A tampon using jelly wrapped cloth and preparation method thereof

Abstract

The present invention discloses a tampon using jelly wrapping cloth and a preparation method thereof, the preparation method comprising the following steps: S1, preparing modified fiber; S2, mixing cotton fiber with modified fiber, combing, paving into a single layer of cotton fiber, then stacking the single layer of cotton fiber, shaping and cutting to obtain a cotton fiber layer; S3, wrapping the cotton fiber layer with jelly wrapping cloth, pressing to obtain a strip fiber layer, then fixing cotton thread to the center of the strip fiber layer, the tail end of the cotton thread is exposed 10 to 20 cm outside the strip fiber layer, and obtaining a strip fiber layer with cotton thread; S4, curling the strip fiber layer with cotton thread to form a long cylindrical absorbent, pressing and forming in a former, and then performing microwave heating treatment to obtain a tampon body; S5, loading the tampon body into a catheter, and obtaining a tampon using jelly wrapping cloth. When the tampon prepared by the present invention is soaked, the surface has a jelly-like gel film, which is easy to take out.

Description

Technical Field

[0001] The invention relates to the technical field of sanitary products, and in particular to a tampon using a jelly-wrapped cloth and a preparation method thereof. Background Art

[0002] The tampon market has experienced rapid growth in the past few decades and has become an important part of the global female physiological products market. According to statistics, the global tampon market is expected to continue to grow steadily in the next few years. This growth trend is not only due to the increasing attention paid by women to physiological health, but also driven by changes in the social environment. As consumers' requirements for tampons continue to increase, product design and materials have received unprecedented attention. Modern tampons not only focus on their basic function - effectively absorbing fluids during menstruation, but also pay more attention to the user's comfort experience and safety.

[0003] However, existing tampons swell when absorbing menstrual blood and fit tightly against the vaginal wall, making it easy to feel uncomfortable when removing them. Therefore, how to prepare a tampon that is easy to remove is a current key research issue. Summary of the invention

[0004] The main purpose of the present invention is to provide a tampon using a jelly-wrapped cloth and a preparation method thereof, aiming to provide a tampon which has a jelly-like hydrogel film on its surface in a soaked state so as to be easy to take out.

[0005] To achieve the above object, the present invention provides a method for preparing a tampon using a jelly wrapping cloth, comprising the following steps:

[0006] S1. Add sodium hydroxide solution to a beaker containing viscose fiber, heat up, stir, and stand for reaction for a period of time, then add chloroacetic acid and isopropanol, heat and react to obtain preliminary modified viscose fiber; then add the preliminary modified viscose fiber to the silk fibroin solution, add N-hydroxysuccinimide and 1-ethyl-(3-dimethylaminopropyl)carbodiimide, add acetic acid to adjust the pH to 5-6, stir and react, wash with deionized water after the reaction, and dry to obtain modified fiber;

[0007] S2, mixing the cotton fiber and the modified fiber, and then combing them, and after combing, laying them into a single layer of cotton fiber, and then stacking, shaping and cutting the single layer of cotton fiber to obtain a cotton fiber layer;

[0008] S3, wrapping the cotton fiber layer with a jelly wrapping cloth, pressing to obtain a strip fiber layer, and then fixing a cotton thread to the center of the strip fiber layer, with the tail end of the cotton thread exposed 10 to 20 cm outside the strip fiber layer, to obtain a strip fiber layer with cotton thread;

[0009] S4, curling the strip-shaped fiber layer with cotton thread to form a long cylindrical absorbent body, pressing and molding in a former, and then performing microwave heating treatment to obtain a tampon body;

[0010] S5. Insert the tampon body of the tampon into the catheter to obtain the tampon wrapped with jelly cloth.

