Disposable antiperspirant nitrile glove and method of making same

Abstract

The present application relates to the technical field of disposable gloves, in particular to a disposable antiperspirant butyronitrile glove and a preparation method thereof; wherein the disposable antiperspirant butyronitrile glove comprises a glove body and an antiperspirant layer attached to the glove body, and the antiperspirant layer comprises the following raw materials in parts by weight: carboxyl butyronitrile latex 85-95 parts, chlorinated aluminum hydroxide 3-8 parts, modified nanocellulose 2-4 parts, glycerol 1-2 parts, 0.5-1 part polyethylene glycol 6000, zinc oxide nanoparticles 2-3 parts, and mint extract 0.1-0.3 parts; and the present application also discloses a preparation method of the disposable antiperspirant butyronitrile glove. Through the synergistic effect of the composite emulsion system containing ACH-PEG nano slow-release particles and the butyronitrile latex preparation process, the balance optimization of the antiperspirant function and the mechanical properties of the glove is achieved. Compared with the traditional rubber gloves, the sweat inhibition capacity is greatly improved on the basis of maintaining the tensile strength.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of disposable gloves, in particular to a disposable antiperspirant nitrile glove and a preparation method thereof. BACKGROUND

[0002] The nitrile glove is made of high-quality nitrile rubber and other additives, and is refined and processed; it does not contain protein, has no allergic reaction to human skin, is non-toxic, harmless, solid and durable, has good adhesion, and has excellent chemical protection, puncture resistance and biological compatibility, and has been widely used in medical, chemical and precision manufacturing fields.

[0003] However, the conventional nitrile glove has poor air permeability, and long-term wearing can easily cause accumulation of sweat on the hands. There have been attempts to improve this problem in the prior art, but most of them focus on surface coating modification, and it is still difficult to achieve long-term antiperspirant effect. SUMMARY

[0004] In order to solve the defects in the prior art, the present application provides a disposable antiperspirant nitrile glove and a preparation method thereof, which is realized by the following technical scheme:

[0005] The disposable antiperspirant nitrile glove comprises a glove body and an antiperspirant layer attached to the glove body, and the antiperspirant layer comprises the following raw materials by weight: 85-95 parts of carboxyl nitrile latex, 3-8 parts of chlorinated aluminum hydroxide, 2-4 parts of modified nanocellulose, 1-2 parts of glycerol, 0.5-1 part of polyethylene glycol 6000, 2-3 parts of zinc oxide nanoparticles, and 0.1-0.3 parts of mint extract; the modified nanocellulose is prepared by modifying nanocellulose with furfuryl amine.

[0006] The raw materials of the glove body are calculated based on the latex dry basis content, and specifically include: 84.75-84.85% of nitrile latex with a solid content of 40%, 2.50-3.50% of sulfur, 2.50-3.50% of zinc oxide, 0.75-0.85% of accelerator ZDBC, 0.35-0.45% of accelerator ZDEC, 0.45-0.55% of anti-aging agent, 2.50-3.50% of titanium dioxide, 1.50-2.50% of blue pigment, 1.40-1.60% of dispersant one sodium salt of polyacrylic acid, and 0.90-1.10% of dispersant two alkyl phenol polyoxyethylene ether.

[0007] The preparation method of the disposable antiperspirant nitrile glove comprises the following steps:

[0008] S100 preparing an antiperspirant lotion, preparing the antiperspirant lotion according to the raw material formula of the antiperspirant layer;

[0009] S200 preparing a glove body;

[0010] S300 surface pretreatment, using sodium hypochlorite for surface pretreatment on the prepared glove body;

[0011] S400 antiperspirant dip, the glove body after surface pretreatment is dipped in antiperspirant, and gradient drying is formed antiperspirant layer;

[0012] S500 demoulding, blowing demoulding is carried out by using a pneumatic demoulding machine.

[0013] The S100 antiperspirant preparation specifically comprises:

[0014] S110 each raw material is weighed according to the formula for standby;

[0015] S120 the aluminum chlorohydrate and polyethylene glycol 6000 are premixed at 40 DEG C and 800 rpm for 2h, and are treated by high-pressure homogenizer at 150 MPa pressure for 5 times, to form ACH-PEG nano slow-release particles;

[0016] S130 first, the carboxyl nitrile latex is added into a reaction kettle, stirring is kept, the modified nano cellulose is added in three times, each time interval is ten minutes, after the completion of feeding, stirring is kept until complete dispersion, a mixed solution is obtained; the zinc oxide nanoparticles are dispersed into glycerol, and the ACH-PEG nano slow-release particles, the mint extract are sequentially added into the mixed solution, and stirring is kept for 6h to obtain the antiperspirant.

[0017] The S200 glove body preparation specifically comprises: first, solid powders including zinc oxide, titanium white powder and pigment are mixed with dispersant I and water, to prepare a first dispersion by grinding, then sulfur is mixed with dispersant II and water, to prepare a second dispersion by grinding; then the first dispersion, antioxidant, accelerator solution and the second dispersion are sequentially added into the nitrile latex; then the pH is adjusted to 9.5-10.5, and stirring is kept for 2-4h until uniform, and aging is kept for 12h at 25 DEG C; then hand mold dipping, leaching and pre-vulcanization, edge rolling and vulcanization are sequentially carried out to obtain the glove body.

