Facing perforated acoustic board

Abstract

The utility model belongs to the technical field of sound absorption, and particularly discloses a veneer perforated acoustic board. The veneer perforated acoustical board comprises a base layer, adhesive layers arranged on the two sides of the base layer respectively, reinforcing layers arranged on the two sides of the adhesive layers respectively, veneer layers arranged on the two sides of the reinforcing layers respectively, and a polyester fiber layer arranged on the outer side of one veneer layer. Wherein the facing layer, the reinforcing layer, the adhesive layer and the base layer are all provided with a plurality of corresponding and consistent sound absorption holes. According to the facing perforated acoustical board, on one hand, the board body made of the inorganic acoustical material containing the fiber component or the fibrous component serves as the base layer, generation and spreading of micro cracks in the pure inorganic acoustical material are restrained by means of the effects of the reinforcing layer and the adhesive layer, and the mechanical strength of the base layer is enhanced; on the other hand, the facing layer is arranged on the outer side of the base layer, and the facing effect is achieved. In addition, the facing layer made of wood fibers, the polyester fiber layer and the sound absorption holes jointly achieve resonance sound absorption, and the sound absorption performance of the board is jointly enhanced through the three-in-one mode.

Description

Technical Field

[0001] This utility model belongs to the field of sound absorption technology, specifically, it relates to a perforated sound-absorbing panel with a decorative finish. Background Technology

[0002] Noise pollution has become a global environmental problem, ranking alongside air pollution, water pollution, and solid waste pollution as one of the world's four major pollutions. With economic and technological development, agriculture and industry are becoming increasingly mechanized, and transportation is also booming; however, noise pollution is becoming increasingly severe. Currently, the main solution to noise pollution is to use sound-absorbing materials or structures for sound absorption and noise reduction.

[0003] Inorganic sound-absorbing materials are widely used due to their advantages such as fire resistance, water resistance, non-corrosiveness, non-toxicity, excellent resistance to high temperatures, and wide availability of raw materials. Sound-absorbing panels made by combining inorganic sound-absorbing materials with sound-absorbing structures have excellent sound absorption effects.

[0004] Based on the grooving and perforation methods, sound-absorbing panels are generally divided into two types: slotted wood sound-absorbing panels and perforated wood sound-absorbing panels. Slotted wood sound-absorbing panels are slit-type sound-absorbing decorative materials with grooves on the front and perforations on the back; while perforated wood sound-absorbing panels are structural sound-absorbing decorative materials with round holes on both the front and back of the panel.

[0005] Currently, there is more research on slotted wood sound-absorbing panels, while research on perforated wood sound-absorbing panels is relatively limited. "Perforated wood sound-absorbing panels," such as gypsum perforated sound-absorbing panels, have low strength due to the use of gypsum board alone, making them unable to withstand significant weight and pressure. Extra care must be taken during installation, otherwise, deformation or cracking of the inorganic board may occur. Furthermore, due to their low sound absorption strength, they often need to be used in conjunction with sound-absorbing cotton during installation. In addition, their inorganic surface makes it difficult to apply decorative finishes, thus limiting their application.

[0006] In conclusion, it is necessary to improve the structure of the perforated wood sound-absorbing panel to better meet application requirements. Utility Model Content

[0007] In order to solve the problems of weak compressive strength, easy deformation and cracking, poor sound absorption effect and difficulty in finishing of the perforated wood sound-absorbing board made of inorganic sound-absorbing material alone, this utility model improves its structure and obtains a new type of perforated sound-absorbing board with a decorative structure.

[0008] The present invention specifically adopts the following technical solution:

[0009] A perforated sound-absorbing panel includes a base layer, adhesive layers disposed on both sides of the base layer, reinforcing layers disposed on both sides of the adhesive layers, decorative layers disposed on both sides of the reinforcing layers, and a polyester fiber layer disposed on the outer side of one of the decorative layers.

[0010] The finishing layer, reinforcement layer, adhesive layer, and base layer all have a number of corresponding sound-absorbing holes.

[0011] The aforementioned "correspondence and consistency" means that when the finishing layer, reinforcement layer, adhesive layer and base layer are in a stacked state, the opening positions of the sound-absorbing holes on each layer are completely corresponding, without any deviation in position and / or size.

[0012] Preferably, the sound-absorbing holes are round, with a diameter of 3mm to 10mm and a spacing of 10mm to 25mm.

[0013] Generally, by adjusting the arrangement of different sound-absorbing holes and / or setting different hole sizes, it is possible to adjust different sound absorption frequencies and absorb different noises.