[0011] Preferably, in step S3, the method for preparing the jelly wrapping cloth comprises the following steps:

[0012] S31, using graphite powder as a raw material, preparing graphene oxide powder by Hummers method;

[0013] S32, dispersing the graphene oxide powder in deionized water, adding acetic acid solution, stirring thoroughly and then ultrasonically treating to obtain a graphene oxide solution;

[0014] S33, adding chitosan powder to the graphene oxide solution, stirring until completely dissolved, and ultrasonically treating to obtain a mixed solution;

[0015] S34, immersing the non-woven fabric in the mixed solution, then adding potassium persulfate and N,N'-methylenebisacrylamide, reacting for a period of time to obtain a non-woven fabric with a gel film, and drying to obtain a jelly wrapping cloth.

[0016] Preferably, in step S32, the ultrasonic treatment time is 25 to 45 minutes;

[0017] In steps S33 and S34, the usage ratio of the graphene oxide, chitosan powder, potassium persulfate and N,N'-methylenebisacrylamide is (1-5 mg): (2-8 g): (1-3 mL): (0.1-0.3 g).

[0018] Preferably, in step S1, the mass fraction of the sodium hydroxide solution is 18-22%; and the heating temperature is 40-50°C.

[0019] Preferably, in step S1, the static reaction time is 50 to 100 minutes; and the heating reaction temperature is 60 to 80°C.

[0020] Preferably, in step S1, the mass ratio of the chloroacetic acid to the viscose fiber is (1-2):1; and the concentration of the silk fibroin solution is 10-20 mg / mL.

[0021] Preferably, in step S2, the mass ratio of the cotton fiber to the modified fiber is (50-75):(20-40).

[0022] Preferably, in step S2, the weight of the cotton fiber layer is 200 to 900 g / m2 .

[0023] Preferably, in step S4, the temperature of the microwave heating is 50-65° C., and the time of the microwave heating is 2-8 s.

[0024] The present invention also provides a tampon prepared by the method as described above and using a jelly wrapping cloth.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] (1) In the technical solution provided by the present invention, the viscose fiber is first activated and reacted with chloroacetic acid to undergo a substitution reaction for preliminary modification, and then the silk fibroin is grafted onto the preliminary modified viscose fiber to obtain a modified fiber with stronger water absorption; the modified fiber is then mixed with cotton fiber, combed, stacked, superimposed, shaped and cut, and then wrapped with a jelly wrapping cloth, and then the cotton thread is fixed, curled, pressed, and tubed to obtain a tampon using the jelly wrapping cloth. Since the surface of the jelly wrapping cloth is grafted with graphene oxide containing a large number of active groups such as hydroxyl groups, hydrogen bonds are formed with the silk fibroin on the viscose fiber, thereby improving the overall stability of the tampon, and a jelly-like film is formed on the surface of the tampon when it is soaked, which greatly reduces the friction between the tampon and the vaginal wall, thereby facilitating removal.

[0027] (2) The present invention provides a method for preparing a tampon using a jelly-wrapped cloth. The jelly-wrapped cloth uses a non-woven fabric as a substrate, and cross-links chitosan and graphene oxide to form a hydrogel film. Since the surface or edge of the graphene oxide structure contains a large number of hydrophilic oxygen-containing groups, it can form a strong hydrogen bond with the polymer in the hydrogel system. When it is soaked, external water molecules continuously diffuse into the hydrogel network, causing the network to continuously stretch, and the hydrogen bonds are destroyed and replaced by water, thereby forming a hydrogel film with a porous structure. The porous structure can promote the absorption of more liquid into the cotton fiber layer of the inner layer of the tampon, thereby improving the hygroscopicity, lubricity and antibacterial properties of the tampon. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 The present invention provides a flow chart of the method for preparing a tampon using a jelly wrapping cloth.

[0030] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0031] To make the purpose, technical scheme and advantages of the embodiment of the present invention clearer, the technical scheme in the embodiment of the present invention will be clearly and completely described below. If the specific conditions are not specified in the embodiment, it is carried out according to the normal conditions or the conditions recommended by the manufacturer. If the manufacturer is not specified in the reagents or instruments used, they are all conventional products that can be purchased commercially. In addition, the technical schemes between the various embodiments can be combined with each other, but must be based on the ability of ordinary technicians in the field to achieve. When the combination of technical solutions is contradictory or cannot be achieved, it should be considered that the combination of such technical solutions does not exist, and is not within the scope of protection required by the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present invention.

