CN114953293A - Preparation process of medical gloves capable of dividing holding force grades - Google Patents

Abstract

The invention provides a preparation process of medical gloves with different holding power grades, which comprises the following steps: s10, putting the dried and demoulded latex gloves into warm water for soaking and washing, and then putting the gloves into a shaking box for treatment; s11, when the surface of the glove in the shaking box is wet but free moisture does not exist, adding a slip agent with the concentration of 2.0-8.0% and continuing to shake until the surface of the glove does not have free moisture again; then closing a steam valve of the shaking box, opening an exhaust fan, and stopping operation after the temperature is reduced to 40 +/-2 ℃; s12, the medical gloves with different holding force grades can be obtained by adjusting the slip agents with different concentrations in the step S11. The gripping force grade of the medical gloves can be effectively and accurately controlled, the medical gloves with various different viscosities and different gripping forces can be prepared, and the use requirements of different medical workers can be met.

Description

A kind of preparation process of medical gloves with separable holding force grades

technical field

The invention relates to the technical field of medical devices, in particular to a preparation process of medical gloves capable of separating holding force levels.

Background technique

Due to its good softness and elasticity, natural latex gloves are incomparable to other materials in terms of fit to people and touch of objects after wearing. Solid rubber medical gloves have remained the main protective equipment for surgical operations for nearly a hundred years.

During inspection and surgery, rubber gloves can provide maximum flexibility and maneuverability. At the same time, according to the user's requirements, it can be made into partial pockmarked surface, full pockmarked surface or smooth surface to increase the friction of the glove surface. Ease of gripping the instrument. However, when it is designed as a local anesthesia or a general anesthesia, doctors usually feel that the gloves are not smooth enough when they are used for surgery, and the surgical instruments are a bit astringent or sticky, which is inconvenient to operate, and full-gloss gloves are used by doctors. It usually feels a little slippery, and the surgical instruments are easy to slip off when using, and the hand is unstable.

And each person's physique is different, the skin properties of the palm are different, and the same medical gloves feel different after wearing, and the current medical gloves' stick-slip degree (or grip level) is basically set uniformly, which cannot meet the needs of different users. Usage requirements.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a process for preparing medical gloves with different holding force levels, so as to solve at least one of the above-mentioned technical problems existing in the prior art.

In order to solve the above-mentioned technical problems, the present invention provides a process for preparing medical gloves that can be divided into grades of holding force, including the following steps:

S10. Put the dried and demolded latex gloves into warm water for washing, and then put the gloves into a shaking box for processing;

S11. When the surface of the gloves in the shaking box is wet but there is no free moisture, add a slip agent with a concentration of 2.0-8.0% and continue to shake until there is no free moisture on the surface of the gloves again; then turn off the steam valve of the shaking box and open the exhaust Air fan, the temperature drops to 40℃±2℃ (it takes about 20min) to stop running;

S12. Medical gloves with different gripping force levels can be obtained by adjusting the different concentrations of the slip agent in step S11.

In this application, the time point for adding the slip agent is particularly critical, that is, when there are no free water molecules on the surface of the glove, it is the best time point for adding the slip agent, because the gloves are too dry, and the slip agent is not easy to react with the gloves or physically occur. Adsorption, when there is free moisture on the surface of the glove, the slip agent cannot be adsorbed on the surface of the glove, or even if it is adsorbed, it is not firm or will fall off. When the process state is determined, the concentration of the slip agent can be adjusted to accurately control the gloves. The final stick-slip degree of , the grip level.

Further, the flat parts on the same medical glove are stacked up and down, the static friction coefficient and the kinetic friction coefficient of the glove are measured, and the gripping force level (stick-slip degree) of the glove is defined as follows according to the difference between the static friction coefficient and the dynamic friction coefficient:

1) The static friction coefficient is 0.71-0.75; the glove with the dynamic friction coefficient is 0.68-0.74 is grade S;

2) The static friction coefficient is 0.76-0.82; the glove with the dynamic friction coefficient is 0.74-0.80 is L grade;

3) The static friction coefficient is 0.83-1.0; the glove with the dynamic friction coefficient is 0.82-1.0 is T grade;

4) The static friction coefficient is 1.1-1.2; the glove with the dynamic friction coefficient is 1.2-1.3 is uL grade.

