Adhesively fixed hook-and-loop fastener assembly

Abstract

Disclosed in the present invention is an adhesively fixed hook-and-loop fastener assembly, comprising a foam layer, wherein a stretch film layer adheres to the surface of one side of the foam layer; a pressure-sensitive adhesive layer configured to attach to a surface to be subjected to mounting adheres to the stretch film layer; a first hook-and-loop fastener adheres to the surface of the other side of the foam layer; and the lower ends of the pressure-sensitive adhesive layer and the stretch film layer are both connected to a stretching grip portion. The provision of the foam layer improves the conformability between the pressure-sensitive adhesive layer and the surface to be subjected to mounting, and the foam layer also directly adheres to a woven surface of the first hook-and-loop fastener so as to prevent the first hook-and-loop fastener from being easily shed. When a user applies a force to the stretching grip portion, the stretch film layer is driven to stretch so that the stretch film layer and the pressure-sensitive adhesive layer are stretched and deformed together. As the foam layer is tightly bonded to the woven surface of the first hook-and-loop fastener, the foam layer is peeled off from the stretch film layer along the contact interface, and by applying a relatively small external force, the pressure-sensitive adhesive layer can be completely peeled off from the surface where same is mounted, such that the first hook-and-loop fastener adheres firmly, and the hook-and-loop fastener assembly also can be peeled, with an appropriate pull force, off from the surface where same is mounted.

Description

A sticker-fixed magic tape assembly TECHNICAL FIELD

[0001] The present application relates to a sticker-fixed magic tape assembly. BACKGROUND

[0002] At present, in the field of household products, due to the trend of vertical space utilization, pressure-sensitive adhesive has been well applied in products such as hooks and wall-mounted storage baskets because of its advantages such as removable residue-free and good adhesion. When removed, the adhesive strip can lose adhesion by stretching to a certain extent, and can be completely separated from the wall without leaving residue that is difficult to clean or damaging the wall. However, when dealing with the case where the wall has small protrusions or recesses, the pressure-sensitive adhesive cannot completely adhere to the wall, thereby affecting the adsorption strength of the pressure-sensitive adhesive.

[0003] Therefore, in the prior art, pressure-sensitive adhesive is provided on the foam layer to enhance the effect of the pressure-sensitive adhesive adhering to the wall. However, since the toughness and breaking elongation of the foam layer and the pressure-sensitive adhesive are different, when the pressure-sensitive adhesive is stretched, the foam layer is also stretched. In the process of stretching, the foam layer cannot be stretched to the required length along with the pressure-sensitive adhesive and will break, and part of the pressure-sensitive adhesive is not stretched to lose adhesion, resulting in part of the pressure-sensitive adhesive and the foam layer remaining on the wall.

[0004] To this end, the applicant discloses in the patent document with the patent publication number CN217757318U that a synergistic film layer is provided between the foam layer and the pressure-sensitive adhesive layer, which drives the foam layer and the corresponding pressure-sensitive adhesive layer to stretch and deform as a whole, helping the pressure-sensitive adhesive layer to deform completely and lose adhesion, and facilitating the complete removal of the pressure-sensitive adhesive layer from the wall surface. In actual application, in order to facilitate the quick installation and removal of the object on the wall surface, referring to FIG. 1, one side of the adhesive assembly is fixed to the wall surface through the pressure-sensitive adhesive layer 300, and the other side is bonded to the first magic tape 400 through the pressure-sensitive adhesive layer 300. The second magic tape 800 corresponding to the first magic tape 400 is provided on the object, and the second magic tape 800 of the object is removed from the first magic tape 400 to realize the dismounting function. Among them, the front surface of the first magic tape 400 is a hook surface or a rough surface, and the back surface of the first magic tape 400 is a woven surface, and the woven surface and the pressure-sensitive adhesive layer 300 are bonded together. Due to the up-and-down fluctuation of the track of the woven lines of the woven surface, the contact area between the woven surface and the pressure-sensitive adhesive layer 300 is extremely limited, which causes the first magic tape 400 to easily fall off the adhesive assembly when bearing a small load. If the adhesion of the pressure-sensitive adhesive layer 300 is increased to increase the bonding force between the woven surface of the first magic tape 400 and the pressure-sensitive adhesive layer 300 to prevent the first magic tape 400 from easily falling off, the bonding force of the pressure-sensitive adhesive layer 300 to the woven surfaces on both sides and the synergistic film layer 10 is large. In the process of stretching the adhesive assembly downward, the synergistic film layer 10 near the first magic tape 400 is elongated and deformed to make the pressure-sensitive adhesive layer 300 on it lose adhesion, which needs to overcome the bonding force of the pressure-sensitive adhesive layer 300 acting on the first magic tape 400, and a larger pulling force than the conventional use is needed to peel off the adhesive assembly from the wall, and even the bonding force between the pressure-sensitive adhesive layer 300 and the first magic tape 400 is greater than the structural strength of the synergistic film layer 10 itself. At this time, the synergistic film layer 10 near the first magic tape 400 will be directly pulled off, which will cause the user to have a very poor experience. Therefore, the bonding force of the pressure-sensitive adhesive layer 300 between the synergistic film layer 10 and the first magic tape 400 is too large or too small, which will cause different problems, and it is also difficult to achieve good user experience through debugging. The present application is proposed to solve the above problems, and a magic tape assembly that can both stick the first magic tape 400 and completely peel off from the wall surface with appropriate pulling force is provided. SUMMARY

