Velcro component for sticking and fixing

Abstract

The utility model discloses a Velcro component capable of being pasted and fixed, which comprises a foam layer, a stretching film layer is pasted on the surface of one side of the foam layer, a pressure-sensitive adhesive layer used for being attached to a to-be-installed surface is pasted on the stretching film layer, a first Velcro is pasted on the surface of the other side of the foam layer, and a second Velcro is pasted on the surface of the other side of the foam layer. The lower ends of the pressure-sensitive adhesive layer and the stretching film layer are connected with the stretching holding part. The attachment degree between the pressure-sensitive adhesive layer and the to-be-mounted surface is improved through the arrangement of the foam layer, the foam layer is directly bonded with the woven surface of the first hook-and-loop fastener to prevent the first hook-and-loop fastener from falling off easily, and when a user applies force to the stretching holding part, the stretching film layer is driven to stretch and deform together with the pressure-sensitive adhesive layer. Due to the fact that the foam layer is tightly combined with the woven face of the first hook-and-loop fastener, the foam layer and the stretching film layer are peeled off along the contact position, the pressure-sensitive adhesive layer can be completely peeled off from the face to be installed by applying small external force, and the effects that the first hook-and-loop fastener is stably adhered, and the first hook-and-loop fastener is completely peeled off from the face to be installed through proper pulling force are achieved.

Description

Technical Field

[0001] The utility model relates to a Velcro assembly for pasting and fixing. Background Art

[0002] At present, in terms of household products, due to the upsurge of vertical space utilization, pressure-sensitive adhesive has been widely used in products such as hooks and wall storage baskets due to its advantages such as removable without residual adhesive and good bonding performance. When removing pressure-sensitive adhesive, it only needs to be stretched to a certain extent, and the adhesive strip will lose its adhesiveness and can be completely detached from the wall without leaving residual adhesive that is difficult to clean or damaging the wall. However, when dealing with small bumps or pits on the wall, the pressure-sensitive adhesive cannot completely adhere to the wall, thus affecting the adsorption strength of the pressure-sensitive adhesive.

[0003] Therefore, in the prior art, a pressure-sensitive adhesive is placed on the foam layer, and the foam layer is used to enhance the effect of the pressure-sensitive adhesive adhering to the wall. However, since the toughness and elongation at break of the foam layer and the pressure-sensitive adhesive are different, when the pressure-sensitive adhesive is stretched, the foam layer is also stretched. During the stretching process, the foam layer cannot be stretched to the required length with the pressure-sensitive adhesive and will break. A part of the pressure-sensitive adhesive is not stretched to lose its adhesiveness, resulting in part of the pressure-sensitive adhesive and the foam layer remaining on the wall.

