.98 m/min, pulley speed 8.96 m/min, bottom curtain output speed 0.96 m/min;

(3) Pre-needling reinforcement: The fiber web was pre-needled using a WFC100 needle punching machine. The pre-needling reinforcement parameters were: a needle density of 4000 pieces/m, a needle frequency of 16 Hz, a feed speed of 0.8 m/min, a needle depth of 4 mm, and a needle density of 480 times/cm2.

(4) Fiber web impregnation: The fiber web after pre-needling reinforcement is impregnated in the impregnation liquid, and then the liquid is removed and dried. The temperature is first increased from 0°C to 150°C at a rate of 5°C/min, then decreased from 150°C to 0°C at a rate of 5°C/min, and then increased from 0°C to 140°C at a rate of 5°C/min. The mass ratio of activated carbon to impregnation liquid is 1:25, the concentration of the adhesive is 1%, and the adhesive is 17-88 type polyvinyl alcohol powder;

The preparation of the inner layer 1-1 all-cotton antibacterial woven plain fabric comprises the following steps:

(1) The cotton woven plain fabric is subjected to antibacterial finishing by a padding process, and then dried, baked, and cooled to obtain the cotton antibacterial woven plain fabric. The process parameters for the antibacterial finishing are as follows:

Antimicrobial agent AG300: 10 g/L;

Cross-linking agent TMPTMA: 2 g/L;

pH: 7;

Rolling rate: 70%;

Drying temperature: 110℃;

Baking temperature: 180°C;

Baking time: 150s.

Example 2

A multifunctional protective mask comprises a mask body 1 and an ear hanging portion 2 for fixing the mask body 1, wherein the mask body 1 comprises an inner layer 1-1, an intermediate layer 1-2 and a surface layer 1-3 from the inside to the outside, wherein the inner layer 1-1 is made of cotton antibacterial woven plain fabric, the intermediate layer 1-2 is made of activated carbon cloth, and the surface layer 1-3 is made of triple-proof antibacterial woven fabric, and a replaceable filter sheet is arranged between the surface layer 1-3 and the intermediate layer 1-2, and the filter sheet is made of melt-blown cloth with a filtering effect of 96%.

The intermediate layer 1-2 activated carbon cloth is made of polyester staple fiber with a fineness of 1.25dtex and a length of 36mm; the surface layer 1-3 triple-proof antibacterial woven fabric has a warp yarn of pure cotton yarn and a weft yarn of a blended antibacterial yarn of chitin fiber, seaweed fiber and mulberry fiber.

The surface layer 1-3 of the mask body 1 is provided with a zipper 3, and the seam between the zipper 3 and the surface layer 1-3 is processed by a glue pressing process.

The outer ring of the mask body 1 is edged with a surface layer 1-3 of triple-proof antibacterial woven fabric, and the upper and lower stops are fixed with sleeve joints, and a nose clip 4 for fitting the mask body 1 to the wearer's nose is provided inside the edge.

The ear-hanging portion 2 includes an ear strap 21 and a silicone adjustment buckle 22 for adjusting the tightness of the ear strap 21 .

The preparation of the surface layer 1-3 triple-proof antibacterial woven fabric comprises the following steps:

Ⅰ. Warp

(1) Yarn selection: The warp yarn is made of 42s pure cotton yarn, which is used after the warp yarn, double twisting, shaping, slitting warping and reeding treatment;

Ⅱ. Weft yarn

(2) Yarn selection: The weft yarn is a 15.5tex blended antibacterial yarn of chitin fiber, seaweed fiber and mulberry fiber (40/30/30). This yarn has excellent antibacterial and antimicrobial properties and is suitable for antibacterial medical yarn.