[0005] In order to overcome the shortcomings of the prior art, one of the purposes of the present application is to provide a magic tape assembly that can both stick the first magic tape and completely peel off from the mounting surface with appropriate pulling force.

[0006] According to an embodiment of the present invention, a Velcro assembly for fastening includes: a foam layer, a stretch film layer adhered to one side surface of the foam layer, a pressure-sensitive adhesive layer for attaching to a surface to be installed adhered to the stretch film layer, and a first Velcro fastener adhered to the other side surface of the foam layer. The lower ends of the pressure-sensitive adhesive layer and the stretch film layer are both connected to a stretch grip portion. When the stretch grip portion is stretched, the stretch film layer and the pressure-sensitive adhesive layer can be stretched and deformed together to separate the foam layer and the stretch film layer along their contact position.

[0007] A Velcro assembly for adhesive fastening according to an embodiment of the present invention has at least the following beneficial effects:

[0008] The above-described hook and loop fastener assembly utilizes a foam layer to improve the adhesion between the pressure-sensitive adhesive layer and the surface to be installed. The foam layer is also directly bonded to the woven surface of the first hook and loop fastener to prevent it from easily detaching. When the user applies force to the stretch grip, the stretch film layer and the pressure-sensitive adhesive layer stretch and deform together. Although the stretch film layer tends to stretch and deform along with the foam layer, the tight bond between the foam layer and the woven surface of the first hook and loop fastener allows the foam layer and stretch film layer to peel off along the contact point between them. A small external force is sufficient to completely peel the pressure-sensitive adhesive layer from the surface to be installed without causing breakage. Ultimately, this achieves the effect of both firmly adhering the first hook and loop fastener and being able to completely peel it off from the surface to be installed with appropriate tension.

[0009] In some embodiments of the present invention, the foam layer and the stretch film layer are bonded together by a first adhesive layer, and the foam layer and the first hook and loop fastener are bonded together by a second adhesive layer. The pressure-sensitive adhesive layer, the stretch film layer, the first adhesive layer, the foam layer and the second adhesive layer are stacked in sequence and extend downward below the first hook and loop fastener to form at least a portion of the stretch grip portion.

[0010] In some embodiments of the present invention, the second adhesive layer is fused to the foam layer on one side facing the foam layer, and the second adhesive layer is located within the woven surface of the first hook and loop fastener on one side facing the first hook and loop fastener.

[0011] In some embodiments of the present invention, the adhesiveness of the pressure-sensitive adhesive layer, the adhesiveness of the first adhesive layer, and the adhesiveness of the second adhesive layer increase sequentially.

[0012] In some embodiments of the present invention, the first adhesive layer, the second adhesive layer, and the pressure-sensitive adhesive layer are made of the same material and have the same thickness.

[0013] In some embodiments of the present application, the elongation of the first adhesive layer, the second adhesive layer and the pressure sensitive adhesive layer is >200%, and the initial tack of the first adhesive layer, the second adhesive layer and the pressure sensitive adhesive layer is >5N.

[0014] In some embodiments of the present application, the longitudinal breaking elongation of the stretch film layer is ≥150%, and the elastic recovery of the stretch film layer is ≤50%.

