CN116675915A

CN116675915A - Nitrile rubber ice glove and manufacturing method thereof

Info

Publication number: CN116675915A
Application number: CN202310709058.2A
Authority: CN
Inventors: 李平; 赵庆雄; 李羽枝; 王风光
Original assignee: Anhui Nanfang Medical Products Co ltd
Current assignee: Anhui Nanfang Medical Products Co ltd
Priority date: 2023-06-14
Filing date: 2023-06-14
Publication date: 2023-09-01

Abstract

The invention discloses a nitrile rubber ice glove and a manufacturing method thereof, relating to the technical field of glove manufacturing; the nitrile rubber ice feel glove comprises the following raw materials: nitrile latex, coagulant and coating liquid; the nitrile latex comprises the following components in parts by weight: 100 parts of nitrile rubber emulsion, 1.0-3.0 parts of stabilizer, 1.0-2.5 parts of vulcanizing agent, 1.2-3.5 parts of active agent, 0.5-1.5 parts of accelerator, 0.0-2.0 parts of age inhibitor, 3.0-10.0 parts of ice feeling agent and 86.5-104.0 parts of soft water; the manufacturing method comprises the following steps: washing a die, immersing a coagulant, drying the coagulant, immersing the coagulant for the first time, immersing the coagulant for the second time, shaping, leaching before, curling, immersing a coating layer, drying and vulcanizing, leaching after, immersing the coagulant, drying, demolding and checking; according to the nitrile rubber ice feeling glove, the ice feeling agent is added when the latex of the glove is prepared, so that the surface temperature of the glove is lower than the temperature of a human body, and the glove can feel cool when being used.

Description

Nitrile rubber ice glove and manufacturing method thereof

Technical Field

The invention belongs to the technical field of glove manufacturing, and particularly relates to a nitrile rubber ice feeling glove and a manufacturing method thereof.

Background

A great deal of manual work is required in each industry, and the work is performed by means of hand operation. However, as chemical agents are widely used, part of the chemical agents have great damage to human skin under long-time contact, so more work needs to reduce damage to the human skin by wearing gloves. Meanwhile, the glove is worn to avoid the hand bacteria from infecting and contacting articles, so that the sanitary condition is improved. In the industries of electronics factories, medical examination, food industry, chemical industry, aquaculture industry, glassware, scientific research and the like, a large number of works can be carried out by wearing gloves.

At present, the nitrile rubber gloves are worn more, and the glove can be attached to the skin of the hand, so that the hand can still work flexibly after the glove is worn. Especially in medical industry need wear disposable butyronitrile rubber gloves strictly and carry out medical examination, wear butyronitrile rubber glove work can effectively keep apart the foreign matter, also ensure sanitary safety, but make the hand not contact the air equally, under the circumstances of wearing gloves for a long time, especially summer high temperature festival, easily lead to the hand stuffiness to produce the discomfort. In this way, the nitrile rubber ice feeling glove is studied, so that the stuffiness condition generated by wearing the glove can be relieved.

Disclosure of Invention

The invention aims to provide a nitrile rubber ice glove and a manufacturing method thereof, which are used for solving the problems of stuffy and uncomfortable hand wearing of the nitrile rubber glove in the prior art.

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

the nitrile rubber ice feel glove comprises the following raw materials: nitrile latex, coagulant and coating liquid;

the nitrile latex comprises the following components in parts by weight: 100 parts of nitrile rubber emulsion, 1.0-3.0 parts of stabilizer, 1.0-2.5 parts of vulcanizing agent, 1.2-3.5 parts of active agent, 0.5-1.5 parts of accelerator, 0.0-2.0 parts of anti-aging agent, 3.0-10.0 parts of ice feeling agent and 86.5-104.0 parts of soft water.

Preferably, the coagulant comprises the following components in percentage by weight: 10.0 to 25.0 percent of calcium nitrate, 1.0 to 2.5 percent of isolating agent, 0.1 percent of wetting agent and the balance of soft water.

Preferably, the coating liquid comprises the following components in percentage by weight: 10.0 to 15.0 percent of coating stock solution and 88.0 to 92.0 percent of soft water.