Among them, the S grade gloves feel too slippery when used, and it is not recommended to use them; the L grade gloves feel medium to high slippery when used, which can be used as the lower limit of the product's grip level; the T grade gloves feel moderately sticky and slippery when used. Moderate; uL-grade gloves feel sticky when used, which can be used as the upper limit of the product's grip level.

In addition, gloves with a static friction coefficient exceeding 1.2 and a dynamic friction coefficient exceeding 1.3 have poor hand feel to the wearer, and are not recommended for promotion and use as a main product in this application.

Further, in step S11, the concentration of the slip agent is 4-5.0%, and the prepared gloves are S grade; the concentration of the slip agent is 6-8%, and the prepared gloves are L grade; The concentration of the slip agent is 3-4%, and the prepared gloves are T grade; the concentration of the slip agent is 2-3%, and the prepared gloves are uL grade.

In the present application, medical gloves with different stick-slip grades can be obtained through precise regulation, and users can choose a suitable glove to wear by comparison, so as to meet the needs of different users.

Further, in the step S10, the temperature of the warm water is 48±2°C.

Further, in the steps S11 and S12, the steam flow rate of the shaking box is 0.45-0.6MPa; the temperature is set to 95±3°C, and the rotation speed is 30 rpm.

Further, in the steps S11 and S12, the input amount of gloves does not exceed 75% of the capacity of the shaking box.

Further, the slip agent is an acrylic mixed solution or an aqueous polyurethane emulsion.

Further, the latex component of the glove comprises by weight:

Further, the stabilizer is one or several of potassium hydroxide, sodium hydroxide, casein and ammonia water.

Further, the accelerator is one or both of the accelerator ZDC (zinc diethyl dithiocarbamate) and the accelerator PX (zinc ethyl phenyl dithiocarbamate).

Further, the antioxidant is one or two of 264 (BHT2,6-di-tert-butyl-p-cresol) and SP-P styrenated phenol.

Further, the active agent is one or more of zinc oxide, zinc carbonate, and other zinc salts.

Further, the dispersing agent is one or more of Peregrine O, NF (disodium methylene dinaphthalene sulfonate) and the like.

Further, the filler is one or both of white carbon black and calcium carbonate.

Wherein, when preparing gloves, the following steps are included:

S20. Press the raw latex into a stirring tank, and in a state of stirring, add a stabilizer and a diffusing agent in turn;

Turn on the hot water circulation pump to heat up (the water temperature of the hot water tank cannot exceed 70°C during the whole process). Between ~45°C, the treatment time is not less than 3 hours;

S21. When the glue temperature is above 36 ℃, add vulcanizing agent, accelerator, anti-aging agent and activator in turn; continue to heat up to 40-55 ℃ (the specific temperature is adjusted according to the demand of chloroform value); the holding time is more than 4 hours and The time required to reach the chloroform value is to discharge and park for more than 48 hours;

S22. Clean and dry the mold;

S23. Immerse the dried mold in a coagulant, the temperature of the coagulant is 48-60°C, and the time for the mold to stay in the coagulant is 3-5 seconds; dry the mold with the coagulant attached, and then immerse the mold into the coagulant. In the latex, the temperature of the latex is normal temperature (25-28) ℃, the time of the mold staying in the latex is 8-12 seconds, the mold with the latex is taken out and vulcanized and dried, and then the dried and vulcanized latex with curling The mold of the film is immersed in hot water, the temperature of the hot water is 75 ° C, and the time of the mold staying in the hot water is 16 seconds; the mold entering the hot water is taken out and dried, and then the mold is immersed in the isolation agent (the mold is in isolation. The residence time in the agent is 10 seconds), then take out, dry and demould to obtain latex gloves.

Adopt above-mentioned technical scheme, the present invention has following beneficial effect:

The invention provides a process for preparing medical gloves with different holding force grades, which avoids the technical problems that the full-gloss gloves treated by the traditional method are too slippery, and the partial or full hemp surface is sticky or astringent.

The application can effectively and accurately control the gripping force level of the medical gloves, and can prepare a variety of medical gloves with different viscosities and different gripping forces, which can meet the use requirements of different medical workers.

Detailed ways

The present invention will be further explained below in conjunction with specific embodiments. Obviously, the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The present embodiment discloses a preparation process for medical gloves with separable holding force levels, including the following steps:

S10. Put the dried and demolded latex gloves into warm water for washing, and then put the gloves into a shaking box for processing;

S11. When the surface of the gloves in the shaking box is wet but there is no free moisture, add a slip agent with a concentration of 2.0-8.0% and continue to shake until there is no free moisture on the surface of the gloves again; then turn off the steam valve of the shaking box and open the exhaust Air fan, the temperature drops to 40℃±2℃ (it takes about 20min) to stop running;

S12. Medical gloves with different gripping force levels can be obtained by adjusting the different concentrations of the slip agent in step S11.

