Quick-infiltration type medicine core sanitary napkin

Abstract

The invention relates to the field of hygienic products, provides a quick-seepage type medicine-cored sanitary towel, and solves the problems that a traditional medicine-cored sanitary towel is uneven in medicine powder scattering due to small medicine powder particle size and slow in liquid infiltration due to large medicine core density, and meanwhile, the medicine powder is prone to microbial breeding risk, effective components react and volatilize, the medicine powder escapes outwards and the like. Comprising a sanitary napkin body, and the sanitary napkin body comprises a partition edge, a surface layer, a flow guide layer, a medicine core piece layer, an absorber and a leakage-proof bottom film which are sequentially stacked from top to bottom; the medicine chip layer is composed of an upper wrapping layer, a component layer and a lower wrapping layer; 5 mL of liquid is applied to the sanitary napkin body in a single point mode, when the liquid penetrates through the face layer and the flow guide layer to the medicine core piece layer, the infiltration time of the liquid in the medicine core piece layer is shorter than 5 seconds, the liquid residual quantity of the medicine core piece layer does not exceed 5%, and the diffusion area of the liquid in the absorption body is two times or above of the diffusion area of the liquid in the face layer; and the component layer contains medicinal powder or Chinese herbal medicine extract.

Description

Technical Field

[0001] This invention relates to the field of hygiene products, and more particularly to a quick-absorbing medicated core sanitary napkin. Background Technology

[0002] Currently, sanitary napkin products focus on functions such as leak prevention, instant absorption, and breathability, with a significant lack of products incorporating herbal ingredients. However, with increasing emphasis on health and wellness, sanitary napkins containing traditional Chinese medicine have considerable development potential. Currently available medicated sanitary napkins primarily use hot-melt adhesive to fix the medicinal powder to the non-woven fabric, or add the powder through a wrapping layer. This method results in uneven powder distribution, slow blood absorption during liquid seepage, and difficulty in achieving complete absorption, easily leading to a damp and non-drying product. Furthermore, the medicinal powder can easily cause microbial growth.

[0003] Chinese Patent Publication No. CN117258021A discloses a sanitary napkin containing traditional Chinese medicine powder and its manufacturing method. The sanitary napkin containing traditional Chinese medicine powder is divided into four layers, including a surface layer, a traditional Chinese medicine composition, an inner absorbent layer, and a leak-proof bottom film layer. The traditional Chinese medicine composition includes traditional Chinese medicinal materials and fine powder. The traditional Chinese medicinal materials are composed of 3-10 parts of dried tangerine peel, 3-10 parts of licorice root, 2-6 parts of Atractylodes lancea, 2-6 parts of Atractylodes macrocephala, 1-4 parts of frankincense, 1-4 parts of myrrh, 2-6 parts of Bletilla striata, 2-6 parts of Ampelopsis japonica, 2-6 parts of Dictamnus dasycarpus, and 2-6 parts of Stemona japonica. The fine powder is composed of 3-10 parts of Angelica sinensis powder, 3-10 parts of Paeonia lactiflora powder, 3-10 parts of Sophora flavescens powder, 3-10 parts of Corydalis yanhusuo powder, 1-4 parts of Poria cocos sclerotium powder, and 1-4 parts of pearl powder. This invention describes a sanitary napkin containing over 75% of its surface area infused with traditional Chinese medicine powder. By combining a traditional Chinese medicine composition with the sanitary napkin, the powder is applied to the perineum and buttocks to alleviate menstrual discomfort, reduce menstrual cramps, inhibit bacteria, prevent odor, and maintain women's health. However, this patented design uses a single sheet of traditional Chinese medicine powder with a high concentration of powder, posing risks of leakage, dust generation, and clumping. This could easily cause allergies or irritation and may affect the stable absorption and water retention of the absorbent layer. The particle size and distribution of the powder can also influence liquid penetration.