[0004] To this end, the applicant disclosed in the patent document with patent announcement number CN217757318U that a cooperative film layer is provided between the foam layer and the pressure-sensitive adhesive layer, and the cooperative film layer is used to drive the foam layer and the corresponding pressure-sensitive adhesive layer to stretch and deform as a whole, which helps the pressure-sensitive adhesive layer to completely deform and lose its stickiness, making it easier to completely remove the pressure-sensitive adhesive layer from the wall. In actual applications, in order to facilitate the rapid installation and removal of objects from the wall, see Figure 1Usually, one side of the adhesive component is fixed to the wall through the pressure-sensitive adhesive layer 300, and the other side is bonded to the first Velcro 400 through the pressure-sensitive adhesive layer 300. The object is correspondingly provided with a second Velcro 800 that matches the first Velcro 400. The second Velcro 800 of the object is removed from the first Velcro 400 to achieve the disassembly function. Among them, the front side of the first Velcro 400 is a hook side or a fleece side, and the back side of the first Velcro 400 is a woven side. The woven side and the pressure-sensitive adhesive layer 300 are bonded together. Since the trajectory of the woven line of the woven surface fluctuates up and down, the contact area between the woven surface and the pressure-sensitive adhesive layer 300 is extremely limited, resulting in the first Velcro 400 being easily fallen off from the adhesive component when it is subjected to a small load. If the viscosity of the pressure-sensitive adhesive layer 300 is increased to increase the bonding force between the woven surface of the first Velcro 400 and the pressure-sensitive adhesive layer 300 to prevent the first Velcro 400 from falling off easily, the pressure-sensitive adhesive layer 300 will be attached to the woven surface and the cooperating surface on both sides. The adhesive force of the same film layer 10 is relatively large. In the process of stretching the adhesive component downward, the cooperative film layer 10 close to the first Velcro 400 is stretched and deformed to make the pressure-sensitive adhesive layer 300 thereon lose its adhesiveness. It is necessary to overcome the adhesive force of the pressure-sensitive adhesive layer 300 acting on the first Velcro 400. It is necessary to apply a pulling force greater than the conventional use to peel the adhesive component from the wall. There is even a situation where the adhesive force between the pressure-sensitive adhesive layer 300 and the first Velcro 400 is greater than the structural strength of the cooperative film layer 10 itself. At this time, the cooperative film layer 10 close to the first Velcro 400 will be directly pulled off, resulting in a very poor user experience. Therefore, if the adhesive force of the pressure-sensitive adhesive layer 300 between the cooperative film layer 10 and the first Velcro 400 is too large or too small, different problems will occur, and it is also difficult to achieve a good user experience through the debugging method. The utility model is to address the above problems and propose a Velcro component that can not only stick to the first Velcro 400, but also can be completely peeled off from the wall with appropriate pulling force. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, one of the purposes of the utility model is to provide a Velcro assembly that can not only adhere to the first Velcro firmly, but also can be completely peeled off from the surface to be installed with appropriate pulling force.

[0006] According to an embodiment of the utility model, a Velcro assembly for pasting and fixing includes: a foam layer, a stretch film layer bonded to one side surface of the foam layer, a pressure-sensitive adhesive layer for attaching to a surface to be installed bonded to the stretch film layer, and a first Velcro bonded 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, and 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] According to the embodiment of the utility model, a Velcro assembly for pasting and fixing has at least the following beneficial effects:

[0008] The Velcro assembly of the above structure utilizes the foam layer to improve the fit between the pressure-sensitive adhesive layer and the surface to be installed, and also utilizes the foam layer to directly bond with the woven surface of the first Velcro to prevent the first Velcro from falling off easily. When the user applies force to the stretch grip, the stretch film layer and the pressure-sensitive adhesive layer are stretched and deformed together. Although the stretch film layer has a movement tendency to drive the foam layer to stretch and deform together, due to the tight bonding between the foam layer and the woven surface of the first Velcro, the foam layer and the stretch film layer are peeled off along the contact position between the foam layer and the stretch film layer. The pressure-sensitive adhesive layer can be completely peeled off from the surface to be installed by applying a small external force without causing the pressure-sensitive adhesive layer and the stretch film layer to break. Finally, the effect of not only sticking the first Velcro firmly but also being able to be completely peeled off from the surface to be installed with appropriate pulling force is achieved.

[0009] In some embodiments of the present invention, the foam layer is bonded to the stretch film layer by a first adhesive layer, the foam layer is bonded to the first Velcro 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 to the bottom of the first Velcro to constitute at least part of the stretch grip portion.

[0010] In some embodiments of the present invention, a portion of the second adhesive layer facing the foam layer is fused to the foam layer, and a portion of the second adhesive layer facing the first Velcro is located within the woven surface of the first Velcro.

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

[0012] In some embodiments of the present invention, the materials and thicknesses of the first adhesive layer, the second adhesive layer, and the pressure-sensitive adhesive layer are consistent.

[0013] In some embodiments of the present invention, the elongation of the first adhesive layer, the second adhesive layer and the pressure-sensitive adhesive layer is greater than 200%, and the initial adhesion of the first adhesive layer, the second adhesive layer and the pressure-sensitive adhesive layer is greater than 5N.

[0014] In some embodiments of the present invention, the longitudinal elongation at break 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 invention, the stretch film layer is a TPU layer or a PE layer.