(2.1) Fiber selection: chitosan fiber with a fiber fineness of 2.0 dtex and a fiber length of 36 mm was selected; seaweed fiber with a fiber fineness of 2.7 dtex and a fiber length of 37 mm and mulberry fiber with a fiber fineness of 2.62 dtex and a fiber length of 21 mm were selected;

(2.2) Fiber pretreatment: chitin fiber and seaweed fiber were pretreated with an antistatic agent (HKD-226 from Hangzhou Institute of Chemical Engineering) at a dosage of 0.35% and an emulsified oil (HFAE15-5 emulsified oil) at a dosage of 1.2%;

(2.3) Preparation of antibacterial yarn

a. The cotton bales are mixed according to the wet weight blending ratio of chitin fiber being 38%, the wet weight blending ratio of seaweed fiber being 29%, and the wet weight blending ratio of mulberry fiber being 33%;

b. Carry out the carding process according to the process parameters of raw sliver weight 21g/5m, cylinder speed 320r/min, doffer speed 29.4r/min, licker-in speed 750r/min, cylinder-cover gauge 0.15mm, 0.15mm, 0.15mm, 0.15mm, 0.15mm, licker-in-cylinder gauge 0.15mm, cylinder-doffer gauge 0.12mm;

c. The first doubling process is carried out according to the yarn speed of 19.5g/5m, the front roller speed of 246r/min, the doubling number of 5, the drafting of 4.585 times, the back zone drafting of 1.0 times, and the roller pressure of 220N×320N×320N×320N×350N;

d. The second doubling process is carried out according to the yarn drying speed of 20g/5m, the front roller speed of 248.8r/min, the doubling number of 5, the drafting of 5 times, the back zone drafting of 1.0 times, and the roller pressure of 220N×320N×320N×320N×350N;

e. The three-folding process is carried out according to the following conditions: 20g/5m yarn speed, 350.4r/min front roller speed, 7 folding numbers, 5 times drafting, 1.0 times rear zone drafting, and 220N×320N×320N×320N×350N roller pressure;

III. Weaving process of woven fabrics

(1) The warp yarn and the weft yarn are woven on a loom in a plain weave with one up and one down, two heald frames are selected, and a one-reed-two-entry heald drawing method is adopted;

(2) After the fabric comes off the machine, the grey fabric is inspected, scored, and the weaving defects are marked. The defects found during the subsequent grey fabric trimming process are repaired and then put into storage;

IV. Three-proof finishing of woven fabrics

(1) Three-proofing process: The woven fabric is dipped and padded in a three-proofing finishing agent, and then dried, baked and cooled to obtain a fabric with waterproof, oil-proof and stain-proof properties. The relevant process parameters are as follows:

Three-proof finishing agent: 30g/L;

pH: 5;

Catalyst: 2g/L;

Rolling rate: 70%;

Drying temperature: 100℃;

Baking temperature: 160℃;

Baking time: 50s;

(2) Antibacterial finishing of woven fabrics: The above three-proof fabrics are dipped in an antibacterial agent for padding finishing, and then dried, baked and cooled to obtain fabrics with antibacterial function. The relevant process parameters are as follows:

Antimicrobial agent AG300: 15 g/L;

Cross-linking agent TMPTMA: 3 g/L;

pH: 7;

Rolling rate: 70%;

Drying temperature: 110℃;

Baking temperature: 180°C;

Baking time: 150s.

The preparation of the intermediate layer 1-2 activated carbon cloth comprises the following steps:

(1) Raw material selection: Use polyester staple fiber with a fineness of 1.25 dtex and a length of 37 mm as the raw material;

(2) Carding: After opening and removing impurities, the polyester staple fibers are carded into a web by a BG218 double doffer random carding machine. The relevant process parameters are: fine opening and feeding speed 0.20 m/min, cotton box feeding speed 0.20 m/min, doffer speed 24 m/min, random speed 16 m/min, cotton feeding speed 0.6 m/min, web laying oblique curtain speed 13.48 m/min, pulley speed 9.26 m/min, bottom curtain output speed 1.0 m/min;

(3) Pre-needling reinforcement: The fiber web was pre-needled using a WFC100 needle punching machine. The pre-needling reinforcement parameters were: a needle density of 4200 pieces/m, a needle frequency of 17 Hz, a feed speed of 0.9 m/min, a needle depth of 5 mm, and a needle density of 482 times/cm2.