[0015] In some embodiments of the present application, the stretch film layer is a TPU layer or a PE layer.

[0016] In some embodiments of the present application, the thickness of the foam layer is 0.3mm-1mm, the thickness of the stretch film layer is 0.02mm-0.15mm, and the thickness of the pressure sensitive adhesive layer is 0.02mm-0.15mm.

[0017] In some embodiments of the present application, the tensile strength of the whole of the pressure sensitive adhesive layer, the stretch film layer and the foam layer is >0.3MPa, the maximum load of the whole of the pressure sensitive adhesive layer, the stretch film layer and the foam layer is >5N, and the longitudinal breaking elongation of the whole of the pressure sensitive adhesive layer, the stretch film layer and the foam layer is >200%.

[0018] Additional aspects and advantages of the present application will be in part apparent and in part pointed out below. BRIEF DESCRIPTION OF DRAWINGS

[0019] The present application will be further described below in conjunction with the accompanying drawings and examples.

[0020] Fig. 1 is a schematic structural diagram of a conventional magic tape assembly with a first magic tape;

[0021] Fig. 2 is a schematic structural diagram of an embodiment of the magic tape assembly of the present application;

[0022] Fig. 3 is a schematic diagram of the embodiment of Fig. 2 for testing the shear resistance force. DETAILED DESCRIPTION

[0023] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0024] In the description of the present application, it should be understood that, in relation to the orientation description, for example, the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the purpose of facilitating the description of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0025] In the description of the present application, the meaning of one or more is one or more, the meaning of multiple is two or more, greater than, less than, more than, etc. are understood as not including the number, above, below, within, etc. are understood as including the number. If the first, second is described, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the sequence of technical features indicated.

[0026] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] Referring to FIG. 2, a kind of pasting fixed magic paste assembly of the present application, comprising: foam layer 100, one side surface of the foam layer 100 is attached with stretch film layer 200, the stretch film layer 200 is attached with pressure-sensitive adhesive layer 300 for being attached on the surface to be installed, the other side surface of the foam layer 100 is attached with first magic paste 400, the lower end of the pressure-sensitive adhesive layer 300 and the stretch film layer 200 are connected with stretch holding part 700, when the stretch holding part 700 is stretched, the stretch film layer 200 and the pressure-sensitive adhesive layer 300 can be stretched together to make the foam layer 100 and the stretch film layer 200 separate along the contact position of the two.

[0028] The surface to be installed is generally a wall surface, and can also be other relatively smooth surfaces. Referring to Figure 2, when the pressure-sensitive adhesive layer 300 of the above-mentioned magic tape assembly is attached to a wall surface, the foam layer 100 can improve the adhesion between the pressure-sensitive adhesive layer 300 and the wall surface. At the same time, the foam layer 100 is directly bonded to the woven surface of the first magic tape 400, which is also conducive to increasing the contact area between the foam layer 100 and the woven surface of the magic tape, thereby preventing the first magic tape 400 from easily falling off. When the user applies force to the stretching handle 700, the stretching film layer 200 can be stretched and deformed together with the pressure-sensitive adhesive layer 300. At this time, the stretching film layer 200 has a movement trend of stretching and deforming together with the foam layer 100, but the foam layer 100 cannot stretch and deform together with the stretching film layer 200 due to the close combination between the foam layer 100 and the woven surface of the first magic tape 400. The foam layer 100 and the stretching film layer 200 can be peeled off along the contact position between the foam layer 100 and the stretching film layer 200, that is, the pressure-sensitive adhesive layer 300 is separated from the wall surface at the same time, and the whole formed by the foam layer 100 and the first magic tape 400 is separated from the stretching film layer 200. The stretching film layer 200 has a thin layer of foam adhered thereto, so that the adhesive between the foam layer 100 and the stretching film layer 200 also loses adhesion. The external force required by the user to peel off the magic tape assembly from the wall surface and the external force required to peel off the single-layer pressure-sensitive adhesive layer 300 are basically equal, that is, a relatively small external force can completely peel off the pressure-sensitive adhesive layer 300 from the surface to be installed, and will not cause the pressure-sensitive adhesive layer 300 and the stretching film layer 200 to break, thereby achieving the effect of being able to stick the first magic tape 400 stably and being able to completely peel off from the surface to be installed with appropriate pulling force. It can be understood that when the magic tape assembly with the above structure is disassembled, the foam layer 100 and the first magic tape 400 are separated from the other parts of the magic tape assembly as a whole, so the foam layer 100 and the first magic tape 400 can be connected by an adhesive with strong adhesion, which will not affect the normal use of the magic tape assembly.

