Bandage with adhesive layer
By optimizing the structure of the bandage by designing an isolation layer, an absorbent layer, and an adhesive layer, the problems of the bandage's inability to adhere itself and its low liquid absorption efficiency were solved, achieving efficient liquid absorption and stable bandaging at joints.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BIOADAPTIVE ADVANCED MATERIALS LLC
- Filing Date
- 2025-01-13
- Publication Date
- 2026-06-30
AI Technical Summary
Existing bandages cannot adhere to the skin on their own, and adding an adhesive layer affects the efficiency of fluid absorption, especially when bandaging joints, making them unstable.
Design a bandage with an adhesive layer, including an isolation layer, an absorbent layer and an adhesive layer. The adhesive layer has central and peripheral openings to optimize liquid absorption, and the peripheral part has elastic bands and forked grooves to form independent adhesive wings, suitable for bandaging joints.
It improves the efficiency of wound fluid absorption, enhances the adhesion and stability of the bandage to the skin, prevents the bandage edges from curling up during joint movement, and improves the stability of the bandage.
Smart Images
Figure CN224421297U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bandage technology, and in particular to a bandage with an adhesive layer. Background Technology
[0002] Commonly available bandages include single-layer gauze bandages and multi-layer bandages with added dressings. Multi-layer bandages with added dressings have a stronger ability to absorb wound exudate compared to single-layer bandages. However, neither of these two types of bandages can adhere to the skin on their own; they need to be secured with external tape or knots after the wound is wrapped, which is a cumbersome process. For patients requiring emergency wound bandaging, using these bandages may reduce bandaging efficiency. However, adding an adhesive layer directly to the bandage could further reduce its ability to absorb fluid from the wound, especially for multi-layer bandages, where the reduction in absorption efficiency would be more pronounced.
[0003] On the other hand, if an adhesive layer is added to the bandage, the bandaging of joints must also be considered. When the bandage is directly attached to the joint, the adhesion between the edge of the bandage and the skin is easily broken as the joint moves and bends, resulting in the bandage not sticking tightly to the skin or even falling off, which cannot effectively cover the wound and affects the bandaging effect. Utility Model Content
[0004] This invention provides a bandage with an adhesive layer, which aims to solve the problems of existing bandages being unable to adhere to the skin on their own, and the addition of an adhesive layer to the bandage easily affecting the absorption rate of liquids and causing instability when bandaging joints.
[0005] This utility model discloses a bandage with an adhesive layer, comprising an isolation layer, an absorbent layer and an adhesive layer stacked sequentially, wherein an adhesive layer is provided on the surface of the adhesive layer away from the absorbent layer;
[0006] The adhesive layer is divided into a central portion and a peripheral portion along the center point to the outer edge. The central portion has a plurality of central openings, which are configured to maximize the fluid flow rate into the absorbent layer.
[0007] The peripheral portion has a plurality of peripheral openings, which are configured to a second size and a second shape that maximize the adhesion of the adhesive layer to the user's skin.
[0008] The outer portion has multiple elastic bands arranged circumferentially inside it;
[0009] The adhesive layer has forked slots at multiple corners to divide two adjacent sides of the adhesive layer into two relatively independent adhesive wings.
[0010] Optionally, the forked groove is formed by recessing from the edge of the adhesive layer toward the center, and the recess depth is not greater than the width of the peripheral portion.
[0011] Alternatively, the two sides of the forked slot are recessed toward the center of the slot so that the ends of the adhesive wings extend outward.
[0012] Alternatively, the elastic band extends to the end of the adhesive wing.
[0013] Alternatively, the absorbent layer includes an upper layer adhered to the insulating layer and a lower layer adhered to the adhesive layer.
[0014] Alternatively, the first size may be larger than the second size.
[0015] Optionally, the plurality of central openings includes a first central opening group and a second central opening group, wherein the first central opening group has the first shape and the second central opening group has a third shape different from the first shape.