[0014] Specifically, the base layer can be any one of cement fiberboard, fiber gypsum board, or ceramic fiberboard.

[0015] Cement fiberboard is a cement board incorporating wood fibers, while fiber gypsum board is a gypsum board in which any fiber is used as a reinforcing material. Both are existing products.

[0016] Cement in cement fiberboard and gypsum in fiber gypsum board are both conventional inorganic sound-absorbing materials, mainly playing a sound-absorbing role. Such materials include silicate cement and magnesium cement. Wood fibers in cement fiberboard and fibers in fiber gypsum board play a mechanical reinforcing role.

[0017] Ceramic fiberboard, also known as aluminum silicate fiberboard, is a type of board made of fibrous aluminum silicate and is an existing product.

[0018] Ceramic fiberboard has sound absorption properties due to its porous structure and internal fibrous materials, while its internal fibrous aluminum silicate also gives it strong mechanical properties.

[0019] Generally, the thickness of the base layer should be controlled between 8mm and 10mm.

[0020] Specifically, the reinforcing layer is a structural layer formed of glass fiber mesh.

[0021] Specifically, the adhesive layer is a structural layer formed using acrylic emulsion or polyurethane as the material.

[0022] Using fiberglass mesh as a reinforcing layer gives the panel excellent reinforcement properties. Combined with an adhesive layer, acrylic emulsions or polyurethane adhesives penetrate the gaps in the reinforcing layer and come into contact with the finishing layer, thereby improving the bond strength between the reinforcing layer, the base layer, and the finishing layer.

[0023] Specifically, the veneer layer is made of wood fiberboard, which is a structural layer formed by hot pressing wood fibers mixed with adhesive. The amount of adhesive mixed does not need to be particularly limited; it is only necessary to achieve the purpose of bonding the wood fibers together.

[0024] Preferably, the adhesive can be a conventional commercially available formaldehyde-free adhesive such as isocyanate adhesive or acrylic adhesive.

[0025] Generally, the thickness of the finishing layer should be controlled at 2mm to 3mm.

[0026] Using wood fiberboard, formed by pressing wood fibers, as the surface layer has two advantages. First, its soft texture makes it easy to apply a finish, allowing the perforated sound-absorbing panel to achieve the desired effect. Second, wood fiber is a porous material, which typically has a connected pore structure. This allows sound waves to be reflected, scattered, and absorbed multiple times within the material. Due to the viscous resistance of air and the friction between air molecules and the pore walls, sound energy is converted into frictional heat energy and dissipated, thereby enhancing the sound absorption effect.

[0027] On the back side of the sound-absorbing panel, the decorative layer between the reinforcing layer and the polyester fiber layer can avoid the problem that the base layer made of inorganic materials (cement in cement fiberboard, gypsum in fiber gypsum board, and aluminum silicate in ceramic fiberboard) is not easy to bond with the polyester fiber layer (since the reinforcing layer is grid-like, the main structural layers that are actually bonded are the base layer and the polyester fiber layer); at the same time, the decorative layer can also play a sound-absorbing role.

[0028] Generally, the thickness of the polyester fiber layer can be controlled between 20mm and 50mm.

[0029] The polyester fiber layer disposed on the outer side of one side of the decorative layer also has a certain sound absorption function, which can further enhance the sound absorption effect of the perforated sound-absorbing panel. This is because ordinary sound-absorbing panels have a cavity left on the back. Sound penetrates through the holes to the back, reflects in the cavity, and forms resonance, ultimately dissipating sound energy. However, the perforated sound-absorbing panel of this invention, by placing a polyester fiber layer in the cavity thereafter, can effectively increase the friction between sound energy and polyester fibers, thereby reducing sound reflection and playing an auxiliary role in sound absorption.

[0030] At the same time, the polyester fiber layer on the back of the sound-absorbing panel can also strengthen the rigidity of the sound-absorbing panel and enhance the stability and durability of the perforated sound-absorbing panel.

[0031] The perforated sound-absorbing panel with this decorative surface provided by this utility model achieves the following beneficial effects:

[0032] 1) This perforated sound-absorbing panel has a wood fiberboard as the surface layer on the outside of the base layer. The wood fiber not only improves the surface flatness of the panel and provides excellent surface performance, but also allows for easy decorative processing on the surface. This solves the problem of surface effect requirements in general sound-absorbing panel applications and has good application prospects in the decoration field.

