A diaper absorbent core with self-contained guide groove
By designing a structure with a guide groove in the diaper absorbing core, combined with the folding and upturning design of the guide layer and the absorbing layer with high liquid absorption speed, the problem of poor flow diversion effect of the existing absorbing core is solved, and the uniform absorption of liquid and the improvement of the flow diversion effect is achieved.
Patent Information
- Application Number
- CN202421139546.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-05-23
AI Technical Summary
The existing diaper absorbent core is compacted during the extrusion and composite process, resulting in a general diversion effect, and the liquid infiltration and front-back diversion effects are affected, which cannot effectively improve the liquid absorption speed and uniform liquid absorption.
A diaper absorbent core with its own guide groove is designed, including an absorbing layer and a guide layer. The guide layer is laid on the absorbing layer in the front and rear directions. The left and right sides of the absorbing layer are folded and merged to form a guide groove. The left and right sides of the guide layer are winded to form a retracting strip, the absorbing layer is coated to form a protrusion, and the liquid resist layer is bonded to the outer side of the protrusion.
Through the high liquid absorption speed of the diversion layer and the design of the diversion groove, the liquid is uniformly absorbed from the inside to the outside, which improves the liquid absorption speed and diversion effect, reduces the immersion of the liquid on the baby's butt, and avoids moisture and side leakage.
Smart Images
Figure CN222708577U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of disposable absorbent cores, in particular to a diaper absorbent core with a guide groove. Background Art
[0002] Infant diapers absorb liquid through the absorbent core. Currently, most absorbent cores are compounded with absorbent materials to form a flat surface. The absorbent core is extruded and compounded with the surface layer and the bottom layer. The absorbent core is further compacted during the extrusion, so even if the guide grooves are pressed out on the surface layer and the absorbent core during compounding, the guide effect is average. Because the inside of the absorbent core is compacted and the gap is small, the effect of liquid infiltration and front-to-back guide is affected.
[0003] Therefore, in order to improve the drainage and liquid absorption effect of the absorbent core to alleviate the soaking of the baby's buttocks, this case was created. Utility Model Content
[0004] Therefore, in view of the above problems, the utility model proposes a diaper absorbent core with a guide groove which improves the liquid conduction speed and absorbs liquid from the inside to the outside to keep the surface of the diaper dry.
[0005] In order to solve the above technical problems, the solution adopted by the utility model is: a diaper absorbent core with a guide groove, including an absorption layer and a guide layer with a liquid absorption speed faster than the absorption layer, the guide layer is laid on the middle part of the upper surface of the absorption layer along the front-to-back direction, the left and right sides of the absorption layer are folded upward and overlapped to the upper surface of the guide layer, and a guide groove exposing the guide layer is formed between the left and right ends of the absorption layer and the guide layer.
[0006] A further improvement is that the left and right sides of the guide layer are respectively rolled up to form rolling strips higher than the upper surface of the guide layer, and the left and right sides of the absorption layer are laminated to the upper surface of the guide layer along the contour of the rolling strips to form a protrusion higher than the surface of the absorption layer.
[0007] A further improvement is that a liquid blocking layer is bonded to the outer surface of the protrusion, the lower edge of the liquid blocking layer extends to the left and right ends of the lower surface of the absorption layer, and the upper edge of the liquid blocking layer extends to the highest point of the protrusion.
[0008] A further improvement is that the liquid-blocking layer is a water-repellent nonwoven fabric or a water-repellent plastic film.
[0009] A further improvement is that the thickness of the guide layer is 2-5 mm.
[0010] A further improvement is that the guide layer is made of pure cotton.
[0011] A further improvement is that the absorption layer comprises an upper non-woven fabric layer, a polymer water-absorbing particle fiber layer, and a lower non-woven fabric layer which are arranged in sequence from top to bottom.
[0012] By adopting the above technical solution, the beneficial effects of the utility model are:
[0013] In this case, the guide layer is wrapped inside the absorption layer, and guide grooves are formed between the left and right sides of the guide layer and the guide layer to expose the guide layer. The liquid absorption speed of the guide layer is higher than that of the absorption layer. Under the guidance and absorption of the guide layer, the liquid penetrates along the inside of the guide layer to the surroundings. After the guide layer absorbs the liquid, the absorption layer absorbs the reverse osmosis liquid on the guide layer, so that the absorption core of this case absorbs the liquid from the inside to the outside, which is conducive to the uniform absorption of the liquid, improves the wearing comfort of the diaper after the absorption of the liquid, and avoids the dampness caused by the slow absorption of the liquid on the surface of the absorption core, reduces the soaking of the baby's buttocks by urine, and avoids the baby's red buttocks.
[0014] A further beneficial effect is that after the absorbent layer is covered by the rolling strips formed by rolling up the left and right sides of the guide layer, convex parts are formed at both ends of the absorbent layer, which can prevent liquid from flowing out of the absorbent core laterally to avoid liquid leakage.