(4) Fiber web impregnation: The fiber web after pre-needling reinforcement is impregnated in the impregnation liquid, and then the liquid is removed and dried. The temperature is first increased from 0°C to 150°C at a rate of 5°C/min, then decreased from 150°C to 0°C at a rate of 5°C/min, and then increased from 0°C to 140°C at a rate of 5°C/min. The mass ratio of activated carbon to impregnation liquid is 1:20, the concentration of the adhesive is 1.5%, and the adhesive is 17-88 type polyvinyl alcohol powder;

The preparation of the inner layer 1-1 all-cotton antibacterial woven plain fabric comprises the following steps:

(1) The cotton woven plain fabric is subjected to antibacterial finishing by a padding process, and then dried, baked, and cooled to obtain the cotton antibacterial woven plain fabric. The process parameters for the antibacterial finishing are as follows:

Antimicrobial agent AG300: 15 g/L;

Cross-linking agent TMPTMA: 2.5 g/L;

pH: 7;

Rolling rate: 70%;

Drying temperature: 110℃;

Baking temperature: 180°C;

Baking time: 150s.

Example 3

A multifunctional protective mask comprises a mask body 1 and an ear hanging portion 2 for fixing the mask body 1, wherein the mask body 1 comprises an inner layer 1-1, an intermediate layer 1-2 and a surface layer 1-3 from the inside to the outside, wherein the inner layer 1-1 is made of cotton antibacterial woven plain fabric, the intermediate layer 1-2 is made of activated carbon cloth, and the surface layer 1-3 is made of triple-proof antibacterial woven fabric, and a replaceable filter sheet is arranged between the surface layer 1-3 and the intermediate layer 1-2, and the filter sheet is made of melt-blown cloth with a filtering effect of 96%.

The intermediate layer 1-2 activated carbon cloth is made of polyester staple fiber with a fineness of 1.5 dtex and a length of 38 mm; the surface layer 1-3 triple-proof antibacterial woven fabric has a warp yarn of pure cotton yarn and a weft yarn of a blended antibacterial yarn of chitin fiber, seaweed fiber and mulberry fiber.

The surface layer 1-3 of the mask body 1 is provided with a zipper 3, and the seam between the zipper 3 and the surface layer 1-3 is processed by a glue pressing process.

The outer ring of the mask body 1 is edged with a surface layer 1-3 of triple-proof antibacterial woven fabric, and the upper and lower stops are fixed with sleeve joints, and a nose clip 4 for fitting the mask body 1 to the wearer's nose is provided inside the edge.

The ear-hanging portion 2 includes an ear strap 21 and a silicone adjustment buckle 22 for adjusting the tightness of the ear strap 21 .

The preparation of the surface layer 1-3 triple-proof antibacterial woven fabric comprises the following steps:

Ⅰ. Warp

(1) Yarn selection: The warp yarn is made of 45s pure cotton yarn, which is used after the warp yarn, double twisting, shaping, slitting warping and reeding treatment;

Ⅱ. Weft yarn

(2) Yarn selection: The weft yarn is a 16.5tex blended antibacterial yarn of chitin fiber, seaweed fiber and mulberry fiber (40/30/30). This yarn has excellent antibacterial and antimicrobial properties and is suitable for antibacterial medical yarn.