[0004] Chinese Patent Publication No. CN216933748U discloses a multi-functional antibacterial sanitary napkin for menstrual blood. This multi-functional antibacterial sanitary napkin includes a non-woven fabric surface layer, a functional layer, a composite core layer, and a leak-proof bottom film. The non-woven fabric surface layer has a first small hole, and a functional layer with anti-inflammatory and antibacterial properties is located below the non-woven fabric surface layer. The functional layer contains non-woven fabric, and the non-woven fabric contains traditional Chinese medicine powder with anti-inflammatory and antibacterial properties. The non-woven fabric surface layer and the functional layer are bonded together with an adhesive. The composite core layer includes several layers of dust-free paper. The non-woven fabric surface layer, functional layer, and composite core layer all have interpenetrating second small holes. This sanitary napkin contains a functional layer with anti-inflammatory and antibacterial properties, which can improve the antibacterial effect of the sanitary napkin. In addition, the structural design of the first and second small holes can improve the moisture absorption and breathability of the sanitary napkin. However, the first / second small holes in this sanitary napkin increase the probability of powder leakage and secondary contamination, and the powder layer may hinder absorption and drainage. Summary of the Invention

[0005] Therefore, in view of the above problems, the present invention provides a fast-absorbing medicated core sanitary napkin, which solves the problems of uneven distribution of medicated powder due to small particle size, slow liquid penetration due to high core density, and the risk of microbial growth, reaction and volatilization of active ingredients, as well as the leakage of medicated powder in traditional medicated core sanitary napkins.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A quick-absorbing medicated core sanitary napkin includes a sanitary napkin body, which comprises, from top to bottom, a side panel, a surface layer, a diversion layer, a medicated core layer, an absorbent core, and a leak-proof bottom film stacked in sequence. The medicated core layer consists of an upper wrapping layer, a component layer, and a lower wrapping layer. The absorbent core is a high-diffusion core, consisting of an upper quick-absorbing wrapping layer, a middle layer, and a lower high-diffusion wrapping layer. When 5 mL of liquid is applied to the sanitary napkin body at a single point, the liquid penetrates the surface layer and diversion layer to reach the medicated core layer, and the liquid penetration time in the medicated core layer is less than 5 seconds. The liquid residue in the medicated core layer does not exceed 5%, and the diffusion area of ​​the liquid in the absorbent core is more than twice the diffusion area in the surface layer. The component layer contains medicinal powder or herbal extracts.

[0007] Furthermore, the herbal extract is a Bazhen microcapsule particle, which is prepared by inclusion complexation of Bazhen extract with cyclodextrin and has a particle size of 50-1000µm; the raw materials of Bazhen extract include: Artemisia argyi, Cyperus rotundus, fennel, Atractylodes macrocephala, Angelica sinensis, Paeonia lactiflora, cinnamon, and ginseng.

[0008] The main active ingredients of the Eight Treasures Extract include artemisinin, cyperone, anethole, atractylodes lactone, ferulic acid, paeoniflorin, cinnamaldehyde, ginsenosides, etc.

[0009] Furthermore, the preparation method of the drug chip layer is as follows: the Bazhen microcapsule particles are evenly spread between the upper and lower coating layers, and fixed by spraying glue or hot pressing to evenly wrap the Bazhen microcapsule particles in the middle, forming a drug chip layer with uniform overall thickness.

[0010] Furthermore, both the upper and lower wrapping layers are made of high-porosity materials, which are any one of hot-air nonwoven fabric, spunbond nonwoven fabric, hot-pressed nonwoven fabric, or meltblown nonwoven fabric; and both the upper and lower wrapping layers are colored.

[0011] Furthermore, the drug chip layer is weakly acidic, with a pH value of 4-6.

[0012] Furthermore, the upper rapid-diffusion wrapping layer is a low-diffusion nonwoven fabric, made of any one of rapid-diffusion hot-air nonwoven fabric, spunbond nonwoven fabric, or hot-air composite material; the lower high-diffusion wrapping layer is a high-diffusion nonwoven fabric, made of any one of viscose spunlace fabric, wood pulp spunlace fabric, or viscose-polyester nonwoven fabric; and the middle layer is a mixed layer of fluff pulp and superabsorbent polymer.