Among them, the flat parts on the same medical gloves are stacked up and down, the static friction coefficient and kinetic friction coefficient of the gloves are measured, and the gripping force level (stick-slip degree) of the gloves is defined as follows according to the difference between the static friction coefficient and the dynamic friction coefficient:

1) The static friction coefficient is 0.71-0.75; the glove with the dynamic friction coefficient is 0.68-0.74 is grade S;

2) The static friction coefficient is 0.76-0.82; the glove with the dynamic friction coefficient is 0.74-0.80 is L grade;

3) The static friction coefficient is 0.83-1.0; the glove with the dynamic friction coefficient is 0.82-1.0 is T grade;

4) The static friction coefficient is 1.1-1.2; the glove with the dynamic friction coefficient is 1.2-1.3 is uL grade.

Among them, the S grade gloves feel too slippery when used, and it is not recommended to use them; the L grade gloves feel medium to high slippery when used, which can be used as the lower limit of the product's grip level; the T grade gloves feel moderately sticky and slippery when used. Moderate; uL-grade gloves feel sticky when used, which can be used as the upper limit of the product's grip level.

In addition, gloves with a static friction coefficient exceeding 1.2 and a dynamic friction coefficient exceeding 1.3 have poor hand feel to the wearer, and are not recommended for promotion and use as a main product in this application.

In step S11, when the concentration of the slip agent is 4-5.0%, the prepared gloves are grade S; when the concentration of the slip agent is 6-8%, the prepared gloves are grade L; the When the concentration of the slip agent is 3-4%, the prepared gloves are T grade; when the concentration of the slip agent is 2-3%, the prepared gloves are uL grade. When the concentration of the slip agent is lower than 2%, the prepared gloves are too sticky and not recommended for use.

In the present application, medical gloves with different stick-slip grades can be obtained through precise regulation, and users can choose a suitable glove to wear by comparison, so as to meet the needs of different users.

Wherein, in the step S10, the temperature of the warm water is 48±2°C. In steps S11 and S12, the steam flow rate of the shaking box is 0.45-0.6MPa; the temperature is set to 95±3°C, and the rotation speed is 30 rpm.

And, the input amount of gloves can be controlled at 70±5% of the capacity of the shaking box. Too large amount of gloves will cause uneven shaking, uneven dispersion of the slip agent on the outer surface of the gloves, too little amount of gloves will cause excessive power consumption, and too much slip agent accumulated on the surface of the gloves will cause the gloves to be too slippery and powdery. excessive.

In this embodiment, the latex component of the glove preferably comprises by weight:

Wherein, the stabilizer is one or several of potassium hydroxide, sodium hydroxide, casein and ammonia water. The accelerator is one or both of the accelerator ZDC (zinc diethyl dithiocarbamate) and the accelerator PX (zinc ethyl phenyl dithiocarbamate). The antioxidant is one or two of 264 (BHT2, 6-di-tert-butyl-p-cresol) and SP-P styrenated phenol. The active agent is one or more of zinc oxide, zinc carbonate, and other zinc salts. The dispersant is one or more of peregalin O, NF (disodium methylene dinaphthalene sulfonate) and the like. The filler is one or two of silica and calcium carbonate.

Wherein, when preparing gloves, the following steps are included:

S20. Press the raw latex into a stirring tank, and in a state of stirring, add a stabilizer and a diffusing agent in turn;

Turn on the hot water circulation pump to heat up (the water temperature of the hot water tank cannot exceed 70°C during the whole process). Between ~45°C, the treatment time is not less than 3 hours;

S21. When the glue temperature is above 36 ℃, add vulcanizing agent, accelerator, anti-aging agent and activator in turn; continue to heat up to 40-55 ℃ (the specific temperature is adjusted according to the demand of chloroform value); the holding time is more than 4 hours and The time required to reach the chloroform value is to discharge and park for more than 48 hours;

S22. Clean and dry the mold;

S23. Immerse the dried mold in a coagulant, the temperature of the coagulant is 48-60°C, and the time for the mold to stay in the coagulant is 3-5 seconds; dry the mold with the coagulant attached, and then immerse the mold into the coagulant. In the latex, the temperature of the latex is normal temperature (25-28) ℃, the time of the mold staying in the latex is 8-12 seconds, the mold with the latex is taken out and vulcanized and dried, and then the dried and vulcanized latex with curling The mold of the film is immersed in hot water, the temperature of the hot water is 75 ° C, and the time of the mold staying in the hot water is 16 seconds; the mold entering the hot water is taken out and dried, and then the mold is immersed in the isolation agent (the mold is in isolation. The residence time in the agent is 10 seconds), then take out, dry and demould to obtain latex gloves.