(2.1) Fiber selection: chitosan fiber with a fiber fineness of 2.2 dtex and a fiber length of 38 mm was selected; seaweed fiber with a fiber fineness of 2.78 dtex and a fiber length of 38 mm and mulberry fiber with a fiber fineness of 2.65 dtex and a fiber length of 22 mm were selected;

(2.2) Fiber pretreatment: chitin fiber and seaweed fiber were pretreated with 0.4% antistatic agent (HKD-226 from Hangzhou Institute of Chemical Engineering) and 1.3% emulsified oil (HFAE15-5 emulsified oil);

(2.3) Preparation of antibacterial yarn

a. The cotton bales are mixed according to the wet weight blending ratio of chitin fiber being 38%, the wet weight blending ratio of seaweed fiber being 27%, and the wet weight blending ratio of mulberry fiber being 35%;

b. Carry out the carding process according to the process parameters of raw sliver weight 21.5g/5m, cylinder speed 330r/min, doffer speed 30.4r/min, licker-in speed 800r/min, cylinder-cover gauge 0.2mm, 0.20mm, 0.15mm, 0.15mm, 0.20mm, licker-in-cylinder gauge 0.16mm, cylinder-doffer gauge 0.13mm;

c. The first doubling process is carried out according to the yarn speed of 19.8g/5m, the front roller speed of 252.8r/min, the doubling number of 6, the drafting of 5.805 times, the back zone drafting of 1.03 times, and the roller pressure of 240N×340N×340N×340N×370N;

d. The second doubling process is carried out according to the yarn speed of 20.91g/5m, the front roller speed of 252.8r/min, the doubling number of 6, the drafting of 5.904 times, the back zone drafting of 1.06 times, and the roller pressure of 240N×340N×340N×340N×370N;

e. The three-folding process is carried out according to the yarn drying speed of 20.11g/5m, the front roller speed of 252.8r/min, the number of folding of 8, the drafting of 5.904 times, the rear zone drafting of 1.06 times, and the roller pressure of 240N×340N×340N×340N×370N;

III. Weaving process of woven fabrics

(1) The warp yarn and the weft yarn are woven on a loom in a plain weave with one up and one down, two heald frames are selected, and a one-reed-two-entry heald drawing method is adopted;

(2) After the fabric comes off the machine, the grey cloth is inspected, scored, and the weaving defects are marked. The defects found during the subsequent grey cloth trimming process are repaired and then put into storage;

IV. Three-proof finishing of woven fabrics

(1) Three-proofing process: The woven fabric is dipped and padded in a three-proofing finishing agent, and then dried, baked and cooled to obtain a fabric with waterproof, oil-proof and stain-proof properties. The relevant process parameters are as follows:

Three-proof finishing agent: 40g/L;

pH: 6;

Catalyst: 2g/L;

Rolling rate: 70%;

Drying temperature: 100℃;

Baking temperature: 160℃;

Baking time: 50s;

(2) Antibacterial finishing of polyester-cotton fabric: The above three-proof fabric is padded in an antibacterial agent, and then dried, baked and cooled to obtain a fabric with antibacterial function. The relevant process parameters are as follows:

Antimicrobial agent AG300: 20g/L;

Cross-linking agent TMPTMA: 3 g/L;

pH: 8;

Rolling rate: 70%;

Drying temperature: 110℃;

Baking temperature: 180°C;

Baking time: 150s.

The preparation of the intermediate layer 1-2 activated carbon cloth comprises the following steps:

(1) Raw material selection: Use polyester staple fiber with a fineness of 1.5 dtex and a length of 38 mm as the raw material;

(2) Carding: After opening and removing impurities, the polyester staple fibers are carded into a web by a BG218 double doffer random carding machine. The relevant process parameters are: fine opening and feeding speed 0.25 m/min, cotton box feeding speed 0.25 m/min, doffer speed 24.73 m/min, random speed 16.35 m/min, cotton feeding speed 0.73 m/min, web laying oblique curtain speed 13.86 m/min, pulley speed 9.58 m/min, bottom curtain output speed 1.02 m/min;

(3) Pre-needling reinforcement: The fiber web was pre-needled using a WFC100 needle punching machine. The pre-needling reinforcement parameters were: a needle density of 4500 pieces/m, a needle punching frequency of 18 Hz, a feed speed of 1 m/min, a needle punching depth of 6 mm, and a needle punching density of 486 times/cm2.