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

[0017] In some embodiments of the present invention, the tensile strength of the whole composed of the pressure-sensitive adhesive layer, the stretch film layer, and the foam layer is greater than 0.3MPa, the maximum load of the whole composed of the pressure-sensitive adhesive layer, the stretch film layer, and the foam layer is greater than 5N, and the longitudinal elongation at break of the whole composed of the pressure-sensitive adhesive layer, the stretch film layer, and the foam layer is greater than 200%.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 It is a structural schematic diagram of an existing Velcro assembly having a first Velcro;

[0021] Figure 2 It is a structural schematic diagram of an embodiment of the Velcro assembly of the utility model;

[0022] Figure 3 yes Figure 2 Schematic diagram for testing shear resistance. DETAILED DESCRIPTION

[0023] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0024] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientations or positional relationships indicated by terms such as "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside", etc., are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] See also Figure 2 The utility model discloses a Velcro assembly for pasting and fixing, comprising: a foam layer 100, a stretch film layer 200 bonded to one side surface of the foam layer 100, a pressure-sensitive adhesive layer 300 for attaching to a surface to be installed bonded to the stretch film layer 200, a first Velcro 400 bonded 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 both connected to a stretch gripping portion 700, when the stretch gripping portion 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.

[0028] The surface to be installed is usually a wall, but it can also be other relatively smooth surfaces. Figure 2When the pressure-sensitive adhesive layer 300 of the above-mentioned Velcro assembly is attached to the wall, the foam layer 100 can improve the fit between the pressure-sensitive adhesive layer 300 and the wall. At the same time, the foam layer 100 is directly bonded to the woven surface of the first Velcro 400, which is also beneficial for the colloid between the foam layer 100 and the woven surface of the Velcro to increase the contact area with the woven surface, thereby preventing the first Velcro 400 from falling off easily. When the user applies force to the stretch grip 700, the stretch film layer 200 can be stretched and deformed together with the pressure-sensitive adhesive layer 300. At this time, the stretch film layer 200 has a movement tendency to stretch and deform together with the foam layer 100. However, due to the tight combination between the foam layer 100 and the woven surface of the first Velcro 400, the foam layer 100 cannot be stretched and deformed along with the stretch film layer 200. The foam layer 100 and the stretch film layer 200 can be peeled off along the contact position between the foam layer 100 and the stretch film layer 200, that is, when the pressure-sensitive adhesive layer 300 is separated from the wall, the foam layer 100 and the first Velcro 400 are combined. The whole is separated from the stretch film layer 200, and a thin layer of foam is adhered to the stretch film layer 200, so that the colloid between the foam layer 100 and the stretch film layer 200 also loses its viscosity. The external force required for the user to peel the Velcro assembly from the wall is basically equal to the external force required to peel off the single-layer pressure-sensitive adhesive layer 300, that is, the pressure-sensitive adhesive layer 300 can be completely peeled off from the surface to be installed by applying a smaller external force, and the pressure-sensitive adhesive layer 300 and the stretch film layer 200 will not be broken, and finally the effect of being able to stick the first Velcro 400 firmly and being able to be completely peeled off from the surface to be installed with appropriate pulling force is achieved. It can be understood that when disassembling the Velcro assembly of the above structure, since the foam layer 100 and the first Velcro 400 are separated from the other parts of the Velcro assembly as a whole, the foam layer 100 and the first Velcro 400 can be connected by a colloid with strong viscosity, and the normal use of the Velcro assembly will not be affected.

[0029] See also Figures 1 to 3 ,Will Figure 1 The Velcro assembly shown in the figure and the Velcro assembly of the embodiment of the utility model are subjected to a comparative test of the shear resistance, and the test method is: Figure 1 The first Velcro of the Velcro assembly shown and the Velcro assembly of the embodiment of the utility model are respectively bonded to two hooks 810 with second Velcro 800, and then weights 900 are gradually applied to the hooks 810 to test the critical value weight that causes the weight 900 to fall within 30 seconds. The following results are obtained: Figure 1When the Velcro assembly shown is applied to a weight 900 of 8 kg, the first Velcro, the second Velcro 800, the hook member 810 and the weight are separated from the other parts as a whole, and the separation surface is the bonding surface between the first Velcro and the Velcro assembly; when the Velcro assembly of the utility model embodiment is applied to a weight 900 of 12 kg, the foam layer, the first Velcro, the second Velcro 800, the hook member 810 and the weight 900 are separated from the other parts as a whole, and the separation surface is the boundary between the stretch film layer 200 and the foam layer 100; it can be seen that the Velcro assembly of the utility model embodiment is compared with Figure 1 Compared to the technology shown, it has a higher shear resistance and thus increases the load capacity.