[0018] The mass concentration of the accelerator solution is 10%.

[0019] The S400 antiperspirant dip specifically comprises:

[0020] S410 the glove body after surface pretreatment is hot air dried to remove surface moisture;

[0021] S420 the glove body is vertically dipped into the antiperspirant, and the dipping time is 6-9s, and the lifting speed is 10cm / min;

[0022] S430 after the completion of dipping, the glove body is sent into a tunnel type oven for drying, the first stage drying temperature is 58-62 DEG C, and the drying time is 5min; the second stage drying temperature is 78-82 DEG C, and the drying time is 10min; the third stage drying temperature is 38-42 DEG C, and the drying time is 5min.

[0023] The S300 surface pretreatment specifically includes: soaking in a chlorine washing tank with 100 ppm of sodium hypochlorite for 1 min, and then adjusting to neutral with a NaHSO3 solution; and then rinsing with clean water for 2 min.

[0024] The crimping and vulcanization specifically includes: crimping 2-3 mm at the opening of the latex glove by using a crimping machine; and then performing segmented vulcanization, one segment vulcanization: 110-120 DEG C, vulcanization time 15-20 min; two segment vulcanization: 100 DEG C, vulcanization time 30 min; and finally forced water cooling to below 40 DEG C.

[0025] The hand mold dipping includes latex dipping, the latex temperature is 25-30 DEG C, the dipping time is 5-8 s, and the hand mold pulling speed is 10 cm / min.

[0026] The technical scheme of the present application has the following advantages:

[0027] The present application realizes the balance optimization of the antiperspirant function and the mechanical properties of the glove through the synergistic effect of the composite emulsion system containing nano slow-release particles and the preparation process of the nitrile latex.

[0028] The nano cellulose modification treatment is innovatively combined with the ACH-PEG slow-release particles, and the technical bottleneck of poor dispersion stability of inorganic antiperspirants in the rubber matrix is solved.

[0029] The combination of the three-stage gradient drying process and the vertical dipping technology can greatly improve the coating integrity of the antiperspirant active ingredients on the surface of the glove. DETAILED DESCRIPTION

[0030] The technical scheme of the present application will be described clearly and completely below. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0031] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as there is no conflict.

[0032] The present application provides a disposable antiperspirant nitrile glove, which is prepared by the following method.

[0033] S100 prepares an antiperspirant lotion.

[0034] The raw materials of the antiperspirant lotion include, by weight: carboxyl nitrile latex 85-95 parts, aluminum chlorohydrate (ACH) 3-8 parts, modified nanocellulose 2-4 parts, glycerol 1-2 parts, 0.5-1 part polyethylene glycol 6000, zinc oxide nanoparticles 2-3 parts, and mint extract 0.1-0.3 parts.

[0035] The carboxyl nitrile latex is a basic film-forming material that provides elasticity and mechanical support; the solid content is 40%, and the pH is 8.1-8.3 to maintain colloidal stability.

[0036] The aluminum chlorohydrate is the core antiperspirant ingredient that physically inhibits sweat secretion by plugging the sweat gland ducts and needs to be combined with a slow-release carrier to extend the action time.

[0037] The modified nanocellulose enhances the moisture absorption and diffusion efficiency by introducing -NH2 groups through furfurylamine modification in cooperation with ACH, and improves the tear resistance of the film layer. The -NH2 groups introduced by furfurylamine modification form an ionic bonding network with the carboxyl nitrile latex, which can effectively improve the elongation at break. At the same time, the mesoporous structure of nanocellulose can absorb sweat.

[0038] Glycerol acts as a humectant to prevent skin dryness.

[0039] Polyethylene glycol 6000 acts as a slow-release carrier to coat ACH into particles ≤200 nm in size to control the release rate of the active ingredient.

[0040] Zinc oxide nanoparticles are broad-spectrum antibacterial agents that inhibit the reproduction of sweat bacteria; the particle size is <100 nm.

[0041] Mint extract acts as a coolant to assist in shrinking pores; the addition amount needs to be controlled to avoid latex demulsification.

[0042] S110: Weigh the raw materials according to the formula and prepare them for use.

[0043] S120: Prepare ACH-PEG nano slow-release particles. Mix aluminum chlorohydrate and polyethylene glycol 6000 at 40°C and 800 rpm for 2 hours, then cycle through a high-pressure homogenizer at 150 MPa pressure for 5 times to form nano slow-release particles. The nano slow-release particles can improve the action time. The nano-coated structure also reduces the irritation caused by direct contact of ACH with the skin.

[0044] S130: Prepare the antiperspirant lotion.

[0045] S131: Add the carboxyl nitrile latex to the reaction kettle and stir at a low speed of 50 rpm. Divide the modified nanocellulose into three equal parts and add it in three portions with an interval of ten minutes between each addition. After the modified nanocellulose is completely dispersed after stirring for 1 hour, a mixture is obtained. The -NH2 groups of the cellulose electrostatically adsorb the carboxyl groups of the latex, enhancing the interfacial bonding.

[0046] S132 Zinc oxide nanoparticles are dispersed in glycerol, and then ACH-PEG nano-sustained-release particles and mint extract are sequentially added into the mixture, and stirring is maintained at 50 rpm for 6 h to obtain the composite emulsion, i.e. the antiperspirant lotion.