[0016] Alternatively, the first central opening group is arranged in a first pattern, and the second central opening group is arranged in a second pattern.
[0017] Optionally, at least one of the plurality of central openings is a first central opening, the size of which is larger than at least one other central opening.
[0018] Optionally, the plurality of peripheral openings includes a first peripheral opening group and a second peripheral opening group, wherein the first peripheral opening group has the second shape and the second peripheral opening group has a fourth shape different from the second shape.
[0019] Optionally, the plurality of peripheral openings may include at least a first peripheral opening, the size of which is larger than at least one other peripheral opening.
[0020] Alternatively, the first peripheral opening group is arranged in a third pattern, and the second peripheral opening group is arranged in a fourth pattern.
[0021] Optionally, a curved slot is formed in the peripheral portion and / or the central portion.
[0022] Optionally, the adhesive layer further includes an intermediate portion located between the central portion and the peripheral portion, the intermediate portion being an unopened area.
[0023] The advantages and benefits of this utility model are as follows:
[0024] This invention provides a bandage with an adhesive layer, comprising an isolation layer, an absorbent layer, and an adhesive layer. By creating a central opening and peripheral openings on the adhesive layer, fluid from the wound can be quickly absorbed by the absorbent layer through the central opening, improving wound healing efficiency. Simultaneously, the peripheral openings help absorb small amounts of fluid at the wound edges while enhancing the adhesion between the adhesive layer and the skin, improving the bandage's stability in covering the wound. By providing forked grooves at the corners of the adhesive layer to form independent adhesive wings, and incorporating elastic bands, this invention allows the bandage to be used for bandaging wounds at joints. When bandaging a joint, stretching the adjacent adhesive wings of the adhesive layer causes them to cross and adhere to the skin, resulting in a tighter bond between the bandage edges and the skin. This prevents the bandage edges from curling up when the joint is bent, making the bandage more secure at the joint. Attached Figure Description
[0025] The above and related objectives, features, and advantages of this disclosure will be more fully understood by referring to the following detailed description of preferred embodiments of the invention (albeit illustrative), taken in conjunction with the accompanying drawings, in which:
[0026] Figure 1 An exploded view of a bandage according to an exemplary embodiment of the present disclosure is shown;
[0027] Figure 2 Show Figure 1 A plan view of the side of the adhesive layer facing the skin surface;
[0028] Figures 3A-3D Showing what can be used Figure 1 Different opening shapes in bandages;
[0029] Figures 4A-4E Showing what can be used Figure 1 Exemplary grouping of openings in a bandage;
[0030] Figures 5A-5F Showing what can be used Figure 1 An exemplary opening pattern in a bandage; and
[0031] Figure 6 An example diagram is shown illustrating the relationship between surface area, adhesion, and permeability in contact with the user's skin; and
[0032] Figure 7 This is an exploded view of a bandage according to another exemplary embodiment of the present disclosure. Detailed Implementation
[0033] Reference Figure 1 and Figure 2In one embodiment, the bandage 10 includes an insulating layer 12. In one embodiment, this insulating layer 12 may be made of a membrane impermeable to fluids and air to protect the wound covered by the bandage 10. In one embodiment, the insulating layer 12 may be opaque or may be partially or completely transparent or translucent. In one embodiment, the insulating layer 12 may be made of polyurethane. In one embodiment, the insulating layer 12 allows fluid to evaporate from the bandage 10. In one embodiment, when the bandage 10 is in place, an absorbent layer 14 may be disposed below the insulating layer 12 on the side close to the user's skin. In one embodiment, the absorbent layer 14 may adhere to the insulating layer 12. In one embodiment, the absorbent layer may be movable relative to the membrane 12. In one embodiment, the absorbent layer 14 may be made of one or more foams, such as medical-grade polyurethane foam, superabsorbent polymers, superabsorbent fibers (e.g., alginate gel fibers), to name just a few. In one embodiment, the absorbent layer 14 may be made of or contain hydrogels or hydrocolloids. In one embodiment, the absorbent layer may be made of fibrous materials. In an embodiment, the absorbent layer 14 may be made of any material that absorbs and transports exudate from the wound and / or moisture from the skin. In an embodiment, the absorbent layer 14 may include a first or top layer 14a positioned adjacent to or connected to the isolation layer 12, and a second or lower layer 14b positioned below the top layer 14a and closer to the user's skin when the bandage 10 is in place on the user's body. In an embodiment, the first layer 14a and the second layer 14b may be made of the same material. In an embodiment, the first layer 14a and the second layer 14b may be made of different materials. In an embodiment, the first layer 14a and the second layer 14b may be made of a combination of foam and superabsorbent material. In an embodiment, additional or fewer layers of absorbent material may be used in the absorbent layer 14. In an embodiment, absorbency may be measured according to BS EN 13726-1 method, and absorbency may be 0.05 g / cm³. 2 Up to 3g / cm 2 Within the range.
