CN110623347A - Special gum dipping glove for welding and preparation method thereof - Google Patents

Abstract

The invention discloses a pair of special-purpose dipped gloves for welding and a preparation method thereof. The sleeve extends to the back of the hand until the fingertips of five fingers form a protection of a cortex shield on the back of the hand, and the fingers and the cortex shield are fixed by the fingertips on the inner surface of the cortex shield. The hand protection part comprises a glove liner which is woven by flame-retardant fibers, a gum dipping coating is arranged on the outer surface of the glove liner, and bubbles are contained in the gum dipping coating to enable the interior of the gum dipping coating to be of a honeycomb structure. The advantages of the gum dipping gloves and the leather splicing and sewing gloves are combined, and the defects that the traditional sewing and welding gloves are thick and hard in hand feeling, heavy and inflexible in working operation and airtight in hand covering are overcome for many years.

Description

Special gum dipping glove for welding and preparation method thereof

Technical Field

The invention relates to a production process of gloves, in particular to special gum dipping gloves for welding and a preparation method thereof.

Background

The special welding glove is a manual work glove for a welder, is fireproof and heat-resistant, and can provide safety protection and operation comfort for the welder. The special welding gloves in the market are leather gloves, namely the gloves sewn by leather materials such as cowhide and pigskin, have no gum dipping coating, are thick and hard in hand feeling, are very heavy, inflexible in work operation, are not air-permeable in hand covering and are worn tired, the labor intensity of a wearer is increased invisibly, and the finger sewing part is easy to wear and is broken to influence the service life. In addition, gloves are expensive to manufacture and have poor protective properties.

Disclosure of Invention

Aiming at the technical problems, the invention provides the special rubber-impregnated gloves for welding and the preparation method thereof, which combine the advantages of rubber-impregnated gloves and leather splicing and sewing gloves, solve the defects of thick and heavy hand feeling, hard touch, heavy and inflexible work operation and airtight hand covering of the traditional sewing and welding gloves for many years, have the effects of flame retardance, heat insulation, ventilation and softness, reduce the manufacturing cost and have higher protective performance.

In order to achieve the purpose, the invention adopts the following technical scheme:

the special impregnated glove for welding comprises a hand protection part and an arm protection part, wherein the hand protection part is a flame-retardant impregnated glove, the arm protection part is a leather sleeve, and a rib top of the flame-retardant impregnated glove is butted and sewn with a rib top of the sleeve.

Preferably, the sleeve extends towards the back of the hand to the tips of five fingers to form a protection of the cortical shield on the back of the hand, and the fingers and the cortical shield are fixed by finger sleeves with the width of 0.5cm-1cm on the inner surface of the cortical shield.

Preferably, the hand protection part comprises a glove liner, the glove liner is woven by flame-retardant fibers, a dipping coating is arranged on the outer surface of the glove liner, the dipping coating comprises dipping latex, a flame retardant, an active oxidant and a thickening agent, and bubbles are contained in the dipping coating to enable the inside of the dipping coating to be of a honeycomb structure.

Preferably, the glove liner is woven by 100% of the flame-retardant fibers, and the high-elasticity elastic threads are tightly wrapped in the inner layer of the glove liner at the neck cuff by the flame-retardant fibers.

Preferably, the gum dipping coating is prepared from the following raw materials in parts by weight: 100-150 parts of dipping latex, 15-52.5 parts of flame retardant, 1.5-3 parts of active oxidant, 1-3 parts of color paste and 2-4 parts of thickening agent, wherein the dipping coating contains 15-25 wt% of bubbles.

Further preferably, the dipping latex is prepared from the following raw materials in parts by weight: 100 parts of latex, 0.5-2.5 parts of sulfur, 1.5-4.5 parts of zinc oxide, 0.5-2.5 parts of accelerator and 0.5-2 parts of anti-aging agent.

Further preferably, the latex is any one of carboxylated nitrile latex, natural latex, PVC, PU and neoprene latex.

Preferably, the flame retardant consists of a TBC flame retardant and antimony trioxide, the mass ratio of the TBC flame retardant to the antimony trioxide is 2:1, and the active oxidant is sodium dodecyl benzene sulfonate.

