Production method of sweat-absorbent towel with temperature monitoring function

Abstract

The invention discloses a production method of a sweat-absorbent towel with a temperature monitoring function, and relates to the technical field of sweat-absorbent towels and selection and design of carriers. All-cotton gauze verified through experiments is selected, the thickness of the gauze is 3-4 layers, and the balance of the water absorption rate and the water retention rate is ensured; in order to increase the durability of the gauze, a layer of hydrophobic fibers is compounded on the outer surface of the gauze, and the sweat-absorbent towel can be obtained; preparing an indicator solution and preparing a bromocresol green solution; the concentration of the solution is controlled to be 0.4 mg / mL; preparing a sodium alginate solution, respectively taking 50ml of the bromocresol green solution and 50ml of the sodium alginate solution, namely mixing and uniformly stirring according to a volume ratio of 1: 1 to form a mixed solution; the mixed solution of the bromocresol green solution and the sodium alginate solution is adopted, the buffer solution is added to serve as the indicator, the bromocresol green solution is stable and rich in color, the bromocresol green solution turns blue from dark green after meeting water, the bromocresol green solution is an ideal color indicator, and the indication effect is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sweat-absorbing towels, and particularly relates to a production method of a sweat-absorbing towel with temperature monitoring function. BACKGROUND

[0002] Children are lively and active by nature, and have vigorous metabolism, and sweat frequently and a lot after intense exercise. Remember that when I was a child, the elders always dressed me in many clothes, and the back was often wet with sweat, and the clothes were also wet, which was not only very uncomfortable, but also easy to catch a cold due to the invasion of cold wind. Now parents usually use sweat-absorbing towels to help children absorb sweat and keep the back and clothes dry, which plays a certain role in preventing colds.

[0003] In the prior art, the sweat-absorbing towel generally does not have a temperature monitoring function, and when the moisture of the sweat-absorbing towel is too large to further absorb moisture, parents cannot judge to replace it in time, which affects the use effect of the sweat-absorbing towel, and therefore it is urgent to research a sweat-absorbing towel with temperature monitoring function to change this situation. SUMMARY

[0004] The present application relates to the technical field of sweat-absorbing towels, and particularly relates to a production method of a sweat-absorbing towel with temperature monitoring function.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme:

[0006] A production method of a sweat-absorbing towel with temperature monitoring function, comprising the following steps:

[0007] Step 1: selection and design of carrier

[0008] Full cotton gauze verified by experiment is selected, and the thickness of the gauze is 3-4 layers to ensure the balance of water absorption rate and water retention rate; in order to increase the durability of the gauze, a layer of hydrophobic fiber is compounded on the outer surface of the gauze, and the sweat-absorbing towel is obtained;

[0009] Step 2: preparation of indicator solution

[0010] Bromocresol green solution is prepared, and the solution concentration is controlled at 0.4 mg / mL; sodium alginate solution is configured, 50 ml of bromocresol green solution and 50 ml of sodium alginate solution are taken, i.e. mixed and stirred uniformly according to the volume ratio of 1:1 to form a mixed solution, and a buffer solution is added to adjust the PH of the mixed solution to 3.45;

[0011] Step 3: dipping

[0012] Dip the cotton cloth into the mixed solution completely, and stand for 15 minutes to ensure that the cotton cloth fully absorbs the mixed solution; after taking out, shake off the excess liquid;

[0013] Step four: crosslinking and curing

[0014] Prepare a CaCl2 solution with a concentration of 5% to 10%; dip the impregnated cotton cloth into the CaCl2 solution for 5 minutes, and take it out to drain; rinse the surface of the cotton cloth with deionized water to remove unreacted CaCl2; place the cotton cloth in a hot air drying oven at 50 DEG C for 1 h to form a stable gel-color composite layer, and a color-developing sheet is obtained;

[0015] Step five: color development effect test

[0016] After the color-developing sheet is fixed, it is immersed in water, and it is observed that the color-developing sheet changes from yellow to blue; then the color-developing sheet is placed in an oven, and then immersed in water again, and the process is repeated several times to observe the color change; at the same time, the color-developing sheet after washing with laundry detergent is also observed in the same way;

[0017] Step six: color-developing sheet installation and fixation

[0018] A sweat guide strip is installed at the bottom of the color-developing sheet, an embedded port is formed on the surface of the sweat absorbing pad, the sweat guide strip is inserted into the embedded port, and the color-developing sheet is fixed with the anti-shedding head at the top of the sweat absorbing pad by using a magic tape.