[0034] In one embodiment, the silicone adhesive layer 16 may be disposed below the absorbent layer 14 and positioned to contact the user's skin when the bandage is in the appropriate position on the user's body. In another embodiment, the adhesive layer 16 may be implemented using a transparent polyurethane film, wherein a silicone-based adhesive is disposed at least on its bottom surface to secure the bandage 10 to the user's skin. In another embodiment, the adhesive layer 16 may adhere to the absorbent layer 14. In embodiments where the absorbent layer 14 comprises a first absorbent layer 14a and a second absorbent layer 14b, the adhesive layer 16 may adhere to the lower second absorbent layer 14b.
[0035] In this embodiment, multiple elastic bands 16e are provided circumferentially along the interior of the outer periphery of the adhesive layer 16, giving the outer periphery a certain degree of elasticity and allowing it to be stretched outwards. At each corner of the adhesive layer 16, a forked groove 16c is provided, recessed from the edge towards its center. The forked groove 16c divides two adjacent sides of the adhesive layer 16 into two relatively independent adhesive wings 16d. The ends of the adhesive wings 16d protrude outwards in an arc shape for easy gripping during use. The recess depth of the forked groove 16c is no greater than the width of the outer periphery; that is, the forked groove 16c is located within the outer periphery, giving the adhesive wings 16d high adhesiveness. The elastic bands 16e extend to the ends of the adhesive wings 16d, providing elasticity to the adhesive wings 16d, allowing the adhesive wings 16d to be stretched outwards from their ends. By forming adhesive wings 16d, the bandage 10 can be used for bandaging wounds at joints. When bandaging a joint, the adjacent adhesive wings 16e of the adhesive layer 16 are stretched to cross and adhere to the skin, making the adhesion between the edge of the bandage 10 and the skin tighter. This prevents the edge of the bandage 10 from curling up when the joint is bent, making the bandage more secure at the joint.