The invention also provides a preparation method of the special dipping gloves for welding, which comprises the following steps:

(1) preparing a glove liner: 100% of the glove liner is woven by the flame-retardant fibers, and the high-elasticity elastic threads are tightly wrapped on the inner layer of the glove liner by the flame-retardant fibers at the neck cuff;

(2) preheating: sleeving the glove liner with a mold, and then preheating the glove liner in an oven to enable the temperature of the outer surface of the glove liner to reach 45-55 ℃;

(3) impregnating a coagulant: dipping the preheated glove liner and the mould into the coagulant together, and keeping the time for 0.5 to 2 seconds;

(4) dipping latex solution: dipping the glove liner adsorbed with the coagulant into a prepared latex solution in advance, and then vibrating and dripping to filter off the redundant latex solution;

(5) dipping the glove liner dipped with the latex solution and the mould into a curing foam breaker, wherein the dipping retention time is 8-15 s;

(6) drying in a drying oven at 80-120 deg.C for 60-90 min;

(7) after drying, the gloves are taken off from the hand mold for water washing, and after the water washing is completed, the gloves are dried again;

(8) cutting off the excess part which is not dipped in the flame-retardant gummed glove which is finished by the steps (1) to (7), butting the rib top of the flame-retardant gummed glove with the rib top of a leather sleeve, and sewing the rib tops together, wherein the sleeve extends to the back of the hand until the fingertips of five fingers form a leather shield-shaped protection on the back of the hand, and fixing the finger head and the leather shield by using a finger sleeve with the width of 0.5cm-1cm on the inner surface of the leather shield.

Preferably, the coagulant in step (3) is any one or more of methanol, ethanol, glacial acetic acid, calcium nitrate and calcium chloride.

Further preferably, the coagulant in step (3) is a mixed solution of methanol and calcium nitrate, and the weight ratio of calcium nitrate to methanol in the coagulant is 1-2.5: 100.

preferably, the curing and foam breaking agent in the step (5) is any one or more of methanol, ethanol, glacial acetic acid, calcium nitrate and calcium chloride.

Further preferably, the foam breaker in step (5) is a mixed solution of methanol and calcium nitrate, and the weight ratio of calcium nitrate to methanol in the foam breaker is 2-3: 50.

preferably, the specific preparation method of the latex solution in the step (4) comprises the following steps:

(1) adding sulfur, an active oxidant, an accelerator and an anti-aging agent into latex, stirring at normal temperature or under heating for 2 hours according to different emulsions, standing and storing for more than 24 hours, and filtering to obtain pre-vulcanized latex, wherein the latex is any one of carboxylated butyronitrile latex, natural latex, styrene-butadiene latex and chloroprene latex;

(2) taking pre-vulcanized latex as a base material, adding a flame retardant and an active agent, rapidly stirring by a dispersing device, continuously cutting bubbles to obtain fine bubbles with 15-25 wt% of the inner part uniformly dispersed, and then adding color paste and a thickening agent to ensure that the viscosity of the mixture is 1800mpa.s-2000 m.pas.

The beneficial technical effects of the invention are as follows:

1. the invention relates to a first-style special-purpose gum dipping glove for welding in the industry, the existing leather splicing sewing gloves have no gum dipping coating, and the advantages of the gum dipping gloves and the advantages of the leather splicing sewing gloves are combined;

2. the hand protection part is a flame-retardant impregnated glove, the glove liner is formed by weaving flame-retardant fibers, and has the effects of flame retardance, heat insulation and molten drop resistance, the outer surface of the glove liner adopts a flame-retardant impregnated coating, the flame retardant endows the glove with good flame retardance, and in addition, 15-25 wt% of bubbles are uniformly dispersed in latex, so that the inside of the impregnated coating outside the glove is of a honeycomb structure, the structure can well buffer the impact force of splashing metal particles, and the glove has the functions of ventilation, softness and filtration of part of heat radiation;

3. the arm protection part adopts a sleeve sewn by leather and extends to the whole back of the hand (including five fingers), the protection of the whole back of the hand and the five fingers is enhanced again, and the double-layer protection of the back of the hand and the fingers is realized;

4. the invention subverts the manufacturing process of the traditional welding gloves, realizes the transition of the welding gloves from the sewing process to the gum dipping process, fundamentally solves the defects of thick and hard hand feeling, heavy weight, inflexibility and airtight hand covering of the traditional sewing and welding gloves in the years, and improves the protective performance by more than 30 percent on the premise of saving the production cost by more than 30 percent.

