Leakage-proof dry and comfortable sanitary towel
By setting up anti-slip layers on both sides of the sanitary napkins and adopting a multi-layer design core layer, the problems of easy displacement and poor dryness of the existing sanitary napkins are solved, and higher fit and absorption effects are achieved, improving User comfort.
Patent Information
- Application Number
- CN202420533697.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-19
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-03-19
AI Technical Summary
Existing sanitary napkins are prone to displacement and liquid leakage, and the core layer design lacks gradient, resulting in poor dryness and reduced user comfort.
Anti-slip layers are provided on both sides of the sanitary napkin to increase fit with the human body and prevent displacement; a multi-layer core layer is used to allow liquid to absorb to the bottom layer and reduce liquid residue on the surface.
Effectively prevent sanitary napkin from shifting and leaking during use, improve user comfort, and ensure the softness and difficulty of deforming of the product.
Smart Images
Figure CN222487845U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of sanitary products, in particular to a leak-proof and dry sanitary napkin. Background Art
[0002] The common sanitary napkins on the market currently use adhesive backing and wings to fix the sanitary napkins to the underwear. The sanitary napkins are prone to shifting during use and leaking. In order to prevent the sanitary napkins from shifting, most sanitary napkins increase the amount of adhesive backing and wing adhesive to enhance the adhesion between the sanitary napkin and the underwear. However, the increase in the amount of adhesive can easily cause residual adhesive or tearing of the bottom film. In addition, the core layer of the sanitary napkin is made of wood pulp and SAP. The core has no gradient design, and it is difficult to absorb liquid into the bottom layer, resulting in poor dryness, reduced user comfort, and easy deformation. Utility Model Content
[0003] In order to overcome the shortcomings of the prior art, the utility model provides a leak-proof and dry sanitary napkin. Anti-slip layers are arranged on both sides of the sanitary napkin to increase the fit of the sanitary napkin to the human body and prevent the sanitary napkin from shifting during use and causing leakage. The core body adopts a multi-layer design so that the liquid can be absorbed into the bottom layer, reducing the liquid residue on the surface, increasing the user's comfort, and ensuring the softness of the product and preventing it from being deformed.
[0004] The technical solution adopted by the utility model to solve its technical problems is:
[0005] A leak-proof and dry sanitary napkin comprises a water-repellent edge layer, an anti-slip layer, a surface layer, a guide layer, a core layer and a leak-proof bottom layer, wherein the anti-slip layer is arranged on both sides of the water-repellent edge layer, and the core layer comprises a first covering layer, a first core layer, a reinforcement layer, a second core layer and a second covering layer which are arranged in sequence, and the hydrophilicity of the second core layer is greater than that of the first core layer.
[0006] As a further improvement of the above technical solution, the anti-slip layers are arranged in pairs and longitudinally on the water-repellent separation layer.
[0007] As a further improvement of the above technical solution, the length of the anti-slip layer is the same as the length of the water-repellent edge layer.
[0008] As a further improvement of the above technical solution, the anti-slip layer is liquid-coated silicone.
[0009] As a further improvement of the above technical solution, the reinforcement layer is formed by hot pressing of hydrophilic fibers and wood pulp.
[0010] As a further improvement of the above technical solution, the thickness of the reinforcement layer is 0.3-0.5 mm.
[0011] As a further improvement of the above technical solution, the width of the water-repellent barrier layer is 6-12 mm.
[0012] As a further improvement of the above technical solution, the water-repellent edge layer, anti-slip layer, surface layer, guide layer, core layer, anti-leakage bottom layer and envelope layer are compounded in sequence from top to bottom by hot melt adhesive or ultrasonic.
[0013] The beneficial effects of the utility model are as follows: the utility model provides a leak-proof and dry sanitary napkin, which increases the fit between the sanitary napkin and the human body by arranging anti-skid layers on both sides of the sanitary napkin, and prevents the sanitary napkin from shifting during use and causing leakage; the core body adopts a multi-layer design so that the liquid can be absorbed into the bottom layer, reducing the liquid residue on the surface layer, increasing the user's comfort, and ensuring the softness of the product and preventing it from being easily deformed. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0015] Figure 1 It is a cross-sectional view of the leak-proof dry sanitary napkin of the utility model;
[0016] Figure 2 It is a front view of the leak-proof dry sanitary napkin of the utility model.
[0017] Figure numerals: 1. Water-repellent edge layer; 2. Surface layer; 3. Anti-slip layer; 4. Guide layer; 5. First covering layer; 6. First core layer; 7. Reinforcement layer; 8. Second core layer; 9. Second covering layer; 10. Leakage-proof bottom layer; 11. Envelope layer. DETAILED DESCRIPTION
[0018] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the utility model, so as to fully understand the purpose, characteristics and effects of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the utility model. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the fact that according to the specific implementation situation, a better connection structure can be formed by adding or reducing connection accessories. For example, fixed connection / fixed installation can be selected according to the needs of screw connection, bolt connection, pin connection, key connection, bonding, mortise and tenon connection, welding, riveting and other methods. For example, detachable connection can be selected according to the needs of screw connection, bolt connection, threaded connection, snap connection, mortise and tenon connection, Velcro connection and other methods. The various technical features in the creation of the utility model can be combined interactively without conflicting with each other.
