A medical care pad
By incorporating upper and lower wood pulp paper layers and a cotton core layer into the medical care pad, the problems of liquid backflow and absorbent material misalignment are solved, resulting in more stable liquid absorption and improved user comfort.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING DAKE IND CO LTD
- Filing Date
- 2025-05-14
- Publication Date
- 2026-06-23
AI Technical Summary
Existing medical care pads are prone to backflow and absorbent material misalignment when the liquid load increases, affecting their effectiveness and comfort.
The structure is designed with upper and lower wood pulp paper layers and a cotton core layer. The liquid is first absorbed by the upper wood pulp paper layer and diffused horizontally. Then it is conducted to the deep absorption of the cotton core layer. The buffering and reabsorption mechanism of the upper and lower wood pulp paper layers reduces backflow. At the same time, the lower wood pulp paper layer is tightly bonded to the cast film to fix the cotton core layer and avoid displacement.
It improves the stability and uniformity of liquid absorption in nursing pads, reduces backflow and side leakage risks, and enhances user comfort and product stability.
Smart Images
Figure CN224387693U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of medical device technology, and in particular to a medical care pad. Background Technology
[0002] Most existing medical care pads use the following structure: an upper layer of liquid-permeable non-woven fabric, a middle absorbent core layer (usually a layer of wood pulp cotton blocks), and a lower layer of impermeable cast film (PE film). While this structure has a certain absorbency, it suffers from the following significant drawbacks during use:
[0003] First, the bottom of the cotton core layer is in direct contact with the anti-seepage cast membrane. The anti-seepage cast membrane and non-woven fabric themselves do not have water absorption or liquid guiding effects. If the amount of liquid increases, it will easily lead to liquid accumulation. Then, under high load pressure or repeated compression (such as when the patient turns over or is pressed), the liquid may be squeezed out again, resulting in backflow.
[0004] Secondly, cast film is a smooth and dense waterproof membrane. If the wood pulp cotton block layer is directly placed on the cast film, the fixing effect of the wood pulp cotton block will be poor. This will cause the core layer to be squeezed and misaligned during product transportation, folding and storage. The absorbent material will tend to concentrate on one side, resulting in accumulation or voids, which will affect the product's performance. Utility Model Content
[0005] In order to improve the uniformity of the absorbent core layer of the medical care pad, enhance the liquid absorption stability of the medical care pad, and reduce the occurrence of liquid backflow, this application provides a medical care pad.
[0006] The medical care pad provided in this application adopts the following technical solution:
[0007] A medical care pad includes a cast film, on which a lower wood pulp paper layer is disposed, a cotton core layer is disposed on the lower wood pulp paper layer, an upper wood pulp paper layer is disposed on the cotton core layer, and a non-woven fabric layer is disposed on the upper wood pulp paper layer.
[0008] By adopting the above technical solution, after the liquid passes through the non-woven fabric, it is first absorbed by the upper wood pulp paper layer and spreads rapidly in the horizontal direction, and then conducted to the cotton core layer for deep absorption, thereby keeping the surface of the nursing pad dry for a longer time and improving the comfort of use.
[0009] After the cotton core layer absorbs liquid, when the liquid volume increases or the nursing pad is under pressure (such as when turning over or squeezing), the liquid may seep out from the cotton core layer. At this time, the upper and lower wood pulp paper layers can absorb the seeped liquid again and spread it out, and then the cotton core layer absorbs it back, forming a "buffer-reabsorption" process, which effectively reduces backflow.
[0010] The diffusion effect of the upper wood pulp paper layer helps to distribute the liquid evenly within the cotton core layer, avoiding local saturation caused by the liquid concentrating at one point, thereby further reducing backflow.
[0011] In traditional structures, the fluffy cotton core layer is directly attached to the smooth cast film, which is prone to displacement and clumping during transportation or folding. In this solution, the lower wood pulp paper layer has a compact structure and better stability, making it easier to adhere and fix to the cast film. It also serves as a supporting base for the cotton core layer, further improving its positioning and stability. Therefore, it reduces the likelihood of the cotton core layer's absorbent material shifting to one side during product transportation, folding, and storage, thus affecting the product's performance.
[0012] Optionally, wood pulp paper strips are provided on both sides of the upper wood pulp paper layer along its length.
[0013] By adopting the above technical solution, when the amount of liquid is large during the use of the nursing pad, and the liquid diffuses laterally to both sides in the upper wood pulp paper layer, the wood pulp paper strips can play an auxiliary role in absorption and redispersion.