[0047] The whole process of preparing the composite emulsion is kept at 23-27°C to prevent latex gelation.

[0048] S200 The glove body is prepared.

[0049] The raw materials of the nitrile latex glove are calculated based on the latex dry base content (DBC), and specifically include the following raw materials in the following weight percentages: nitrile latex with a solid content of 40% 84.75%-84.85%, sulfur 2.50%-3.50%, zinc oxide 2.50%-3.50%, accelerator ZDBC 0.75%-0.85%, accelerator ZDEC 0.35%-0.45%, antioxidant BHT 0.45%-0.55%, titanium dioxide 2.50%-3.50%, blue pigment 1.50%-2.50%, dispersant one sodium polyacrylate 1.40%-1.60%, and dispersant two alkylphenol polyoxyethylene ether 0.90%-1.10%.

[0050] S210 Each raw material is weighed according to the formula for standby use.

[0051] S220 Pretreatment, latex ripening and dispersion preparation.

[0052] S221 Latex ripening: the nitrile latex is ripened at 25-30°C under low-speed stirring at a speed of <50 rpm for 24 h to eliminate mechanical stress during transportation.

[0053] S222 Dispersion preparation: zinc oxide, titanium dioxide, pigment and other solid powders are mixed with dispersant one and water to prepare a first dispersion with a solid content of 50% through a ball mill or sand mill; sulfur is mixed with dispersant two and water to prepare a second dispersion with a solid content of 50% through a ball mill or sand mill. Accelerators ZDBC and ZDEC are directly dissolved in water to form a 10% aqueous solution.

[0054] S230 Latex compounding and ripening.

[0055] S231 The nitrile latex is placed in a stainless steel batching tank, and the first dispersion, antioxidant, accelerator solution and second dispersion are sequentially added into the nitrile latex.

[0056] S232 The pH is adjusted to 9.5-10.5, and stirring is performed for 2-4 h until uniform, and ripening is performed at 25°C for 12 h; and the latex viscosity is controlled at 2000-3000 mPa·s.

[0057] S240 Hand mold dipping.

[0058] S241 Pretreatment of hand mold, first clean the hand mold with 60℃, 5% NaOH solution, then clean with pure water until neutral, and finally dry at 80℃ for 10min.

[0059] S242 Immersion of coagulant, immerse for 3-5s in a methanol solution containing 10-15% calcium nitrate and 5% methanol, and then dry at 70℃ for 2min.

[0060] S243 Latex immersion; first immersion: latex temperature 25-30℃, immersion time 5-8s, hand mold lifting speed 10cm / min, and the thickness of the formed rubber film on the hand mold is 0.08-0.12mm. When the fingertips and other parts of the glove need to be thickened, secondary immersion can be performed on the parts that need to be thickened after the first immersion, and the immersion time is 2-3s, and the other operations are the same as the first immersion.

[0061] S250 Leaching and pre-vulcanization.

[0062] S251 Leaching, immerse the immersed hand mold in a 60℃ hot water tank for 5-10min to remove water-soluble substances.

[0063] S252 Pre-vulcanization: hot air drying at 80℃ for 5min for preliminary crosslinking.

[0064] S260 Hemming and vulcanization.

[0065] S261 Hemming, use a hemming machine to roll up 2-3mm at the opening of the latex glove.

[0066] S262 Vulcanization, use a tunnel type vulcanization oven for segmented vulcanization; first stage vulcanization: 110-120℃, vulcanization time 15-20min, mainly to achieve main crosslinking of sulfur; second stage vulcanization: 100℃, vulcanization time 30min, to make the accelerator fully react and eliminate internal stress; cooling, forced water cooling to below 40℃.

[0067] S300 Surface pretreatment, immerse in a chlorine washing tank with 100ppm sodium hypochlorite for 1min, and then adjust to neutral with NaHSO3 solution; then rinse with clean water for 2min.

[0068] S400 Antiperspirant immersion.

[0069] Place the prepared antiperspirant in the immersion tank, immerse the surface pretreated glove body in the immersion tank, and then dry in a tunnel type oven after immersion is completed.

[0070] S410 The surface pretreated glove body is dried with 40℃ hot air for 5min to remove surface moisture.

[0071] S420 The glove body is vertically immersed into the antiperspirant lotion, and the immersion time is 6-9s, and the pulling speed is 10cm / min.

[0072] S430 After the immersion is completed, the glove body is sent into a tunnel type oven for drying, the first stage drying temperature is 58-62 DEG C, the drying time is 5min, low temperature setting is realized, and bubble generation is prevented; the second stage drying temperature is 78-82 DEG C, the drying time is 10min, latex film forming is realized; the third stage drying temperature is 38-42 DEG C, the drying time is 5min, moisture balance is realized, and mint volatilization is avoided.

[0073] S500 Demoulding, a pneumatic demoulding machine is used, 0.3-0.5MPa compressed air is used to blow off the glove, and a counting machine is used to count the gloves.

[0074] The modified nanocellulose in the application can be prepared by the following method.

[0075] The nanocellulose and a 40% mass concentration sodium hydroxide solution are mixed according to a weight ratio of 1:10, stirring is carried out at room temperature for 3-5 hours, the cellulose hydroxyl group is deprotonated to form active sites, and after filtration, the free alkali is removed by washing with deionized water.