Preferably, the preparation of the nitrile latex is as follows:

putting the nitrile rubber emulsion into a stirring barrel, slowly adding a stabilizer, a vulcanizing agent, an active agent, an accelerator, an anti-aging agent and soft water in a stirring state, and stirring for 24 hours;

adding diluted ice feeling agent and residual soft water into the mixed solution in a stirring state to ensure that the solid content of the nitrile latex reaches 20-35 percent;

the nitrile latex is filtered and loaded by a 120-mesh screen and parked for more than 24 hours to foam.

Preferably, the coagulant is prepared as follows:

soft water is added into a stirring barrel, calcium nitrate is continuously added, and after the calcium nitrate is fully dissolved, a release agent and a wetting agent are added, and stirring and defoaming are carried out for more than 24 hours.

Preferably, the preparation of the coating liquid is specifically as follows:

soft water is added into the stirring barrel, the coating stock solution is continuously added, and stirring is carried out for more than 4 hours.

The manufacturing method of the nitrile rubber ice glove comprises the following steps:

s1, washing a die; washing the hand mould with acid and then alkali, washing the hand mould, and drying and heating; the concentration of acid in the pickling tank is controlled to be 3-5%, and the concentration of alkali in the alkaline tank is controlled to be 4-6%;

the acid and alkali tanks are sprayed with clean water to the hand mould.

S2, immersing a coagulant; immersing the heated hand mold in a coagulant heated to 50 ℃;

the coagulant is clean and bubble free.

The coagulant tank control index is as follows: the content of calcium nitrate is 10-25%, the content of powder is 1.0-2.5%, the temperature is 45-60 ℃, and the stirring rotation speed (revolutions per minute) is 15-50.

S3, drying the coagulant; drying the hand mould with the coagulant in a coagulant oven at 80-150 ℃ for 5-10 min; ensuring the drying of the coagulant on the hand mould.

S4, primary gum dipping; immersing the dried hand mould with the coagulant into the nitrile latex, immersing the uppermost blue line of the hand mould for 5 seconds, lifting the hand mould and continuously turning the hand mould to ensure that the nitrile latex flows uniformly, and placing and coagulating the hand mould after being taken out;

the latex control index is as follows: the total solid content of the latex is 20-35%, the pH is 9.5-13.0, the temperature is 25-40 ℃, and the stirring rotation speed (revolutions per minute) is 15-50.

S5, performing secondary gum dipping; immersing the hand mould with the first adhesive film layer into the nitrile latex of the second adhesive film layer for 5 seconds, lifting the hand mould and continuously turning the hand mould;

S6, shaping; placing the hand mould with the glue evenly in an electric heating constant temperature drying oven for 5-10 minutes, and setting the temperature to be 60-90 ℃;

setting is the process of completely solidifying the adhesive film attached to the hand mold.

S7, pre-leaching; immersing the shaped hand mould in hot water at 60-70 ℃ for half a minute, lifting the hand mould to drip water, and putting the hand mould into a drying box for vulcanization and drying;

leaching is a process of dissolving soluble substances in the adhesive film in water, and is a process of removing proteins, alkali, salt and other substances which are unfavorable for glove performance in the adhesive film. The leach water must be clean water and the process must be run with sufficient continuous clean water charge to keep it continuously fresh. The leaching water temperature is controlled at 60-70 ℃;

s8, curling and dip-coating; manually curling the leached hand mould and immersing the hand mould into coating liquid;

the dip coating is used for attaching a layer of polymer which is very smooth after being dried on the surface of the rubber mold, so that the glove is convenient to use and wear. The coating liquid in the coating tank is required to be bubble-free, and the coating layer is required to flow.

The hemming is used for facilitating demolding and wearing of the glove. The required hemming is round, uniform, firm, moderate in size, free of side bubbles and twisted sides. The curled hair brush needs to be suitable in tightness and hardness to enable curled hair to meet the requirements.

The index of dip coating control is as follows: the solid content is 1.0-3.0%, the temperature is 20-35 ℃, and the stirring speed is 15-50 rpm.

S9, drying and vulcanizing; the drying temperature is controlled at 80-90 ℃ in the early stage of drying and vulcanization, the time is 20 minutes, the drying temperature is increased to 120-130 ℃ in the later stage, and the drying is continued for 25 minutes, so that the inside of the adhesive film generates vulcanization crosslinking reaction;

the adhesive film drying and vulcanization of the glove are carried out at a certain temperature. When the moisture of the adhesive film is more, the temperature cannot be raised too high, so that the surface of the adhesive film is prevented from being dried too fast due to the too high surface temperature of the adhesive film, and the moisture inside the adhesive film is prevented from being volatilized. The temperature of the hot vulcanizing furnace is generally controlled to be 80-100 ℃, and the hot vulcanizing furnace enters a dry vulcanizing furnace after most of the moisture of the adhesive film is evaporated, and the temperature can be raised to 120-160 ℃ at the moment, so that the inside of the adhesive film generates vulcanization crosslinking reaction.