[0019] The application further provides that the carrier needs to be tested for water absorption performance, and the testing method comprises the following steps:

[0020] Cut the sweat absorbing pad into a square sample with a size of 5cm*5cm, and weigh the mass M0 of the sample in a completely dry state;

[0021] Add a proper amount of deionized water into a glass dish, immerse the sample into the water with tweezers, and simultaneously start timing, and take out the sample quickly after 3s; drain until there is no continuous dripping, and record the mass Mt of the sample at this time;

[0022] Completely immerse the sweat pad sample in water to make it saturated, and record the saturated mass Mc of the sample; repeat the test on two identical samples.

[0023] The application further provides that the calculation formula of the water absorption rate of the sweat absorbing pad is: In the formula, alpha is the water absorption rate of the sweat pad sample, M0 is the mass of the sweat pad in a completely dry state, Mt is the mass of the sweat pad after absorbing water for t time, and t is the water absorption time; the greater the water absorption rate alpha, the faster the water absorption speed.

[0024] The application further provides that the calculation formula of the water absorption rate of the sweat absorbing pad is: In the formula: β is the water absorption rate of the sweat towel sample; M0 is the mass of the sweat towel when it is completely dry; and Mh is the mass of the sweat towel sample when it is saturated with water; the water absorption rate β reflects how much water is absorbed by unit mass of the sweat towel, and the higher the value, the better the water absorption performance.

[0025] The application further provides that the carrier needs to be tested for water retention performance, and the testing method comprises the following steps:

[0026] A 5cm*5cm sweat towel sample is completely immersed in water, and a weight is applied to remove part of the water, and the wet weight of the dehydrated sweat towel is weighed and recorded as Mc;

[0027] The percentage of the mass of the water involved in the sweat towel sample to the mass of the sweat towel sample, i.e., the water retention rate, is investigated.

[0028] The application further provides that the water retention rate calculation formula is: In the formula, γ is the water retention rate of the sweat towel sample; M0 is the mass of the sweat towel when it is completely dry; and Mc is the mass of the sweat towel sample when it is saturated with water.

[0029] The application further provides that the preparation method of the bromocresol green solution is as follows: about 40mg of bromocresol green is weighed and dissolved in 100ml of water; a citric acid-sodium citrate buffer is used to adjust the pH of the solution to 3.5, at which time the color of the solution changes to yellow; in order to fix the bromocresol green, 100ul of glycerol is added and stirred uniformly.

[0030] The application further provides that the preparation method of the sodium alginate solution is as follows: 0.73g of sodium alginate is weighed and dissolved in 50ml of deionized water; the temperature of the water bath is adjusted to 50 degrees, the sodium alginate solution is placed in the water bath, and continuous stirring is performed to prevent the solution from sticking to the cup; after the sodium alginate is completely dissolved to form a transparent viscous solution, a glass rod is used to pick it into a filament shape.

[0031] The application further provides that in step two, glycerol is added and mixed with the buffer, and the amount of glycerol added is 100-400ul.

[0032] The sweat absorbing towel production method with temperature monitoring function has the following beneficial effects: the bromocresol green solution and the sodium alginate solution mixed liquid are used as the indicator by adding a buffer, the color of the bromocresol green solution is stable and rich, the color of the bromocresol green solution changes from green to blue after it comes into contact with water, which is an ideal color developing indicator, and the indicating effect is improved; the cotton cloth can conveniently carry the color developing indicator, the uniformity of the color development is improved, and after the sweat absorbing towel absorbs sweat, the sweat penetrates into the color developing sheet along the sweat guide strip, the color developing sheet changes color, and thus the warning effect is achieved, and the sweat absorbing towel can be conveniently and timely replaced. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1An operation flow structure schematic diagram of a sweat absorbing towel production method with temperature monitoring function is provided in the present application.