[0076] The nanocellulose and the solvent are mixed according to a mass ratio of 1:25; then the epoxy chloropropane is added according to a cellulose to epoxy chloropropane molar ratio of about 1:1-1:2, stirring is continuously carried out at 35-40 DEG C for 2-4 hours, centrifugation is carried out, and deionized water is repeatedly washed for 3-5 times, so that the epoxy group is grafted to the surface of the cellulose to generate an epoxy intermediate modified cellulose.

[0077] The epoxy intermediate modified cellulose and the solvent are mixed according to a mass ratio of 1:25, furfurylamine is added according to a mass ratio of 1:8.3 of furfurylamine to the epoxy intermediate cellulose, a pH 9.0-10.5 boric acid-sodium borate buffer solution is added according to a mass ratio of 20:1 of the epoxy intermediate cellulose to the buffer solution for catalyzing the reaction, and stirring is continuously carried out at 30-40 DEG C until the reaction is completed.

[0078] The reaction mixture is centrifuged at 8000rpm for 10 minutes, and the supernatant is discarded; the precipitate is washed with ethanol and deionized water alternately for 3-5 times, and the unreacted furfurylamine, solvent (DMF) and byproduct are removed. The modified nanocellulose is obtained after drying.

[0079] Of course, the modified nanocellulose can also be directly purchased from a supplier.

[0080] The above technical solutions are described below through specific examples.

[0081] Example 1

[0082] The disposable antiperspirant nitrile glove is prepared by the following steps:

[0083] S100 Preparation of antiperspirant lotion.

[0084] The raw materials of the antiperspirant lotion include, by weight parts: carboxyl nitrile latex 85 parts, aluminum chlorohydrate (ACH) 3 parts, modified nanocellulose 3 parts, glycerol 1 part, 0.8 parts of polyethylene glycol 6000, zinc oxide nanoparticles 2.5 parts, mint extract 0.1 part.

[0085] S110 Each raw material is weighed according to the formula for standby.

[0086] S120 Preparation of ACH-PEG nano slow-release particles, mixing aluminum chlorohydrate and polyethylene glycol 6000 at 40℃, 800rpm for 2h, and then treated by high-pressure homogenizer at 150MPa pressure for 5 times to form nano slow-release particles.

[0087] S130 Preparation of antiperspirant lotion.

[0088] S131 Carboxyl nitrile latex is added to the reaction kettle, and the modified nanocellulose is evenly divided into three parts, which is added in three times with an interval of ten minutes. After the addition of the modified nanocellulose is completed, stirring for 1h to completely disperse, and the mixed solution is obtained. The -NH2 of cellulose and the carboxyl group of latex occur electrostatic adsorption, which enhances the interfacial bonding.

[0089] S132 Zinc oxide nanoparticles are dispersed in glycerol, and then ACH-PEG nano slow-release particles and mint extract are added into the mixed solution in turn, and stirring is maintained at 50rpm for 6h to obtain a composite emulsion, which is an antiperspirant lotion.

[0090] The whole process of preparing the composite emulsion is at 25℃ to prevent latex gelation.

[0091] S200 Preparation of glove body.

[0092] The raw materials of the nitrile latex glove are calculated based on the latex dry basis content (DBC) and include the following raw materials by weight percentage: nitrile latex with solid content of 40% 84.85%, sulfur 2.50%, zinc oxide 3.50%, accelerator ZDBC 0.75%, accelerator ZDEC 0.45%, antioxidant 0.45%, titanium dioxide 3.50%, blue pigment 1.50%, dispersant one polyacrylic acid sodium salt 1.60%, and dispersant two alkyl phenol polyoxyethylene ether 0.90%.

[0093] S210 Each raw material is weighed according to the formula for standby.

[0094] S220 Pretreatment, latex ripening and dispersion preparation.

[0095] S221 Latex ripening: nitrile latex is ripened at 28℃ under low-speed stirring at a speed <50rpm for 24h to eliminate mechanical stress during transportation.

[0096] S222 dispersion preparation: zinc oxide, titanium white, pigment, etc. solid powder is mixed with dispersant I and water to prepare a first dispersion with a solid content of 50% by ball mill or sand mill; sulfur is mixed with dispersant II and water to prepare a second dispersion with a solid content of 50% by ball mill or sand mill. Promoter ZDBC, ZDEC is directly dissolved in water to form a 10% aqueous solution.

[0097] S230 latex preparation and aging.

[0098] S231 nitrile latex is placed in a stainless steel batching tank, and the first dispersion, antioxidant, promoter solution, and second dispersion are added to the nitrile latex in sequence.

[0099] S232 adjust pH to 9.5, stir for 3h to uniform, 25℃ aging for 12h; and control the viscosity of the latex at 2500mPa·s.

[0100] S240 hand mold dipping.

[0101] S241 hand mold pretreatment, first clean the hand mold with 60℃, mass concentration of 5% sodium hydroxide solution, then wash with pure water to neutral, and finally dry at 80℃ for 10min.

[0102] S242 coagulant dipping, using a methanol solution containing 12% calcium nitrate and 5% methanol, dipping time is 5s, after dipping, drying at 70℃ for 2min.