Drawings

FIG. 1 is a schematic view of the overall structure of a pair of special-purpose dipped gloves for welding;

FIG. 2 is a schematic cross-sectional view of a finger portion of the hand protection portion of FIG. 1;

fig. 3 is a schematic structural view of the arm protecting part in fig. 1.

In the figure: 1-flame-retardant gum dipping gloves, 2-sleeves, 3-shields, 4-fingerstalls, 5-glove liners, 6-gum dipping coatings, 7-air bubbles and 8-honeycomb structures.

Detailed Description

The present invention will be further described with reference to the following specific examples.

Example 1

The special dipping glove for welding shown in fig. 1-3 comprises a hand protection part and an arm protection part, wherein the hand protection part is a flame-retardant dipping glove 1, the arm protection part is a leather sleeve 2, and a rib top of the flame-retardant dipping glove 1 is butt-jointed and sewn with a rib top of the sleeve 2. The sleeve 2 extends to the back of the hand until the fingertips of five fingers form a protection of a cortex shield 3 on the back of the hand, and the fingers and the cortex shield 3 are fixed on the inner surface of the cortex shield 3 by using fingertips 4 with the width of 0.5cm-1 cm.

The hand protection part comprises a glove liner 5, the glove liner 5 is woven by flame-retardant fibers, a dipping coating 6 is arranged on the outer surface of the glove liner 5, the dipping coating 6 comprises dipping latex, a flame retardant, an active oxidant and a thickening agent, and bubbles 7 are contained in the dipping coating 6, so that the inside of the dipping coating 6 is of a honeycomb structure 8.

The glove liner 5100% is formed by weaving the flame-retardant fibers, and the high-elasticity elastic threads are tightly wrapped in the inner layer at the neck cuff of the glove liner 5 by the flame-retardant fibers.

Example 2

The structure of the special dipping glove for welding is completely the same as that of the embodiment 1, wherein the dipping coating is prepared from the following raw materials in parts by weight: 100 parts of dipping latex, 52.5 parts of flame retardant, 3 parts of active oxidant, 3 parts of color paste and 4 parts of thickening agent, wherein the dipping coating contains 25 wt% of bubbles. The dipping latex is prepared from the following raw materials in parts by weight: 100 parts of carboxylic butyronitrile latex, 2.5 parts of sulfur, 4.5 parts of zinc oxide, 2.5 parts of accelerator and 2 parts of anti-aging agent.

The flame retardant consists of a TBC flame retardant and antimony trioxide, the mass ratio of the TBC flame retardant to the antimony trioxide is 2:1, and the active oxidant is sodium dodecyl benzene sulfonate.

The preparation method of the special dipping glove for welding comprises the following steps:

(1) preparing a glove liner: 100% of the glove liner is woven by the flame-retardant fibers, and the high-elasticity elastic threads are tightly wrapped on the inner layer of the glove liner by the flame-retardant fibers at the neck cuff;

(2) preheating: sleeving the glove liner with a mold, and then preheating the glove liner in an oven to enable the temperature of the outer surface of the glove liner to reach 45 ℃;

(3) impregnating a coagulant: dipping the preheated glove liner and the mould into the coagulant together, and keeping the mixture for 1 s;

(4) dipping latex solution: dipping the glove liner adsorbed with the coagulant into a prepared latex solution in advance, and then vibrating and dripping to filter off the redundant latex solution;

(5) dipping the glove liner dipped with the latex solution and the mould into a curing foam breaker, wherein the dipping retention time is 10 s;

(6) drying in a drying oven at 100 deg.C for 75 min;

(7) after drying, the gloves are taken off from the hand mold for water washing, and after the water washing is completed, the gloves are dried again;

(8) cutting off the excess part which is not dipped in the flame-retardant gummed glove which is finished by the steps (1) to (7), butting the rib top of the flame-retardant gummed glove with the rib top of a leather sleeve, and sewing the rib tops together, wherein the sleeve extends to the back of the hand until the fingertips of five fingers form a leather shield-shaped protection on the back of the hand, and fixing the finger head and the leather shield by using a finger sleeve with the width of 0.5cm-1cm on the inner surface of the leather shield.