[0034] Figure 2 A non-woven fabric sweat guide strip experimental result schematic diagram of a sweat absorbing towel production method with temperature monitoring function is provided in the present application.

[0035] Figure 3 A polyester fabric sweat guide strip experimental result schematic diagram of a sweat absorbing towel production method with temperature monitoring function is provided in the present application.

[0036] Figure 4 A cotton fabric sweat guide strip experimental result schematic diagram of a sweat absorbing towel production method with temperature monitoring function is provided in the present application.

[0037] Figure 5 A glycerol adding experimental result schematic diagram of a sweat absorbing towel production method with temperature monitoring function is provided in the present application. DETAILED DESCRIPTION

[0038] The technical solution of the present patent will be further described in detail in combination with specific implementation manners.

[0039] The embodiments of the present patent will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present patent, and cannot be understood as a limitation of the present patent.

[0040] Example 1

[0041] REFERENCE Figure 1 A sweat absorbing towel production method with temperature monitoring function, comprising the following steps:

[0042] Step one: selection and design of carrier

[0043] Full cotton gauze verified by experiment is selected, the thickness of the gauze is 3-4 layers, to ensure the balance of water absorption rate and water retention rate; in order to increase the durability of the gauze, a layer of hydrophobic fiber is compounded on the outer surface of the gauze, and a sweat absorbing towel is obtained;

[0044] Step two: preparation of indicator solution

[0045] Bromocresol green solution is prepared, and the solution concentration is controlled at 0.4 mg / mL; about 40 mg of bromocresol green is weighed and dissolved in 100 ml of water; the solution pH is adjusted to 3.5 using citric acid-sodium citrate buffer, at which time the solution color changes to yellow; in order to fix bromocresol green, 100 ul of glycerol is added and stirred uniformly;

[0046] Preparation of sodium alginate solution: 0.73 g of sodium alginate was weighed and dissolved in 50 ml of deionized water; the temperature of the water bath was adjusted to 50 degrees, and the sodium alginate solution was placed in the water bath and continuously stirred to prevent the solution from sticking to the cup; after the sodium alginate was completely dissolved to form a transparent viscous solution, a glass rod was used to pick it into a filament shape;

[0047] Take 50 ml of bromocresol green solution and 50 ml of sodium alginate solution, mix them in a volume ratio of 1:1 and stir evenly to form a mixed solution, add buffer solution to adjust the pH of the mixed solution to 3.45;

[0048] Step three: immersion

[0049] The cotton cloth was completely immersed in the mixed solution and left for 15 minutes to ensure that the cotton cloth fully absorbed the mixed solution; after taking it out, the excess liquid was shaken off;

[0050] Step four: crosslinking and solidification

[0051] Prepare a CaCl2 solution with a concentration of 5% to 10%; immerse the immersed cotton cloth in the CaCl2 solution for 5 minutes, take it out and drain; rinse the surface of the cotton cloth with deionized water to remove unreacted CaCl2; place the cotton cloth in a hot air drying oven at 50°C and dry for 1 hour to form a stable gel-color composite layer, i.e. a color developing sheet is obtained;

[0052] Step five: color development effect test

[0053] After the color developing sheet is fixed, it is immersed in water and observed to change from yellow to blue; then the color developing sheet is placed in an oven and then immersed in water again, and the process is repeated several times to observe the color change; at the same time, the color developing sheet washed with laundry detergent is also observed in the same way;

[0054] Step six: installation and fixation of color developing sheet

[0055] A sweat guide strip is installed at the bottom of the color developing sheet, an embedded port is opened on the surface of the sweat absorbing pad, the sweat guide strip is inserted into the embedded port, and the color developing sheet is fixed to the anti-shedding head at the top of the sweat absorbing pad using magic tape.

[0056] The carrier needs to be tested for water absorption performance, and the test method includes the following steps: cut the test sweat absorbing pad into a square sample of 5 cm x 5 cm, weigh the mass M0 of the sample in a completely dry state; add an appropriate amount of deionized water to a glass dish, immerse the sample in water with tweezers, and simultaneously time, take it out quickly after 3 seconds; drain until there is no continuous dripping, record the mass Mt of the sample at this time; immerse the sweat pad sample in water until it is fully saturated, and record the saturated mass Mc of the sample; repeat the test on two identical samples.

