Tampon easy to take out and preparation method thereof

Abstract

The invention discloses a tampon easy to take out and a preparation method of the tampon. The preparation method of the tampon comprises the following steps that S1, cotton fibers and modified fibers are mixed and then carded, the cotton fibers and the modified fibers are laid into single-layer cotton fibers after being carded, and then the single-layer cotton fibers are stacked, shaped and cut to obtain a cotton fiber layer; s2, the cotton fiber layer is wrapped with modified non-woven fabric and pressed to obtain a strip-shaped fiber layer, then cotton threads are fixed to the center of the strip-shaped fiber layer, the tail ends of the cotton threads are exposed out of the strip-shaped fiber layer by 10-20 cm, and the strip-shaped fiber layer with the cotton threads is obtained; s3, the strip-shaped fiber layer with the cotton threads is curled to form a strip-shaped cylindrical absorber, microwave heating treatment is conducted after pressing forming is conducted in a forming device, and a tampon body of the tampon is obtained; and S4, the tampon body of the tampon is put into a guide pipe, and the tampon easy to take out is obtained. The surface of the tampon provided by the invention becomes hydrogel under the condition of moisture absorption, and the tampon can be easily taken out.

Description

Technical Field

[0001] The invention relates to the technical field of sanitary products, and in particular to an easy-to-remove tampon and a preparation method thereof. Background Art

[0002] The origin of tampons can be traced back to the early 20th century, when women had limited options for menstrual hygiene products, usually using cloth, cotton or other materials to deal with menstrual problems. In the early 1900s, as women's consciousness awakened and their attention to hygiene and health, more modern menstrual products began to appear on the market. In 1919, American nurse Arthur H. McGowan invented one of the earliest tampons. This product uses a long strip of cotton material that can be inserted through the vagina to provide women with better comfort and concealment.

[0003] The material of tampons is mainly made of cotton, synthetic fiber or a mixture of these two materials. The diameter ranges from 1 cm to 1.9 cm, and a cotton thread (drawstring) is attached to the tail end. The arc degree of the tip of the tampon varies from brand to brand, so that users can choose according to their own usage habits. As a convenient and comfortable sanitary product for women during menstruation, tampons have become an indispensable part of the current market after a hundred years of development. Tampons not only improve the quality of life of women during menstruation, but also to a certain extent promote the improvement of public health awareness and the society's attention to women's health issues.

[0004] However, existing tampons swell when absorbing menstrual blood and adhere tightly to the vaginal wall, causing discomfort when taking them out. Therefore, how to prepare a tampon that is easy to take out is an urgent problem to be solved. Summary of the invention

[0005] The main purpose of the present invention is to provide a tampon that is easy to remove and a preparation method thereof, aiming to solve the problem that the existing tampon rubs against the vaginal wall when being removed, causing discomfort to the user.

[0006] To achieve the above object, the present invention provides a method for preparing a tampon that is easy to remove, comprising the following steps:

[0007] S1, mixing cotton fibers and modified fibers, and then combing them, laying them into a single layer of cotton fibers after combing, and then stacking, shaping and cutting the single layer of cotton fibers to obtain a cotton fiber layer;

[0008] S2, wrapping the cotton fiber layer with a modified non-woven fabric, 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 10-20 cm outside the strip fiber layer, to obtain a strip fiber layer with cotton thread;

[0009] S3, 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] S4. The tampon body of the tampon is placed into a catheter to obtain a tampon that is easy to remove.

[0011] Preferably, in step S1, the method for preparing the modified fiber comprises the following steps:

[0012] 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 a 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.

[0013] Preferably, the mass fraction of the sodium hydroxide solution is 18-22%; the heating temperature is 40-50°C; the static reaction time is 50-100 min; the heating reaction temperature is 60-80°C; the mass ratio of chloroacetic acid to viscose fiber is (1-2):1; and the concentration of the silk fibroin solution is 10-20 mg / mL.

[0014] Preferably, in step S2, the method for preparing the modified nonwoven fabric comprises the following steps:

[0015] The chitosan is dissolved in an acetic acid solution, heated in a water bath, and stirred until completely dissolved to obtain a chitosan solution, and then N, N-methylenebisacrylamide is added, ultrasonically dispersed, and then polyaspartic acid, ammonium persulfate and tetramethylethylenediamine are added, stirred for reaction, and a hydrogel is obtained. The hydrogel is impregnated into a non-woven fabric, and then dried to obtain a modified non-woven fabric.