[0014] On the one hand, the wood pulp paper strips themselves can absorb the liquid flowing laterally, reducing the amount of liquid spilling onto the edge of the nursing pad and reducing the risk of side leakage;
[0015] On the other hand, the re-diffusion effect of the wood pulp paper strips after absorption allows the absorbent material on the sides of the cotton core layer to absorb liquid more evenly. This reduces liquid accumulation on the sides of the cotton core layer, thus lowering the probability of the absorbent material on the sides of the cotton core layer being squeezed out due to local saturation when the pad is compressed due to the user turning over or moving.
[0016] In addition, the stacked design of the wood pulp paper strips creates a microscopic raised structure on both sides of the upper wood pulp paper layer, which, without affecting user comfort, creates a gently sloping edge with a physical barrier effect, further suppressing lateral liquid leakage.
[0017] Optionally, the wood pulp paper strip is disposed between the upper wood pulp paper layer and the nonwoven fabric layer.
[0018] By adopting the above technical solution, during the processing, after the upper wood pulp paper layer is bonded to the cotton core layer, another wood pulp paper strip is pressed together. The setting of the wood pulp paper strip is equivalent to local pressure reinforcement of the edge of the upper wood pulp paper layer, which can make the upper wood pulp paper layer and the cotton core layer more tightly and evenly bonded, and reduce the occurrence of the upper wood pulp paper strip curling up, thereby further reducing the risk of liquid leakage from the gaps on both sides.
[0019] Optionally, the material of the cotton core layer is wood pulp cotton, and the wood pulp cotton contains SAP polymer material.
[0020] By adopting the above technical solution, the cotton core layer and the upper and lower wood pulp paper layers are made of the same material (all of which are wood pulp fiber). This means that in hot pressing, composite or bonding processes, the physical adhesion between the three is stronger, the bonding interface is more uniform and stable, and it is not easy for peeling or gaps to occur due to material differences, thus improving the leak-proof effect.
[0021] SAP polymer material is a material that can rapidly absorb liquid and lock it into a gel-like state, characterized by high absorbency and strong water-locking ability. Introducing SAP polymer material into wood pulp cotton can significantly improve the overall absorbency and water-locking capacity of the nursing pad.
[0022] Optionally, the side of the cast film facing away from the lower wood pulp paper layer is provided with an adhesive, and the cast film is fixed to a support below the cast film by the adhesive.
[0023] By adopting the above technical solution, the adhesive component is placed on the side of the cast film away from the lower wood pulp paper layer (i.e., the bottom of the nursing pad), which can effectively fix the nursing pad to the surface of supporting objects such as bed sheets, wheelchairs, and medical stretchers through adhesive, thus preventing the nursing pad from sliding or shifting during use.
[0024] Optionally, the adhesive is double-sided tape, and there are four adhesives, which are located at the four corners of the cast film.
[0025] Optionally, the cast film is bonded and fixed to the lower wood pulp paper layer, the lower wood pulp paper layer and the wood pulp surface layer, the cotton core layer and the upper wood pulp paper layer, the upper wood pulp paper layer and the wood pulp paper strip, the upper wood pulp paper layer and the nonwoven fabric layer, and the wood pulp paper strip and the nonwoven fabric layer are all bonded and fixed with hot melt adhesive.
[0026] Optionally, the lower wood pulp paper layer is disposed on the cast film. The lower wood pulp paper layer, the cotton core layer, and the upper wood pulp paper layer have the same size. The width of the lower wood pulp paper layer is 5 / 8 to 4 / 5 of the width of the cast film, and the length of the lower wood pulp paper layer is 5 / 6 to 9 / 10 of the length of the cast film.
[0027] In summary, this application includes at least one of the following beneficial technical effects:
[0028] 1. After the liquid passes through the non-woven fabric, it is first absorbed by the upper wood pulp paper layer and spreads rapidly in the horizontal direction, and then conducted to the cotton core layer for deep absorption, thereby keeping the surface of the nursing pad dry for a longer time and improving the comfort of use.
[0029] 2. After the cotton core layer absorbs liquid, when the liquid volume increases or the nursing pad is under pressure (such as when turning over or squeezing), the liquid may seep out from the cotton core layer. At this time, the upper and lower wood pulp paper layers can absorb the seeped liquid again and spread it out. Then, the cotton core layer absorbs it back, forming a "buffer-reabsorption" process. In addition, the diffusion effect of the upper wood pulp paper layer helps to distribute the liquid evenly within the cotton core layer, avoiding the liquid from concentrating at one point and causing local saturation, thereby effectively reducing backflow.
