Sanitary napkin for daily use
By using metal sulfide adsorbents to adsorb and convert Hg0 from flue gas and Hg2+ from waste liquid into stable mercury sulfide compounds, the challenges of removing elemental and oxidized mercury in existing technologies are addressed, achieving efficient and cost-effective mercury removal.
Patent Information
- Application Number
- CN202420072370.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-12
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-01-12
AI Technical Summary
Existing sanitary napkins fail to efficiently absorb and absorb elemental mercury (Hg0) from flue gas and oxidized mercury (Hg2+ from waste liquid, with activated carbon injection technology being costly and its mercury removal efficiency is affected by NOx and SO2.
Utilization of metal sulfides (e.g., FeS2, CuS, CuFeS2) as mercury removal adsorbents, which contact with flue gas and waste liquid, adsorbing and converting Hg0 from flue gas and Hg2+ from waste liquid into stable mercury sulfide compounds.
Achieves efficient, cost-effective, and environmentally friendly simultaneous removal of Hg0 from flue gas and Hg2+ from waste liquid, avoiding secondary pollution and reducing operational costs.
Smart Images
Figure CN222130394U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of sanitary napkins, in particular to a daily sanitary napkin. Background Art
[0002] Sanitary napkins can be divided into night sanitary napkins and day sanitary napkins. Night sanitary napkins are usually longer and wider than day sanitary napkins, providing more three-dimensional protection to prevent leakage when turning over or sleeping on the side at night. Day sanitary napkins are usually required to be lighter and thinner to facilitate the user's daytime movements.
[0003] In order to ensure the amount of water absorbed, daily sanitary napkins are usually filled with fluff pulp and water-locking polymer particles. Although the water-locking polymer particles absorb a large amount of water, they swell after absorbing water, causing the daily sanitary napkin to become thicker overall and no longer thin, which affects the user's movement, especially when used outdoors where it is inconvenient to change sanitary napkins, increasing discomfort and requiring improvement. Utility Model Content
[0004] The utility model aims to provide a daily sanitary napkin to improve daily comfort and ensure water absorption effect.
[0005] To achieve this purpose, the utility model adopts the following technical solutions:
[0006] A daily sanitary napkin comprises: a bottom layer, a surface layer, a guide layer, a fluff pulp layer and a guide strip, wherein the fluff pulp layer, the guide layer and the surface layer are arranged in sequence above the bottom layer from bottom to top, the fluff pulp layer comprises a first fluff pulp sheet and a second fluff pulp sheet, the second fluff pulp sheet is arranged at one end of the first fluff pulp sheet, the top surface of the second fluff pulp sheet is locally sprayed with water-locking polymer particles, the first fluff pulp sheet is provided with grooves pointing to the second fluff pulp sheet at intervals, the guide strip is arranged in the grooves and extends to the spraying area of the water-locking polymer particles.
[0007] Wherein, the water-locking polymer particles are sodium polyacrylate resin particles.
[0008] Wherein, a water-locking layer is arranged between the fluff pulp layer and the guide layer.
[0009] Wherein, the water-locking layer adopts instant drying paper.
[0010] Wherein, the guide strip and the guide layer are respectively made of hot air non-woven fabric.
[0011] Wherein, a circle of water-repellent non-woven fabric connected to the surface of the bottom layer is arranged at the edge of the surface layer.
[0012] Wherein, the surface layer is made of pure cotton non-woven fabric.
[0013] The beneficial effects of the utility model include: a daily sanitary napkin, in which water-locking polymer particles are sprayed on a second fluff pulp sheet at one end of the first fluff pulp sheet, and a guide strip is used to guide most of the water in the first fluff pulp sheet to the water-locking polymer particles, so as to keep the first fluff pulp sheet as light and thin as possible, and ensure the water absorption amount by the water-locking polymer particles. After absorbing water, the water-locking polymer particles expand on the second fluff pulp sheet, and the second fluff pulp sheet is positioned forward and not in the middle of the user's legs, thereby reducing the impact on the movement and making it more comfortable to use. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION
[0015] Combine the following Figure 1 The technical solution of the utility model is further illustrated by specific embodiments.