[0036] In one embodiment, the silicone adhesive of the adhesive layer 16 adheres to the skin around the user's wound while avoiding strong adhesion to the wound. In another embodiment, the silicone adhesive layer 16 may include a plurality of openings 16a, 16b formed therethrough. In another embodiment, the openings 16a, 16b may be provided to allow wound exudate to pass through the adhesive layer 16 into the absorbent layer 14. In another embodiment, a first set of openings 16a may be positioned around the periphery of the bandage 10 and may have a first size smaller than a second set of openings 16b, which are positioned in an inner region of the bandage 10 that may be located above the wound. In another embodiment, the first set of openings 16a is between 0.3 and 0.7 mm, while the second set of openings 16b is between 1.1 and 1.5 mm. In another embodiment, the first set of openings 16a is positioned around the periphery of the bandage 10 and is generally located outside the boundary of the wound. The smaller size of these openings 16a maximizes the surface area in contact with the skin and allows for strong adhesion between the bandage 10 and the skin around the user's wound, while still allowing any fluid around the periphery of the wound to drain through the openings 14a. In one embodiment, a second set of openings 16b is formed in the central portion of the bandage adjacent to the absorbent layer 14 and above the wound, allowing exudate from the wound to enter the absorbent layer 14 through the openings 16b. In one embodiment, the larger size of the openings 16b allows more exudate to pass from the wound through the openings 16b and into the absorbent layer 14. In one embodiment, the larger size of the openings 16b reduces the contact between the adhesive and the wound, allowing the bandage 10 to detach from the wound when necessary. In one embodiment, the adhesive layer 16 and the membrane 12 extend outward beyond the periphery of the absorbent layer 14. In one embodiment, other materials can be used to form the membrane in the adhesive layer 16, as long as the adhesive facing the user's skin is silicone-based. In one embodiment, any adhesive suitable for contact with the user's skin can be used. In this embodiment, openings 16a and 16b in the adhesive layer 16 allow exudate to pass through and enter the absorbent layer 14. The silicone adhesive layer 16 provides a stable and secure bond to the user's skin, keeping the bandage 10 in place while remaining relatively comfortable. Additionally, the silicone adhesive allows for relatively easy removal without damaging the wound.
[0037] In one embodiment, one or more protective liners 18a, 18b may be provided to cover the porous silicone adhesive lower layer 16 prior to use. In another embodiment, the protective liners 18a, 18b are preferably removable from the adhesive layer 16 and are preferably made of polyethylene. In yet another embodiment, the liners 18a, 18b may be made of a coated paper material. In still another embodiment, the liners 18a, 18b may be made of other materials, provided that they are removable from the adhesive layer 16 without damaging the adhesive.
[0038] In an embodiment, a packaging element may be provided to store the bandage 10 for later use. In an embodiment, the packaging element may be made of a combination of paper and polyethylene or of paper, forming a pouch or pocket in which the bandage 10 can be stored. In an embodiment, the packaging element may be made of any other suitable durable material. In an embodiment, the packaging element may be made of a material suitable for sterilizing the bandage 10 while it is in the packaging element. In an embodiment, the packaging element may be made of a liquid-impermeable material. In an embodiment, the packaging element may be made of a material that allows liquid to drain but not to enter, or allows liquid to enter but not to drain. In an embodiment, the packaging element may be transparent or contain a transparent portion. In an embodiment, the packaging element may include an upper portion and a lower portion, with the bandage 10, containing the aforementioned layers, sandwiched between the upper and lower portions.
[0039] In embodiments, the shape, size, spacing, and / or orientation of the openings 16a, 16b can be varied to maximize adhesion between the bandage 10 and the skin surrounding the user's wound, while allowing optimal permeability to draw fluid away from the wound covered by the bandage. Generally, optimal permeability is required in the central portion of the bandage 10, which covers and contacts the wound so that fluid can be drawn away and healing is promoted, while adhesion is preferably optimized around the edges of the bandage extending beyond the wound boundary to promote a strong bond between the bandage 10 and the skin outside the user's wound area, thereby securing the bandage firmly in place. Generally, the larger the surface area of the adhesive layer 16 in contact with the user's skin, the stronger the adhesion. Therefore, small openings maximize the surface area in contact with the user's skin and generally provide better adhesion. However, small openings can limit the amount of exudate that can pass through the adhesive layer 16, and therefore tend to result in lower permeability of the adhesive layer 16. Larger openings that result in a smaller surface area in contact with the user's skin tend to increase permeability but decrease adhesion. Figure 6 An example diagram illustrating the general relationship between surface area, permeability, and adhesion is shown. Generally, as shown in the reference... Figure 6 As can be seen, as the surface area decreases, the permeability also decreases; however, the adhesion increases. Changing the size, shape, and position of the openings can be used to optimize the permeability and adhesion of different parts of the bandage 10.