The coagulant in the step (3) is a mixed solution of methanol and calcium nitrate, and the weight ratio of the calcium nitrate to the methanol in the coagulant is 1: 100.

the foam breaker in the step (5) is a mixed solution of methanol and calcium nitrate, and the weight ratio of the calcium nitrate to the methanol in the foam breaker is 2: 50.

the specific preparation method of the latex solution in the step (4) comprises the following steps:

(1) adding sulfur, an active oxidant, an accelerator and an anti-aging agent into the carboxylated nitrile latex, stirring for 2 hours at normal temperature according to different emulsions, standing and storing for more than 24 hours, and filtering to obtain pre-vulcanized latex;

(2) taking pre-vulcanized latex as a base material, adding a flame retardant and an active agent, rapidly stirring by a dispersing device, continuously cutting bubbles to obtain fine bubbles with 15-25 wt% of the inner part uniformly dispersed, and then adding color paste and a thickening agent to ensure that the viscosity of the mixture is 1800mpa.s-2000 m.pas.

Example 3

The structure of the special dipping glove for welding is completely the same as that of the embodiment 1, wherein the dipping coating is prepared from the following raw materials in parts by weight: 150 parts of dipping latex, 15 parts of flame retardant, 1.5 parts of active oxidant, 1 part of color paste and 2 parts of thickening agent, wherein the dipping coating contains 15 wt% of bubbles. The dipping latex is prepared from the following raw materials in parts by weight: 100 parts of natural latex, 0.5 part of sulfur, 1.5 parts of zinc oxide, 0.5 part of accelerator and 0.5 part of anti-aging agent.

The flame retardant consists of a TBC flame retardant and antimony trioxide, the mass ratio of the TBC flame retardant to the antimony trioxide is 2:1, and the active oxidant is sodium dodecyl benzene sulfonate.

The preparation method of the special dipping glove for welding comprises the following steps:

(1) preparing a glove liner: 100% of the glove liner is woven by the flame-retardant fibers, and the high-elasticity elastic threads are tightly wrapped on the inner layer of the glove liner by the flame-retardant fibers at the neck cuff;

(2) preheating: sleeving the glove liner with a mold, and then preheating the glove liner in an oven to enable the temperature of the outer surface of the glove liner to reach 55 ℃;

(3) impregnating a coagulant: dipping the preheated glove liner and the mould into a coagulant together, and keeping the mixture for 2 s;

(4) dipping latex solution: dipping the glove liner adsorbed with the coagulant into a prepared latex solution in advance, and then vibrating and dripping to filter off the redundant latex solution;

(5) dipping the glove liner dipped with the latex solution and the mould into a curing foam breaker for 9 s;

(6) drying in a drying oven at 105 deg.C for 60 min;

(7) after drying, the gloves are taken off from the hand mold for water washing, and after the water washing is completed, the gloves are dried again;

(8) cutting off the excess part which is not dipped in the flame-retardant gummed glove which is finished by the steps (1) to (7), butting the rib top of the flame-retardant gummed glove with the rib top of a leather sleeve, and sewing the rib tops together, wherein the sleeve extends to the back of the hand until the fingertips of five fingers form a leather shield-shaped protection on the back of the hand, and fixing the finger head and the leather shield by using a finger sleeve with the width of 0.5cm-1cm on the inner surface of the leather shield.

The coagulant in the step (3) is a mixed solution of methanol and calcium nitrate, and the weight ratio of the calcium nitrate to the methanol in the coagulant is 2.5: 100.

the foam breaker in the step (5) is a mixed solution of methanol and calcium nitrate, and the weight ratio of the calcium nitrate to the methanol in the foam breaker is 3: 50.

the specific preparation method of the latex solution in the step (4) comprises the following steps:

(1) adding sulfur, active oxidant, accelerator and anti-aging agent into natural latex, heating to 60 ℃ according to different emulsions, stirring for 2h, standing and storing for more than 24h, and filtering to obtain pre-vulcanized latex;

(2) taking pre-vulcanized latex as a base material, adding a flame retardant and an active agent, rapidly stirring by a dispersing device, continuously cutting bubbles to obtain fine bubbles with 15-25 wt% of the inner part uniformly dispersed, and then adding color paste and a thickening agent to ensure that the viscosity of the mixture is 1800mpa.s-2000 m.pas.

Example 4

The structure of the special dipping glove for welding is completely the same as that of the embodiment 1, wherein the dipping coating is prepared from the following raw materials in parts by weight: 125 parts of dipping latex, 32 parts of flame retardant, 2.2 parts of active oxidant, 2 parts of color paste and 3 parts of thickening agent, wherein the dipping coating contains 20 wt% of bubbles. The dipping latex is prepared from the following raw materials in parts by weight: 100 parts of neoprene latex, 1.5 parts of sulfur, 3 parts of zinc oxide, 1.5 parts of accelerator and 1 part of anti-aging agent.