S10, post leaching; immersing the hand mould in hot water at 70-80 ℃ for 1min to expand the adhesive film;

the former leaching removes most of the soluble substances, and for more complete removal of impurities, soluble alkali, salt and the like in the glove are removed for the most part by immersing in clear water with higher temperature than the former leaching, and the water temperature is controlled between 60 ℃ and 80 ℃.

S11, drying; the drying temperature is controlled at 80-90 ℃, the drying is carried out for 5min, and the moisture on the surface of the adhesive film is dried;

the leached glove surface has more water, and can be smoothly demoulded after being dried. The drying temperature is controlled at 80-120 ℃.

S12, demolding; taking out the vulcanized and dried adhesive film by manual demolding;

the process of removing the dried glove from the hand form is called stripping. Manual demolding is used to prevent the breaking or sticking and folding.

S13, checking; drying and cooling the adhesive film to obtain the nitrile rubber ice glove; and (5) carrying out tensile property test on the nitrile rubber ice glove according to the quality standard.

Preferably, the following steps are further included between S10 and S11:

an ice-soaking agent; the hand mold was immersed in a solution containing 2% ice feel agent.

Compared with the prior art, the invention has the beneficial effects that:

(1) According to the nitrile rubber ice feeling glove, the ice feeling agent is added when the latex of the glove is prepared, so that the surface temperature of the glove is lower than the temperature of a human body, and the glove can feel cool when being used. And the nitrile rubber ice glove contains menthol essence, so that the skin telangiectasis is realized by exciting the central nervous system, and the synthesis of adenosine triphosphate is accelerated, thereby accelerating sweat gland secretion and heat dissipation, and further generating a cooling sensation. This results in not only a protective effect on the hands when the glove is used, but also a pleasant, comfortable effect on the user.

(2) According to the manufacturing method of the nitrile rubber ice feeling glove, the thickness of the glove can be properly controlled according to the requirements of a user on the thickness, comfort degree and ice feeling degree of the glove. The nitrile rubber ice glove is more comfortable to wear and has obvious cooling effect compared with the common nitrile rubber glove.

Drawings

FIG. 1 is a process flow diagram of a method for making a nitrile rubber ice feel glove of the present invention;

FIG. 2 is a physical diagram of the nitrile rubber ice feel glove prepared in example 1 of the present invention.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Example 1:

in this example, the proportions and formulation of the nitrile latex are shown in Table 1:

TABLE 1

The preparation method of the nitrile latex comprises the following steps:

a1, putting the nitrile rubber emulsion into a stirring barrel, slowly adding the diluted stabilizer in a stirring state, slowly adding the vulcanizing agent, the active agent, the accelerator and the anti-aging agent, adding a proper amount of soft water, and stirring for 24 hours;

a2, after the mixed solution is stirred for reaching the standard, adding the diluted ice feeling agent and the rest soft water into the mixed solution, and uniformly stirring to ensure that the solid content of the nitrile latex reaches 20% -35%;

a3, filtering and loading the latex into another barrel by using a 120-mesh screen, removing bubbles on the surface of the latex, and standing for 24 hours for later use;

the ice feeling agent can adopt menthol essence.

In this example, the ratio and formula of the coagulant are shown in table 2:

TABLE 2

Raw materials	Proportioning of	Formulation of
			Calcium nitrate	18.0	3.6
Release agent	2.0	0.4
			Wetting agent	0.1	0.02
Soft water	Proper amount of	16
			Totalizing	100	20

The preparation method of the coagulant comprises the following steps:

soft water is added into a stirring barrel, calcium nitrate is added under the stirring state, and after the calcium nitrate is fully dissolved, a release agent and a wetting agent are added, and stirring and defoaming are carried out for 24 hours, so that bubbles are eliminated for later use.