[0029] Referring to Figs. 1 to 3, the shear resistance of the hook-and-loop fastener assembly shown in Fig. 1 and the hook-and-loop fastener assembly of the present application is tested by the following method: the first hook-and-loop fastener of the hook-and-loop fastener assembly shown in Fig. 1 and the hook-and-loop fastener assembly of the present application are respectively bonded with two hook members 810 provided with a second hook-and-loop fastener 800, and then weights 900 are gradually applied to the hook members 810 to test the critical weight that causes the weights 900 to fall within 30 seconds. The following results are obtained: when the weight 900 applied to the hook-and-loop fastener assembly shown in Fig. 1 reaches 8 kg, the first hook-and-loop fastener, the second hook-and-loop fastener 800, the hook member 810 and the weight 900 are separated from other parts as a whole, and the separation surface is the bonding surface between the first hook-and-loop fastener and the hook-and-loop fastener assembly; when the weight 900 applied to the hook-and-loop fastener assembly of the present application reaches 12 kg, the foam layer 100, the first hook-and-loop fastener, the second hook-and-loop fastener 800, the hook member 810 and the weight 900 are separated from other parts as a whole, and the separation surface is the interface between the stretch film layer 200 and the foam layer 100. Thus, it can be seen that the hook-and-loop fastener assembly of the present application has higher shear resistance than the hook-and-loop fastener assembly shown in Fig. 1, and thus has higher lifting load capacity.

[0030] In addition, it should be noted that after the layered structure of the hook-and-loop fastener assembly shown in Fig. 1 is formed in the production process, it needs to be cut to a certain size, and at this time, the lower edge of the first hook-and-loop fastener 400 will produce small spikes, and when the hook-and-loop fastener assembly of this structure is stretched, the adhesive layer between the first hook-and-loop fastener 400 and the cooperating film layer will be easily cut, causing the phenomenon of breakage. Since the first hook-and-loop fastener 400 and the foam layer 100 of the present application are separated from other parts of the hook-and-loop fastener assembly as a whole, even if the edge of the first hook-and-loop fastener 400 produces small spikes, the above problem will not occur when stretched. It can be seen that the hook-and-loop fastener assembly of the present application solves multiple problems existing in the prior art at one time, which is very ingenious.

[0031] Referring to Figure 2, in some embodiments of the present invention, the foam layer 100 and the stretch film layer 200 are bonded together by a first adhesive layer 500, and the foam layer 100 and the first hook and loop fastener 400 are bonded together by a second adhesive layer 600. For ease of manufacturing and user convenience, the pressure-sensitive adhesive layer 300, the stretch film layer 200, the first adhesive layer 500, the foam layer 100, and the second adhesive layer 600 are sequentially stacked and extend downwards below the first hook and loop fastener 400 to form at least a portion of the stretch grip portion 700. When it is necessary to attach the hook and loop fastener... When the Velcro assembly is peeled off from the wall, simply pinch the rest of the assembly except for the first Velcro 400 and pull it downwards. At this time, the foam layer 100 and the second adhesive layer 600 break first near the lower edge of the first adhesive layer 500. Then, the pressure-sensitive adhesive layer 300, the stretch film layer 200, and the first adhesive layer 500 continue to be stretched and deformed downwards as a whole. The first adhesive layer 500 then separates from the foam layer 100 along their contact point. After separating from the foam layer 100, the first adhesive layer 500 still has a thin layer of foam adhering to it. This thin layer of foam is detached from the surface of the foam layer 100. The contact point between the first adhesive layer 500 and the foam layer 100 can be a contact interface or a layered structure with a certain thickness. As in the above embodiment, when the first adhesive layer 500 separates, a thin layer of foam adheres to it. That is, the actual separation point between the first adhesive layer 500 and the foam layer 100 is not their contact surface, but rather a point slightly offset from the contact surface in the thickness direction of the foam layer 100. In this case, the contact point between the first adhesive layer 500 and the foam layer 100 can be considered a layered structure with a certain thickness. It should be noted that, to prevent the user's skin from contacting the adhesive substances of the pressure-sensitive adhesive layer 300 and the second adhesive layer 600, paper material 710 is adhered to the surfaces of both the pressure-sensitive adhesive layer 300 and the second adhesive layer 600.