[0033] 2) This perforated sound-absorbing panel uses cement fiberboard, fiber gypsum board, or ceramic fiberboard as the base layer. The fiber components (such as wood fibers in cement fiberboard, any fibers in fiber gypsum board) or fibrous components (fibrous aluminum silicate in ceramic fiberboard) contained therein, combined with the reinforcing layer formed by glass fiber mesh between the base layer and the decorative layer, and the effect of the adhesive layer, can suppress the generation and spread of microcracks in simple inorganic sound-absorbing materials, greatly enhance the mechanical strength of the base layer, avoid deformation or damage during processing and installation, and solve the construction safety hazards caused by insufficient strength of the board, which makes it easy to deform and crack.

[0034] 3) This perforated sound-absorbing panel uses wood fiberboard as the surface layer and is paired with a polyester fiber layer set on the outside of the surface layer. By utilizing the sound-absorbing function of wood fibers and polyester fibers in the wood fiberboard, together with the sound-absorbing holes, resonance sound absorption is achieved, and the three-in-one structure enhances the sound absorption performance of the panel. Attached Figure Description

[0035] Figure 1 This is a side structural diagram of a perforated sound-absorbing panel according to an embodiment of the present invention;

[0036] Figure 2 This is a top view of a perforated sound-absorbing panel according to an embodiment of the present invention. Detailed Implementation

[0037] Addressing the problems of existing "perforated wood sound-absorbing boards" made solely of inorganic sound-absorbing materials, such as gypsum perforated sound-absorbing boards, which suffer from fragility, breakage, poor sound absorption, and inability to be finished, the inventors of this utility model, through long-term research on wood panels, have made structural improvements to this type of sound-absorbing board, resulting in a novel structure. This new structure not only enhances the mechanical properties of the board, avoiding damage during processing or construction, but also allows for finishing, expanding its applications in the decorative field. Furthermore, it utilizes various sound-absorbing methods to achieve resonant sound absorption, significantly improving the board's sound absorption effect.

[0038] Combination Figure 1 and Figure 2The perforated sound-absorbing panel provided in the embodiment of this utility model includes a base layer 1, adhesive layers 21 and 22 respectively disposed on both sides of the base layer 1, reinforcing layers 31 and 32 respectively disposed on the outer sides of the two adhesive layers 21 and 22, decorative layers 41 and 42 respectively disposed on the outer sides of the two reinforcing layers 31 and 32, and a polyester fiber layer 5 disposed on the outer side of one of the decorative layers 41.

[0039] The outer side refers to the direction extending to both sides from the base layer 1 as the center, that is, the side away from the base layer 1 is the outer side.

[0040] In some embodiments, the material of the base layer 1 may be cement fiberboard.

[0041] In some embodiments, the base layer 1 may be made of fiber gypsum board.

[0042] Cement fiberboard is an existing board material made primarily of cement, with wood fibers added. The cement can be various types, such as silicate cement or magnesium cement. Fiber gypsum board is an existing board material made primarily of gypsum, with any type of fiber added. Both cement and gypsum are conventional inorganic sound-absorbing materials, primarily functioning to absorb sound, while wood fibers and any fibers in fiber gypsum board provide mechanical reinforcement.

[0043] In some embodiments, the material of the base layer 1 may also be a ceramic fiberboard.

[0044] Ceramic fiberboard, also known as aluminum silicate fiberboard, is a type of board made of fibrous aluminum silicate and is an existing type of board.

[0045] Ceramic fiberboard has sound absorption properties due to its porous structure and internal fibrous materials, while its internal fibrous aluminum silicate also gives it strong mechanical properties.

[0046] The thickness of base layer 1 is generally 8mm to 10mm.

[0047] In the embodiment, both adhesive layers 21 and 22 are formed by curing acrylic emulsion as the adhesive material; and both reinforcing layers 31 and 32 are made of glass fiber mesh.

[0048] Using fiberglass mesh as reinforcing layers 31 and 32 enables the obtained sound-absorbing panel to have excellent reinforcing performance. Simultaneously, the two adhesive layers 21 and 22 allow the adhesive material to penetrate the gaps in the reinforcing layers 31 and 32 and contact the two outer finishing layers 41 and 42, thereby improving the bonding strength between the reinforcing layers, the base layer, and the finishing layers, further enhancing the overall mechanical strength of the sound-absorbing panel.