[0030] In addition, it should be noted that in the production process, Figure 1 After the layered structure of the Velcro assembly shown, it needs to be cut into a certain size. At this time, the lower edge of the first Velcro 400 will produce fine spikes. When the Velcro assembly with this structure is stretched, it is easy to cut the adhesive layer between the first Velcro 400 and the cooperative film layer, resulting in a breakage phenomenon. Since the first Velcro 400 and the foam layer 100 of the embodiment of the utility model are separated from the other parts of the Velcro assembly as a whole, even if the edge of the first Velcro 400 produces fine spikes, the above problem will not occur during stretching. It can be seen that the Velcro assembly of the utility model solves multiple problems existing in the prior art at one time, which is very clever.

[0031] See also Figure 2In some embodiments of the utility model, 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 Velcro 400 by a second adhesive layer 600. In order to facilitate production and user use, 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 to the bottom of the first Velcro 400 to form at least part of the stretch gripping portion 700. When the Velcro 400 needs to be When peeling the sticker assembly from the wall, just pinch the rest of the part except the first Velcro 400, and then stretch it downward. At this time, the foam layer 100 and the second adhesive layer 600 will first break near the lower edge of the first adhesive layer 500, and then the pressure-sensitive adhesive layer 300, the stretch film layer 200 and the first adhesive layer 500 will continue to stretch and deform downward as a whole. The first adhesive layer 500 will be separated from the foam layer 100 along the contact position between the two. After being separated from the foam layer 100, a thin layer of foam is still adhered to the first adhesive layer 500, and this thin layer of foam falls off from the surface of the foam layer 100. The contact position between the first adhesive layer 500 and the foam layer 100 can be a contact interface or a layered structure with a certain thickness. For example, in the above embodiment, a thin layer of foam is adhered to the first adhesive layer 500 when it is separated, that is, the actual position where the first adhesive layer 500 and the foam layer 100 are separated is not the contact surface between the two, but the position where the contact surface between the two is slightly offset in the thickness direction of the foam layer 100. At this time, the contact position between the first adhesive layer 500 and the foam layer 100 can be regarded as a layered structure with a certain thickness. It should be noted that in order to prevent the user's skin from contacting the sticky substance of the pressure-sensitive adhesive layer 300 and the second adhesive layer 600, paper material 710 is pasted on the surface of the pressure-sensitive adhesive layer 300 and the second adhesive layer 600.

[0032] In some embodiments of the present invention, the side of the second adhesive layer 600 facing the foam layer 100 is partially fused to the foam layer 100, and the side of the second adhesive layer 600 facing the first Velcro 400 is partially located within the woven surface of the first Velcro 400. It can be understood that the foam layer 100 has a certain elastic deformation ability along its thickness direction, and the surface of the foam layer 100 is uneven under the microscopic state, the second adhesive layer 600 is conducive to partially fusion with the foam layer 100, and the uneven surface of the foam layer 100 is also conducive to the second adhesive layer 600 partially entering the woven surface of the first Velcro 400, so that the foam layer 100, the second adhesive layer 600 and the first Velcro 400 are firmly connected.

[0033] In some embodiments of the present invention, the viscosity of the pressure-sensitive adhesive layer 300, the viscosity of the first adhesive layer 500, and the viscosity of the second adhesive layer 600 increase in sequence. It can be understood that the greater viscosity of the second adhesive layer 600 helps to firmly adhere the first Velcro 400 to the foam layer 100, while the smaller viscosity of the pressure-sensitive adhesive layer 300 is not easy to damage the surface of the wall, and has a good protective effect for wallpaper or wall coating.

