Acoustic board

Abstract

The utility model discloses an acoustic board which comprises a sound absorption layer and a cloth layer, the cloth layer is formed on the sound absorption layer in a cold pressing mode, the sound absorption layer is made of polyester cotton, an arc-shaped bulge is formed in the middle of the acoustic board, and a pressing edge is formed on the periphery of the acoustic board. According to the utility model, the peripheral edge of the cloth layer is in arc transition towards the sound absorption layer to form the cambered surface, so that the surface of the whole sound absorption plate is not a whole plane but has a certain radian, and compared with a common plane structure, the arrangement with the radian can play a role in diffusing sound waves and can absorb more sound waves; the sound absorption effect is better; in addition, the cloth layer is formed on the sound absorption layer through cold pressing, the density of the sound absorption layer can be increased after pressing, and the sound insulation effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sound-absorbing plates, and in particular relates to a sound-absorbing plate. Background Art

[0002] As people's living standards continue to improve, higher and higher requirements are placed on the sound environment inside activity spaces such as modern buildings and cars. Noise has become an important public hazard in today's society, and its impact is constantly expanding, causing interference to people's normal life and work. Therefore, it is necessary to use sound-absorbing materials to reduce or eliminate the harm of noise; the existing sound-absorbing panels are various in design, usually composed of sound-absorbing materials and supporting structures, but most of the designs of sound-absorbing panels are simply wrapped with a sound-absorbing layer and an outer fabric, and the surface is a flat structure, which makes it difficult to ensure the sound absorption effect. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a sound absorbing board with good sound absorbing effect and good quality.

[0004] In order to solve the above technical problems, the technical solutions adopted by the utility model are as follows:

[0005] A sound absorbing board comprises a sound absorbing layer and a cloth layer, wherein the cloth layer is cold-pressed on the sound absorbing layer, the material of the sound absorbing layer is polyester cotton, an arc-shaped bulge is formed in the middle of the sound absorbing board, and a pressed edge is formed on the periphery of the sound absorbing board.

[0006] As a preferred solution of the utility model, a glue layer is provided between the fabric layer and the sound absorbing layer.

[0007] As a preferred solution of the present invention, the adhesive layer is coated on the fabric layer.

[0008] As a preferred solution of the utility model, the adhesive layer is coated on the sound absorbing layer.

[0009] As a preferred solution of the present invention, the material of the cloth layer is felt.

[0010] As a preferred solution of the present utility model, the thickness of the sound absorbing plate is 30 mm to 40 mm.

[0011] As a preferred solution of the utility model, the edge shape of the sound absorbing plate is formed by laser cutting.

[0012] Compared with the prior art, the sound absorbing board provided by the utility model has the following beneficial effects:

[0013] Since an arc-shaped bulge is formed in the middle of the sound-absorbing board and a pressed edge is formed on the periphery of the sound-absorbing board, the surface of the entire sound-absorbing board is not entirely flat, but has a certain curvature. Compared with an ordinary plane structure, this setting with a curvature can diffuse the sound waves and absorb more sound waves, with a better sound absorption effect. The formation of the pressed edge can also ensure the stability of the overall structure. In addition, the fabric layer is cold-pressed on the sound-absorbing layer, and after pressing, the density of the sound-absorbing layer can be increased, thereby improving the sound insulation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings of the embodiment will be briefly introduced below.

[0015] Figure 1 This is a schematic structural diagram of a sound-absorbing panel provided in Embodiment 1 of the utility model;

[0016] Figure 2 It is a side view of a sound absorbing board provided in the first embodiment of the utility model;

[0017] Figure 3 It is a cross-sectional view of a sound absorbing board provided in the first embodiment of the utility model;

[0018] Figure 4 It is a structural schematic diagram of a sound absorbing panel provided in the second embodiment of the utility model.

[0019] Markings in the figure:

[0020] Sound absorbing board 1; sound absorbing layer 2; fabric layer 3; pressed edge 4; adhesive layer 5. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0022] In the description of the present utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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 utility model. It should be understood that the terms "first", "second", etc. are used in the present utility model to describe various information, but such information should not be limited to these terms, which are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present utility model, the "first" information may also be referred to as the "second" information, and similarly, the "second" information may also be referred to as the "first" information.

