Sound absorbing wall cloth

Abstract

The utility model discloses sound absorption wall cloth relates to wall cloth technical field, and its technical scheme main points are: including surface layer, sound absorption layer and backing layer, one side of surface layer is equipped with the convex, is equipped with arc transition between the convex, is all seted up perforation on the convex and arc transition, and the sound absorption layer includes a plurality of polyester fiber layers, and the backing layer includes damping layer. After sound wave passes through the perforation, will be in touch with polyester fiber layer, and the more pore that forms in polyester fiber layer makes the reflection of sound wave in the pore, and causes the vibration of pore in polyester fiber, and the energy of sound wave is mostly converted into the mechanical energy of pore vibration, and the setting of arc transition makes the surface of surface layer become more complex, reduces the possibility of sound wave reflection on the original road, makes sound wave reflect to different directions, can effectively weaken the energy of sound wave and improve the possibility of sound wave passing through the perforation, and the polyester fiber layer of density gradient setting makes sound absorption layer have good absorption effect to different frequency sound wave.

Description

Technical Field

[0001] This utility model relates to the field of wallpaper technology, and more specifically, to sound-absorbing wallpaper. Background Technology

[0002] Wallpaper is a decorative product that is pasted on the wall and can provide a certain degree of protection for the wall. Most existing wallpapers are single-layered. When sound is transmitted to the wallpaper, most of the sound waves will be directly reflected, causing echoes and noise in the room.

[0003] Therefore, a new solution is needed to address this problem. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide sound-absorbing wall covering.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a sound-absorbing wall covering, comprising a surface layer, a sound-absorbing layer, and a backing layer, wherein the surface layer has several protrusions on the side facing away from the sound-absorbing layer, and an arc-shaped transition is provided between adjacent protrusions. Perforations are provided on both the protrusions and the arc-shaped transition, and the perforations extend to the sidewall of the surface layer near the sound-absorbing layer. The sound-absorbing layer comprises several polyester fiber layers, wherein the density of the polyester fiber layer bonded to the surface layer is greater than the density of the polyester fiber layer bonded to the backing layer, and the densities of the several polyester fiber layers are arranged in a gradient. The backing layer includes a damping layer bonded to the polyester fiber layers, and the damping layer is made of butyl rubber material.

[0006] The present invention is further configured such that: the backing layer includes a base layer fixed on the side of the damping layer facing away from the polyester fiber layer, and the base layer has a plurality of glue injection grooves on the side wall facing the damping layer.

[0007] The present invention is further configured such that the length direction of the glue injection groove is set along the height direction of the base layer.

[0008] The present invention is further configured such that: the side wall of the base layer facing away from the damping layer is provided with several rough portions.

[0009] The present invention is further configured such that the inner peripheral wall of the perforation is provided with a number of short hairs.

[0010] The present invention is further configured such that: the surface layer is made of viscose fiber, and the base layer is made of polyethylene film.

[0011] In summary, this utility model has the following beneficial effects: When external sound is transmitted to the surface in the form of sound waves, the sound waves can pass through the perforations and come into contact with the sound-absorbing layer. The numerous pores formed in the polyester fiber layer cause the sound waves to reflect within the pores, causing the pores in the polyester fibers to vibrate. This converts most of the sound wave energy into mechanical energy that vibrates the pores. At the same time, the arc-shaped transition makes the surface of the layer more complex, reducing the possibility of sound waves reflecting along their original path and causing them to reflect in different directions. This not only effectively weakens the sound wave energy but also increases the possibility of sound waves passing through the perforations, allowing the sound waves to be better absorbed by the sound-absorbing layer. This reduces the amount of sound waves reflected from the sound-absorbing wall covering into the air, reducing the possibility of echoes or noise in the room. The polyester fiber layer has a gradient density. The higher-density polyester fiber layer not only has a good absorption effect on high-frequency sound waves but also provides some support for the remaining polyester fiber layers, while the lower-density polyester fiber layer has a good absorption effect on low-frequency sound waves. This ensures that the sound-absorbing layer has a good absorption effect when facing sound waves of different frequencies, guaranteeing the overall noise reduction effect of the sound-absorbing wall covering. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ; Figure 3 This is a cross-sectional schematic diagram of the present invention.