[0057] The calculation formula of the water absorption rate of the sweat absorbing pad is: In the formula: a is the water absorption rate of the sweatband sample; M0 is the mass of the sweatband when it is completely dry; Mt is the mass of the sweatband at time t; t is the water absorption time; the greater the water absorption rate a, the faster the water absorption speed; the water absorption rate of the sweatband is calculated by the formula: In the formula: β is the water absorption rate of the sweatband sample; M0 is the mass of the sweatband when it is completely dry; Mh is the mass of the sweatband sample when it is saturated with water; the water absorption rate β reflects the amount of water absorbed by the sweatband per unit mass, and the higher the value, the better the water absorption performance.

[0058] The carrier needs to be tested for water retention performance, and the test method includes the following steps: taking a 5cm x 5cm sweatband sample and completely immersing it in water, removing part of the water by applying a weight, weighing the wet weight of the dehydrated sweatband, denoted as Mc; investigating the percentage of the mass of the water involved in the sweatband sample, i.e. the water retention rate; the water retention rate is calculated by the formula: In the formula, γ is the water retention rate of the sweatband sample; M0 is the mass of the sweatband when it is completely dry; Mc is the mass of the sweatband sample when it is saturated with water.

[0059] Sweat guiding test

[0060] According to the design drawing, the product is designed, placed horizontally, and immersed in water. After standing, observe the capillary phenomenon, i.e. whether the color of the color developing sheet fixed along the sweat guiding strip changes, and record the observation results.

[0061] Reference Figure 2 According to the experimental results, it is found that the non-woven fabric material used for the sweat guiding strip material has poor effect, and the indicator carrier color developing sheet is too thick and has a layer of glue, resulting in poor color change effect; therefore, the material is further improved.

[0062] Reference Figure 3 and Figure 4 On the basis of the above experiments, the coloring and color changing ability of cotton cloth, non-woven fabric and polyester cloth are compared, and the results show that the effect of polyester cloth is the best. Based on the above experiments, the indicator carrier is finally determined to be polyester cloth.

[0063] Example 2

[0064] This example 2 is completed on the basis of example 1, and is more specific, as shown in Figure 5 The glycerol is added in an amount of 100-400μL; the use of buffer mixed with bromocresol green and glycerol for soaking can obtain the most significant color developing effect; the amount of glycerol incorporated is not the more the better, and the incorporation of 200μL of glycerol is the most obvious in color change.

[0065] The above merely describes preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art, according to the technical solution and inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A method for producing a sweat absorbing towel having a temperature monitoring function, characterized by, The method comprises the following steps: Step 1: selection and design of the carrier The full cotton gauze verified by experiments is selected, and the thickness of the gauze is 3-4 layers to ensure the balance of water absorption rate and water retention rate; in order to increase the durability of the gauze, a layer of hydrophobic fiber is compounded on the outer surface of the gauze, so that the sweat absorption towel is obtained; Step 2: preparation of the indicator solution The bromocresol green solution is prepared, and the concentration of the solution is controlled at 0.4 mg / mL; the sodium alginate solution is prepared, and 50 ml of the bromocresol green solution and the sodium alginate solution are mixed in a volume ratio of 1:1 and stirred uniformly to form a mixed solution; the buffer solution is added to adjust the pH of the mixed solution to 3.45; Step 3: immersion The cotton cloth is completely immersed in the mixed solution, and is left to stand for 15 minutes to ensure that the cotton cloth fully absorbs the mixed solution; after being taken out, the excess liquid is shaken off; Step 4: cross-linking and solidification The CaCl2 solution with a concentration of 5%-10% is prepared; the immersed cotton cloth is immersed in the CaCl2 solution for 5 minutes, and is taken out and drained; the surface of the cotton cloth is washed with deionized water to remove the unreacted CaCl2; the cotton cloth is placed in a hot air drying oven at 50°C for drying for 1 hour to form a stable gel-color composite layer, so that the color developing sheet is obtained; Step 5: test of color developing effect After the color developing sheet is fixed, it is immersed in water, and it is observed that the color developing sheet changes from yellow to blue; the color developing sheet is placed in an oven, and then is immersed in water again, and the process is repeated for multiple times, and the color change is observed; at the same time, the color developing sheet after being washed with laundry detergent is also observed in the same way; Step 6: installation and fixation of the color developing sheet The sweat guide strip is installed at the bottom of the color developing sheet, the surface of the sweat absorption towel is provided with an embedded opening, the sweat guide strip is inserted into the embedded opening, and the color developing sheet is fixed to the anti-falling head at the top of the sweat absorption towel by using the magic tape.

