Sanitary napkin containing microcapsules and method for releasing microcapsules thereof

Abstract

The application discloses a sanitary napkin containing microcapsules, comprising: an absorbent core; a bottom layer adhered to one side of the absorbent core; a surface layer adhered to the other side of the absorbent core, the surface layer being bonded to the opposite edge of the bottom layer; a microcapsule strip arranged inside the absorbent core; a cavity arranged inside the absorbent core, the microcapsule strip being located inside the cavity; and two openings arranged on the bottom layer and the absorbent core, the openings being in communication with the cavity. The sanitary napkin has stored a microcapsule strip inside, but according to different experiences of users or different needs of the users on a day, the microcapsule strip inside the sanitary napkin can be pulled out from the openings and then put into the other opening, so that the whole microcapsule strip is pulled into the sanitary napkin, thereby completing the replacement operation of the microcapsule in the sanitary napkin and realizing the adjustment of different types of microcapsules according to the needs.

Description

Technical Field

[0001] This invention relates to the field of sanitary napkin technology, and more specifically to a sanitary napkin containing microcapsules and a method for releasing the microcapsules. Background Technology

[0002] Sanitary napkins are hygiene products used by women during menstruation. The main materials are cotton, non-woven fabric, pulp, or a combination of the above materials to form a polymer and polymer composite paper.

[0003] There are various styles of sanitary napkins. The application of microencapsulation technology in sanitary napkins shows great promise. For example, during menstruation, due to decreased hormone levels, women experience significant disruption to the central nervous system. Combined with physical discomfort and weakened immunity, this can easily lead to emotional stress, irritability, and other problems. Microencapsulation technology can encapsulate a soothing essential oil that can alleviate menstrual discomfort, providing a lasting soothing effect when using sanitary products.

[0004] Alternatively, menstrual blood and other secretions accumulating inside sanitary napkins during a woman's menstrual period can easily lead to bacterial growth and reproduction, causing various menstrual problems such as gynecological odor, itchy skin, and vaginal bacterial infections. Adding antibacterial microcapsules to sanitary napkins can give the surface layer an antibacterial effect.

[0005] However, existing microencapsulation technology mainly focuses on achieving single functions, such as antibacterial microcapsules, fragrance microcapsules, or deodorizing microcapsules. The processing primarily involves integrating the microcapsule particles with the sanitary napkin as a single unit, making it non-replaceable. But consumers may actually prefer products that can simultaneously fulfill multiple functions, i.e., sanitary napkins containing microcapsules with cross-functional capabilities. Summary of the Invention

[0006] In order to solve at least one of the technical problems mentioned in the background art, the present invention aims to provide a sanitary napkin containing microcapsules and a method for releasing the microcapsules thereon, which can adjust the type of internal microcapsules as needed.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a sanitary napkin containing microcapsules, comprising:

[0008] Absorbing core;

[0009] The bottom layer is bonded to one side of the absorbent core;

[0010] The surface layer is bonded to the other side of the absorbent core, and the surface layer is bonded to the edge of the opposite side of the bottom layer;

[0011] Microcapsule strips are placed inside the absorbent core;

[0012] A chamber is located inside the absorbent core, and the microcapsule strips are located inside the chamber.

[0013] An opening is formed on the bottom layer and the absorbent core, and the opening is connected to the chamber. There are two openings, located on both sides of the microcapsule strip.

[0014] Furthermore, the microcapsule strip includes a casing, which is filled with multiple microcapsule particles. The side of the casing includes a tear-off section and a protective section, which are connected by a mitered thread. A pull line is fixedly installed on one side of the tear-off section, which extends from one side of the tear-off section to the other side and out of the absorbent core.

[0015] Furthermore, the absorbent core has multiple liquid storage tanks on the side near the surface layer, and the multiple liquid storage tanks are distributed along the width direction of the absorbent core.

[0016] Furthermore, the absorbent core comprises an upper layer, a middle layer, and a lower layer, wherein the upper layer is a flow-guiding material, the middle layer is a barrier material, and the lower layer is a water-locking material.