[0013] In the diagram: 1. Surface layer; 2. Protrusion; 3. Arc transition; 4. Perforation; 5. Polyester fiber layer; 6. Damping layer; 7. Base layer; 8. Injection groove; 9. Rough part; 10. Short pile. Detailed Implementation

[0014] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0015] Sound-absorbing wall coverings, such as Figure 1 and Figure 3As shown, the structure sequentially includes a surface layer 1, a sound-absorbing layer, and a backing layer. The surface layer 1 has several protrusions 2 on the side facing away from the sound-absorbing layer, with an arc-shaped transition 3 between adjacent protrusions 2. Perforations 4 are formed on both the protrusions 2 and the arc-shaped transition 3, extending through to the sidewall of the surface layer 1 near the sound-absorbing layer. The sound-absorbing layer includes several polyester fiber layers 5, wherein the density of the polyester fiber layer 5 bonded to the surface layer 1 is greater than the density of the polyester fiber layer 5 bonded to the backing layer. The densities of the polyester fiber layers 5 are arranged in a gradient. Specifically, the polyester fiber layers 5 are made of polyester non-woven fabric, and polyester non-woven fabric of the same specification is hot-pressed using a hot press to form polyester fiber layers 5 of different densities. It should be noted that care should be taken during hot pressing of the hot press. Temperature control is recommended within the range of 80-100℃ to avoid focal points in the polyester fiber layer 5. Then, polyester fiber layers 5 of different densities are bonded together using adhesive dispensing technology. After bonding, irregular edges of the polyester fiber layers 5 are cut off using a cutting machine. At this point, the sound-absorbing layer is complete. The surface layer 1 is then bonded to the sound-absorbing layer using adhesive dispensing technology. The sound-absorbing layer is also bonded to the backing layer using the same adhesive dispensing process. When external sound is transmitted to the surface layer 1 as sound waves, the sound waves can pass through the perforations 4 and come into contact with the sound-absorbing layer. The numerous pores formed in the polyester fiber layer 5 cause the sound waves to reflect within the pores, inducing vibration within the pores of the polyester fibers, thus dissipating most of the sound wave energy. The energy is converted into mechanical energy that causes the holes to vibrate. Simultaneously, the arc transition 3 makes the surface of layer 1 more complex, reducing the possibility of sound waves reflecting along their original path and causing them to reflect in different directions. This not only effectively weakens the sound wave energy but also increases the likelihood of sound waves passing through the perforations 4, allowing the sound waves to be better absorbed by the sound-absorbing layer. This reduces the amount of sound waves reflected from the sound-absorbing wall covering into the air, lowering the possibility of echoes or noise in the room. The density of the polyester fiber layer 5 is set in a gradient, where the higher-density polyester fiber layer 5 not only effectively absorbs high-frequency sound waves but also provides some support for the remaining polyester fiber layers 5, while the lower-density polyester fiber layer... The 5th layer has a good absorption effect on low-frequency sound waves, so that the sound-absorbing layer can have a good absorption effect when facing sound waves of different frequencies, ensuring the overall noise reduction effect of the sound-absorbing wall covering. The backing layer includes a damping layer 6 bonded to the polyester fiber layer 5. The damping layer 6 is made of butyl rubber material. The molecular chain structure of butyl rubber is mainly based on saturated polyisobutylene, which has the characteristics of high internal loss. When the mechanical energy generated by vibration is transferred to the butyl rubber, it can be effectively converted into internal energy loss. This setting allows the damping layer 6 to convert the mechanical energy of vibration into internal energy in a timely manner when the sound-absorbing layer is subjected to sound waves, accelerating the loss of sound wave energy and further ensuring the noise reduction effect of the sound-absorbing wall covering.