[0049] Thus, the aforementioned multi-layer composite structure has superior mechanical properties compared to perforated gypsum boards made only of inorganic sound-absorbing materials in existing technologies. It not only inhibits the spread of cracks generated by the inorganic sound-absorbing materials themselves, but also improves the mechanical strength of the entire board.

[0050] Of course, the adhesive layers 21 and 22 can also be made of other conventional commercially available adhesive materials such as polyurethane.

[0051] In this embodiment, the two decorative layers 41 and 42 are wood fiberboards formed by hot pressing wood fibers mixed with adhesive, and the thickness is generally 2mm to 3mm. It should be noted that the amount of adhesive mixed does not need to be specifically limited, because its function is only to bond the wood fibers together to facilitate hot pressing, and it will not fundamentally affect the effect of decorative layers 41 and 42.

[0052] The adhesives used to bond wood fibers can be conventional commercially available formaldehyde-free adhesives such as isocyanate adhesives or acrylic adhesives.

[0053] Using wood fiberboard as the material for the veneer layers 41 and 42 has two advantages. First, it utilizes the relatively soft material and smooth surface, which facilitates veneer treatment and achieves the desired finish. Second, the wood fibers in wood fiberboard are porous materials. Porous materials typically employ interconnected pore structures, which allow sound waves to undergo multiple reflections, scattering, and absorptions within the material. Due to the viscous resistance of air and the friction between air molecules and the pore walls, sound energy is converted into frictional heat energy and dissipated, thereby enhancing the sound absorption effect.

[0054] In the embodiment, the finishing layers 41 and 42, the reinforcing layers 31 and 32, the adhesive layers 21 and 22, and the base layer 1 are provided with a plurality of corresponding and consistent sound-absorbing holes 6.

[0055] The sound-absorbing holes 6 mentioned above are generally circular, with a diameter of 3mm to 10mm and a spacing of 10mm to 25mm. Generally, by adjusting the arrangement of different sound-absorbing holes 6 and / or setting different hole diameters, it is possible to adjust different sound absorption frequencies, thereby absorbing different noises.

[0056] In this embodiment, the thickness of the polyester fiber layer 5 is 20 mm. However, generally, the thickness of the polyester fiber layer 5 can be controlled between 20 mm and 50 mm.

[0057] Similar to the different sizes and arrangements of the sound-absorbing holes 6, the thickness of each structural layer is also related to the sound absorption effect. Those skilled in the art can adjust the thickness accordingly based on the frequency to be absorbed.

[0058] Thus, the above-mentioned porous sound-absorbing panel with decorative surface provided by this utility model utilizes the sound-absorbing functions of two types of materials, namely wood fiber in decorative layers 41 and 42 and polyester fiber in polyester fiber layer 5, and combines them with the sound-absorbing structure of sound-absorbing hole 6 to achieve resonant sound absorption, thereby enhancing the sound absorption performance of the panel in a three-in-one manner.

[0059] Although the present invention has been shown and described with reference to specific embodiments, those skilled in the art will understand that various changes in form and detail may be made herein without departing from the spirit and scope of the present invention as defined by the claims and their equivalents.

Claims

1. A faced perforated acoustic panel, characterized by, It includes a base layer, adhesive layers respectively disposed on both sides of the base layer, reinforcing layers respectively disposed on both sides of the adhesive layers, decorative layers respectively disposed on both sides of the reinforcing layers, and a polyester fiber layer disposed on the outside of one of the decorative layers; the decorative layer, reinforcing layer, adhesive layer and the base layer are all provided with a plurality of corresponding and consistent sound-absorbing holes; The base layer can be any one of cement fiberboard, fiber gypsum board, or ceramic fiberboard.

2. The facer perforated acoustic panel of claim 1, wherein, The sound-absorbing holes are round, with a diameter of 3mm to 10mm and a spacing of 10mm to 25mm.

3. The faced perforated panel of claim 1 or 2, wherein, The reinforcing layer is a structural layer formed of glass fiber mesh.

4. The faced perforated panel of claim 1 or 2, wherein, The adhesive layer is a structural layer formed from acrylic emulsion or polyurethane.

5. The faced perforated panel of claim 1 or 2, wherein, The finishing layer is made of wood fiberboard.

6. The facer perforated acoustic panel of claim 5, wherein, The thickness of the finishing layer is 2mm to 3mm.

7. The facer perforated acoustic panel of claim 1 or 2, wherein, The thickness of the base layer is 8mm to 10mm.

8. The facer perforated acoustic panel of claim 1 or 2, wherein, The thickness of the polyester fiber layer is 20mm to 50mm.

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