[0103] S243 latex dipping; first dipping: latex temperature is 28℃, dipping time is 7s, hand mold lifting speed is 10cm / min, and the thickness of the formed rubber film on the hand mold is 0.1mm. When the fingertips and other parts of the glove need to be thickened, secondary dipping can be performed on the parts that need to be thickened after the first dipping is completed, the dipping time is 2s, and the other operations are the same as the first dipping.

[0104] S250 leaching and pre-vulcanization.

[0105] S251 leaching, the dipped hand mold is soaked in a 60℃ hot water tank for 8min to remove water-soluble substances.

[0106] S252 pre-vulcanization: hot air drying at 80℃ for 5min, preliminary crosslinking.

[0107] S260 curling and vulcanization.

[0108] S261 curling, using a curling machine to curl 2mm at the opening of the latex glove.

[0109] S262 vulcanization, using a tunnel type vulcanization oven, segmented vulcanization; first stage vulcanization: 115°C, vulcanization time 18 min, mainly to achieve the main crosslinking of sulfur; second stage vulcanization: 100°C, vulcanization time 30 min, to make the accelerator fully react, eliminate internal stress; cooling; forced water cooling to below 40°C.

[0110] S300 surface pretreatment, in a chlorine washing tank, soaked with 100 ppm sodium hypochlorite for 1 min, then adjusted to neutral with NaHSO3 solution; then washed with clean water for 2 min.

[0111] S400 antiperspirant dip.

[0112] The prepared antiperspirant is placed in the dipping tank, and the glove body after surface pretreatment is placed in the dipping tank for dipping. After dipping, it is placed in a tunnel type oven for drying.

[0113] S410 the glove body after surface pretreatment is dried with 40°C hot air for 5 min to remove surface moisture.

[0114] S420 the glove body is vertically immersed in the antiperspirant, the dipping time is 6 s, and the lifting speed is 10 cm / min.

[0115] S430 after dipping, it is sent into a tunnel type oven for drying, the first stage drying temperature is 60°C, drying for 5 min to achieve low temperature setting to prevent bubble generation; the second stage drying temperature is 80°C, drying for 10 min to achieve latex film formation; the third stage drying temperature is 40°C, drying for 5 min to balance moisture and avoid menthol evaporation.

[0116] S500 demolding, using a pneumatic demolding machine, blowing off the gloves with 0.3 MPa compressed air, and the gloves are picked up by a counting machine.

[0117] Example 2

[0118] Disposable antiperspirant nitrile gloves are prepared by the following steps:

[0119] S100 preparation of antiperspirant.

[0120] The raw materials of the antiperspirant include, by weight: 95 parts of carboxyl nitrile latex, 8 parts of aluminum chlorohydrate (ACH), 2 parts of modified nanocellulose, 2 parts of glycerol, 0.5 parts of polyethylene glycol 6000, 3 parts of zinc oxide nanoparticles, and 0.3 parts of menthol extract.

[0121] S110 each raw material is weighed according to the formula for standby.

[0122] S120 Preparation of ACH-PEG nano-sustained-release particles: hydroxyaluminum chloride and polyethylene glycol 6000 are premixed at 40℃ and 800rpm for 2h, and then treated by high-pressure homogenizer at 150MPa for 5 cycles to form nano-sustained-release particles.

[0123] S130 Preparation of antiperspirant.

[0124] S131 Carboxyl nitrile latex is added into a reaction kettle, and the modified nano-cellulose is evenly divided into three portions and added in three times with an interval of ten minutes each time. After the addition of the modified nano-cellulose is completed, the stirring is continued for 1h until complete dispersion, to obtain a mixed solution. Electrostatic adsorption occurs between the -NH2 of cellulose and the carboxyl groups of the latex, thereby enhancing the interfacial bonding.

[0125] S132 Zinc oxide nanoparticles are dispersed in glycerol, and then added into the mixed solution in sequence with ACH-PEG nano-sustained-release particles and mint extract, and the stirring is maintained at 50rpm for 6h to obtain a composite emulsion.

[0126] The whole process of preparing the composite emulsion is carried out at 27℃ to prevent gelation of the latex.

[0127] S200 Preparation of glove body.

[0128] The raw materials of the nitrile latex glove are calculated based on the latex dry basis content (DBC) and include the following raw materials in weight percentage: nitrile latex with solid content of 40% 84.75%, sulfur 3.50%, zinc oxide 2.50%, accelerator ZDBC 0.85%, accelerator ZDEC 0.35%, antioxidant 0.55%, titanium dioxide 2.50%, blue pigment 2.50%, dispersant one sodium salt of polyacrylic acid 1.40%, and dispersant two alkylphenol polyoxyethylene ether 1.10%.

[0129] S210 Each raw material is weighed according to the formula for standby use.

[0130] S220 Pretreatment, latex ripening and dispersion preparation.

[0131] S221 Latex ripening: the nitrile latex is ripened at 25℃ under low-speed stirring at a rotation speed of <50rpm for 24h to eliminate mechanical stress during transportation.

[0132] S222 Dispersion preparation: zinc oxide, titanium dioxide, pigment and other solid powders are mixed with dispersant one and water to prepare a first dispersion with a solid content of 50% by a ball mill or sand mill; sulfur is mixed with dispersant two and water to prepare a second dispersion with a solid content of 50% by a ball mill or sand mill. Accelerators ZDBC and ZDEC are directly dissolved in water to form an aqueous solution with a concentration of 10%.