[0040] In an embodiment, the shapes of the openings 16a and 16b provided in the adhesive layer 16 can be varied, which can change the effective surface area of the adhesive layer 16 in contact with the user. Figure 3A An exemplary embodiment is shown in which opening 116a is circular. Opening 116a can be used as a substitute for or supplement to opening 16a. Figure 3AAs shown, the size of the circular opening 116a can be varied, and a larger opening can be used as a substitute for or supplement to opening 16b. In embodiments, various sizes of circular openings can be used in the adhesive layer 16 to optimize permeability and adhesion in different sections. In embodiments, such as Figure 3B As shown, opening 116b can be square and can be used as a substitute for or supplement to opening 16a. In embodiments, the size of the square opening 116b can vary, such as... Figure 3B As can be seen, a larger opening can be used as a substitute for or supplement to opening 16b. In embodiments, square openings of various sizes can be provided in the adhesive layer 16 to optimize permeability and adhesion. In embodiments, rectangular openings 116c can be provided in the adhesive layer 16, such as... Figure 3C Those shown, for example, serve as a substitute for or supplement to opening 16a. Figure 3C As can be seen, the rectangular opening 116c can be set to a larger size, which can be used as a substitute for or supplement to the opening 16b. In embodiments, the adhesive layer 16 may include rectangular openings 116c of various sizes at different locations to optimize permeability and adhesion. In embodiments, an oval opening 116d can be provided in the adhesive layer 16 as a substitute for or supplement to the opening 16a. In embodiments, the oval opening 116d can be larger in size, which can be used as a substitute for or supplement to the opening 16b. In embodiments, oval openings 116d of various sizes can be provided in the adhesive layer.
[0041] In an embodiment, the circular openings 216a may be disposed in the adhesive layer 16 and clustered together, for example... Figure 4A As can be seen in the image. In one embodiment, each group may contain the same number of openings. In another embodiment, one or more groups may contain different numbers of openings. In one embodiment, circular openings 216b may be provided in the adhesive layer 16, wherein different intervals are provided between the openings, for example... Figure 4B As can be seen, changing the spacing between the openings 216b can be used to change the effective surface area in contact with the user's skin at different locations. In embodiments, openings of other shapes can be clustered together.
[0042] In an embodiment, one or more openings 216c may have a wedge shape and may be disposed in the adhesive layer 16, for example... Figure 4C As can be seen in the embodiments, the spacing between openings 216d of similar size can be varied to adjust the amount of surface area in contact with the user's skin, for example... Figure 4D As can be seen in the image. In an embodiment, the slot or channel 216e may be formed in the adhesion layer 16, for example... Figure 4EAs can be seen above. In an embodiment, the slot or channel 216e may have a curved shape, which can be varied to provide different effective surface areas in contact with the user's skin at different points in the bandage, thereby changing the permeability and adhesion as needed.
[0043] In this embodiment, since the periphery of the bandage 10 and the adhesive layer 16 is typically located outside the wound boundary, it may be almost unnecessary to create an opening in this area, as there is little or no exudate being squeezed out in this region. Figure 5A , 5C Figures 5E show patterns of openings 316a, 316c, and 316e, where no openings are provided around the periphery of the adhesive layer 16. Figure 5A The internal region of the embodiment includes circular openings of varying sizes, with a larger one in the center, to maximize permeability directly above the wound and minimize adhesion directly above the wound. Figure 5C In the middle, the internal openings 316c have substantially the same size; however, the spacing between the openings varies to change the effective surface area in contact with the user. The smallest spacing is at the center above the wound, so that as it extends outward from the center, permeability increases, adhesion decreases, and the spacing increases, thereby increasing the surface area in contact with the user. Figure 5E The internal openings 316e are shown, which are grouped to optimize permeability at the center or middle and increase adhesion extending away from the center.