In this example, the ratio and formula of the coating liquid are shown in table 3:

TABLE 3 Table 3

Raw materials	Proportioning of	Formulation of
			Coating stock solution	12.0	2.4
Soft water	88.0	17.6
			Totalizing	100	20

The preparation method of the coating liquid comprises the following steps:

soft water is added into a stirring barrel, the coating stock solution is continuously added and stirred, and the stirring is carried out for 4 hours, so that the coating is completely and uniformly dispersed for later use.

Example 2:

the nitrile rubber ice feel glove material prepared in example 1 was used to make a nitrile rubber ice feel glove.

The preparation work of each procedure when the nitrile rubber ice feeling glove is manufactured is as follows:

and after the production conditions are met, the production line is started after checking that all equipment facilities of the production line are normal, and the temperature is increased, so that the temperatures of all the water tanks, the coagulant tanks and all the ovens reach the production requirements, and then the machine is started for production.

The control requirements for each step are shown in Table 4:

TABLE 4 Table 4

Referring to fig. 1, the method for manufacturing the nitrile rubber ice glove comprises the following steps:

s1, washing a die: taking a clean ceramic hand mould, pickling washing liquor for half a minute, washing with clear water, pickling alkaline washing liquor for half a minute, taking out, washing with clear water, scrubbing with washing powder, putting into an electrothermal constant-temperature drying box for drying at 80-90 ℃, and drying the hand mould surface in a moist, reflective and non-crystalline state for about 5-10 minutes;

s2, immersing a coagulant: immersing the heated hand mould into the coagulant heated to 50 ℃, and immersing the hand mould into the blue line slightly exceeding the hand mould;

s3, drying a coagulant: putting the hand mould with the coagulant into an electric heating constant temperature drying oven for drying at 80-90 ℃ for 5-10 minutes;

s4, primary gum dipping: stopping stirring of a rubber barrel of the first rubber layer, moving a stirring blade to the extreme edge, removing rubber or bubbles on the rubber surface, slowly immersing a hand mould which reaches the standard and is immersed with a coagulating agent into the rubber latex, immersing the hand mould into the uppermost blue line of the hand mould for 5 seconds, slowly lifting the hand mould, continuously turning the hand mould by hands to enable the rubber latex to flow uniformly, and placing the hand mould with the rubber film on a tabletop for standing for a few minutes;

s5, secondary gum dipping: after the latex is completely coagulated, checking the latex of the second layer of glue, stopping stirring, moving the stirring blade aside, removing the rubber and bubbles, immersing the hand mould with the first layer of glue film into the latex of the second layer of glue film for about 5 seconds, slowly lifting the hand mould, and rotating the hand mould;

s6, shaping: and (3) putting the hand mould with the glue evenly into an electric heating constant temperature drying oven for 5-10 minutes, wherein the temperature of the drying oven is controlled to be 80-100 ℃.

S7, pre-leaching: immersing the shaped hand mould in hot water at 60-70 ℃ for half a minute, lifting the hand mould, dripping water, and putting the hand mould into a drying box for vulcanization and drying.

S8, curling and dip-coating: the leached hand form was manually hemmed and then immersed in the coating, taking care not to leach beyond the hemming location.

S9, drying and vulcanizing: the temperature is controlled at 80-90 ℃ for about 20 minutes in the early stage of drying and vulcanization, and then the drying temperature is increased to 120-130 ℃ for continuous drying for about 25 minutes.

S10, post leaching: the glove is immersed in hot water at about 70-80 ℃ for one minute to expand the glove.

S11, an ice dipping feeling agent: immersed in a solution containing 2% ice feel agent.

S12, final drying: drying at 80-120 deg.c for 5min to dry the glove surface water completely.

S13, demolding: taking out the vulcanized and dried glove, and manually demolding, wherein the glove is not required to be broken or stuck and folded. The prepared nitrile rubber ice glove is shown in figure 2.

S14, checking: and (5) checking the appearance of the removed glove, and selecting qualified gloves which do not meet the appearance requirements and packaging the qualified gloves.

S15, testing the tensile property of the glove.

In the embodiment, the tensile property of the glove is checked, and 13 prepared nitrile rubber ice gloves are randomly extracted to check the tensile property; the test results are shown in Table 5 and Table 6, wherein Table 5 shows the properties of the glove before aging, and Table 6 shows the properties of the glove after aging. The test result meets the tensile property requirement of GB110213 disposable medical rubber examination gloves.

