Hygienic product
By using waterproof, absorbent, and cover components made entirely of recyclable plastic and employing high-frequency welding technology, the problem of inconvenient recycling of hygiene products has been solved, achieving a balance between easy recycling and effective absorption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KNH ENTERPRISE CO LTD
- Filing Date
- 2025-01-23
- Publication Date
- 2026-05-01
AI Technical Summary
Existing hygiene products are inconvenient to recycle and dispose of due to the use of non-recyclable polymer materials, and it is also difficult to maintain good absorption.
Waterproof, absorbent, and cover components made entirely of recyclable plastic are fixed together using high-frequency welding technology to form a sanitary product structure that is easy to recycle.
This makes hygiene products easier to recycle, reduces the difficulty of recycling and sorting, and maintains good absorbency.
Smart Images

Figure CN224179882U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a sanitary product, and more particularly to a sanitary product for absorbing liquids. Background Technology
[0002] Sanitary products are essential for women during their menstrual period. Early sanitary products were mostly made of natural fibers for the absorbent part. However, in order to achieve better absorption and reduce overall weight, they have gradually moved towards blending chemical fibers with natural fibers, and even adding super absorbent polymers (SAP) to improve absorbency and reduce weight.
[0003] For example, US Patent Publication No. US20230381032A1 describes an absorption structure composed of polymer fibers, cellulose fibers, and superabsorbent polymers (SAP). By adding superabsorbent polymers to cellulose fibers, the absorption of liquids is increased, and then polymer fibers are covered on the outermost layer to maintain the stability of the overall absorption structure.
[0004] As can be seen from the foregoing description, although current hygiene products can improve the shortcomings of poor absorbency when using natural fibers as absorbents, the absorbent structure is composed of different recyclable and non-recyclable polymer materials (e.g., composed of at least two of polyethylene, polypropylene, and cellulose), which causes inconvenience in recycling and sorting.
[0005] Therefore, how to make hygiene products easy to recycle while achieving good absorption is a very important issue in this field. Utility Model Content
[0006] The purpose of this invention is to provide a sanitary product that is easy to recycle.
[0007] Therefore, the sanitary product of this utility model includes a main body unit.
[0008] The main body unit includes a waterproof component, an absorbent component, and a cover component.
[0009] The waterproof component is made of a single type of recyclable plastic.
[0010] The absorbent element is located on the surface of the waterproof element and has at least one absorbent layer, wherein the absorbent layer has an absorbent body made of a single recyclable plastic.
[0011] The cover at least covers the absorbent and has a covering layer attached to the surface of the waterproofing element and made of a single recyclable plastic.
[0012] Preferably, in the sanitary product of this utility model, the covering is selected from woven or non-woven fabric.
[0013] Preferably, in the sanitary product of this utility model, the absorbent body is selected from one of woven fabric, non-woven fabric, and foam.
[0014] Preferably, in the sanitary product of this invention, the covering member further has a plurality of grooves formed downward from the surface of the covering layer opposite to the surface of the waterproof member.
[0015] Preferably, the sanitary product of this utility model further includes a packaging component made of the single recyclable plastic and directly welded to define a containing space, and the main body unit is contained in the containing space.
[0016] Preferably, in the sanitary product of this utility model, the waterproof component, the absorbent body, and the cover are made of the same recyclable plastic, and the periphery of the cover is directly fused to the waterproof component, so that the absorbent component is completely covered between the cover and the waterproof component.
[0017] Preferably, the sanitary product of this invention further includes an adhesive unit located on the other surface of the waterproof member opposite to the cover.
[0018] The beneficial effect of this utility model is that by selecting the waterproof component, the absorbent body, and the cover component of the main body unit from a single type of recyclable plastic, the recycling efficiency is achieved. Attached Figure Description
[0019] Figure 1 This is a top view showing an embodiment of the sanitary product of this utility model;
[0020] Figure 2 This is a side sectional view; additional explanation needed. Figure 1 Examples shown;
[0021] Figure 3 This is a schematic diagram illustrating the embodiment of the main body unit located in the packaging. Detailed Implementation
[0022] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0023] Before this utility model is described in detail, it should be noted that similar elements are represented by the same reference numerals in the following description.
[0024] The relevant technical content, features, and effects of this utility model will be clearly presented in the following detailed description of the embodiments with reference to the accompanying drawings. Furthermore, it should be noted that the drawings of this utility model are only for illustrating the structural and / or positional relationships between components and are not related to the actual dimensions of each component.
[0025] The "same type" or "single type" of recyclable plastic mentioned in the embodiments of this utility model is defined as the Resin Identification Code (RIC) advocated by the Society of the Plastics Industry (SPI). The code graphic is a triangle composed of arrows that circle the number clockwise, such as number 1 representing polyethylene terephthalate (PET). The "same type" or "single type" of recyclable plastic mentioned in the embodiments refers to plastic types with the same number in the above standard.
[0026] See Figures 1 to 3 An embodiment of the sanitary product of this utility model includes a body unit 2, an adhesive unit 3, and a packaging component 4.
[0027] The main body unit 2 includes a waterproof component 21, an absorbent component 22, and a covering component 23.
[0028] The waterproof component 21 is made of the same type of recyclable plastic.
[0029] Specifically, the waterproof component 21 has a wing-shaped structure, having a central portion 211 and winglets 212 extending symmetrically from both sides of the central portion 211. The winglets 212 and the central portion 211 are made of the same material.