The flame retardant consists of a TBC flame retardant and antimony trioxide, the mass ratio of the TBC flame retardant to the antimony trioxide is 2:1, and the active oxidant is sodium dodecyl benzene sulfonate.

The preparation method of the special dipping glove for welding comprises the following steps:

(1) preparing a glove liner: 100% of the glove liner is woven by the flame-retardant fibers, and the high-elasticity elastic threads are tightly wrapped on the inner layer of the glove liner by the flame-retardant fibers at the neck cuff;

(2) preheating: sleeving the glove liner with a mold, and then preheating the glove liner in an oven to enable the temperature of the outer surface of the glove liner to reach 50 ℃;

(3) impregnating a coagulant: dipping the preheated glove liner and the mould into the coagulant together, and keeping the mixture for 1 s;

(4) dipping latex solution: dipping the glove liner adsorbed with the coagulant into a prepared latex solution in advance, and then vibrating and dripping to filter off the redundant latex solution;

(5) dipping the glove liner dipped with the latex solution and the mould into a curing foam breaker, wherein the dipping retention time is 10 s;

(6) drying in a drying oven at 95 deg.C for 80 min;

(7) after drying, the gloves are taken off from the hand mold for water washing, and after the water washing is completed, the gloves are dried again;

(8) cutting off the excess part which is not dipped in the flame-retardant gummed glove which is finished by the steps (1) to (7), butting the rib top of the flame-retardant gummed glove with the rib top of a leather sleeve, and sewing the rib tops together, wherein the sleeve extends to the back of the hand until the fingertips of five fingers form a leather shield-shaped protection on the back of the hand, and fixing the finger head and the leather shield by using a finger sleeve with the width of 0.5cm-1cm on the inner surface of the leather shield.

The coagulant in the step (3) is a mixed solution of methanol and calcium nitrate, and the weight ratio of the calcium nitrate to the methanol in the coagulant is 1.5: 100.

the foam breaker in the step (5) is a mixed solution of methanol and calcium nitrate, and the weight ratio of the calcium nitrate to the methanol in the foam breaker is 2.5: 50.

the specific preparation method of the latex solution in the step (4) comprises the following steps:

(1) adding sulfur, active oxidant, promoter and anti-aging agent into neoprene latex, stirring at normal temperature or under heating for 2h according to different emulsions, standing and storing for more than 24h, and filtering to obtain pre-vulcanized latex;

(2) taking pre-vulcanized latex as a base material, adding a flame retardant and an active agent, rapidly stirring by a dispersing device, continuously cutting bubbles to obtain fine bubbles with 15-25 wt% of the inner part uniformly dispersed, and then adding color paste and a thickening agent to ensure that the viscosity of the mixture is 1800mpa.s-2000 m.pas.

The gloves obtained in examples 2 to 4 were subjected to the performance test, and the results are shown in the following table:

the above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and variations which do not require inventive efforts and are made by those skilled in the art are still within the scope of the present invention.

Claims (14)

1. The special impregnated glove for welding is characterized by comprising a hand protection part and an arm protection part, wherein the hand protection part is a flame-retardant impregnated glove, the arm protection part is a leather sleeve, and a rib top of the flame-retardant impregnated glove is butted and sewn with a rib top of the sleeve.

2. The dipping glove special for welding as claimed in claim 1, wherein the sleeve extends to the back of the hand until the fingertips of five fingers form a protection of the cortical shield on the back of the hand, and the finger tip and the cortical shield are fixed by a finger sleeve with a width of 0.5cm to 1cm on the inner surface of the cortical shield.

3. The dipped glove special for welding as claimed in claim 2, wherein the hand protection part comprises a glove liner, the glove liner is woven by flame-retardant fibers, the outer surface of the glove liner is provided with a dipping coating, the dipping coating comprises dipping latex, flame retardant, active oxidant and thickener, and the dipping coating contains air bubbles to make the inside of the dipping coating have a honeycomb structure.

4. The special dipping glove for welding according to claim 3, wherein the glove liner is woven by 100% of the flame-retardant fiber, and the high-elasticity elastic thread is tightly wrapped on the inner layer of the glove liner by the flame-retardant fiber at the neck cuff.