[0017] Furthermore, the microcapsule strips are located on both sides of the liquid storage tank, and a chamber for accommodating the microcapsule strips is provided between the upper and lower layers. Openings for communicating with the chambers are provided on both the upper and surface layers and on both sides of the microcapsule strips. Hooks are formed on both sides of the microcapsule strips, and holes are provided on the hooks.

[0018] Furthermore, it also includes protective wings on both sides of the bottom layer. The side of the bottom layer away from the absorbent core is coated with adhesive, and a first patch covering the adhesive is provided on the bottom layer. One side of the protective wing is coated with adhesive, and a second patch is provided at the adhesive area.

[0019] Furthermore, the microcapsule strip contains absorbent paper, and the microcapsule particles encapsulate the absorbent paper.

[0020] A method for releasing microcapsules from a sanitary napkin containing microcapsules:

[0021] S1. First, open the sanitary napkin and take out the corresponding microcapsule strip according to your needs;

[0022] S2. As needed, insert the hook strip into the opening and extract the microcapsule strip inside the chamber;

[0023] S3. Insert the hook strip into one side opening and extend it out from the other side opening to hook the selected microcapsule strip and pull the microcapsule strip into the cavity of the sanitary napkin;

[0024] S4. Manually press the protective section on the microcapsule strip, then pull the pull string on the tear-off section. The pull string will cause the tear-off section to separate from the protective section, revealing the microcapsules inside the microcapsule strip.

[0025] S5. Cover the opening, shake the sanitary napkin, tear off the first and second patches, and stick the sanitary napkin to your underwear.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows: a microcapsule strip is already stored inside the sanitary napkin, but according to different user experiences or different needs of the user on the same day, the microcapsule strip inside the sanitary napkin can be removed from the opening. Specifically, a hook strip (made of hard materials such as iron or plastic) is used to hook the microcapsule strip at the inlet, and then the microcapsule strip is removed from the sanitary napkin. Then, the hook strip is inserted into the opening on one side and then extended out from the opening on the other side to hook the microcapsule strip, thereby pulling the entire microcapsule strip into the sanitary napkin, thus completing the replacement of the sanitary napkin with microcapsules, and realizing the adjustment of different types of microcapsules according to one's own needs. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is an overall structural unfolded view of the present invention;

[0029] Figure 3 This is a cross-sectional view of the overall structure of the present invention;

[0030] Figure 4 This is a cross-sectional view of the capsule strip structure of the present invention;

[0031] Figure 5 This is a schematic diagram of the capsule strip structure of the present invention.

[0032] In the diagram: 1. Absorbent core; 11. Upper layer; 12. Middle layer; 13. Lower layer; 14. Capsule strip; 141. Outer shell; 1411. Tearable section; 1412. Protective section; 1413. Pull cord; 142. Microcapsule particles; 143. Absorbent paper; 144. Hook; 145. Hole; 15. Chamber; 16. Opening; 2. Top layer; 3. Bottom layer; 4. Wings; 5. First patch; 6. Second patch; 7. Liquid reservoir. Detailed Implementation

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figure 1 and Figure 2This embodiment provides a sanitary napkin containing microcapsules, including a sanitary napkin body, protective wings 4 on both sides of the sanitary napkin body, adhesive applied to the side of the sanitary napkin body away from the skin, a first patch 5 covered with adhesive on the sanitary napkin body, adhesive applied to one side of the protective wings 4, and a second patch 6 on the protective wings 4. The first patch 5 and the second patch 6 are coated on the side of the sanitary napkin body, thereby reducing the adhesion between the first patch 5 and the adhesive.

[0035] When using it, first peel off the first patch 5, stick the adhesive side of the sanitary napkin to the middle of the underwear, then peel off the second patch 6, and fold the two wings 4 over and stick them firmly to the narrowest part of the crotch of the underwear to fix the sanitary napkin in place. Put on the underwear to complete the wearing of the sanitary napkin.