[0013] By adopting the aforementioned technical solution, the beneficial effects of the present invention are as follows: 1. The device is designed with a highly diffusive absorbent, which allows liquid to quickly penetrate the absorbent after contacting the drug chip on the surface layer, resulting in a faster absorption speed than traditional sanitary napkins. The middle layer of the drug chip layer contains coarse-grained Bazhen microcapsule particles, which balances the uniformity of dispersal with the efficiency of liquid penetration, eliminating the feeling of particles or foreign objects during use and improving comfort. 2. The Bazhen microcapsule particles in the drug chip layer are prepared by cyclodextrin inclusion complexation process, which stably encapsulates the active ingredients and avoids the problems of easy agglomeration, uneven distribution, and high density that hinders penetration caused by direct addition of traditional drug powder. The microcapsule particles are evenly distributed between the upper and lower hydrophilic non-woven fabric layers, which not only ensures full contact between the drug and menstrual blood, but also prevents the liquid from being affected by excessive filling, while realizing the sustained release function of the active ingredients. 3. The drug chip layer is fixed by spraying adhesive and hot pressing two layers of hydrophilic non-woven fabric to uniformly wrap the Bazhen microcapsule particles. This not only avoids the problem of traditional drug cores being easy to fall off and break, but also accelerates the conduction of liquid to the absorbent through the hydrophilicity of the non-woven fabric. 4. The extracts of Bazhen contain Artemisia argyi / cinnamon to warm the meridians and dispel cold, Cyperus rotundus / Angelica sinensis to regulate qi and promote blood circulation, Atractylodes macrocephala / ginseng to replenish qi and strengthen the spleen, and Paeonia lactiflora / fennel to relieve pain and alleviate the problem of cold uterus during menstruation in women. 5. The slightly acidic pH of the medicated chip layer (pH 4-6) is consistent with the slightly acidic environment of the human private parts, avoiding bacterial imbalance or mucosal discomfort caused by alkaline or strongly acidic medicated chips. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a sanitary napkin in an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the drug delivery chip layer in an embodiment of the present invention; The labels in the diagram are as follows: 1-side divider, 2-top layer, 3-guide layer, 4-drug chip layer, 5-absorbent, 6-leak-proof bottom membrane, 41-upper coating layer, 42-component layer, 43-lower coating layer, 51-upper rapidly penetrating coating layer, 52-intermediate layer, 53-lower high-diffusion coating layer, 421-Bazhen microcapsule particles. Detailed Implementation Example 1

[0015] refer to Figures 1 to 2 A quick-absorbing medicated core sanitary napkin includes a sanitary napkin body, which comprises, from top to bottom, a side panel 1, a surface layer 2, a diversion layer 3, a medicated core layer 4, an absorbent core 5, and a leak-proof bottom film 6, stacked sequentially. The medicated core layer 4 is composed of an upper wrapping layer 41, a component layer 42, and a lower wrapping layer 43. The absorbent core 5 is a high-diffusion core, composed of an upper quick-absorbing wrapping layer 51, a middle layer 52, and a lower high-diffusion wrapping layer 53. When 5 mL of liquid is applied to the sanitary napkin body at a single point, and the liquid penetrates the surface layer and the diversion layer to the medicated chip layer, the liquid penetration time T in the medicated chip layer is 4.0 seconds, and the liquid residue in the medicated chip layer is 4.2%. When 5 mL of liquid is applied to the sanitary napkin body at a single point, and the liquid penetrates the surface layer, the diffusing layer, the medicated chip layer, the absorbent core, and finally seeps down to the bottom film, the diffusion area of ​​the liquid in the absorbent core is 4 times that in the surface layer; the liquid is synthetic blood simulating menstrual blood, and the overall absorption rate test is conducted according to GB / T 8939-2018 "Sanitary Napkins (Patrolleys)", and the time T for complete absorption of 5 mL of liquid is recorded.

[0016] The component layer 42 contains traditional Chinese medicine extracts; the traditional Chinese medicine extracts are Bazhen microcapsule particles 421, which are prepared by inclusion complexation of Bazhen extracts with cyclodextrin and have a particle size of 100µm; the raw materials of Bazhen extracts include the following components in parts by weight: 15 parts Artemisia argyi, 20 parts Cyperus rotundus, 6 parts Fennel, 8 parts Atractylodes macrocephala, 12 parts Angelica sinensis, 10 parts Paeonia lactiflora, 3 parts Cinnamomum cassia, and 4 parts Panax ginseng; the main active ingredients of Bazhen extracts include artemisinin, cyperone, anethole, atractylodes macrocephala lactone, ferulic acid, paeoniflorin, cinnamaldehyde, ginsenosides, etc. The preparation method of the drug chip layer is as follows: Bazhen microcapsule particles are evenly spread between the upper and lower coating layers and fixed by spraying glue to evenly wrap the Bazhen microcapsule particles in the middle, forming a drug chip layer with uniform overall thickness; the Bazhen microcapsule particles are evenly dispersed without clumping, and there is no local accumulation or gaps after spreading.

[0017] The medicated chip layer 4 is weakly acidic with a pH value of 5.1, which is compatible with the weakly acidic environment (pH 4-6) of the human private parts and causes no irritation when used.