The present invention will be further explained below in conjunction with specific embodiments.

Example 1

Take latex gloves with a net weight of 65-68Kg (size 7.5: 295-308 pairs), soak them in warm water at 48±2°C, pick them up and put them into steam with a flow rate of 0.45-0.6MPa; set the temperature to 95 ±3°C, in a shaking box with a rotation speed of 30 rpm, shake until there is no free moisture on the surface of the glove; the specific treatment time is about 5-6min; then add a slip agent with a concentration of 6-8%, and continue to shake until the surface of the glove There is no free moisture (the time to continue running is about 55min), then open the steam valve and open the exhaust fan until the temperature of the shaking box drops to 40±2°C (the required time is about 18±2min), then stop working, take out the gloves to get Medical gloves with surfaces too slippery to be accepted. Among them, the slip agent is an acrylic mixed solution.

Example 2

Take latex gloves with a net weight of 68-70Kg (size is 7.5: 309-318 pairs), soak them in 48±2℃ warm water, pick them up and put them in the steam with a flow rate of 0.45-0.6MPa; set the temperature to 95±3 ℃, in a shaking box with a rotation speed of 30 rpm, shake until there is no free moisture on the surface of the glove (about 5-6min); then add a slip agent with a concentration of 4-5.0% and continue to shake (the continuous running time is about 58min) , until there is no free moisture on the surface of the gloves, then open the steam valve, open the exhaust fan, shake until the temperature of the shaking box drops to 40 ± 2 °C, and then stop running, take out the gloves to obtain a medical glove with a smooth but acceptable surface. Among them, the slip agent is an acrylic mixed solution.

Example 3

Take latex gloves with a net weight of 70-72Kg (size is 7.5: 318-327 pairs), soak them in 48±2℃ warm water, pick them up and put them in the steam flow rate of 0.45-0.6MPa; set the temperature to 95±3 ℃, in a shaking box with a rotation speed of 30 rpm, until there is no free moisture on the surface of the glove (about 5-6min); then add a slip agent with a concentration of 3-4% and continue to shake (the continuous running time is about 60min), Until there is no free moisture on the surface of the gloves, open the steam valve and open the exhaust fan until the temperature of the shaking box drops to 40±2°C (the time is about 20min). Take out the gloves to obtain a medical glove with moderate stickiness and easy to wear. Among them, the slip agent is an acrylic mixed solution.

Example 4

Take latex gloves with a net weight of 72-75Kg (size 7.5: 327-341 pairs), soak them in 48±2°C warm water, pick them up and put them in a steam flow rate of 0.45-0.6MPa; set the temperature to 95±3 ℃, the rotation speed is 30 rpm in a shaking box, until there are no free water molecules on the surface of the glove (about 5-6min); then add a slip agent with a concentration of 2-3% and continue to shake (the continuous running time is about 60min) , until there is no free moisture on the surface of the gloves, then open the steam valve, open the exhaust fan, until the temperature of the shaking box drops to 40 ± 2 °C (the processing time is about 20 minutes), take out the gloves to get a sticky, but acceptable medical gloves . Among them, the slip agent is an acrylic mixed solution.

See the table below for the test and detection data of the above examples.

The invention provides a process for preparing medical gloves with different holding force grades, which avoids the technical problems that the full-gloss gloves treated by the traditional method are too slippery, and the partial or full hemp surface is sticky or astringent.

The application can effectively and accurately control the gripping force level of the medical gloves, and can prepare a variety of medical gloves with different viscosities and different gripping forces, which can meet the use requirements of different medical workers.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present invention. scope.