[0036] There are various styles of sanitary napkins. The application of microencapsulation technology in sanitary napkins shows great promise. For example, during menstruation, due to decreased hormone levels, women experience significant disruption to the central nervous system. Combined with physical discomfort and weakened immunity, this can easily lead to emotional stress, irritability, and other problems. Microencapsulation technology can encapsulate a soothing essential oil that can alleviate menstrual discomfort, providing a lasting soothing effect when using sanitary products.

[0037] Alternatively, menstrual blood or other secretions accumulating inside sanitary napkins during a woman's menstrual period can easily lead to bacterial growth and reproduction, causing various menstrual problems such as gynecological odor, itchy skin, and vaginal bacterial infections. Adding antibacterial microcapsules to sanitary napkins can give the surface layer an antibacterial effect.

[0038] Please see Figure 1 and Figure 2 To address the aforementioned issues, the sanitary napkin body includes an absorbent core 1 with microcapsules, a bottom layer 3 and a top layer 2 located on both sides of the absorbent core, wherein the surface areas of both the bottom layer 3 and the top layer 2 are larger than that of the absorbent core 1, the bottom layer 3 and the top layer 2 are bonded at their edges to wrap around the absorbent core 1, wherein the bottom layer 3 and the opposite surfaces of the absorbent core 1 are bonded together, and the top layer 2 and the absorbent core 1 are bonded together on opposite sides, the protective wings 4 are fixedly connected to the bottom layer 3, and the first patch 5 is bonded to the bottom layer 3.

[0039] The top layer 2 is mainly an antibacterial layer. The antibacterial layer is formed by immersing the non-woven fabric of the base layer 2 in an antibacterial improvement solution. After immersion, the top layer 2 is removed and dried to obtain the antibacterial layer. The bottom layer 3 is mainly a waterproof bottom layer. The side of the bottom layer 3 away from the absorbent core 1 is coated with adhesive and bonded to the first patch 5.

[0040] The bodily fluids excreted by the body will remain on the surface of the sanitary napkin for a period of time. If the surface of the sanitary napkin is relatively flat, the bodily fluids will have a larger contact area with the skin. Since the reaction between the antibacterial agent, microcapsule and bodily fluids takes a certain amount of time, the probability of initial skin itching and other inflammations is still relatively high.

[0041] Please see Figure 1 and Figure 2 To reduce the duration of contact between bodily fluids and the skin, and the contact area between the sanitary napkin and the skin, thereby reducing the probability of skin inflammation such as itching, multiple liquid storage tanks 7 are provided on the side of the absorbent core 1 near the surface layer 2, and the multiple liquid storage tanks 7 are distributed along the width direction of the absorbent core 1.

[0042] When human body excretes fluid onto a sanitary napkin, the fluid on the napkin is quickly absorbed by the surface layer 2 and the absorbent core 1. If the amount of fluid excreted is large, the fluid that is not absorbed in time will flow to the storage tank 7. On the one hand, the storage tank 7 can store excess fluid and reduce leakage. On the other hand, the inner wall of the storage tank 7 is difficult to contact with the skin, reducing the contact area between the sanitary napkin and the skin, and further reducing the probability of skin itching and other inflammations.

[0043] Please see Figure 2 and Figure 3 The absorbent core 1 comprises an upper layer 11, a middle layer 12, and a lower layer 13. The upper layer is a flow-guiding material (flow-guiding non-woven fabric), the middle layer is a barrier material (foamed sponge), and the lower layer 13 is a water-locking material (absorbent paper or polymer material). Multiple capsule strips 14 are disposed between the upper layer 11 and the middle layer 12, distributed along the width of the absorbent core 1. Each capsule strip 14 includes a shell 141, which is made of a biodegradable material and filled with multiple microcapsule particles 142. The shell 141 has a tear-away section 1411 and a protective section 1412 on its side, connected by a mitered thread. A pull cord 1413 is fixedly installed on one side of the tear-away section 1411, extending from one side of the tear-away section 1411 to the other side and protruding from the absorbent core 1.