[0044] Figure 5B , 5D Figures 5F and 5F show the periphery of the adhesive layer and the openings 316b, 316d, and 316f disposed within it. Figure 5B In the middle, the opening 316b around the periphery has a relatively small size, while the inner opening has a varying but generally larger size to optimize permeability in the middle and adhesion around the periphery. Figure 5D In the middle, the openings 316d are more or less evenly spaced around the periphery, while the spacing between the openings 316d varies inside, so that the spacing in the middle is minimized to reduce the effective surface area and increase permeability, and the spacing away from the middle increases to increase the adhesion. Figure 5F The opening 316f includes circular openings regularly distributed around the periphery to provide consistent adhesive force, and openings in different groups disposed inside to optimize central permeability and increase adhesive force extending away from the center.
[0045] Figure 7A bandage 110 according to an embodiment of the present disclosure is shown. In an embodiment, the bandage 110 may include an isolation layer 112, which may be similar to the isolation layer 12 discussed above. In an embodiment, an absorbent layer 114 may be disposed below the isolation layer 112 on the side close to the user's skin when the bandage 110 is in place. In an embodiment, the absorbent layer 114 may adhere to the isolation layer 112. In an embodiment, the absorbent layer 114 may be movable relative to the membrane 112. In an embodiment, the absorbent layer 114 may be made of one or more foams, such as medical-grade polyurethane foam, superabsorbent polymers, superabsorbent fibers (e.g., alginate gel fibers), to name just a few. In an embodiment, the absorbent layer 114 may be made of or contain hydrogels or hydrocolloids. In an embodiment, the absorbent layer 114 may be made of fibrous material. In an embodiment, the absorbent layer 114 may be made of any material that absorbs and transports exudate from the wound and / or moisture from the skin. In an embodiment, the absorbent layer 114 may include a first or top layer 114a connected to or otherwise positioned adjacent to the insulating layer 112, and a second or lower layer 114b positioned below the top layer 114a and closer to the user's skin when the bandage 110 is in the appropriate position on the user's body. In an embodiment, the first layer 114a and the second layer 114b may be made of the same material. In an embodiment, the first layer 114a and the second layer 114b may be made of different materials. In an embodiment, an intermediate layer 114c may be disposed between the first layer 114a and the second layer 114b, and may be made of a superabsorbent material. In an embodiment, the absorbency may be measured according to the method of BS EN 13726-1, and the absorbency may be 0.05 g / cm³. 2 Up to 3g / cm 2 Within the range.
[0046] In an embodiment, the first layer 114a or the second layer 114b may be made of a superabsorbent material. In an embodiment, the intermediate layer 114c may be made of any other absorbent material. In an embodiment, such as Figure 7 As shown, the absorbent layer 114 may be slightly smaller than the insulating layer 112, such that the insulating layer extends beyond the edge of the absorbent layer 114 and the adhesive layer 116 also extends beyond the periphery of the absorbent layer. In an embodiment, the intermediate layer 114c may be made of a superabsorbent gel. In an embodiment, the intermediate layer 114c may include one or more openings 114d to increase flexibility. In an embodiment, additional or fewer layers of absorbent material may be used in the absorbent layer 114.
[0047] In an embodiment, a silicone adhesive layer 116 may be disposed below the absorbent layer 114 and positioned to contact the user's skin, just like adhesive layer 16. In an embodiment, adhesive layer 116 may be implemented using a transparent polyurethane film, wherein a silicone-based adhesive is disposed at least on its bottom surface to secure the bandage 110 to the user's skin, just like adhesive layer 16. In an embodiment, adhesive layer 116 may adhere to the absorbent layer 114, such as the lower second absorbent layer 114b. In an embodiment, adhesive layer 1116 may include various openings. In an embodiment, the central portion of absorbent layer 116 may include a central opening 1116a to allow wound exudate to pass through and enter the adhesive layer 114. In an embodiment, a middle portion 1116b surrounds the central opening 1116a to achieve enhanced adhesion to the user's skin. In an embodiment, this middle portion 1116b is preferably configured such that when the bandage 110 is in place, the middle portion is outside the wound boundary and provides a seal around the wound periphery. In one embodiment, a peripheral portion 1116c may be provided around the central portion 1116b. In another embodiment, the peripheral portion 1116c may include a peripheral opening smaller than the central opening 1116a, allowing for increased surface area and better adhesion to the user's skin. In another embodiment, a central portion 1116d may be provided around the peripheral portion 1116d on the periphery of the bandage 110. In another embodiment, the central opening of this central portion 1116d may be aligned with the edge of the insulating layer 112, allowing the adhesive on the bottom of the insulating layer 112 to adhere to the user's skin and provide additional sealing around the bandage 110. In this embodiment, the recess depth of the forked groove 1116f is the same as the depth of the peripheral portion 1116c, the width of the adhesive wing 1116g is the same as the width of the peripheral portion 1116c, and the elastic band 1116e extends to the end of the adhesive wing 1116g.