[0032] The technical solution of the present invention is further described in detail below in conjunction with specific embodiments and drawings. It should be understood that the following embodiments are only used to explain the present invention and are not used to limit the present invention.

[0033] Example 1

[0034] A method for preparing a tampon using a jelly wrapping cloth comprises the following steps:

[0035] (1) Add 10 mL of 20% sodium hydroxide solution to a beaker containing 25 g of viscose fiber, heat to 45° C., stir, and stand for reaction for 75 minutes, then add 40 g of chloroacetic acid and isopropanol, heat to 70° C. to react, and obtain a preliminary modified viscose fiber; then add the preliminary modified viscose fiber to a 15 mg / mL silk fibroin solution, add 2 g of N-hydroxysuccinimide and 2 g of 1-ethyl-(3-dimethylaminopropyl)carbodiimide, add acetic acid to adjust the pH to 5.5, stir to react, wash with deionized water after the reaction, and dry to obtain a modified fiber;

[0036] (2) 55 g of cotton fiber and 25 g of modified fiber are mixed, and then combed, and after combing, they are laid into a single layer of cotton fiber, and then the single layer of cotton fiber is stacked, shaped and cut to obtain a cotton fiber layer;

[0037] (3) wrapping the cotton fiber layer with a jelly wrapping cloth and pressing to obtain a strip fiber layer, and then fixing a cotton thread to the center of the strip fiber layer, with the tail end of the cotton thread exposed 15 cm outside the strip fiber layer, to obtain a strip fiber layer with cotton thread;

[0038] (4) curling the strip-shaped fiber layer with cotton thread to form a long cylindrical absorbent body, pressing and molding in a former, and then subjecting the resultant to microwave heating at 60° C. for 6 seconds to obtain a tampon body;

[0039] (5) inserting the tampon body of the tampon into the catheter, thereby obtaining a tampon wrapped in jelly cloth;

[0040] The preparation method of the jelly wrapping cloth comprises the following steps:

[0041] Graphite powder was used as a raw material and graphene oxide powder was prepared by the Hummers method; 3 mg of graphene oxide powder was dispersed in 5 mL of deionized water, and 20 mL of 10% acetic acid solution was added, and the mixture was fully stirred and ultrasonically treated to obtain a graphene oxide solution; 5 g of chitosan powder was added to the graphene oxide solution, stirred until completely dissolved, and ultrasonically treated to obtain a mixed solution; 20 g of non-woven fabric was immersed in the mixed solution, and then 2 mL of potassium persulfate and 0.2 mg of N, N'-methylenebisacrylamide were added, and the mixture was reacted for 180 minutes to obtain a non-woven fabric with a gel film, which was then dried to obtain a jelly wrapping cloth.

[0042] Example 2

[0043] A method for preparing a tampon using a jelly wrapping cloth comprises the following steps:

[0044] (1) Add 10 mL of a 20% sodium hydroxide solution to a beaker containing 40 g of viscose fiber, heat to 40° C., stir, and allow to react for 70 min, then add 40 g of chloroacetic acid and isopropanol, heat to 70° C. to react, and obtain a preliminary modified viscose fiber; then add the preliminary modified viscose fiber to a 15 mg / mL silk fibroin solution, add 2 g of N-hydroxysuccinimide and 2 g of 1-ethyl-(3-dimethylaminopropyl)carbodiimide, add acetic acid to adjust the pH to 5, stir to react, wash with deionized water after the reaction, and dry to obtain a modified fiber;

[0045] (2) 75 g of cotton fiber and 40 g of modified fiber are mixed, and then combed, and after combing, they are laid into a single layer of cotton fiber, and then the single layer of cotton fiber is stacked, shaped and cut to obtain a cotton fiber layer;

[0046] (3) wrapping the cotton fiber layer with a jelly wrapping cloth and pressing it to obtain a strip fiber layer, and then fixing a cotton thread to the center of the strip fiber layer, with the tail end of the cotton thread exposed 10 cm outside the strip fiber layer, to obtain a strip fiber layer with cotton thread;