(4) Fiber web impregnation: The fiber web after pre-needling reinforcement is impregnated in the impregnation liquid, and then the liquid is removed and dried. The temperature is first increased from 0°C to 150°C at a rate of 5°C/min, then decreased from 150°C to 0°C at a rate of 5°C/min, and then increased from 0°C to 140°C at a rate of 5°C/min. The binder concentration is 2%, the mass ratio of activated carbon to impregnation liquid is 1:15, and the binder is 17-88 type polyvinyl alcohol powder;

The preparation of the inner layer 1-1 all-cotton antibacterial woven plain fabric comprises the following steps:

(1) The cotton woven plain fabric is subjected to antibacterial finishing by a padding process, and then dried, baked, and cooled to obtain the cotton antibacterial woven plain fabric. The process parameters for the antibacterial finishing are as follows:

Antimicrobial agent AG300: 20g/L;

Cross-linking agent TMPTMA: 3 g/L;

pH: 8;

Rolling rate: 70%;

Drying temperature: 110℃;

Baking temperature: 180°C;

Baking time: 150s.

The three-proof antibacterial woven fabric of Example 1 of the present invention was evaluated for its three-proof performance, as shown in Table 1 below, wherein the waterproof performance was tested according to GB/T 4745-1997 "Test for Determination of Surface Wetness Resistance of Textile Fabrics by Water Spraying", and the waterproof performance was divided into 5 levels, of which 5 was the best and 1 was the worst; the oil-proof performance was tested according to GB/T 19977-2005 "Test for Oil Repellency and Hydrocarbon Resistance of Textiles", and the oil-proof performance was divided into 5 levels, of which 5 was the best and 1 was the worst; the antifouling performance was tested according to AATCC 130-2010 "Test Method for Ease of Stain Removal of Textiles", and the antifouling performance was divided into 5 levels, of which 5 was the best and 1 was the worst.

Table 1 Evaluation of the three-proof performance of the three-proof antibacterial woven fabric in Example 1

As can be seen from Table 1 above, the waterproof, oil-proof and antifouling properties of the three-proof antibacterial woven fabric of the surface layer 1-3 in Example 1 of the present application only reach level 3.5, which is lower than the three-proof performance level of the fabric with a single three-proof finishing. This is because the amount of the three-proof finishing agent used in this experiment is small, and the waterproof, oil-proof and antifouling properties of the fabric only need to reach level 3.5. Because the amount of the three-proof finishing agent used is too much, it will affect the next step of antibacterial finishing and reduce the antibacterial performance of the fabric. The three-proof finishing agent is a hydrocarbon resin containing organic fluorine substances. The textiles finished with the waterproof, oil-proof and antifouling finishing agent have a lower surface energy. Since the surface energy of the material has a non-stick property (similar to the surface of a lotus leaf), it can effectively prevent contamination caused by the adsorption of liquids such as sweat, saliva, and tea.

The antibacterial property of the fabric in Example 1 of the present application was tested by the AATCCQ agar diffusion method. The polyester-cotton antibacterial fabric can inhibit the growth and reproduction of Klebsiella pneumoniae in contact with the surface of the sample and the agar culture medium. Moreover, since the antibacterial substances contained in the sample are dissolved and diffused in the agar culture medium, an area that inhibits bacterial growth is formed around the sample, namely, an "inhibitory ring", which means that the sample has certain antibacterial properties.

The above description is only for the preferred embodiments of the present invention, which should not be construed as limiting the claims. Those skilled in the art of the present invention may make various modifications or additions to the specific embodiments described, or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined in the appended claims.