[0023] like Figure 1 to Figure 2 As shown, a preferred embodiment of the utility model provides a sound absorbing board 1, which includes a sound absorbing layer 2 and a fabric layer 3, wherein the fabric layer 3 is cold-pressed on the sound absorbing layer 2, the material of the sound absorbing layer 2 is polyester cotton, an arc-shaped bulge is formed in the middle of the sound absorbing board 1, and a pressed edge 4 is formed on the periphery of the sound absorbing board 1.

[0024] Since an arc-shaped bulge is formed in the middle of the sound absorbing board 1 and a pressed edge 4 is formed on the periphery of the sound absorbing board 1, the surface of the entire sound absorbing board 1 is not entirely flat, but has a certain curvature. Compared with an ordinary flat structure, this setting with a curvature can diffuse the sound waves and absorb more sound waves, and the sound absorption effect is better. The formation of the pressed edge 4 can also ensure the stability of the overall structure. In addition, the fabric layer 3 is cold-pressed on the sound absorbing layer 2, and after pressing, the density of the sound absorbing layer 2 can be increased, thereby improving the sound insulation effect.

[0025] In this embodiment, the specific manufacturing process is as follows:

[0026] (a) Preheat the cold press to 180°C-190°C;

[0027] (b) preheating the sound absorbing layer 2, placing the sound absorbing layer 2 in a heating device, heating one side of the sound absorbing layer 2 for 10 minutes, and taking it out when the temperature drops to between 105° C. and 110° C. at room temperature;

[0028] (c) spraying glue on the lower surface of the fabric layer 3 or the upper surface of the sound absorbing layer 2, starting the cold press, and continuously applying pressure at a pressure of 20 MPa to 25 MPa for 4 minutes to fully combine the sound absorbing layer 2 and the fabric layer 3;

[0029] (d) Forming into desired shapes by laser cutting.

[0030] For example, Figure 3 As shown, a glue layer 5 is provided between the fabric layer 3 and the sound absorbing layer 2 .

[0031] It should also be noted that, in this embodiment, the shape of the sound absorbing board 1 is set to be circular, and the surface has a curvature, so that the entire sound absorbing board 1 itself is round and smooth, which can not only enhance the reflection of sound waves at various angles and improve the sound insulation effect, but also ensure the beauty of the overall product and strong practicality; of course, in other embodiments, such as Figure 4 As shown, the sound absorbing panel 1 can also be arranged in a rectangular form.

[0032] In actual production, the adhesive layer 5 is coated on the fabric layer 3 , or the adhesive layer 5 is coated on the sound absorbing layer 2 .

[0033] Exemplarily, the material of the cloth layer 3 is felt, and the cloth layer 3 made of felt is bonded to the sound absorbing layer 2. The felt can initially block part of the sound on the surface of the product, and the sound absorbing layer 2 can further achieve a sound insulation effect, and the sound insulation effect is strong.

[0034] Exemplarily, the thickness of the sound absorbing plate 1 is 30 mm to 40 mm. In other embodiments, the thickness of the sound absorbing plate 1 can also be set according to actual needs.

[0035] Exemplarily, the edge shape of the sound absorbing plate 1 is formed by laser cutting, which can make the cutting edge of the sound absorbing plate 1 smooth without uneven cutting edges, and has good aesthetics.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" 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 an indirect connection 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.

[0037] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A sound absorbing panel, characterized in that: It comprises a sound absorbing layer and a cloth layer, wherein the cloth layer is cold-pressed on the sound absorbing layer, the material of the sound absorbing layer is polyester cotton, an arc-shaped bulge is formed in the middle of the sound absorbing board, and a pressed edge is formed on the periphery of the sound absorbing board.

2. A sound absorbing panel according to claim 1, characterized in that: A glue layer is provided between the cloth layer and the sound absorbing layer.

3. A sound absorbing panel according to claim 2, characterized in that: The adhesive layer is coated on the cloth layer.

4. The sound absorbing panel according to claim 2, characterized in that: The adhesive layer is coated on the sound absorbing layer.

5. The sound absorbing panel according to claim 1, characterized in that: The thickness of the sound absorbing plate is 30 mm to 40 mm.

6. The sound absorbing panel according to claim 1, characterized in that: The edge shape of the sound absorbing plate is formed by laser cutting.

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