[0018] The upper rapid-diffusion wrapping layer is a low-diffusion nonwoven fabric, made of hot-air nonwoven fabric; the lower high-diffusion wrapping layer is a high-diffusion nonwoven fabric, made of viscose spunlace fabric; the middle layer is a mixture of fluff pulp and superabsorbent polymer, with a ratio of fluff pulp to superabsorbent polymer of 3:1.

[0019] The upper wrapping layer is hot-air nonwoven fabric, and the lower wrapping layer is spunbond nonwoven fabric; both the upper and lower wrapping layers are brown. Example 2

[0020] The difference from Example 1 is as follows: When 5 mL of liquid is applied to the sanitary napkin body at a single point, the liquid penetrates the surface layer and the diversion layer to the medicated chip layer. The infiltration time T of the liquid in the medicated chip layer is 4.2 seconds, and the liquid residue in the medicated chip layer is 3.8%. When 5 mL of liquid is applied to the sanitary napkin body at a single point, and the liquid penetrates the surface layer, the diffusing layer, the medicated chip layer, the absorbent core, and finally seeps down to the bottom film, the diffusion area of ​​the liquid in the absorbent core is 4 times that in the surface layer; the liquid is synthetic blood simulating menstrual blood, and the overall absorption rate test is conducted according to GB / T 8939-2018 "Sanitary Napkins (Patrolleys)", and the time T for complete absorption of 5 mL of liquid is recorded; The Bazhen microcapsule particles are prepared by encapsulation of Bazhen extract with cyclodextrin, with a particle size of 80µm. The raw materials of the Bazhen extract include the following components in parts by weight: 18 parts Artemisia argyi, 22 parts Cyperus rotundus, 5 parts Fennel, 10 parts Atractylodes macrocephala, 12 parts Angelica sinensis, 5 parts Paeonia lactiflora, 6 parts Cinnamomum cassia, and 6 parts Panax ginseng. The main active ingredients of the Bazhen extract include artemisinin, cyperone, anethole, atractylodes lactone, ferulic acid, paeoniflorin, cinnamaldehyde, and ginsenosides. The upper rapid-diffusion wrapping layer is a low-diffusion nonwoven fabric, made of hot-air nonwoven fabric; the lower high-diffusion wrapping layer is a high-diffusion nonwoven fabric, made of wood pulp spunlace fabric; the middle layer is a mixture of fluff pulp and superabsorbent polymer, with a ratio of fluff pulp to superabsorbent polymer of 4:1; the upper wrapping layer is meltblown nonwoven fabric, and the lower wrapping layer is hot-pressed nonwoven fabric; both the upper and lower wrapping layers are brown. Example 3

[0021] The difference from Example 1 is as follows: When 5 mL of liquid is applied to the sanitary napkin body at a single point, the liquid penetrates the surface layer and the diversion layer to the medicated chip layer. The infiltration time T of the liquid in the medicated chip layer is 4.6 seconds, and the liquid residue in the medicated chip layer is 4.5%. When 5 mL of liquid is applied to the sanitary napkin body at a single point, and the liquid penetrates the surface layer, the diffusing layer, the medicated chip layer, the absorbent core, and finally seeps down to the bottom film, the diffusion area of ​​the liquid in the absorbent core is 4 times that in the surface layer; the liquid is synthetic blood simulating menstrual blood, and the overall absorption rate test is conducted according to GB / T 8939-2018 "Sanitary Napkins (Patrolleys)", and the time T for complete absorption of 5 mL of liquid is recorded; The Bazhen microcapsule particles are prepared by encapsulation of Bazhen extract with cyclodextrin, with a particle size of 150µm. The raw materials of the Bazhen extract include the following components in parts by weight: 12 parts Artemisia argyi, 25 parts Cyperus rotundus, 8 parts Fennel, 6 parts Atractylodes macrocephala, 18 parts Angelica sinensis, 8 parts Paeonia lactiflora, 2 parts Cinnamomum cassia, and 3 parts Panax ginseng. The main active ingredients of the Bazhen extract include artemisinin, cyperone, anethole, atractylodes lactone, ferulic acid, paeoniflorin, cinnamaldehyde, and ginsenosides. The upper rapid-diffusion wrapping layer is a low-diffusion nonwoven fabric, made of hot-air nonwoven fabric; the lower high-diffusion wrapping layer is a high-diffusion nonwoven fabric, made of viscose-polyester nonwoven fabric; the middle layer is a mixture of fluff pulp and superabsorbent polymer, with a ratio of fluff pulp to superabsorbent polymer of 5:1; the upper wrapping layer is a hot-air nonwoven fabric, and the lower wrapping layer is a spunbond nonwoven fabric; both the upper and lower wrapping layers are brown.