[0016] Preferably, the mass ratio of chitosan, polyaspartic acid and N,N-methylenebisacrylamide is (10-30):(20-40):(1-2).

[0017] Preferably, the water bath heating temperature is 45-55°C.

[0018] Preferably, in step S1, the mass ratio of the cotton fiber to the modified fiber is (50-75):(20-40).

[0019] Preferably, in step S1, the weight of the cotton fiber layer is 200 to 900 g / m 2 .

[0020] 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.

[0021] The present invention also provides a tampon which is easy to take out and is prepared by the method as described above.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] (1) The method for preparing an easily removable tampon provided by the present invention comprises the following steps: firstly modifying viscose fiber to enhance its hygroscopicity, then blending, combing, stacking, shaping and cutting the viscose fiber with cotton fiber to obtain a cotton fiber layer, then wrapping and pressing the modified non-woven fabric, fixing the cotton thread, curling the non-woven fabric, and inserting the non-woven fabric into a catheter to obtain an easily removable tampon; since the modified non-woven fabric forms a hydrogel-like film on its outer surface when it is wet, the tampon is easy to remove after use.

[0024] (2) The present invention provides a method for preparing an easily removable tampon, which comprises first activating the viscose fiber with alkaline, then using chloroacetic acid as a modifier to perform carboxymethyl modification on the alkaline-activated viscose fiber, and then reacting the carboxymethyl-modified viscose fiber with silk fibroin to graft the protein onto the viscose fiber. Since silk fibroin is a natural high molecular weight protein, it has better skin affinity and hygroscopicity, thereby giving the tampon a better texture.

[0025] (3) The present invention provides a method for preparing an easily removable tampon. The modified non-woven fabric adopts chitosan hydrogel cross-linked polyaspartic acid, so that the modified non-woven fabric has both bactericidal and immune activities and strong water absorption properties, and has good adhesion properties with the protein grafted on the viscose fiber, thereby maintaining the overall stability of the tampon. At the same time, it becomes a hydrogel when absorbing moisture, greatly reducing the friction with the vaginal wall, so that the tampon can be easily removed. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] 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.

[0027] Figure 1 The present invention provides a flow chart of a method for preparing an easily removable tampon.

[0028] 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

[0029] 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.

[0030] 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.

[0031] Example 1

[0032] A method for preparing an easily removable tampon comprises the following steps:

[0033] (1) 60 g of cotton fiber and 30 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;

[0034] (2) wrapping the cotton fiber layer with a modified non-woven fabric, 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;

[0035] (3) curling the strip fiber layer with cotton thread to form a long cylindrical absorbent body, pressing and molding in a former, and then subjecting the mold to microwave heating at 60° C. for 5 seconds to obtain a tampon body;

[0036] (4) inserting the tampon body of the tampon into the catheter to obtain a tampon that is easy to remove;

[0037] The preparation method of the modified fiber comprises the following steps:

[0038] Add 10 mL of 20% sodium hydroxide solution to a beaker containing 30 g of viscose fiber, heat to 45° C., stir, and stand for reaction for 75 minutes, then add 45 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 3 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;

[0039] The preparation method of the modified nonwoven fabric comprises the following steps:

[0040] 2 g of chitosan was dissolved in an acetic acid solution with a mass fraction of 10%, heated to 50°C in a water bath, and stirred until completely dissolved to obtain a chitosan solution. Then, 0.15 g of N, N-methylenebisacrylamide was added, and ultrasonic dispersion was performed. Then, 3 g of polyaspartic acid, 0.1 g of ammonium persulfate and 0.08 g of tetramethylethylenediamine were added, and the reaction was stirred to obtain a hydrogel. The hydrogel was impregnated into a non-woven fabric, and then dried to obtain a modified non-woven fabric.