[0030] In some embodiments, the recyclable plastic constituting the waterproof component 21 may be a recyclable plastic with breathable properties.
[0031] In some embodiments, the recyclable plastic constituting the waterproof element 21 may be a recyclable plastic with or without breathable properties. Furthermore, when the recyclable plastic is not breathable, the waterproof element 21 may also include at least one perforation (not shown) penetrating the intermediate portion 211, thereby improving the breathability of the waterproof element 21.
[0032] The absorbent element 22 is located on the surface of the intermediate portion 211 and can be composed of one or more absorbent layers, wherein the absorbent layer has an absorbent body made of the same type of recyclable plastic. This embodiment is illustrated by the example of the absorbent element 22 having multiple absorbent layers stacked on the surface of the intermediate portion 211, but in actual implementation, it is not limited to this.
[0033] The absorbent body is one of woven fabric, non-woven fabric, and foam, and when the absorbent body is woven fabric or non-woven fabric, the fiber thickness of any absorbent layer can be the same or different.
[0034] In some implementations, at least a portion of the absorbent layer may also have a hydrophilic absorbent additive selected from at least one of hydrophilic softeners, hydrophilic modifiers, and hydrophilic finishing agents.
[0035] The cover 23 at least covers the absorbent 22, and has a cover layer 231 made of the same type of recyclable plastic and attached to the surface of the waterproof component 21, and a plurality of grooves 232 formed downward from the surface of the cover layer 231 opposite to the surface of the waterproof component 21. The grooves 232 can be embossed according to a predetermined pattern. This embodiment uses a floral pattern as an example, but it is not used as an example. The cover 23 is selected from woven or non-woven fabric.
[0036] In this embodiment, the cover 23 and the waterproof component 21 are directly welded together by high-frequency welding, so that the periphery of the cover 23 and the waterproof component 21 are directly welded together, and the absorbent component 22 is completely covered between the cover 23 and the waterproof component 21.
[0037] Preferably, the surfaces of the absorbent element 22 and the waterproof element 21 that come into contact with each other are also welded together using a high-frequency welding method.
[0038] The adhesive unit 3 is located on the opposite surface of the waterproof component 21 to the cover 23, and is used to bond the waterproof component 21 to an environmental element (not shown, such as clothing). The adhesive unit 3 can consist of one or more adhesive elements 31. This invention is based on the example of the adhesive unit 3 having three adhesive elements 31, but is not limited thereto.
[0039] Specifically, the adhesive 31 is located on the other surface of the two flaps 212 and the middle portion 211 opposite to the absorbent 22.
[0040] In some embodiments, the adhesive unit 3 may be made of the same material as the body unit 2.
[0041] The packaging 4 is made of the same type of recyclable plastic and defines a containing space for the main body unit 2. Specifically, a planar substrate made of the recyclable plastic is first used, the main body unit 2 is placed on the substrate, and then the substrate is partially welded using high-frequency welding to obtain the packaging 4 that seals the main body unit 2 within the containing space.
[0042] The recyclable plastic is selected from either polyolefins (such as PE and PP) or polyesters (such as PET).
[0043] Preferably, the packaging 4 is made of the same recyclable plastic as the cover 23.
[0044] More preferably, in order to facilitate recycling and provide recycling convenience, the waterproof component 21, the absorbent body, and the cover 23 are made of the same recyclable plastic.
[0045] Furthermore, the packaging 4, the waterproof component 21, the absorbent body, and the cover 23 are all made of the same recyclable plastic.
[0046] In summary, the sanitary products of this utility model reduce the difficulty of waste disposal by using the same recyclable plastic as the raw material for the membrane layers with the same function. In addition, the waterproof component 21, the absorbent body, and the cover component 23 are all made of the same recyclable plastic and are joined by high-frequency welding without the need for additional adhesives, further reducing the sorting and processing procedures during recycling. Therefore, the purpose of this utility model can indeed be achieved.
[0047] The above description is merely an embodiment of this utility model and should not be construed as limiting the scope of this utility model. Any simple equivalent changes and modifications made in accordance with the claims and description of this utility model shall still fall within the scope of this utility model.
Claims
1. A hygiene product, characterized in that, The hygiene product includes a body unit. The body unit includes: Waterproof components are made from a single type of recyclable plastic. An absorbent element, located on the surface of the waterproof element, has at least one absorbent layer, and the absorbent layer has an absorbent body made of a single type of recyclable plastic, and A cover, at least covering the absorbent, having a cover layer attached to the surface of the waterproofing element and made of a single recyclable plastic.
2. The sanitary product according to claim 1, characterized in that, The cover is selected from woven or nonwoven fabric.
3. The sanitary article according to claim 1, characterized in that The absorbent material is selected from woven fabric, non-woven fabric, and foam.
4. The sanitary product according to claim 1, characterized in that, The cover also has a plurality of grooves formed downward from the surface of the cover layer opposite to the surface of the waterproofing element.
5. The sanitary article according to claim 1, characterized in that The hygiene product also includes a package made of the single recyclable plastic and directly welded to define a containing space, and the body unit is contained in the containing space.
6. The sanitary product according to claim 1, characterized in that, The waterproof component, the absorbent body, and the cover are made of the same recyclable plastic, and the periphery of the cover is directly fused to the waterproof component, completely enclosing the absorbent component between the cover and the waterproof component.
7. The sanitary product according to claim 1, characterized in that, The sanitary product also includes an adhesive unit located on the opposite surface of the waterproof component to the cover.
Citation Information
Patent Citations
Absorbent article
US20230381032A1