[0032] In some embodiments of the present invention, the second adhesive layer 600 is partially fused to the foam layer 100 on one side, and the second adhesive layer 600 is partially located within the woven surface of the first hook and loop fastener 400 on the other side. It is understood that the foam layer 100 has a certain elastic deformation capacity along its thickness direction, and the surface of the foam layer 100 is microscopically uneven. The second adhesive layer 600 facilitates partial fusion with the foam layer 100, and the uneven surface of the foam layer 100 also facilitates partial entry of the second adhesive layer 600 into the woven surface of the first hook and loop fastener 400, thereby ensuring a firm connection between the foam layer 100, the second adhesive layer 600, and the first hook and loop fastener 400.

[0033] In some embodiments of the present invention, the adhesiveness of the pressure-sensitive adhesive layer 300, the adhesiveness of the first adhesive layer 500, and the adhesiveness of the second adhesive layer 600 increase sequentially. It is understood that the higher adhesiveness of the second adhesive layer 600 helps to firmly bond the first Velcro 400 to the foam layer 100, while the lower adhesiveness of the pressure-sensitive adhesive layer 300 makes it less likely to damage the wall surface, providing good protection for situations such as wallpaper or walls coated with a film.

[0034] Referring to Figure 2, in some embodiments of the present invention, the first adhesive layer 500, the second adhesive layer 600, and the pressure-sensitive adhesive layer 300 have the same material and thickness. That is, the first adhesive layer 500, the second adhesive layer 600, and the pressure-sensitive adhesive layer 300 are all made of pressure-sensitive adhesive, which is beneficial for rapid manufacturing without having to switch to another process.

[0035] In some embodiments of the present invention, to achieve a good peeling effect, the elongation of the first adhesive layer 500, the second adhesive layer 600, and the pressure-sensitive adhesive layer 300 is >200%. To ensure the structural stability of the Velcro assembly and its load-bearing capacity when bonded to the surface to be installed, the initial tack of the first adhesive layer 500, the second adhesive layer 600, and the pressure-sensitive adhesive layer 300 is >5N. It should be noted that initial tack refers to the adhesiveness exhibited by the adhesive tape when it first contacts the substrate. Initial tack is crucial to the performance of the adhesive tape in actual use because it determines whether the tape can quickly and firmly adhere to the substrate. The initial tack test method is to measure the separation force after a ring-shaped adhesive tape is brought into contact with a standard test plate of a certain area at a certain speed. This test method is common knowledge in the art and will not be further described here.

[0036] In some embodiments of the present invention, the longitudinal elongation at break of the stretch film layer 200 is ≥150%, and the elastic recovery of the stretch film layer 200 is ≤50%. It is understood that when the longitudinal elongation at break of the stretch film layer 200 meets the above requirements, it ensures that the stretch film layer 200 will not break before the pressure-sensitive adhesive layer 300 is stretched to the point of losing its adhesiveness. When the elastic recovery of the stretch film layer 200 meets the above requirements, it prevents the stretch film layer 200 from rebounding onto the user's hand and causing pain.

[0037] In some embodiments of the present invention, the stretch film layer 200 is a TPU layer or a PE layer. It is understood that stretch film layers 200 made of TPU or PE materials can meet the requirements of longitudinal elongation at break ≥150% and elastic recovery ≤50%, and these two materials are readily available and relatively inexpensive.

[0038] As a preferred embodiment of the present invention, the thickness of the foam layer 100 is 0.3mm to 1mm, the thickness of the stretch film layer 200 is 0.02mm to 0.15mm, and the thickness of the pressure-sensitive adhesive layer 300 is 0.02mm to 0.15mm. Through testing, it has been found that when the foam layer 100, stretch film layer 200, and pressure-sensitive adhesive layer 300 meet the above-mentioned thickness ranges, the Velcro assembly has good load-bearing capacity and is easily and completely peeled off from the wall.