[0019] Please refer to Figure 1 , Figure 2 The utility model provides a leak-proof dry sanitary napkin, comprising a water-repellent edge layer 1, an anti-slip layer 3, a surface layer 2, a guide layer 4, a core layer and a leak-proof bottom layer 10, wherein the water-repellent edge layer 1, the anti-slip layer 3, the surface layer 2, the guide layer 4, the core layer, the leak-proof bottom layer 10 and the envelope layer 11 are compounded in sequence from top to bottom by hot melt adhesive or ultrasonic.
[0020] Furthermore, the water-repellent edge layer 1 is a spunlace nonwoven fabric made of cotton fibers through combing, spunlace, debleaching, drying and finishing, and the basis weight of the water-repellent edge layer 1 is in the range of 30-80 gsm.
[0021] In an alternative solution, the water-repellent barrier layer 1 is a hot air nonwoven fabric made by combing and hot air bonding hydrophilic sheath-core bicomponent fibers.
[0022] In an alternative solution, the water-repellent barrier layer 1 is a composite nonwoven fabric formed by spunlaced polyester fibers and wood pulp fibers.
[0023] Furthermore, the anti-skid layer 3 is arranged in pairs and longitudinally on both sides of the water-repellent side layer 1, so as to improve the anti-skid effect of the sanitary napkin, make it fit more closely to the human body, and prevent displacement during use. The length of the anti-skid layer 3 is the same as that of the water-repellent side layer 1, so that the anti-skid layer 3 can cover the entire length of the water-repellent side layer 1, thereby providing better anti-skid and anti-side leakage effects. When liquid flows to both sides of the sanitary napkin, the anti-skid layer 3 can further prevent the liquid from leaking from both sides, thereby reducing the risk of side leakage of the sanitary napkin.
[0024] The anti-slip layer 3 is liquid-coated silica gel, and the basis weight of the anti-slip layer 3 is in the range of 30-100 gsm. This silica gel is scraped on both sides of the water-repellent barrier layer 1 in liquid state, and is heated and formed. The coating is performed by intermittent scraping or continuous scraping. The width of each liquid-coated silica gel is 1-2 mm. In this embodiment, a total of six liquid-coated silica gels are provided, which are evenly distributed on both sides of the sanitary napkin, thereby enhancing the fit between the sanitary napkin and the human body and preventing the napkin from shifting during use.
[0025] In an alternative solution, the anti-slip layers 3 are longitudinally arranged in pairs on both sides of the surface layer 2 .
[0026] Furthermore, the surface layer 2 is a spunlace nonwoven fabric made of cotton fibers through combing, spunlace, debleaching, drying and finishing, and the basis weight of the surface layer 2 is in the range of 18-35 gsm.
[0027] In an alternative solution, the surface layer 2 is a hot air nonwoven fabric made by combing and hot air bonding hydrophilic sheath-core bicomponent fibers.
[0028] In an alternative solution, the surface layer 2 is a spunlace nonwoven fabric made of cellulose fibers through combing, spunlace, debleaching, drying and finishing.
[0029] Furthermore, the guide layer 4 is a hot air nonwoven fabric made of hydrophilic sheath-core bicomponent fibers through combing and hot air bonding, and the basis weight of the guide layer 4 is in the range of 20-60 gsm.
[0030] In an alternative solution, the guide layer 4 is a spunbonded nonwoven fabric or a composite hot air nonwoven fabric.
[0031] Furthermore, the core layer includes a first covering layer 5, a first core layer 6, a reinforcement layer 7, a second core layer 8, and a second covering layer 9, which are arranged in sequence. The hydrophilicity of the second core layer 8 is greater than that of the first core layer 6, and the porosity of the second core layer 8 is greater than that of the first core layer 6. When the liquid is conducted from the surface layer 2 to the core layer through the guide layer 4, due to the step-by-step changes in the hydrophilicity and porosity of the multi-layer material of the core layer, the first core layer 6 can quickly absorb the liquid and conduct it to the second core layer 8 through the reinforcement layer 7, so that the amount of menstrual blood remaining in the surface layer 2 is reduced, thereby improving the dryness of the product and increasing the user's comfortable experience.
[0032] Furthermore, the first covering layer 5 and the second covering layer 9 are both ultra-soft spunbonded non-woven fabrics made by hot-rolling hydrophilic fibers, and the basis weight of the first covering layer 5 is in the range of 7-15 gsm.
[0033] In an alternative solution, the first covering layer 5 and the second covering layer 9 are both hot air nonwoven fabrics made of hydrophilic sheath-core bicomponent fibers through combing and hot air bonding.