[0016] like Figures 1 to 3As shown, the backing layer includes a base layer 7 fixed to the side of the damping layer 6 facing away from the polyester fiber layer 5. The base layer 7 has several injection grooves 8 on its sidewall facing the damping layer 6. The base layer 7 is made of polyethylene film. The sidewall of the base layer 7 facing away from the damping layer 6 has several rough portions 9. Specifically, during the production of the base layer 7, one extrusion roller of the polyethylene film extruder is embossed, and the other extrusion roller is provided with raised strips. The rough portions 9 mentioned above are formed on the polyethylene film at the locations where they contact the embossed areas. The area on the membrane that contacts the raised strip forms the aforementioned adhesive injection groove 8. Before fixing the damping layer 6 to the base layer 7, adhesive is applied to the base layer 7. The adhesive can be well retained in the adhesive injection groove 8, ensuring the connection strength between the damping layer 6 and the base layer 7 when the adhesive is used to fix the base layer 7 and the damping layer 6. The roughness 9 increases the roughness of the sidewall where the base layer 7 adheres to the wall, increasing the relative friction between the base layer 7 and the wall. Before the adhesive is fully cured, it reduces the friction between the base layer 7 and the wall. To prevent slippage, the polyethylene film base layer 7 has excellent moisture resistance, avoiding dampness between the base layer 7 and the wall surface and reducing mold growth on the sound-absorbing wall covering. The glue injection groove 8 is positioned along the height of the base layer 7. Furthermore, the groove 8 allows the base layer 7 to deform along its position during winding, facilitating its transport. The surface layer 1 is made of viscose fiber, with the fiber cross-section mostly being irregular serrated or... The multi-cavity structure and the loose arrangement of fibers ensure the sound absorption effect of the surface layer 1. The inner peripheral wall of the perforation 4 is provided with a number of short fibers 10. Specifically, after the surface layer 1 is formed, the perforation 4 is formed on the surface layer 1 by mechanical pinning. After the pin is pulled out and removed from the surface layer 1, the broken viscose fibers will form the aforementioned short fibers 10 on the inner peripheral wall of the perforation 4. When the sound wave passes through the perforation 4, it will cause the short fibers 10 to vibrate, which can also effectively consume the energy of the sound wave and improve the sound absorption effect of the surface layer 1.

[0017] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. Sound-absorbing wall covering, characterized in that: The material comprises a surface layer (1), a sound-absorbing layer, and a backing layer. The surface layer (1) has several protrusions (2) on the side facing away from the sound-absorbing layer. An arc transition (3) is provided between adjacent protrusions (2). Both the protrusions (2) and the arc transition (3) have perforations (4). The perforations (4) extend to the side wall of the surface layer (1) near the sound-absorbing layer. The sound-absorbing layer includes several polyester fiber layers (5). The density of the polyester fiber layer (5) that is bonded to the surface layer (1) is greater than the density of the polyester fiber layer (5) that is bonded to the backing layer. The densities of the several polyester fiber layers (5) are arranged in a gradient. The backing layer includes a damping layer (6) that is bonded to the polyester fiber layer (5). The damping layer (6) is made of butyl rubber material.

2. The sound-absorbing wall covering according to claim 1, characterized in that: The backing layer includes a base layer (7) fixed on the side of the damping layer (6) facing away from the polyester fiber layer (5), and the base layer (7) has several glue injection grooves (8) on its side wall facing the damping layer (6).

3. The sound-absorbing wall covering according to claim 2, characterized in that: The length of the glue injection groove (8) is set along the height of the base layer (7).

4. The sound-absorbing wall covering according to claim 2, characterized in that: The base layer (7) has several rough parts (9) on its sidewall facing away from the damping layer (6).

5. The sound-absorbing wall covering according to claim 1, characterized in that: The inner peripheral wall of the perforation (4) is provided with a number of short hairs (10).

6. The sound-absorbing wall covering according to claim 2, characterized in that: The surface layer (1) is made of viscose fiber, and the base layer (7) is made of polyethylene film.

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