[0030] 3. In traditional structures, the fluffy cotton core layer is directly attached to the smooth cast film, which is prone to displacement and clumping during transportation or folding. In this solution, the lower wood pulp paper layer has a compact structure and better stability, making it easier to adhere and fix to the cast film. It also serves as a supporting base for the cotton core layer, further improving the positioning and stability of the cotton core layer. Therefore, it reduces the occurrence of the cotton core layer absorbing material being squeezed and concentrated on one side during product transportation, folding, and storage, ensuring the product's performance.
[0031] 4. The wood pulp paper strip itself can absorb the liquid flowing laterally, reducing the liquid overflow to the edge of the nursing pad. In addition, during the processing, after the upper wood pulp paper layer is bonded to the cotton core layer, another wood pulp paper strip is pressed on. The setting of the wood pulp paper strip is equivalent to local pressure reinforcement of the edge of the upper wood pulp paper layer, which can make the upper wood pulp paper layer and the cotton core layer more tightly and evenly bonded, and reduce the occurrence of the upper wood pulp paper strip curling up, thereby further reducing the risk of liquid leakage from the gaps on both sides.
[0032] 5. Placing the adhesive on the side of the cast film away from the lower wood pulp paper layer (i.e., the bottom of the nursing pad) allows the nursing pad to be effectively fixed by adhesive when laid on the surface of supporting materials such as bed sheets, wheelchairs, and medical stretchers, preventing the nursing pad from sliding or shifting during use. Attached Figure Description
[0033] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application.
[0034] Figure 2 This is a schematic diagram of the overall structure of Embodiment 2 of this application.
[0035] Explanation of reference numerals in the attached diagram: 1. Cast film; 2. Lower wood pulp paper layer; 3. Cotton core layer; 4. Upper wood pulp paper layer; 5. Wood pulp paper strip; 6. Non-woven fabric; 7. Adhesive component. Detailed Implementation
[0036] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.
[0037] Example 1
[0038] Embodiment 1 of this application discloses a medical care pad.
[0039] like Figure 1 The medical care pad includes a cast film 1, which can be made of PR / PP / PLA, etc. In this embodiment, the material of the cast film 1 is PR.
[0040] A cast film 1 is bonded with a lower wood pulp paper layer 2 by hot melt adhesive. The lower wood pulp paper layer 2 is disposed on the cast film 1. The width of the lower wood pulp paper layer 2 is 5 / 8-4 / 5 of the width of the cast film 1. In this embodiment, the width of the lower wood pulp paper layer 2 is 5 / 6 of the width of the cast film 1. The length of the lower wood pulp paper layer 2 is 5 / 6-9 / 10 of the length of the cast film 1. In this embodiment, the length of the lower wood pulp paper layer 2 is 9 / 10 of the length of the cast film 1.
[0041] The lower wood pulp paper layer 2 is bonded to a cotton core layer 3 via hot melt adhesive. The cotton core layer 3 can be made of wood pulp cotton, SAP superabsorbent polymer, or non-woven fiber, etc. In this embodiment, the cotton core layer 3 is made of wood pulp cotton containing SAP superabsorbent polymer. The cotton core layer 3 is composed of multiple small squares of wood pulp cotton formed by an embossing process. The dimensions of the cotton core layer 3 are the same as and overlap with those of the lower wood pulp paper layer 2.
[0042] The cotton core layer 3 is bonded to the upper wood pulp paper layer 4 by hot melt adhesive. The upper wood pulp paper layer 4 has the same size as the cotton core layer 3 and the two overlap.
[0043] Wood pulp paper strips 5 are glued and pressed onto both sides of the upper wood pulp paper layer 4, which are opposite to the cotton core layer 3, along its length direction using hot melt adhesive. The width of the wood pulp paper strips 5 is 1 / 12 of the width of the upper wood pulp paper layer 4. In other embodiments, the wood pulp paper strips 5 may also be disposed between the upper wood pulp paper layer 4 and the cotton core layer 3.
[0044] The upper wood pulp paper layer 4 and the wood pulp paper strip 5 are bonded together with non-woven fabric 6 by hot melt adhesive. The size of non-woven fabric 6 is the same as that of cast film 1 and the two overlap.