[0034] In an alternative solution, the first cover layer 5 and the second cover layer 9 are both wet-strength paper formed by a wet process.
[0035] Furthermore, the first core layer 6 and the second core layer 8 are both cores of wood pulp and SAP blends, and the basis weights of the first core layer 6 and the second core layer 8 are both in the range of 50-100 gsm. Among them, since the first core layer 6 needs to absorb menstrual blood quickly and the second core layer 8 is used to store menstrual blood, the proportion of SAP in the first core layer 6 is less than that in the second core layer 8, and the compaction density of the second core layer 8 is greater than the core density of the first core layer 6.
[0036] Furthermore, the reinforcement layer 7 is formed by online blending of hydrophilic fibers and wood pulp and hot pressing, and the thickness of the reinforcement layer 7 is 0.3-0.5 mm. Since the hydrophilic fibers are hygroscopic, they can absorb surrounding moisture to form a tight bond between the fibers. Therefore, as the moisture is absorbed, the fibers entangle with each other to form a fiber web. The formation of this fiber web makes the core body less likely to deform, increases the breaking strength of the core body, and can better maintain the shape and structure.
[0037] In an alternative solution, the anti-slip layer 3 may also be an anti-adhesive non-woven fabric or a laminated non-woven fabric.
[0038] The sanitary napkin described in this solution is surrounded by a film layer 11 for heat pressing to achieve a full wrapping effect, which wraps the sanitary napkin, prevents external bacteria from invading, has a waterproof effect, and can keep the sanitary napkin dry and cool.
[0039] The utility model discloses a method for preparing a leak-proof dry sanitary napkin, comprising the following steps:
[0040] S1. The water-repellent side layer 1 is cut by a cutting knife, sprayed with glue, and then folded inward by a folding plate, so that the width of the folded water-repellent side layer 1 is 6-12 mm, and then bonded to the surface layer 2 by hot melt glue scraping.
[0041] S2, bonding the anti-slip layer 3 to the water-repellent barrier layer 1 in step S1 after coating and heating and curing, and then bonding the other side of the surface layer 2 to the short-cut guide layer 4 by hot melt adhesive spraying.
[0042] S3, blending wood pulp and SAP, and demoulding the mixture through a cotton core to form a second core layer 8, which is then bonded to the second covering layer 9 and the reinforcement layer 7 through a hot pressing roller.
[0043] S4, blending wood pulp and SAP through cotton core demoulding to form a first core layer 6, and then compounding with the semi-finished product obtained in step S3, and bonding the other end to the first covering layer 5.
[0044] S5, the semi-finished product made in step S4 is bonded with the semi-finished product ⑤ made in step S2 by spraying glue, and then passes through the pressure roller and the smooth roller of the guide layer 4 to form a guide groove.
[0045] S6, combining the semi-finished product formed in step S5 with the anti-leakage bottom layer 10 and the coating layer 11 by spraying glue.
[0046] The above is a specific description of the preferred implementation of the utility model, but the invention of the utility model is not limited to the described embodiments. Technical personnel familiar with the field can also make various equivalent deformations or substitutions without violating the spirit of the utility model. These equivalent deformations or substitutions are all included in the scope defined by the claims of this application.
Claims
1. A leak-proof dry sanitary napkin, characterized in that: It comprises a water-repellent edge layer, an anti-skid layer, a surface layer, a guide layer, a core layer and an anti-leakage bottom layer which are arranged in sequence, wherein the anti-skid layer is arranged on both sides of the water-repellent edge layer, and the core layer comprises a first covering layer, a first core layer, a reinforcement layer, a second core layer and a second covering layer which are arranged in sequence, and the hydrophilicity of the second core layer is greater than that of the first core layer.
2. The leak-proof dry sanitary napkin according to claim 1, characterized in that: The anti-slip layers are arranged in pairs and longitudinally on the water-repellent barrier layer.
3. The leak-proof dry sanitary napkin according to claim 1, characterized in that: The length of the anti-slip layer is the same as that of the water-repellent barrier layer.
4. The leak-proof dry sanitary napkin according to claim 1, characterized in that: The anti-slip layer is made of liquid coated silicone.
5. The leak-proof dry sanitary napkin according to claim 1, characterized in that: The reinforcement layer is formed by hot pressing of hydrophilic fibers and wood pulp.
6. The leak-proof dry sanitary napkin according to claim 1, characterized in that: The thickness of the reinforcement layer is 0.3-0.5 mm.
7. The leak-proof dry sanitary napkin according to claim 1, characterized in that: The width of the water-repellent barrier layer is 6-12 mm.
8. The leak-proof dry sanitary napkin according to claim 1, characterized in that: The water-repellent edge layer, the anti-skid layer, the surface layer, the guide layer, the core layer and the anti-leakage bottom layer are compounded in sequence from top to bottom by hot-melt adhesive or ultrasonic wave.