[0047] (4) curling the strip-shaped fiber layer with cotton thread to form a long cylindrical absorbent body, pressing and molding in a former, and then subjecting the resultant to microwave heating at 50° C. for 6 seconds to obtain a tampon body;

[0048] (5) inserting the tampon body of the tampon into the catheter, thereby obtaining a tampon wrapped in jelly cloth;

[0049] The preparation method of the jelly wrapping cloth comprises the following steps:

[0050] Graphite powder was used as a raw material and graphene oxide powder was prepared by the Hummers method; 1 mg of graphene oxide powder was dispersed in 2 mL of deionized water, and 10 mL of acetic acid solution with a mass fraction of 10% was added, and the mixture was fully stirred and ultrasonically treated to obtain a graphene oxide solution; 2 g of chitosan powder was added to the graphene oxide solution, stirred until completely dissolved, and ultrasonically treated to obtain a mixed solution; 20 g of non-woven fabric was immersed in the mixed solution, and then 1 mL of potassium persulfate and 0.1 mg of N,N'-methylenebisacrylamide were added, and the mixture was reacted for 160 minutes to obtain a non-woven fabric with a gel film, which was then dried to obtain a jelly wrapping cloth.

[0051] Example 3

[0052] A method for preparing a tampon using a jelly wrapping cloth comprises the following steps:

[0053] (1) Add 10 mL of a 20% sodium hydroxide solution to a beaker containing 20 g of viscose fiber, heat to 50° C., stir, and stand for reaction for 80 min, then add 20 g of chloroacetic acid and isopropanol, heat to 70° C. to react, and obtain a preliminary modified viscose fiber; then add the preliminary modified viscose fiber to a 15 mg / mL silk fibroin solution, add 2 g of N-hydroxysuccinimide and 2 g of 1-ethyl-(3-dimethylaminopropyl)carbodiimide, add acetic acid to adjust the pH to 6, stir to react, wash with deionized water after the reaction, and dry to obtain a modified fiber;

[0054] (2) 50 g of cotton fiber and 20 g of modified fiber are mixed, and then combed, and after combing, they are laid into a single layer of cotton fiber, and then the single layer of cotton fiber is stacked, shaped and cut to obtain a cotton fiber layer;

[0055] (3) wrapping the cotton fiber layer with a jelly wrapping cloth and pressing to obtain a strip fiber layer, and then fixing a cotton thread to the center of the strip fiber layer, with the tail end of the cotton thread exposed 20 cm outside the strip fiber layer, to obtain a strip fiber layer with cotton thread;

[0056] (4) curling the strip-shaped fiber layer with cotton thread to form a long cylindrical absorbent body, pressing and molding in a former, and then subjecting the resultant to microwave heating at 65° C. for 3 seconds to obtain a tampon body;

[0057] (5) inserting the tampon body of the tampon into the catheter, thereby obtaining a tampon wrapped in jelly cloth;

[0058] The preparation method of the jelly wrapping cloth comprises the following steps:

[0059] Graphite powder was used as a raw material and graphene oxide powder was prepared by the Hummers method; 5 mg of graphene oxide powder was dispersed in 10 mL of deionized water, and 50 mL of acetic acid solution with a mass fraction of 10% was added, and the mixture was fully stirred and ultrasonically treated to obtain a graphene oxide solution; 8 g of chitosan powder was added to the graphene oxide solution, stirred until completely dissolved, and ultrasonically treated to obtain a mixed solution; 20 g of non-woven fabric was immersed in the mixed solution, and then 3 mL of potassium persulfate and 0.3 mg of N, N'-methylenebisacrylamide were added, and the reaction was carried out for 200 minutes to obtain a non-woven fabric with a gel film, which was dried to obtain a jelly wrapping cloth.