[0041] Example 2

[0042] A method for preparing an easily removable tampon comprises the following steps:

[0043] (1) 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;

[0044] (2) wrapping the cotton fiber layer with a modified non-woven fabric, 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 cm outside the strip fiber layer, to obtain a strip fiber layer with cotton thread;

[0045] (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 50° C. for 2 seconds to obtain a tampon body;

[0046] (4) inserting the tampon body of the tampon into the catheter to obtain a tampon that is easy to remove;

[0047] The preparation method of the modified fiber comprises the following steps:

[0048] Add 10 mL of 18% sodium hydroxide solution to a beaker containing 20 g of viscose fiber, heat to 40° C., stir, and stand for reaction for 50 minutes, then add 20 g of chloroacetic acid and isopropanol, heat to 60° C. to react, and obtain preliminary modified viscose fiber; then add the preliminary modified viscose fiber to 10 mg / mL of silk fibroin solution, add 3 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 modified fiber;

[0049] The preparation method of the modified nonwoven fabric comprises the following steps:

[0050] 1 g of chitosan was dissolved in an acetic acid solution with a mass fraction of 10%, heated to 45° C. in a water bath, and stirred until completely dissolved to obtain a chitosan solution. Then, 0.1 g of N, N-methylenebisacrylamide was added, and ultrasonic dispersion was performed. Then, 2 g of polyaspartic acid, 0.1 g of ammonium persulfate and 0.08 g of tetramethylethylenediamine were added, and the mixture was stirred for reaction to obtain a hydrogel. Non-woven fabric was impregnated with the hydrogel, and then the modified non-woven fabric was obtained by drying.

[0051] Example 3

[0052] A method for preparing an easily removable tampon comprises the following steps:

[0053] (1) 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;

[0054] (2) wrapping the cotton fiber layer with a modified non-woven fabric, 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;

[0055] (3) curling the strip fiber layer with cotton thread to form a long cylindrical absorbent body, pressing and molding in a former, and then subjecting the press to microwave heating at 65° C. for 8 seconds to obtain a tampon body;

[0056] (4) inserting the tampon body of the tampon into the catheter to obtain a tampon that is easy to remove;

[0057] The preparation method of the modified fiber comprises the following steps:

[0058] Add 10 mL of 22% sodium hydroxide solution to a beaker containing 30 g of viscose fiber, heat to 50° C., stir, and stand for reaction for 100 min, then add 60 g of chloroacetic acid and isopropanol, heat to 80° C. to react, and obtain preliminary modified viscose fiber; then add the preliminary modified viscose fiber to 25 mg / mL of silk fibroin solution, add 3 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 modified fiber;

[0059] The preparation method of the modified nonwoven fabric comprises the following steps:

[0060] 3 g of chitosan was dissolved in an acetic acid solution with a mass fraction of 10%, heated to 55° C. in a water bath, and stirred until completely dissolved to obtain a chitosan solution. Then, 0.2 g of N, N-methylenebisacrylamide was added, and ultrasonic dispersion was performed. Then, 4 g of polyaspartic acid, 0.1 g of ammonium persulfate and 0.08 g of tetramethylethylenediamine were added, and the mixture was stirred for reaction to obtain a hydrogel. The hydrogel was impregnated into a non-woven fabric, and then dried to obtain a modified non-woven fabric.

[0061] Comparative Example 1

[0062] A method for preparing a tampon comprises the following steps:

[0063] (1) 60 g of cotton fiber and 30 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;

[0064] (2) wrapping the cotton fiber layer with a modified non-woven fabric, 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;

[0065] (3) curling the strip fiber layer with cotton thread to form a long cylindrical absorbent body, pressing and molding in a former, and then subjecting the mold to microwave heating at 60° C. for 5 seconds to obtain a tampon body;

[0066] (4) inserting the tampon body of the tampon into a catheter to obtain the tampon;

[0067] The preparation method of the modified nonwoven fabric comprises the following steps:

[0068] 2 g of chitosan was dissolved in an acetic acid solution with a mass fraction of 10%, heated to 50°C in a water bath, and stirred until completely dissolved to obtain a chitosan solution. Then, 0.15 g of N, N-methylenebisacrylamide was added, and ultrasonic dispersion was performed. Then, 3 g of polyaspartic acid, 0.1 g of ammonium persulfate and 0.08 g of tetramethylethylenediamine were added, and the reaction was stirred to obtain a hydrogel. The hydrogel was impregnated into a non-woven fabric, and then dried to obtain a modified non-woven fabric.