[0133] S230 Latex compounding and ripening.

[0134] S231 The nitrile latex is placed in a stainless steel batching tank, and the first dispersion, antioxidant, accelerator solution, and second dispersion are sequentially added to the nitrile latex.

[0135] S232 The pH is adjusted to 10.5, and stirring is performed for 2 h to homogenize, and aging is performed at 25℃ for 12 h; and the latex viscosity is controlled at 2000 mPa·s.

[0136] S240 Hand mold dipping.

[0137] S241 Hand mold pretreatment, first, the hand mold is cleaned with a 60℃ sodium hydroxide solution with a mass concentration of 5%, then washed with pure water until neutral, and finally dried at 80℃ for 10 min.

[0138] S242 Coagulant dipping, a methanol solution containing 10% calcium nitrate and 5% methanol is used for dipping for 3 s, and after dipping is completed, drying is performed at 70℃ for 2 min.

[0139] S243 Latex dipping; primary dipping: latex temperature 25℃, dipping time 5 s, hand mold lifting speed 10 cm / min, and the formed rubber film on the hand mold is 0.08 mm thick. When the fingertips and other parts of the glove need to be thickened, secondary dipping can be performed on the parts that need to be thickened after primary dipping is completed, the dipping time is 3 s, and the other operations are the same as primary dipping.

[0140] S250 Leaching and presulfurization.

[0141] S251 Leaching, the dipped hand mold is soaked in a 60℃ hot water tank for 5 min to remove water-soluble substances.

[0142] S252 Presulfurization: hot air drying at 80℃ for 5 min for preliminary crosslinking.

[0143] S260 Flanging and vulcanization.

[0144] S261 Flanging, a flanging machine is used to roll up 2 mm at the opening of the latex glove.

[0145] S262 Vulcanization, a tunnel type vulcanization oven is used for segmented vulcanization; first stage vulcanization: 120℃, vulcanization time 15 min, mainly to achieve main crosslinking of sulfur; second stage vulcanization: 100℃, vulcanization time 30 min, to make the accelerator fully react and eliminate internal stress; cooling; forced water cooling to below 40℃.

[0146] S300 Surface pretreatment, in a chlorine washing tank, 100ppm sodium hypochlorite is soaked for 1 min, then adjusted to neutral with NaHSO3 solution; then washed with water for 2 min.

[0147] S400 Antiperspirant dipping.

[0148] The prepared antiperspirant solution is placed in the dipping tank, and the glove body subjected to surface pretreatment is placed in the dipping tank for dipping. After the dipping is completed, the glove body is placed in a tunnel oven for drying.

[0149] S410 The glove body subjected to surface pretreatment is dried with hot air at 40℃ for 5 min to remove surface moisture.

[0150] S420 The glove body is vertically dipped into the antiperspirant solution, the dipping time is 8 s, and the lifting speed is 10 cm / min.

[0151] S430 After the dipping is completed, the glove body is sent into a tunnel oven for drying. The first-stage drying temperature is 58℃, the drying time is 5 min, low-temperature setting is achieved, and bubble generation is prevented. The second-stage drying temperature is 82℃, the drying time is 10 min, latex film formation is achieved. The third-stage drying temperature is 42℃, the drying time is 5 min, moisture balance is achieved, and menthol volatilization is avoided.

[0152] S500 Demolding is performed by using a pneumatic demolding machine, and the glove is blown off by using 0.4 MPa compressed air. The glove is picked up by a counting machine.

[0153] Example 3

[0154] The disposable antiperspirant nitrile glove is prepared by the following steps:

[0155] S100 The antiperspirant solution is prepared.

[0156] The raw materials of the antiperspirant solution include, by weight fraction: 90 parts of carboxyl nitrile latex, 5 parts of aluminum chlorohydroxide (ACH), 4 parts of modified nanocellulose, 1.5 parts of glycerol, 1 part of polyethylene glycol 6000, 2 parts of zinc oxide nanoparticles, and 0.2 parts of menthol extract.

[0157] S110 The raw materials are weighed according to the formula for standby use.

[0158] S120 The ACH-PEG nano-sustained-release particles are prepared. The aluminum chlorohydroxide and the polyethylene glycol 6000 are premixed at 40℃ and 800 rpm for 2 h, and are subjected to cyclic treatment under the pressure of 150 MPa by using a high-pressure homogenizer for 5 times to form the nano-sustained-release particles.

[0159] S130 The antiperspirant solution is prepared.

[0160] S131 The carboxyl nitrile latex is added into a reaction kettle, and is stirred at a low speed of 50 rpm. The modified nanocellulose is divided into three portions, and is added in three times with an interval of ten minutes. After the addition of the modified nanocellulose is completed, the stirring is continued for 1 h until the complete dispersion of the modified nanocellulose is achieved. The mixed solution is obtained. The -NH2 of the cellulose is subjected to electrostatic adsorption with the carboxyl group of the latex, and the interface bonding is enhanced.

[0161] S132 Zinc oxide nanoparticles are dispersed in glycerol, and then ACH-PEG nano-sustained-release particles and mint extract are sequentially added into the mixture, and stirring is maintained at 50 rpm for 6 h to obtain a composite emulsion.