Claims (6)

1. The multifunctional protective mask comprises a mask body (1) and a hanging lug part (2) for fixing the mask body (1), and is characterized in that the mask body (1) sequentially comprises an inner layer (1-1), an intermediate layer (1-2) and a surface layer (1-3) from inside to outside, wherein the inner layer (1-1) adopts all-cotton antibacterial woven plain cloth, the intermediate layer (1-2) adopts activated carbon cloth, the surface layer (1-3) adopts three-proofing antibacterial woven fabric, a replaceable filter disc is arranged between the surface layer (1-3) and the intermediate layer (1-2), and the filter disc adopts melt-blown cloth with a filter effect of more than 95%;

the middle layer (1-2) activated carbon cloth takes terylene short fiber with fineness of 1-1.5dtex and length of 35-38mm as a raw material; the warp yarn of the three-proofing antibacterial woven fabric of the surface layer (1-3) is all-cotton yarn, and the weft yarn is blended antibacterial yarn of chitin fiber, alginate fiber and mulberry fiber;

the preparation of the three-proofing antibacterial woven fabric of the surface layer (1-3) comprises the following steps:

i warp yarn

(1) Yarn selection: the warp yarn is selected from 40-45s cotton yarn, and is subjected to meridian yarn, double twisting, shaping, sectional warping and reed threading treatment for standby;

II, weft yarn

(2) Yarn selection: the weft yarn is a blended antibacterial yarn of chitin fiber, alginate fiber and mulberry fiber with the thickness of 14.5-16.5 tex;

(2.1) selection of fibers: selecting chitin fiber with fiber fineness of 1.8-2.2dtex and fiber length of 35-38 mm; selecting alginate fibers with fiber fineness of 2.6-2.78dtex and fiber length of 36-38mm and mulberry fibers with fiber fineness of 2.6-2.65dtex and fiber length of 20-22 mm;

(2.2) pretreatment of fibers: pretreating chitin fiber and alginate fiber by using antistatic agent with a feeding amount of 0.3% -0.4% and emulsifying oil with a feeding amount of 1.1% -1.3%;

(2.3) preparation of antibacterial yarn

a. Mixing cotton bales according to the wet weight blending ratio of 33% -38% of chitin fiber, 27% -31% of alginate fiber and 28% -36% of mulberry fiber;

b. according to the technological parameters of raw sliver quality ration of 20.5-21.5g/5m, cylinder speed of 310-330r/min, doffer speed of 28.4-30.4r/min, licker-in speed of 700-800r/min, cylinder-cover plate gauge of 0.1-0.2mm, 0.1-0.20mm, 0.1-0.15mm, 0.1-0.20mm, licker-in-cylinder gauge of 0.14-0.16mm and cylinder-doffer gauge of 0.1-0.13mm, cotton carding process is carried out;

c. the head merging process is carried out by pressurizing rollers with the speed of 19.3-19.8g/5m, the speed of 242.8-252.8r/min of front rollers, the merging number of 4-6 roots, the drafting of 3.585-5.805 times, the rear zone drafting of 0.95-1.03 times and the roller pressurizing of 200-240N multiplied by 300-340N multiplied by 330-370N;

d. the second merging process is carried out by pressurizing the rollers with the drying speed of 19.83-20.91g/5m, the front roller speed of 245.8-252.8r/min, the merging number of 4-6, the drafting of 4.694-5.904 times, the rear zone drafting of 0.94-1.06 times and the roller compression of 200-240N multiplied by 300-340N multiplied by 330-370N;

e. according to the yarn speed of 19.52-20.11g/5m, the front roller speed of 348.4-252.8r/min, the combination number of 6-8 roots, the drafting of 4.694-5.904 times, the rear zone drafting of 0.94-1.06 times, and the roller pressurizing of 200-240 Nx300-340 Nx330-370N, three combining procedures are carried out;

III, woven fabric weaving process

(1) Weaving warp yarns and weft yarns on a loom according to a plain weave of one upper loom and one lower loom, selecting two heald frames, and adopting a reed two-in drafting mode;

(2) After the fabric is taken off the machine, checking and grading the grey cloth after the machine is taken off, marking the weaving defects, trimming the checked defects in the subsequent grey cloth trimming process, and warehousing;