[0044] The absorbent core 1, with its upper layer 11, middle layer 12, and lower layer 13, efficiently guides and locks in liquid. The upper layer 11 uses a flow-guiding material to help the liquid disperse quickly, the middle layer 12 uses a barrier material to effectively prevent liquid from penetrating upwards, and the lower layer 13 uses a water-locking material to ensure the liquid is firmly locked in. A specially designed capsule strip 14 is located between the upper layer 11 and the middle layer 12. The tear-off section 1411 and the protective section 1412 on the capsule strip 14 are connected by a "tear string," allowing the user to easily tear open the tear-off section 1411 and the protective section 1412 by pressing the protective section 1412 with one hand and pulling the pull string 1413 with the other, releasing the microcapsules from the outer shell 141 and allowing them to quickly react with the absorbed bodily fluids. This design not only improves absorption and ease of use but also features a biodegradable plastic coating, helping to reduce environmental pollution, making it an environmentally friendly and highly efficient absorbent material. It also provides additional absorption and moisture management functions through microcapsules encapsulated in biodegradable plastic.

[0045] Please see Figure 4 and Figure 5 The microcapsule strip 14 has an absorbent paper 143 in the middle, and the microcapsule particles 142 wrap the absorbent paper 143. The absorbent paper 143 enhances the absorbency of the sanitary napkin, and the absorbent paper 143 expands after absorbing water, which can promote the microcapsules to contact the upper layer 11 as soon as possible, thereby reacting with the liquid.

[0046] Existing microencapsulation technologies primarily focus on achieving single functions, such as antibacterial microcapsules, fragrance microcapsules, or deodorizing microcapsules. Their processing mainly involves integrating the microcapsule particles 142 into the sanitary napkin, making them non-replaceable. However, consumers may actually prefer products that can simultaneously fulfill multiple functions, i.e., sanitary napkins containing microcapsules with cross-functional capabilities.

[0047] Please see Figure 2 and Figure 3 To address the aforementioned technical issues, microcapsule strips 14 are located on both sides of the liquid storage tank 7. A chamber 15 for accommodating the microcapsule strips 14 is provided between the upper layer 11 and the lower layer 13. Openings 16 for communicating with the chamber 15 are provided on both the upper layer 11 and the surface layer 2, located on both sides of the microcapsule strips 14. Hooks 144 are formed on both sides of the microcapsule strips 144, and holes 145 are provided on the hooks 144.

[0048] In its initial state, the sanitary napkin contains a microcapsule strip 14. However, depending on the user's experience or their daily needs, the microcapsule strip 14 can be removed from the opening 16. Specifically, a hook made of a hard material such as iron or plastic is used to hook the hole 145 on the hook sleeve 144 at the opening 16. Then, the microcapsule strip 14 is removed from the sanitary napkin. Next, the hook is inserted into the opening 16 from one side and extended from the opening 16 from the other side, hooking the hole 145 on the hook sleeve 144 of the microcapsule strip 14. This pulls the entire microcapsule strip 14 into the sanitary napkin, thus completing the replacement of the sanitary napkin with a microcapsule.

[0049] A microcapsule release method:

[0050] S1. First, open the sanitary napkin, and then take the corresponding microcapsule strip 14 according to your needs;

[0051] S2. As needed, insert the hook strip into the opening 16 and extract the microcapsule strip 14 in the chamber 15;

[0052] S3. Insert the hook strip into the opening 16 on one side and extend it out from the opening 16 on the other side to hook the selected microcapsule strip 14 and pull the microcapsule strip 14 into the cavity 15 of the sanitary napkin.

[0053] S4. Manually press the protective section 1412 on the microcapsule strip 14, and then pull the pull line 1413 on the tear-off section 1411. The pull line 1413 causes the tear-off section 1411 to separate from the protective section 1412, revealing the microcapsules inside the microcapsule strip 14.