TABLE 5

TABLE 6

Numbering device	Breaking force N	Elongation at break%
			1	10.8	580
2	11.5	550
			3	13.7	580
4	12.8	540
			5	13.6	560
6	11.7	560
			7	10，9	520
8	12.7	620
			9	13.6	570
10	12.5	550
			11	11.6	550
12	12.7	520
			13	13.9	550

The foregoing is only for aiding in understanding the method and the core of the invention, but the scope of the invention is not limited thereto, and it should be understood that the technical scheme and the inventive concept according to the invention are equivalent or changed within the scope of the invention by those skilled in the art. In view of the foregoing, this description should not be construed as limiting the invention.

Claims

1. The nitrile rubber ice feel glove is characterized by comprising the following raw materials: nitrile latex, coagulant and coating liquid;

2. The nitrile rubber ice feel glove of claim 1, wherein the coagulant comprises the following components in weight percent: 10.0 to 25.0 percent of calcium nitrate, 1.0 to 2.5 percent of isolating agent, 0.1 percent of wetting agent and the balance of soft water.

3. The nitrile rubber ice feel glove according to claim 2, wherein the coating liquid comprises the following components in percentage by weight: 10.0 to 15.0 percent of coating stock solution and 88.0 to 92.0 percent of soft water.

4. A nitrile latex ice feel glove according to claim 3, wherein the nitrile latex is prepared as follows:

5. A nitrile rubber ice feel glove according to claim 3, wherein the coagulant is prepared as follows:

6. A nitrile rubber ice feel glove according to claim 3, wherein the coating liquid is prepared as follows:

7. The method for manufacturing the nitrile rubber ice feel glove according to any one of claims 1 to 6, comprising the following steps:

s1, immersing a coagulant; immersing the hand mould in a coagulant heated to 50 ℃;

s2, drying the coagulant; drying the hand mould with the coagulant in a coagulant oven at 80-90 ℃ for 5-10 min;

s3, primary gum dipping; immersing the dried hand mould with the coagulant into the nitrile latex, immersing the uppermost blue line of the hand mould for 5 seconds, lifting the hand mould and continuously turning the hand mould to ensure that the nitrile latex flows uniformly, and placing and coagulating the hand mould after being taken out;

s4, performing secondary gum dipping; immersing the hand mould with the first adhesive film layer into the nitrile latex of the second adhesive film layer for 5 seconds, lifting the hand mould and continuously turning the hand mould;

s5, shaping; placing the hand mould with the glue evenly in an electric heating constant temperature drying oven for 5-10 minutes, and setting the temperature to be 60-90 ℃;

s6, pre-leaching; immersing the shaped hand mould in hot water at 60-70 ℃ for half a minute, lifting the hand mould to drip water, and putting the hand mould into a drying box for vulcanization and drying;

s7, curling and dip-coating; manually curling the leached hand mould and immersing the hand mould into coating liquid;

s8, drying and vulcanizing; the drying temperature is controlled at 80-90 ℃ in the early stage of drying and vulcanization, the time is 20 minutes, the drying temperature is increased to 120-130 ℃ in the later stage, and the drying is continued for 25 minutes, so that the inside of the adhesive film generates vulcanization crosslinking reaction;

s9, post leaching; immersing the hand mould in hot water at 70-80 ℃ for 1min to expand the adhesive film;

s10, drying; the drying temperature is controlled at 80-90 ℃, the drying is carried out for 5min, and the moisture on the surface of the adhesive film is dried;

s11, demolding; and taking out the vulcanized and dried adhesive film by manual demolding, and drying and cooling the adhesive film to obtain the nitrile rubber ice glove.

8. The method for manufacturing a nitrile rubber ice feel glove according to claim 7, further comprising the steps between S10 and S11 of:

9. The method for manufacturing the nitrile rubber ice feel glove according to claim 7, further comprising the following steps before S1:

washing a mold; washing the hand mould with acid and then alkali, washing the hand mould, and drying and heating; the concentration of acid in the acid washing tank is controlled to be 3-5%, and the concentration of alkali in the alkali washing tank is controlled to be 4-6%.

10. The method for manufacturing a nitrile rubber ice feel glove according to claim 7, further comprising the following steps after S11:

checking; and (5) carrying out tensile property inspection on the nitrile rubber ice glove according to the quality standard, and then packaging and warehousing.