Claims (10)

1. a medical glove preparation process that can be divided into a holding force grade, is characterized in that, comprises the steps: S10. Put the dried and demolded latex gloves into warm water for washing, and then put the gloves into a shaking box for processing; S11. When the surface of the gloves in the shaking box is wet but there is no free moisture, add a slip agent with a concentration of 2.0-8.0% and continue to shake until there is no free moisture on the surface of the gloves again; then turn off the steam valve of the shaking box and open the exhaust Air fan, stop running after the temperature drops to 40℃±2℃; S12. Medical gloves with different gripping force levels can be obtained by adjusting the different concentrations of the slip agent in step S11. 2. The preparation process of medical gloves with separable holding force grades according to claim 1, characterized in that, the flat parts on the same medical gloves are stacked up and down, the static friction coefficient and the dynamic friction coefficient of the gloves are measured, and according to The different coefficients of static and kinetic friction define the grip level of a glove as follows: 1) The static friction coefficient is 0.71-0.75; the glove with the dynamic friction coefficient is 0.68-0.74 is grade S; 2) The static friction coefficient is 0.76-0.82; the glove with the dynamic friction coefficient is 0.74-0.80 is L grade; 3) The static friction coefficient is 0.83-1.0; the glove with the dynamic friction coefficient is 0.82-1.0 is T grade; 4) The static friction coefficient is 1.1-1.2; the glove with the dynamic friction coefficient is 1.2-1.3 is uL grade. 3 . The preparation process of medical gloves with separable holding force grades according to claim 2 , wherein, in step S11 , the concentration of the slip agent is 4-5.0%, and the prepared gloves are grade S; 3 . The concentration of the slip agent is 6-8%, and the prepared gloves are L grade; the concentration of the slip agent is 3-4%, and the prepared gloves are T grade; the concentration of the slip agent is 2-3%, the resulting gloves are uL grade. 4 . The preparation process of medical gloves with separable holding force grades according to claim 1 , wherein, in the step S10 , the temperature of the warm water is 48±2° C. 5 . 5 . The preparation process of medical gloves with separable holding force grades according to claim 1 , wherein in the steps S11 and S12 , the steam flow of the shaking box is 0.45-0.6 MPa; the temperature is set to 95±3℃, the speed is 30 rpm. 6 . The preparation process of medical gloves with separable holding force grades according to claim 1 , wherein in the steps S11 and S12 , the input amount of the gloves does not exceed 75% of the capacity of the shaking box. 7 . 7. The process for preparing medical gloves with a separable holding force grade according to claim 1, wherein the latex component of the gloves comprises by weight:

8. The preparation process of medical gloves with separable holding power grades according to claim 7, wherein the stabilizer is one or more of potassium hydroxide, sodium hydroxide, casein and ammonia; And/or, described accelerator is one or both in accelerator ZDC, accelerator PX; And/or, the antioxidant is one or two of 264, SP-P styrenated phenol; And/or, the active agent is one or more of zinc oxide, zinc carbonate, and other zinc salts. 9. The preparation process of the medical gloves that can be divided into holding force grades according to claim 7, wherein the dispersant is one or more of peregal 0 and NF; And/or, the filler is one or both of silica and calcium carbonate. 10. The preparation process of medical gloves with separable holding force grades according to claim 7, characterized in that, when preparing the gloves, comprising the following steps: S20. Press the raw latex into a stirring tank, and in a state of stirring, add a stabilizer and a diffusing agent in turn; Turn on the hot water circulating pump to heat up the latex through the circulating hot water in the jacket for pretreatment, the temperature is between 30°C and 45°C, and the treatment time is not less than 3 hours; S21. When the glue temperature is above 36°C, add vulcanizing agent, accelerator, antioxidant, and activator in turn; continue to heat up to 40-55°C; hold the temperature for more than 4 hours and the required time to reach the chloroform value, discharge and park for more than 48 hours; S22. Clean and dry the mold; S23. Immerse the dried mold in a coagulant, the temperature of the coagulant is 48-60°C, and the time for the mold to stay in the coagulant is 3-5 seconds; dry the mold with the coagulant attached, and then immerse the mold into the coagulant. In the latex, the temperature of the latex is room temperature, and the mold stays in the latex for 8-12 seconds. The mold with the latex is taken out and vulcanized and dried. After that, the mold with the rolled latex film after drying and vulcanization is immersed in hot water. , the temperature of the hot water is 75°C, and the mold stays in the hot water for 16 seconds; take out the mold that has entered the hot water and dry it, then immerse the mold in the release agent, then take it out to dry and demold it. Get latex gloves.