[0060] Comparative Example 1

[0061] A method for preparing a tampon comprises the following steps:

[0062] (1) 55 g of cotton fiber and 25 g of viscose fiber are mixed and then combed, and after the combing is completed, they are laid into a single layer of cotton fiber, and then the single layer of cotton fiber is stacked, shaped and cut to obtain a cotton fiber layer;

[0063] (2) wrapping the cotton fiber layer with a jelly wrapping cloth and pressing to obtain a strip fiber layer, and then fixing a cotton thread to the center of the strip fiber layer, with the tail end of the cotton thread exposed 15 cm outside the strip fiber layer, to obtain a strip fiber layer with cotton thread;

[0064] (3) curling the strip-shaped fiber layer with cotton thread to form a long cylindrical absorbent body, pressing and molding in a former, and then subjecting the resultant to microwave heating at 60° C. for 6 seconds to obtain a tampon body;

[0065] (4) inserting the tampon body of the tampon into a catheter to obtain a tampon;

[0066] The preparation method of the jelly wrapping cloth comprises the following steps:

[0067] Graphite powder was used as a raw material and graphene oxide powder was prepared by the Hummers method; 3 mg of graphene oxide powder was dispersed in 5 mL of deionized water, and 20 mL of 10% acetic acid solution was added, and the mixture was fully stirred and ultrasonically treated to obtain a graphene oxide solution; 5 g of chitosan powder was added to the graphene oxide solution, stirred until completely dissolved, and ultrasonically treated to obtain a mixed solution; 20 g of non-woven fabric was immersed in the mixed solution, and then 2 mL of potassium persulfate and 0.2 mg of N, N'-methylenebisacrylamide were added, and the mixture was reacted for 180 minutes to obtain a non-woven fabric with a gel film, which was then dried to obtain a jelly wrapping cloth.

[0068] Comparative Example 2

[0069] A method for preparing a tampon comprises the following steps:

[0070] (1) Add 10 mL of 20% sodium hydroxide solution to a beaker containing 25 g of viscose fiber, heat to 45° C., stir, and stand for reaction for 75 minutes, then add 40 g of chloroacetic acid and isopropanol, heat to 70° C. to react, and obtain a preliminary modified viscose fiber; then add the preliminary modified viscose fiber to a 15 mg / mL silk fibroin solution, add 2 g of N-hydroxysuccinimide and 2 g of 1-ethyl-(3-dimethylaminopropyl)carbodiimide, add acetic acid to adjust the pH to 5.5, stir to react, wash with deionized water after the reaction, and dry to obtain a modified fiber;

[0071] (2) 55 g of cotton fiber and 25 g of modified fiber are mixed, and then combed, and after combing, they are laid into a single layer of cotton fiber, and then the single layer of cotton fiber is stacked, shaped and cut to obtain a cotton fiber layer;

[0072] (3) wrapping the cotton fiber layer with a non-woven fabric and pressing it to obtain a strip fiber layer, and then fixing a cotton thread to the center of the strip fiber layer, with the tail end of the cotton thread exposed 15 cm outside the strip fiber layer, to obtain a strip fiber layer with cotton thread;

[0073] (4) curling the strip-shaped fiber layer with cotton thread to form a long cylindrical absorbent body, pressing and molding in a former, and then subjecting the resultant to microwave heating at 60° C. for 6 seconds to obtain a tampon body;

[0074] (5) The tampon body of the tampon is placed into a catheter to obtain the tampon.

[0075] Test methods and results

[0076] The tampons prepared in Examples 1 to 3 and Comparative Examples 1 to 2 were randomly selected, with 20 tampons in each group. The push-out force of any 10 tampons after preparation was tested, and the average push-out force was calculated. The average push-out force of the other 10 tampons was tested after soaking, and the absorption amount was tested. The test results are shown in Table 1 below.

[0077] Table 1 Statistical results of the push-out force and absorption of tampons

[0078]

[0079] It can be seen from Table 1 above that the push-out force of the tampons prepared in Examples 1 to 3 of the present invention is greatly reduced after being soaked, and the push-out force of the tampons prepared in Comparative Examples 1 to 2 is slightly reduced after being soaked, indicating that a jelly-like film is formed on the surface of the tampons prepared in the present invention after being soaked, which greatly reduces the push-out force; the tampons prepared in the present invention also have a higher absorption capacity.