[0039] In some embodiments of the present invention, the tensile strength of the entire assembly of the pressure-sensitive adhesive layer 300, the stretch film layer 200, and the foam layer 100 is >0.3 MPa; the maximum load capacity of the entire assembly of the pressure-sensitive adhesive layer 300, the stretch film layer 200, and the foam layer 100 is >5 N; and the longitudinal elongation at break of the entire assembly of the pressure-sensitive adhesive layer 300, the stretch film layer 200, and the foam layer 100 is >200%. It should be noted that in daily home life, the weight of small items hung on the wall is mostly ≤0.5 kg. Therefore, the Velcro assembly needs to meet the following requirements: maximum load capacity >5 N. The longitudinal elongation at break of the entire assembly of the pressure-sensitive adhesive layer 300, the stretch film layer 200, and the foam layer 100 >200% helps to ensure that the pressure-sensitive adhesive layer 300 and the stretch film layer 200 will not break before the pressure-sensitive adhesive layer 300 is stretched to the point of losing its adhesiveness, thus ensuring easy-tear performance.

[0040] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0041] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A Velcro assembly for adhesive fastening, characterized in that, include: A foam layer (100) has a stretch film layer (200) adhered to one side surface of the foam layer (100), and a pressure-sensitive adhesive layer (300) for attaching to the surface to be installed is adhered to the stretch film layer (200). A first Velcro strip (400) is adhered to the other side surface of the foam layer (100). The lower ends of the pressure-sensitive adhesive layer (300) and the stretch film layer (200) are connected to a stretch gripping part (700). When the stretch gripping part (700) is stretched, the stretch film layer (200) and the pressure-sensitive adhesive layer (300) can be stretched and deformed together to separate the foam layer (100) and the stretch film layer (200) along their contact position.

2. The Velcro assembly for adhesive fastening according to claim 1, characterized in that: The foam layer (100) is bonded to the stretch film layer (200) by a first adhesive layer (500), and the foam layer (100) is bonded to the first hook and loop fastener (400) by a second adhesive layer (600). The pressure-sensitive adhesive layer (300), the stretch film layer (200), the first adhesive layer (500), the foam layer (100), and the second adhesive layer (600) are stacked in sequence and extend downward below the first hook and loop fastener (400) to form at least a portion of the stretch grip portion (700).

3. The Velcro assembly for adhesive fastening according to claim 2, characterized in that: The second adhesive layer (600) is fused to the foam layer (100) on one side facing the foam layer (100), and the second adhesive layer (600) is located within the woven surface of the first hook and loop fastener (400) on one side facing the first hook and loop fastener (400).

4. The Velcro assembly for adhesive fastening according to claim 2, characterized in that: The adhesiveness of the pressure-sensitive adhesive layer (300), the adhesiveness of the first adhesive layer (500), and the adhesiveness of the second adhesive layer (600) increase sequentially.

5. The Velcro assembly for adhesive fastening according to claim 2, characterized in that: The first adhesive layer (500), the second adhesive layer (600), and the pressure-sensitive adhesive layer (300) have the same material and thickness.

6. The Velcro assembly for adhesive fastening according to claim 5, characterized in that: The elongation of the first adhesive layer (500), the second adhesive layer (600), and the pressure-sensitive adhesive layer (300) is >200%, and the initial tack of the first adhesive layer (500), the second adhesive layer (600), and the pressure-sensitive adhesive layer (300) is >5N.

7. The Velcro assembly for adhesive fastening according to claim 1, characterized in that: The longitudinal elongation at break of the stretch film layer (200) is ≥150%, and the elastic recovery of the stretch film layer (200) is ≤50%.

8. The Velcro assembly for adhesive fastening according to claim 7, characterized in that: The stretch film layer (200) is a TPU layer or a PE layer.

9. The Velcro assembly for adhesive fastening according to claim 1, characterized in that: The thickness of the foam layer (100) is 0.3mm to 1mm, the thickness of the stretch film layer (200) is 0.02mm to 0.15mm, and the thickness of the pressure-sensitive adhesive layer (300) is 0.02mm to 0.15mm.

10. A Velcro assembly for adhesive fastening according to claim 8, characterized in that: The tensile strength of the entire structure consisting of the pressure-sensitive adhesive layer (300), the stretch film layer (200), and the foam layer (100) is > 0.3MPa, the maximum load of the whole consisting of the pressure-sensitive adhesive layer (300), the stretch film layer (200), and the foam layer (100) is >5N, and the longitudinal elongation at break of the whole consisting of the pressure-sensitive adhesive layer (300), the stretch film layer (200), and the foam layer (100) is >200%.

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