[0034] See also Figure 2 In some embodiments of the present invention, the material and thickness of the first adhesive layer 500, the second adhesive layer 600 and the pressure-sensitive adhesive layer 300 are consistent. 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 conducive to rapid production and manufacturing without switching to another process for production.

[0035] In some embodiments of the utility model, in order 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 greater than 200%. In order to ensure the structural stability of the Velcro assembly and the load capacity of bonding to the surface to be installed, the initial adhesion of the first adhesive layer 500, the second adhesive layer 600 and the pressure-sensitive adhesive layer 300 is greater than 5N. It should be noted that the initial adhesion refers to the viscosity that the adhesive tape can show when it first contacts the adherend. The initial adhesion 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 adherend. The test method for the initial adhesion is to measure the separation force after the annular 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 can ensure that the stretch film layer 200 will not break before the pressure-sensitive adhesive layer 300 is stretched to lose its stickiness, and when the elastic recovery of the stretch film layer 200 meets the above requirements, it can prevent the stretch film layer 200 from rebounding to 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 understandable that the stretch film layer 200 made of TPU and PE materials can meet the requirements of longitudinal elongation at break of the stretch film layer 200 ≥ 150% and elastic recovery ≤ 50%, and these two materials are easy to obtain and relatively low in cost.

[0038] As the preferred range of the present invention, the thickness of the foam layer 100 is 0.3mm-1mm, the thickness of the stretch film layer 200 is 0.02mm-0.15mm, and the thickness of the pressure-sensitive adhesive layer 300 is 0.02mm-0.15mm. After testing, when the foam layer 100, the stretch film layer 200, and the pressure-sensitive adhesive layer 300 meet the above thickness size ranges, the Velcro assembly has a better load-bearing capacity and is easy to be completely peeled off from the wall.

[0039] In some embodiments of the utility model, the tensile strength of the whole composed of the pressure-sensitive adhesive layer 300, the stretch film layer 200, and the foam layer 100 is greater than 0.3MPa, the maximum load of the whole composed of the pressure-sensitive adhesive layer 300, the stretch film layer 200, and the foam layer 100 is greater than 5N, and the longitudinal elongation at break of the whole composed of the pressure-sensitive adhesive layer 300, the stretch film layer 200, and the foam layer 100 is greater than 200%. It should be noted that in daily home life, the weight of small objects hung on the wall is mostly ≤0.5kg, so the Velcro assembly needs to meet the maximum load of >5N, and the longitudinal elongation at break of the whole composed of the pressure-sensitive adhesive layer 300, the stretch film layer 200, and the foam layer 100 is greater than 200%, which is conducive to ensuring 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 lose its stickiness, thereby ensuring easy-to-tear performance.

[0040] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, 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 the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A Velcro assembly for pasting and fixing, characterized in that: include: A foam layer (100), a stretch film layer (200) is bonded to one side surface of the foam layer (100), a pressure-sensitive adhesive layer (300) for attaching to a surface to be installed is bonded to the stretch film layer (200), a first Velcro (400) is bonded 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 both connected to a stretch grip portion (700), and when the stretch grip portion (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 the contact position between the two.

2. The Velcro assembly for adhesive fixation according to claim 1, characterized in that: The foam layer (100) and the stretch film layer (200) are bonded together via a first adhesive layer (500), and the foam layer (100) and the first Velcro (400) are bonded together via 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 to below the first Velcro (400) to form at least part of the stretch gripping portion (700).

3. The Velcro assembly for adhesive fixation according to claim 2, characterized in that: A portion of the second adhesive layer (600) facing the foam layer (100) is fused to the foam layer (100), and a portion of the second adhesive layer (600) facing the first Velcro (400) is located within the woven surface of the first Velcro (400).

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

5. The Velcro assembly for adhesive fixation according to claim 2, characterized in that: The materials and thickness dimensions of the first adhesive layer (500), the second adhesive layer (600) and the pressure-sensitive adhesive layer (300) are consistent.

6. The Velcro assembly for adhesive fixation 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 greater than 200%, and the initial adhesion of the first adhesive layer (500), the second adhesive layer (600) and the pressure-sensitive adhesive layer (300) is greater than 5N.

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

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

Images