[0016] like Figure 1 The daily sanitary napkin shown includes: a bottom layer 1, a surface layer 2, a guide layer 9, a fluff pulp layer and a guide strip 8. The fluff pulp layer, the guide layer 9 and the surface layer 2 are arranged above the bottom layer 1 in order from bottom to top. The edge of the surface layer 2 is provided with a circle of water-repellent non-woven fabric 3 connected to the surface of the bottom layer 1. The water-repellent non-woven fabric 3 can be pressed and waterproofed by hot pressing at the edge of the surface layer 2 to avoid the problem of side leakage.
[0017] In this embodiment, the surface layer 2 is made of pure cotton non-woven fabric, which is soft to the body, comfortable to wear, and reduces allergy problems.
[0018] like Figure 1 As shown, the fluff pulp layer includes a first fluff pulp sheet 5 and a second fluff pulp sheet 7. The second fluff pulp sheet 7 is arranged at one end of the first fluff pulp sheet 5. The first fluff pulp sheet 5 is generally located in the middle of the sanitary napkin, and the second fluff pulp sheet 7 is closer to the front end of the sanitary napkin.
[0019] The top surface of the second fluff pulp sheet 7 is partially sprayed with water-locking polymer particles 6. In this embodiment, the water-locking polymer particles 6 are evenly distributed in a circular area. The first fluff pulp sheet 5 is provided with grooves pointing to the second fluff pulp sheet 7 at intervals. The guide strip 8 is arranged in the groove and extends to the spraying area of the water-locking polymer particles 6. The guide strip 8 and the guide layer 9 are respectively made of hot air non-woven fabrics to conduct water in a three-dimensional manner, and the effect is good.
[0020] Most of the water in the first fluff pulp sheet 5 is guided to the water-locking polymer particles 6 through the guide strips 8, so as to keep the first fluff pulp sheet 5 as light and thin as possible, and ensure the water absorption through the water-locking polymer particles 6, thereby extending the comfortable use time during the day.
[0021] In this embodiment, the water-locking polymer particles 6 are sodium polyacrylate resin particles with a large water absorption capacity. After absorbing water, the water-locking polymer particles 6 expand on the second fluff pulp sheet 7, away from the central area where the first fluff pulp sheet 5 is located. The second fluff pulp sheet 7 is located forward and not in the middle of the user's legs, which reduces the impact on the movement and is more comfortable to use.
[0022] A water-locking layer 4 is provided between the fluff pulp layer and the guide layer 9. The water-locking layer 4 adopts instantaneous drying paper to guide the moisture in the guide layer 9 into the fluff pulp layer, and effectively prevents the reverse osmosis of the moisture in the fluff pulp layer, thereby ensuring the dryness and comfort of the surface layer 2.
[0023] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.
Claims
1. A daily sanitary napkin, characterized in that: include: A bottom layer, a surface layer, a guide layer, a fluff pulp layer and a guide strip, wherein the fluff pulp layer, the guide layer and the surface layer are arranged in sequence above the bottom layer from bottom to top, the fluff pulp layer comprises a first fluff pulp sheet and a second fluff pulp sheet, the second fluff pulp sheet is arranged at one end of the first fluff pulp sheet, the top surface of the second fluff pulp sheet is locally sprayed with water-locking polymer particles, the first fluff pulp sheet is provided with grooves pointing to the second fluff pulp sheet at intervals, the guide strip is arranged in the grooves and extends to the spraying area of the water-locking polymer particles.
2. The sanitary napkin according to claim 1, characterized in that: The water-locking polymer particles are sodium polyacrylate resin particles.
3. The sanitary napkin according to claim 1, characterized in that: A water-locking layer is arranged between the fluff pulp layer and the guide layer.
4. The sanitary napkin according to claim 3, characterized in that: The water-locking layer adopts instant drying paper.
5. The sanitary napkin according to claim 1, characterized in that: The guide strip and the guide layer are made of hot air non-woven fabrics respectively.
6. The sanitary napkin according to claim 1, characterized in that: The edge of the surface layer is provided with a circle of water-repellent non-woven fabric connected to the surface of the bottom layer.
7. The sanitary napkin according to claim 1, characterized in that: The surface layer is made of pure cotton non-woven fabric.