IV, three-proofing finishing of woven fabric

(1) Three-proofing process treatment: padding and finishing the woven fabric in a three-proofing finishing agent, and drying, baking and cooling to obtain the fabric with waterproof, oil-proof and antifouling properties, wherein the related technological parameters are as follows:

three-proofing finishing agent: 20-40g/L;

pH value: 5-6;

catalyst: 1-2g/L;

rolling surplus rate: 65% -75%;

drying temperature: 90-110 ℃;

baking temperature: 150-170 ℃;

baking time: 40-60s;

(2) Antibacterial finishing of the woven fabric: padding and finishing the three-proofing fabric in an antibacterial agent, and drying, baking and cooling to obtain the fabric with an antibacterial function, wherein the related technological parameters are as follows:

antimicrobial AG300:10-20g/L;

crosslinking agent: 2-3g/L;

pH value: 7-8;

rolling surplus rate: 65% -75%;

drying temperature: 100-120 ℃;

baking temperature: 170-190 ℃;

baking time: 140-160s.

2. The multifunctional protective mask according to claim 1, wherein the surface layer (1-3) of the mask body (1) is provided with a zipper (3), and the seam between the zipper (3) and the surface layer (1-3) is treated by adopting a glue pressing process.

3. The multifunctional protective mask according to claim 1, wherein the outer ring of the mask body (1) is formed by edging a face layer (1-3) three-proofing antibacterial woven fabric, the upper and lower seam-tops are fixed by crimping, and a nose clip (4) for attaching the mask body (1) to the nose of a wearer is arranged in the edging.

4. The multifunctional protective mask according to claim 1, wherein the ear hanging part (2) comprises an ear strap (21) and a silica gel adjusting buckle (22) for adjusting the tightness of the ear strap (21).

5. The multifunctional protective mask according to claim 1, wherein the preparation of the intermediate layer (1-2) activated carbon cloth comprises the following steps:

(1) Raw material selection: selecting terylene short fiber with fineness of 1-1.5dtex and length of 36-38mm as raw material;

(2) Carding and forming: carding and forming a net after opening and impurity removal of the polyester staple fibers, wherein the related technological parameters are as follows: the fine opening feeding speed is 0.15-0.25m/min, the cotton box feeding speed is 0.15-0.25m/min, the doffer speed is 23.52-24.73m/min, the cluttering speed is 15.86-16.35m/min, the cotton feeding speed is 0.58-0.73m/min, the lapping inclined curtain speed is 12.98-13.86m/min, the pulley speed is 8.96-9.58m/min, and the bottom curtain output speed is 0.96-1.02m/min;

(3) Pre-needling reinforcement: pre-needling the fiber web, wherein the pre-needling reinforcement parameters are needling density 4000-4500 pieces/m, needling frequency 16-18Hz, cloth feeding speed 0.8-1m/min, needling depth 4-6mm, and needling density 480-486 times/square centimeter;

(4) Web impregnation: immersing the fiber net after pre-needling reinforcement in an impregnating solution, removing the impregnating solution and drying, firstly raising the temperature from 0 ℃ to 150 ℃ at the speed of 5 ℃/min, then lowering the temperature from 150 ℃ to 0 ℃ at the speed of 5 ℃/min, and then raising the temperature from 0 ℃ to 140 ℃ at the speed of 5 ℃/min, wherein the mass ratio of the activated carbon to the impregnating solution is 1:25-1:15.

6. the multifunctional protective mask according to claim 1, wherein the preparation of the inner layer (1-1) of all-cotton antibacterial woven plain cloth comprises the following steps:

(1) The all-cotton woven plain fabric is subjected to antibacterial finishing through padding technology, and is dried, baked and cooled to obtain the all-cotton antibacterial woven plain fabric, wherein the technological parameters during antibacterial finishing are as follows:

antibacterial agent: 10-20g/L;

crosslinking agent: 2-3g/L;

pH value: 7-8;

rolling surplus rate: 65% -75%;

drying temperature: 100-120 ℃;

baking temperature: 170-190 ℃;

baking time: 140-160s.