[0045] The implementation principle of this application embodiment is as follows: after the liquid passes through the non-woven fabric 6, it is first absorbed by the upper wood pulp paper layer 4 and spreads rapidly in the horizontal direction, and then conducted to the cotton core layer 3 for deep absorption, so that the use surface of the nursing pad stays dry for a longer time and improves the comfort of use.
[0046] After the cotton core layer 3 absorbs liquid, when the liquid volume increases or the nursing pad is under pressure (such as turning over or squeezing), the liquid may seep out from the cotton core layer 3. At this time, the upper and lower wood pulp paper layers 2 can absorb the seeped liquid again and spread it out, and then the cotton core layer 3 will absorb it back, forming a "buffer-reabsorption" process, which effectively reduces backflow.
[0047] The diffusion effect of the upper wood pulp paper layer 4 helps to distribute the liquid evenly within the cotton core layer 3, avoiding local saturation caused by the liquid concentrating at one point, thereby further reducing the phenomenon of backflow.
[0048] In traditional structures, the fluffy cotton core layer 3 is directly attached to the smooth cast film 1, which is prone to displacement and clumping during transportation or folding. In this solution, the lower wood pulp paper layer 2 has a compact structure and better stability, making it easier to adhere and fix to the cast film 1. It also serves as a supporting base for the cotton core layer 3, further improving the positioning and stability of the cotton core layer 3. Therefore, it reduces the occurrence of the cotton core layer 3 absorbing material being squeezed and concentrated on one side during product transportation, folding, and storage, ensuring the product's performance.
[0049] Example 2
[0050] Reference Figure 2 The difference between this embodiment and Embodiment 1 is that an adhesive element 7 is provided on the side of the cast film 1 facing away from the lower wood pulp paper layer 2, and the cast film 1 is fixed to the support below the cast film 1 by the adhesive element 7. The adhesive element 7 can be double-sided tape / medical plaster / adhesive peelable film, etc.
[0051] In this embodiment, the adhesive 7 is a double-sided adhesive, and there are four adhesive 7s, which are located at the four corners of the cast film 1.
[0052] The implementation principle of Example 2 is as follows: the adhesive 7 is placed on the side of the cast film 1 away from the lower wood pulp paper layer 2 (i.e. the bottom of the nursing pad), which can effectively fix the nursing pad on the surface of the support such as bed sheet, wheelchair, medical stretcher, etc. by adhesive, and prevent the nursing pad from sliding or shifting during use.
[0053] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A medical care pad, characterized in that: It includes a cast film (1), on which a lower wood pulp paper layer (2) is disposed, on which a cotton core layer (3) is disposed, on which an upper wood pulp paper layer (4) is disposed, and on which a non-woven fabric (6) layer is disposed; Wood pulp paper strips (5) are provided on both sides of the upper wood pulp paper layer (4) along its length direction; The wood pulp paper strip (5) is disposed between the upper wood pulp paper layer (4) and the nonwoven fabric layer (6).
2. The medical care pad according to claim 1, characterized in that: The material of the cotton core layer (3) is wood pulp cotton, and the wood pulp cotton contains SAP polymer material.
3. The medical care pad according to claim 1, characterized in that: The cast film (1) has an adhesive (7) on the side facing away from the lower wood pulp paper layer (2), and the cast film (1) is fixed to the support below the cast film (1) by the adhesive (7).
4. The medical care pad according to claim 3, characterized in that: The adhesive (7) is a double-sided adhesive, and there are four adhesives (7), which are located at the four corners of the cast film (1).
5. The medical care pad according to claim 1, characterized in that: The cast film (1) and the lower wood pulp paper layer (2), the lower wood pulp paper layer (2) and the cotton core layer (3), the cotton core layer (3) and the upper wood pulp paper layer (4), the upper wood pulp paper layer (4) and the wood pulp paper strip (5), the upper wood pulp paper layer (4) and the nonwoven fabric (6) layer, and the wood pulp paper strip (5) and the nonwoven fabric (6) layer are all bonded and fixed with hot melt adhesive.
6. The medical care pad according to claim 2, characterized in that: The lower wood pulp paper layer (2) is centrally located on the cast film (1). The lower wood pulp paper layer (2), the cotton core layer (3), and the upper wood pulp paper layer (4) have the same dimensions. The width of the lower wood pulp paper layer (2) is 5 / 8 to 4 / 5 of the width of the cast film (1), and the length of the lower wood pulp paper layer (2) is 5 / 6 to 9 / 10 of the length of the cast film (1).