[0162] The whole process of preparing the composite emulsion is at 23℃ to prevent latex gelation.

[0163] S200 glove body preparation.

[0164] The raw materials of the nitrile latex glove are calculated based on the latex dry base content (DBC) and include, by weight percentage, the following raw materials: nitrile latex (solid content 40%) 84.80%, sulfur 3.00%, zinc oxide 3.00%, accelerator ZDBC 0.80%, accelerator ZDEC 0.40%, antioxidant 0.50%, titanium dioxide 3.00%, blue pigment 2.00%, dispersant one sodium polyacrylate 1.50%, and dispersant two alkylphenol polyoxyethylene ether 1.00%.

[0165] S210 weighing of each raw material according to the formula.

[0166] S220 pretreatment, latex ripening and dispersion preparation.

[0167] S221 latex ripening: the nitrile latex is ripened at 30℃ under low-speed stirring at a speed <50 rpm for 24 h to eliminate mechanical stress during transportation.

[0168] S222 dispersion preparation: zinc oxide, titanium dioxide, pigment and other solid powders are mixed with dispersant one and water to prepare a first dispersion with a solid content of 50% through a ball mill or sand mill; sulfur is mixed with dispersant two and water to prepare a second dispersion with a solid content of 50% through a ball mill or sand mill. Accelerators ZDBC and ZDEC are directly dissolved in water to form a 10% aqueous solution.

[0169] S230 latex compounding and ripening.

[0170] S231 the nitrile latex is placed in a stainless steel compounding tank, and the first dispersion, antioxidant, accelerator solution and second dispersion are sequentially added into the nitrile latex.

[0171] S232 the pH is adjusted to 10, and stirring is performed for 4 h until uniform, and ripening is performed at 25℃ for 12 h; and the latex viscosity is controlled at 3000 mPa·s.

[0172] S240 hand mold dipping.

[0173] S241 hand mold pretreatment: first, the hand mold is cleaned with a 60℃ sodium hydroxide solution with a mass concentration of 5%, then washed with pure water until neutral, and finally dried at 80℃ for 10 min.

[0174] S242 coagulant dipping, using a methanol solution containing 15% calcium nitrate and 5% methanol, dipping time 4s, after dipping, drying at 70°C for 2min.

[0175] S243 latex dipping; first dipping: latex temperature 30°C, dipping time 8s, hand mold pulling speed 10cm / min, the thickness of the film formed on the hand mold is 0.12mm. When the fingertips and other parts of the glove need to be thickened, secondary dipping can be performed on the parts that need to be thickened after the first dipping is completed, the dipping time is 3s, and the other operations are the same as the first dipping.

[0176] S250 leaching and pre-vulcanization.

[0177] S251 leaching, the dipped hand mold is soaked in a 60°C hot water tank for 10min to remove water-soluble substances.

[0178] S252 pre-vulcanization: hot air drying at 80°C for 5min, preliminary crosslinking.

[0179] S260 hemming and vulcanization.

[0180] S261 hemming, using a hemming machine to roll up 3mm at the opening of the latex glove.

[0181] S262 vulcanization, using a tunnel type vulcanization oven for segmented vulcanization; first stage vulcanization: 110°C, vulcanization time 20min, mainly to realize the main crosslinking of sulfur; second stage vulcanization: 100°C, vulcanization time 30min, to make the accelerator fully react and eliminate internal stress; cooling; forced water cooling to below 40°C.

[0182] S300 surface pretreatment, soaking in a chlorine washing tank with 100ppm sodium hypochlorite for 1min, then adjusting to neutral with NaHSO3 solution; then rinsing with clean water for 2min.

[0183] S400 antiperspirant dipping.

[0184] The prepared antiperspirant is placed in the dipping tank, and the surface pretreated glove body is placed in the dipping tank for dipping. After dipping, it is placed in a tunnel type oven for drying.

[0185] S410 the surface pretreated glove body is dried with 40°C hot air for 5min to remove surface moisture.

[0186] S420 the glove body is vertically immersed in the antiperspirant, the dipping time is 9s, and the pulling speed is 10cm / min.

[0187] After the dipping of S430 is completed, it is sent into a tunnel type oven for drying, the first stage drying temperature is 62℃, drying for 5 minutes, realizing low temperature setting to prevent bubble generation; the second stage drying temperature is 78℃, drying for 10 minutes, realizing latex film formation; the third stage drying temperature is 38℃, drying for 5 minutes, balancing moisture to avoid mint evaporation.

[0188] S500 demolding, pneumatic demolding machine is adopted, and the glove is blown off by using 0.5 MPa compressed air, and the glove is counted by a counting machine.

[0189] The above examples are detected, and the detection results are shown in the following table.

[0190] Table 1 Performance parameter table

[0191]

[0192] The above ordinary nitrile glove is a nitrile glove produced by our company (Shandong Yingke Medical Products Co., Ltd.), the product name is medical nitrile examination glove, and the intended use is to wear on the doctor's hand or finger to examine or palpate the patient's condition. The application scope is medical examination and nursing, and it plays a role of isolation and protection.