[0015] A further beneficial effect is that a liquid-blocking layer is laminated to the outside of the raised portion. Generally, the surface layer of the diaper covers the absorbent core and is laminated to the bottom layer. The raised portion of the raised portion is covered by the surface layer. The raised portion can prevent liquid from flowing to the outside of the absorbent core. However, after the raised portion is fully absorbed by the liquid, penetration may still occur, which increases the risk of lateral leakage of the diaper. Therefore, in this case, a liquid-blocking layer is also coated on the outer side of the raised portion to further prevent side leakage of the diaper. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the internal structure of a diaper absorbent core with a guide groove according to an embodiment of the utility model.
[0017] Figure 2 yes Figure 1 A magnified view of the local structure at point A. DETAILED DESCRIPTION
[0018] The utility model is now further described in conjunction with the accompanying drawings and specific embodiments.
[0019] refer to Figure 1 and Figure 2The utility model discloses a diaper absorbent core with a guide groove 12, including an absorbent layer 10 for absorbing liquid, and a guide layer 11 with a faster liquid absorption speed than the absorbent layer 10. The guide layer 11 is laid on the middle of the upper surface of the absorbent layer 10 along the front-to-back direction, and the left and right sides of the absorbent layer 10 are folded upward and laminated to the upper surface of the guide layer 11. The guide groove 12 is formed between the left and right ends of the absorbent layer 10 and the guide layer 11 to expose the guide layer 11 to improve the liquid absorption and diversion effect. The guide layer 11 can accelerate the forward and backward diversion of liquid and make the absorbent core absorb liquid from the inside to the outside.
[0020] The left and right sides of the guide layer 11 are respectively rolled up to form rolling strips 13 higher than the upper surface of the guide layer 11, and the left and right sides of the absorption layer 10 are overlapped to the upper surface of the guide layer 11 along the contour of the rolling strips 13 to form a protrusion 14 higher than the surface of the absorption layer 10. The protrusion 14 can prevent liquid from flowing out of the outside of the absorption core to avoid liquid leakage.
[0021] A liquid-blocking layer 15 is attached to the outer surface of the protrusion 14 to prevent liquid leakage. The lower edge of the liquid-blocking layer 15 is extended to the left and right ends of the lower surface of the absorbent layer 10, and the upper edge of the liquid-blocking layer 15 extends to the highest point of the protrusion 14. The liquid-blocking layer 15 is a water-repellent nonwoven fabric or a water-repellent plastic film, which is glued to the outer surface of the absorbent layer 10.
[0022] The guide layer 11 has a thickness of 2-5 mm, preferably 3 mm. The guide layer 11 is made of pure cotton. The absorption layer 10 includes an upper non-woven fabric layer 101, a polymer water-absorbing particle fiber layer 102, and a lower non-woven fabric layer 103 arranged in sequence from top to bottom. The upper non-woven fabric layer 101 and the lower non-woven fabric layer 103 are non-cotton spunlace non-woven fabrics.
[0023] The basic principles, main features and advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which shall fall within the scope of the utility model to be protected. The scope of protection of the utility model shall be defined by the attached claims and their equivalents.
Claims
1. A diaper absorbent core with a guide groove, characterized in that: It includes an absorption layer and a guide layer with a liquid absorption speed faster than that of the absorption layer. The guide layer is laid on the middle part of the upper surface of the absorption layer along the front-to-back direction. The left and right sides of the absorption layer are folded upward and overlapped to the upper surface of the guide layer. A guide groove exposing the guide layer is formed between the left and right ends of the absorption layer and the guide layer.
2. A diaper absorbent core with a guide groove according to claim 1, characterized in that: The left and right sides of the guide layer are respectively rolled up to form rolling strips higher than the upper surface of the guide layer, and the left and right sides of the absorption layer are laminated to the upper surface of the guide layer along the contour of the rolling strips to form a bulge higher than the surface of the absorption layer.
3. The diaper absorbent core with a guide groove according to claim 2, characterized in that: A liquid-blocking layer is bonded to the outer surface of the protrusion, the lower edge of the liquid-blocking layer is extended to the left and right ends of the lower surface of the absorption layer, and the upper edge of the liquid-blocking layer is extended to the highest point of the protrusion.
4. A diaper absorbent core with a guide groove according to claim 3, characterized in that: The liquid-blocking layer is a water-repellent nonwoven fabric or a water-repellent plastic film.
5. A diaper absorbent core with a guide groove according to claim 1, 2, 3 or 4, characterized in that: The thickness of the guide layer is 2-5 mm.
6. The diaper absorbent core with a guide groove according to claim 5, characterized in that: The material of the guide layer is pure cotton.
7. A diaper absorbent core with a guide groove according to claim 1, 2, 3 or 4, characterized in that: The absorption layer comprises an upper non-woven fabric layer, a high molecular water-absorbing particle fiber layer, and a lower non-woven fabric layer which are sequentially arranged from top to bottom.