[0054] S5. Cover the opening 16, shake the sanitary napkin, tear off the first patch 5 and the second patch 6, and stick the sanitary napkin to the underwear.

[0055] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

Claims

1. A sanitary napkin comprising microcapsules, characterized in that, It includes: Absorbent core (1); Bottom layer (3) fixed on one side of the absorbent core (1); Surface layer (2) adhered to the other side of the absorbent core (1), the surface layer (2) is fixedly connected with the opposite edge of the bottom layer (3); Chamber (15) arranged inside the absorbent core (1); Microcapsule strip (14), the microcapsule strip (14) is located inside the chamber (15); Openings (16) are provided on the bottom layer (3) and the absorbent core (1), the openings (16) are communicated with the chamber (15), the openings (16) are two, respectively located on both sides of the microcapsule strip (14); The microcapsule strip (14) includes a wrapping shell (141), a plurality of microcapsule particles (142) are filled in the wrapping shell (141), and the side of the wrapping shell (141) includes a convenient tearing section (1411) and a protection section (1412); The microcapsule strip (14) is provided with a water absorption paper (143) inside, and the microcapsule particles (142) are distributed on both sides of the water absorption paper (143); The absorbent core (1) includes an upper layer (11), a middle layer (12) and a lower layer (13), the microcapsule strip (14) is located on both sides of the liquid storage groove (7), the chamber (15) for accommodating the microcapsule strip (14) is arranged between the upper layer (11) and the lower layer (13), the openings (16) for communicating the chamber (15) are provided on the upper layer (11) and the surface layer (2) and located on both sides of the microcapsule strip (14), and the hook sleeve (144) is arranged on both sides of the microcapsule strip (14), and the hole (145) is provided on the hook sleeve (144).

2. The sanitary napkin containing microcapsules according to claim 1, characterized by, The convenient tearing section (1411) and the protection section (1412) are cut with an ant line, the convenient tearing section (1411) is fixedly installed with a pull wire (1413) on one side, and the pull wire (1413) extends from one side of the convenient tearing section (1411) to the other side and extends out of the absorbent core (1).

3. The sanitary napkin containing microcapsules according to claim 1, characterized by, The absorbent core (1) is provided with a plurality of liquid storage grooves (7) on the side close to the surface layer (2), and the plurality of liquid storage grooves (7) are distributed along the width direction of the absorbent core (1).

4. The sanitary napkin containing microcapsules according to claim 1, characterized by, The upper layer (11) is a flow guide layer, the middle layer (12) is a barrier layer, and the lower layer (13) is a water locking layer.

5. The sanitary napkin containing microcapsules according to claim 2, characterized by, It also includes a wing (4) arranged on both sides of the bottom layer (3), the side away from the absorbent core (1) of the bottom layer (3) is provided with adhesive, the bottom layer (3) is provided with a first patch (5) covering the adhesive, and the wing (4) is coated with adhesive on one side, and the second patch (6) is arranged at the adhesive.

6. A microcapsule release method of sanitary napkin containing microcapsules, characterized in that, S1, first open the sanitary napkin, and take the corresponding microcapsule strip (14) according to the needs of the user; S2, according to the needs, the hook strip is inserted into the opening (16), and the microcapsule strip (14) in the chamber (15) is extracted; S3, the hook strip is inserted from one side of the opening (16), and the other side of the opening (16) is stretched out, hooks the selected microcapsule strip (14), and pulls the microcapsule strip (14) into the chamber (15) in the sanitary napkin. S4, manually press the protection section (1412) on the microcapsule strip (14), then pull the pull line (1413) on the easy-tear section (1411), the pull line (1413) drives the easy-tear section (1411) to separate from the protection section (1412), and the microcapsules in the microcapsule strip (14) leak out; S5, cover the opening (16), shake the sanitary napkin, tear the first patch (5) and the second patch (6), and paste the sanitary napkin on the underpants.

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