[0048] The above description of the disclosed embodiments is intended to enable those skilled in the art to implement or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the protection scope of this invention.
Claims
1. A bandage having an adhesive layer, characterized in that, It includes an isolation layer, an absorbent layer and an adhesive layer stacked in sequence, wherein an adhesive layer is provided on the surface of the adhesive layer away from the absorbent layer; The adhesive layer is divided into a central portion and a peripheral portion along the center point to the outer edge. The central portion has a plurality of central openings, which are configured to maximize the fluid flow rate into the absorbent layer. The peripheral portion has a plurality of peripheral openings, which are configured to a second size and a second shape that maximize the adhesion of the adhesive layer to the user's skin. The outer perimeter is provided with multiple elastic bands extending circumferentially.
2. The bandage with an adhesive layer according to claim 1, characterized in that, The adhesive layer has forked slots at multiple corners to divide two adjacent sides of the adhesive layer into two relatively independent adhesive wings. The forked slots are formed by recesses from the edge of the adhesive layer toward the center, and the recess depth is not greater than the width of the outer periphery.
3. The bandage with an adhesive layer according to claim 2, characterized in that, The two sides of the forked slot are recessed towards the center of the slot so that the ends of the adhesive wings extend outward.
4. The bandage with an adhesive layer according to claim 2, characterized in that, The elastic band extends to the end of the adhesive wing.
5. The bandage with an adhesive layer according to claim 1, characterized in that, The absorbent layer includes an upper layer adhered to the insulating layer and a lower layer adhered to the adhesive layer.
6. The bandage with an adhesive layer according to claim 1, characterized in that, The first size is larger than the second size.
7. The bandage with an adhesive layer according to claim 1, characterized in that, The plurality of central openings include a first central opening group and a second central opening group, wherein the first central opening group has the first shape and the second central opening group has a third shape different from the first shape.
8. The bandage with an adhesive layer according to claim 7, characterized in that, The first central opening group is arranged in a first pattern, and the second central opening group is arranged in a second pattern.
9. The bandage with an adhesive layer according to claim 1, characterized in that, The plurality of central openings includes at least one first central opening, the size of which is larger than at least one other central opening.
10. The bandage with an adhesive layer according to claim 1, characterized in that, The plurality of peripheral openings include a first peripheral opening group and a second peripheral opening group, wherein the first peripheral opening group has the second shape and the second peripheral opening group has a fourth shape different from the second shape.
11. The bandage with an adhesive layer according to claim 10, characterized in that, The first peripheral opening group is arranged in a third pattern, and the second peripheral opening group is arranged in a fourth pattern.
12. The bandage with an adhesive layer according to claim 1, characterized in that, The plurality of peripheral openings includes at least a first peripheral opening, the size of which is larger than at least one other peripheral opening.
13. The bandage with an adhesive layer according to claim 1, characterized in that, A curved slot is formed in the outer periphery and / or the central portion.
14. The bandage with an adhesive layer according to claim 1, characterized in that, The adhesive layer also includes an intermediate portion located between the central portion and the peripheral portion, the intermediate portion being an area without openings.