5. The dipped glove special for welding according to claim 3, wherein the dipped coating is prepared from the following raw materials in parts by weight: 100-150 parts of dipping latex, 15-52.5 parts of flame retardant, 1.5-3 parts of active oxidant, 1-3 parts of color paste and 2-4 parts of thickening agent, wherein the dipping coating contains 15-25 wt% of bubbles.

6. The dipping glove special for welding according to claim 5, wherein the dipping latex is prepared from the following raw materials in parts by weight: 100 parts of latex, 0.5-2.5 parts of sulfur, 1.5-4.5 parts of zinc oxide, 0.5-2.5 parts of accelerator and 0.5-2 parts of anti-aging agent.

7. The dipping glove special for welding according to claim 6, wherein the latex is any one of carboxylated nitrile latex, natural latex, PVC, PU and neoprene latex.

8. The dipped glove special for welding as claimed in claim 3, wherein the flame retardant consists of TBC flame retardant and antimony trioxide, the mass ratio of the TBC flame retardant to the antimony trioxide is 2:1, and the active oxidant is sodium dodecyl benzene sulfonate.

9. The method for preparing the dipped gloves special for welding as claimed in any one of the claims 1 to 8, which is characterized by comprising the following steps:

(1) preparing a glove liner: 100% of the glove liner is woven by the flame-retardant fibers, and the high-elasticity elastic threads are tightly wrapped on the inner layer of the glove liner by the flame-retardant fibers at the neck cuff;

(2) preheating: sleeving the glove liner with a mold, and then preheating the glove liner in an oven to enable the temperature of the outer surface of the glove liner to reach 45-55 ℃;

(3) impregnating a coagulant: dipping the preheated glove liner and the mould into the coagulant together, and keeping the time for 0.5 to 2 seconds;

(4) dipping latex solution: dipping the glove liner adsorbed with the coagulant into a prepared latex solution in advance, and then vibrating and dripping to filter off the redundant latex solution;

(5) dipping the glove liner dipped with the latex solution and the mould into a curing foam breaker, wherein the dipping retention time is 8-15 s;

(6) drying in a drying oven at 80-120 deg.C for 60-90 min;

(7) after drying, the gloves are taken off from the hand mold for water washing, and after the water washing is completed, the gloves are dried again;

(8) cutting off the excess part which is not dipped in the flame-retardant gummed glove which is finished by the steps (1) to (7), butting the rib top of the flame-retardant gummed glove with the rib top of a leather sleeve, and sewing the rib tops together, wherein the sleeve extends to the back of the hand until the fingertips of five fingers form a leather shield-shaped protection on the back of the hand, and fixing the finger head and the leather shield by using a finger sleeve with the width of 0.5cm-1cm on the inner surface of the leather shield.

10. The method for preparing the dipped gloves special for welding as claimed in claim 9, wherein the coagulant in step (3) is any one or more of methanol, ethanol, glacial acetic acid, calcium nitrate and calcium chloride.

11. The method for preparing dipped gloves special for welding as claimed in claim 10, wherein the coagulant in step (3) is a mixed solution of methanol and calcium nitrate, and the weight ratio of calcium nitrate to methanol in the coagulant is 1-2.5: 100.

12. the method for preparing dipped gloves special for welding as claimed in claim 9, wherein the curing and foam breaking agent in step (5) is any one or more of methanol, ethanol, glacial acetic acid, calcium nitrate and calcium chloride.

13. The method for preparing dipped gloves special for welding as claimed in claim 12, wherein the foam breaker in step (5) is a mixed solution of methanol and calcium nitrate, and the weight ratio of calcium nitrate to methanol in the foam breaker is 2-3: 50.

14. the method for preparing dipped gloves specially used for welding as claimed in claim 9, wherein the specific preparation method of the latex solution of step (4) comprises the following steps:

(1) adding sulfur, an active oxidant, an accelerator and an anti-aging agent into latex, stirring at normal temperature or under heating for 2 hours according to different emulsions, standing and storing for more than 24 hours, and filtering to obtain pre-vulcanized latex, wherein the latex is any one of carboxylated butyronitrile latex, natural latex, styrene-butadiene latex and chloroprene latex;

(2) taking pre-vulcanized latex as a base material, adding a flame retardant and an active agent, rapidly stirring by a dispersing device, continuously cutting bubbles to obtain fine bubbles with 15-25 wt% of the inner part uniformly dispersed, and then adding color paste and a thickening agent to ensure that the viscosity of the mixture is 1800mpa.s-2000 m.pas.