[0022] The detection data for Examples 1, 2, and 3 are shown in Table 1: Test Project Example 1 Example 2 Example 3 pH 5.2 4.6 6.0 Absorption rate T (s) 4.0 4.2 4.6 Drug chip liquid residue (%) 4.2 3.8 4.5 As can be seen from the test results in Table 1, the T values ​​of Examples 1, 2, and 3 are 4.0s, 4.2s, and 4.6s, respectively, all less than 20 seconds. This indicates that the sanitary napkins of the three examples have good overall absorption speed and can quickly absorb synthetic blood that simulates menstrual blood.

[0023] In all three embodiments, the liquid could quickly penetrate from the surface layer to the absorber without any residue visible to the naked eye. The liquid residue in the drug chip was 4.2%, 3.8%, and 4.5%, respectively, indicating that the liquid could successfully penetrate the surface layer to reach the absorber, and there was little residue in the drug chip layer, resulting in good absorption.

[0024] The pH values ​​of the chip layers in Examples 1, 2, and 3 were 5.2, 4.6, and 6.0, respectively, all within the range of the weakly acidic environment of the human private parts (pH value of 4-6). This indicates that the sanitary napkins of the three examples are non-irritating to use and meet the physiological environment requirements of the human private parts.

[0025] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which shall be within the scope of protection of the invention.

Claims

1. A quick-absorbing medicated core sanitary napkin, characterized in that, The sanitary napkin body comprises, from top to bottom, a side panel, a surface layer, a diversion layer, a medicated chip layer, an absorbent core, and a leak-proof bottom film, stacked in sequence. The medicated chip layer consists of an upper wrapping layer, a component layer, and a lower wrapping layer. The absorbent core is a highly diffusive core, consisting of an upper rapidly penetrating wrapping layer, a middle layer, and a lower highly diffusive wrapping layer. When 5 mL of liquid is applied to the sanitary napkin body at a single point, the liquid penetrates the surface layer and diversion layer to reach the medicated chip layer, with the penetration time in the medicated chip layer being less than 5 seconds, the residual liquid in the medicated chip layer not exceeding 5%, and the diffusion area of ​​the liquid in the absorbent core being more than twice the diffusion area in the surface layer. The component layer contains medicinal powder or herbal extracts.

2. The quick-absorbing sanitary napkin with a medicated core according to claim 1, characterized in that, The herbal extract is a Bazhen microcapsule, which is prepared by encapsulating the Bazhen extract with cyclodextrin and has a particle size of 50-1000µm. The raw materials of the Bazhen extract include: Artemisia argyi, Cyperus rotundus, fennel, Atractylodes macrocephala, Angelica sinensis, Paeonia lactiflora, cinnamon, and ginseng.

3. The quick-absorbing sanitary napkin with a medicated core according to claim 1, characterized in that, The preparation method of the drug chip layer is as follows: Bazhen microcapsule particles are evenly spread between the upper and lower coating layers, and fixed by spraying glue or hot pressing to evenly wrap the Bazhen microcapsule particles in the middle, forming a drug chip layer with uniform overall thickness.

4. The quick-absorbing sanitary napkin with a medicated core according to claim 1, characterized in that, Both the upper and lower wrapping layers are made of high-porosity materials, which can be any one of hot-air nonwoven fabric, spunbond nonwoven fabric, hot-pressed nonwoven fabric, or meltblown nonwoven fabric; both the upper and lower wrapping layers are colored.

5. A quick-absorbing sanitary napkin with a medicated core according to claim 1, characterized in that, The chip layer is weakly acidic, with a pH value of 4-6.

6. The quick-absorbing sanitary napkin with a medicated core according to claim 1, characterized in that, The upper rapid-diffusion wrapping layer is a low-diffusion nonwoven fabric, made of any one of the following: rapid-diffusion hot-air nonwoven fabric, spunbond nonwoven fabric, or hot-air composite material; the lower high-diffusion wrapping layer is a high-diffusion nonwoven fabric, made of any one of the following: viscose spunlace fabric, wood pulp spunlace fabric, or viscose-polyester nonwoven fabric; the middle layer is a mixed layer of fluff pulp and superabsorbent polymer.

Images