2. The sweat absorbing towel production method with temperature monitoring function according to claim 1, characterized in that, The carrier needs to be tested for water absorption performance, and the test method comprises the following steps: The sweat absorption towel is cut into a square sample with a size of 5 cm*5 cm, and the mass of the sample in a completely dry state is weighed as M0; A glass dish is taken, and an appropriate amount of deionized water is added; the sample is immersed in the water with a pair of tweezers, and the time is counted synchronously; the sample is taken out quickly after 3 seconds of absorption; the sample is drained until no continuous dripping is observed, and the mass of the sample at this time is recorded as Mt; The sweat towel sample is completely immersed in water to make it saturated with water, and the saturated mass of the sample is recorded as Mc; two identical samples are tested repeatedly.

3. The sweat absorbing pad production method having a temperature monitoring function according to claim 2, wherein The formula for calculating the water absorption rate of the sweat absorbing towel is: In the formula, a is the water absorption rate of the sweat absorbing towel sample; M0 is the mass of the sweat absorbing towel when it is completely dry; Mt is the mass of the sweat absorbing towel when it absorbs water for t time; t is the water absorption time; the greater the water absorption rate a is, the faster the water absorption speed is.

4. The sweat absorbing pad production method having a temperature monitoring function according to claim 3, characterized by, The water absorption ratio of the sweat absorbing towel is calculated by the following formula: In the formula, β is the water absorption ratio of the sweat absorbing towel sample; M0 is the mass of the sweat absorbing towel when it is completely dry; and Mh is the mass of the sweat absorbing towel sample when it is saturated with water. The water absorption ratio β reflects how much water is absorbed by a unit mass of the sweat absorbing towel, and the higher the value, the better the water absorption performance.

5. The sweat absorbing pad production method having a temperature monitoring function according to claim 1, wherein The carrier needs to be tested for water retention performance, and the test method comprises the following steps: The 5 cm*5 cm sweat towel sample is completely immersed in water, and a weight is applied to remove part of the water, and the wet weight of the dehydrated sweat towel is weighed and recorded as Mc; The mass of the water involved is investigated as a percentage of the mass of the sweat towel sample, that is, the water retention rate.

6. The sweat absorbing pad production method having a temperature monitoring function according to claim 5, wherein The water retention rate calculation formula is: In the formula, γ is the water retention rate of the sweatband sample; M0 is the mass when the sweatband is completely dried; and Mc is the mass when the sweatband sample is saturated with water.

7. The sweat absorbing pad production method having a temperature monitoring function according to claim 1, wherein The preparation method of the bromocresol green solution is as follows: about 40 mg of bromocresol green is weighed and dissolved in 100 ml of water; the pH of the solution is adjusted to 3.5 by using a citric acid-sodium citrate buffer, and at this time the color of the solution changes to yellow; in order to fix the bromocresol green, 100 ul of glycerol is added and stirred uniformly.

8. The sweat absorbing pad production method having a temperature monitoring function according to claim 7, wherein The preparation method of the sodium alginate solution is as follows: 0.73 g of sodium alginate is weighed and dissolved in 50 ml of deionized water; the temperature of the water bath is adjusted to 50 DEG C, the sodium alginate solution is placed in the water bath, and continuous stirring is carried out to prevent the solution from adhering to the cup; after the sodium alginate is completely dissolved to form a transparent viscous solution, a glass rod is used to pick up the solution into a filament shape.

9. The sweat absorbing pad production method having a temperature monitoring function according to claim 1, wherein, In the step two, the glycerol is mixed with the buffer solution, and the addition amount of the glycerol is 100-400 μL.

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