[0080] The above are only preferred embodiments of the present invention, and do not limit the patent scope of the present invention. For those skilled in the art, the present invention may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the patent protection scope of the present invention.

Claims

1. A method for preparing a tampon using a jelly wrapped cloth, characterized in that: The following steps are involved: S1. Add sodium hydroxide solution to a beaker containing viscose fiber, heat up, stir, and stand for reaction for a period of time, then add chloroacetic acid and isopropanol, heat and react to obtain preliminary modified viscose fiber; then add the preliminary modified viscose fiber to the silk fibroin solution, add N-hydroxysuccinimide and 1-ethyl-(3-dimethylaminopropyl)carbodiimide, add acetic acid to adjust the pH to 5-6, stir and react, wash with deionized water after the reaction, and dry to obtain modified fiber; S2, mixing the cotton fiber and the modified fiber, and then combing them, and after combing, laying them into a single layer of cotton fiber, and then stacking, shaping and cutting the single layer of cotton fiber to obtain a cotton fiber layer; S3, wrapping the cotton fiber layer with a jelly wrapping cloth, pressing to obtain a strip fiber layer, and then fixing a cotton thread to the center of the strip fiber layer, with the tail end of the cotton thread exposed 10 to 20 cm outside the strip fiber layer, to obtain a strip fiber layer with cotton thread; S4, curling the strip-shaped fiber layer with cotton thread to form a long cylindrical absorbent body, pressing and molding in a former, and then performing microwave heating treatment to obtain a tampon body; S5. Insert the tampon body of the tampon into the catheter to obtain the tampon wrapped with jelly cloth.

2. The method for preparing a tampon using a jelly wrapping cloth according to claim 1, characterized in that: In step S3, the method for preparing the jelly wrapping cloth comprises the following steps: S31, using graphite powder as a raw material, preparing graphene oxide powder by Hummers method; S32, dispersing the graphene oxide powder in deionized water, adding acetic acid solution, stirring thoroughly and then ultrasonically treating to obtain a graphene oxide solution; S33, adding chitosan powder to the graphene oxide solution, stirring until completely dissolved, and ultrasonically treating to obtain a mixed solution; S34, immersing the non-woven fabric in the mixed solution, then adding potassium persulfate and N,N'-methylenebisacrylamide, reacting for a period of time to obtain a non-woven fabric with a gel film, and drying to obtain a jelly wrapping cloth.

3. The method for preparing a tampon using a jelly wrapping cloth according to claim 2, characterized in that: In step S32, the ultrasonic treatment time is 25 to 45 minutes; In steps S33 and S34, the amount ratio of graphene oxide powder, chitin powder, potassium persulfate and N,N'-methylenebisacrylamide added to the graphene oxide solution is (1-5 mg): (2-8 g): (1-3 mL): (0.1-0.3 g).

4. The method for preparing a tampon using a jelly wrapping cloth according to claim 1, characterized in that: In step S1, the mass fraction of the sodium hydroxide solution is 18-22%; the temperature is raised to 40-50°C.

5. The method for preparing a tampon using a jelly wrapping cloth according to claim 1, characterized in that: In step S1, the static reaction time is 50 to 100 minutes; the heating reaction temperature is 60 to 80°C.

6. The method for preparing a tampon using a jelly wrapping cloth according to claim 1, characterized in that: In step S1, the mass ratio of the chloroacetic acid to the viscose fiber is (1-2):1; the concentration of the silk fibroin solution is 10-20 mg / mL.

7. The method for preparing a tampon using a jelly wrapping cloth according to claim 1, characterized in that: In step S2, the mass ratio of the cotton fiber to the modified fiber is (50-75):(20-40).

8. The method for preparing a tampon using a jelly wrapping cloth according to claim 1, characterized in that: In step S2, the weight of the cotton fiber layer is 200 to 900 g / m 2 .

9. The method for preparing a tampon using a jelly wrapping cloth according to claim 1, characterized in that: In step S4, the temperature of the microwave heating is 50-65° C., and the time of the microwave heating is 2-8 s.

10. A tampon using a jelly wrap prepared according to the method of any one of claims 1 to 9.

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