[0193] Obviously, the above examples are only examples for clearly illustrating, but not limitation to the embodiments. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and also impossible to enumerate all the embodiments. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A disposable antiperspirant nitrile glove characterized in that, The glove body and the antiperspirant layer attached to the glove body, the antiperspirant layer comprises the following raw materials by weight: carboxyl nitrile latex 85-95 parts, aluminum hydroxide chloride 3-8 parts, modified nanocellulose 2-4 parts, glycerol 1-2 parts, 0.5-1 part polyethylene glycol 6000, zinc oxide nanoparticles 2-3 parts, and mint extract 0.1-0.3 parts; the modified nanocellulose is prepared from nanocellulose modified by furfurylamine; the polyethylene glycol 6000 is used as a sustained-release carrier to coat the aluminum hydroxide chloride to form sustained-release particles with a size of ≤200 nm.

2. The disposable antiperspirant nitrile glove of claim 1, wherein, The raw materials of the glove body are calculated based on the latex dry basis content, and specifically include, by weight percentage: nitrile latex with a solid content of 40% 84.75%-84.85%, sulfur 2.50%-3.50%, zinc oxide 2.50%-3.50%, accelerator ZDBC 0.75%-0.85%, accelerator ZDEC 0.35%-0.45%, antioxidant 0.45%-0.55%, titanium white 2.50%-3.50%, blue pigment 1.50%-2.50%, dispersant one sodium salt of polyacrylic acid 1.40%-1.60%, and dispersant two alkylphenol polyoxyethylene ether 0.90%-1.10%.

3. The method of making a disposable antiperspirant nitrile glove of claim 2, wherein, The method comprises the following steps: S100 preparing an antiperspirant solution, the antiperspirant solution is prepared according to the raw material formula of the antiperspirant layer; S200 preparing a glove body; S300 surface pretreatment, the prepared glove body is subjected to surface pretreatment with sodium hypochlorite; S400 antiperspirant solution immersion, the glove body after surface pretreatment is immersed in the antiperspirant solution, and gradient drying is performed to form an antiperspirant layer; S500 demolding, air demolding machine is used for blowing.

4. The method of making a disposable antiperspirant nitrile glove of claim 3, wherein, The S100 of preparing the antiperspirant solution specifically comprises: S110 weighing each raw material according to the formula for standby use; S120 mixing aluminum hydroxide chloride and polyethylene glycol 6000 at 40°C and 800 rpm for 2h, and then performing cycle treatment 5 times under the pressure of 150MPa by using a high-pressure homogenizer to form ACH-PEG nano sustained-release particles; S130 first, carboxyl nitrile latex is added into a reaction kettle while stirring, and the modified nanocellulose is added in three times with an interval of ten minutes each time, and after the addition is completed, stirring is performed until complete dispersion to obtain a mixed solution; zinc oxide nanoparticles are dispersed into glycerol, and ACH-PEG nano sustained-release particles and mint extract are sequentially added into the mixed solution, and stirring is performed for 6h to obtain the antiperspirant solution.

5. The method of making a disposable antiperspirant nitrile glove of claim 3, wherein, The S200 of preparing the glove body specifically comprises: first, solid powders including zinc oxide, titanium white, and pigment are mixed with dispersant one and water to prepare a first dispersion by grinding, and then sulfur is mixed with dispersant two and water to prepare a second dispersion by grinding; then, the first dispersion, antioxidant, accelerator solution, and the second dispersion are sequentially added into nitrile latex; then, the pH is adjusted to 9.5-10.5, and stirring is performed for 2-4h until uniform, and aging is performed for 12h at 25°C; then, hand mold immersion, leaching, pre-vulcanization, edge rolling, and vulcanization are sequentially performed to obtain the glove body.

6. The method of making a disposable antiperspirant nitrile glove of claim 5, wherein, The mass concentration of the accelerator solution is 10%.

7. The method of making a disposable antiperspirant nitrile glove of claim 3, wherein, The S400 of antiperspirant solution immersion specifically comprises: S410 hot air drying of the glove body after surface pretreatment to remove surface moisture; S420 The glove body is vertically immersed into the antiperspirant lotion, and the immersion time is 6-9s, and the pulling speed is 10cm / min; S430 After the immersion, the glove body is sent into a tunnel type oven for drying, the first stage drying temperature is 58-62℃, the drying time is 5min; the second stage drying temperature is 78-82℃, the drying time is 10min; the third stage drying temperature is 38-42℃, the drying time is 5min.

8. The method of making a disposable antiperspirant nitrile glove of claim 3, wherein, The S300 surface pretreatment specifically comprises: soaking in a chlorine washing tank with 100ppm sodium hypochlorite for 1min, and then adjusting to neutral with NaHSO3 solution; and then washing with clean water for 2min.

9. The method of making a disposable antiperspirant nitrile glove of claim 5, wherein, The edge rolling and vulcanization specifically comprises: rolling 2-3mm at the opening of the latex glove by using an edge rolling machine; and then performing segmented vulcanization, the first stage vulcanization: 110-120℃, the vulcanization time is 15-20min; the second stage vulcanization: 100℃, the vulcanization time is 30min; and finally forced water cooling to below 40℃.

10. The method of making a disposable antiperspirant nitrile glove of claim 5, wherein, The hand mold immersion comprises latex immersion, the latex temperature is 25-30℃, the immersion time is 5-8s, and the hand mold pulling speed is 10cm / min.

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