[0069] Comparative Example 2

[0070] A method for preparing a tampon comprises the following steps:

[0071] (1) 60 g of cotton fiber and 30 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] (2) 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] (3) curling the strip fiber layer with cotton thread to form a long cylindrical absorbent body, pressing and molding in a former, and then subjecting the mold to microwave heating at 60° C. for 5 seconds to obtain a tampon body;

[0074] (4) inserting the tampon body of the tampon into a catheter to obtain the tampon;

[0075] The preparation method of the modified fiber comprises the following steps:

[0076] Add 10 mL of 20% sodium hydroxide solution to a beaker containing 30 g of viscose fiber, heat to 45° C., stir, and stand for reaction for 75 minutes, then add 45 g of chloroacetic acid and isopropanol, heat to 70° C. to react, and obtain preliminary modified viscose fiber; then add the preliminary modified viscose fiber to 15 mg / mL of silk fibroin solution, add 3 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 modified fiber.

[0077] Test methods and results

[0078] Randomly select tampons prepared in Examples 1-3 and Comparative Examples 1-2, 20 in each group, test the push-out force of any 10 tampons after production, calculate the average push-out force, and test the average push-out force of the other 10 tampons after soaking, and test the absorption capacity. The test results are shown in Table 1 below.

[0079] Table 1 Statistical results of the push-out force and absorption of tampons

[0080]

[0081] It can be seen from Table 1 above that, compared with Comparative Examples 1-2, the tampons prepared in Examples 1-3 of the present invention have a larger absorption capacity, and the pushing force after being soaked is greatly reduced.

[0082] 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 that is easy to remove, characterized in that: The following steps are involved: S1, mixing cotton fibers and modified fibers, and then combing them, laying them into a single layer of cotton fibers after combing, and then stacking, shaping and cutting the single layer of cotton fibers to obtain a cotton fiber layer; S2, wrapping the cotton fiber layer with a modified non-woven fabric, 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 10-20 cm outside the strip fiber layer, to obtain a strip fiber layer with cotton thread; S3, 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; S4. The tampon body of the tampon is placed into a catheter to obtain a tampon that is easy to remove.

2. The method for preparing the easily removable tampon according to claim 1, characterized in that: In step S1, the method for preparing the modified fiber comprises the following steps: 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 a 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.

3. The method for preparing the easily removable tampon according to claim 2, characterized in that: The mass fraction of the sodium hydroxide solution is 18-22%; the heating temperature is 40-50°C; the static reaction time is 50-100 minutes; the heating reaction temperature is 60-80°C; the mass ratio of chloroacetic acid to viscose fiber is (1-2):1; and the concentration of the silk fibroin solution is 10-20 mg / mL.

4. The method for preparing the easily removable tampon according to claim 1, characterized in that: In step S2, the method for preparing the modified nonwoven fabric comprises the following steps: The chitosan is dissolved in an acetic acid solution, heated in a water bath, and stirred until completely dissolved to obtain a chitosan solution, and then N, N-methylenebisacrylamide is added, ultrasonically dispersed, and then polyaspartic acid, ammonium persulfate and tetramethylethylenediamine are added, stirred for reaction, and a hydrogel is obtained. The hydrogel is impregnated into a non-woven fabric, and then dried to obtain a modified non-woven fabric.

5. The method for preparing the easily removable tampon according to claim 4, characterized in that: The mass ratio of chitosan, polyaspartic acid and N,N-methylenebisacrylamide is (10-30): (20-40): (1-2).

6. The method for preparing the easily removable tampon according to claim 4, characterized in that: The water bath heating temperature is 45-55°C.

7. The method for preparing an easily removable tampon according to claim 1, characterized in that: In step S1, the mass ratio of the cotton fiber to the modified fiber is (5-8):(2-4).

8. The method for preparing the easily removable tampon according to claim 1, characterized in that: In step S1, the weight of the cotton fiber layer is 300-850 g / m 2 .

9. The method for preparing an easily removable tampon 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. An easily-removable tampon prepared by the method according to any one of claims 1 to 9.

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