Environment-friendly mute felt

Abstract

The utility model relates to an environment-friendly mute felt, and relates to the field of automobile sound insulation felts, the environment-friendly mute felt comprises a base plate and a panel, the base plate is formed by hot-pressing and compounding a plurality of bamboo fiber felts, and the panel is arranged on the surface of the base plate. The hardness and impact resistance of the automobile mute felt can be effectively improved.

Description

Technical Field

[0001] The present application relates to the field of automobile sound insulation felt, and in particular to an environmentally friendly sound-proof felt. Background Art

[0002] The interior parts of cars mainly play the role of protection, sound insulation, sound absorption and decoration, which requires that the interior parts must have a certain strength and good acoustic performance (sound insulation and sound absorption). At present, the interior of cars is developing in the direction of lightweight, beautiful and comfortable, energy-saving and environmentally friendly, and personalized. People have higher and higher requirements on the weight, strength, acoustics and structure of car interiors.

[0003] The car's carpet, front wall, door panel, shelf, trunk side carpet, and under the seat are filled with silent felt to play a role in sound insulation, sound absorption and decoration. In the prior art, common silent felt mainly includes foam sound-absorbing cotton and decorative panels, and the sound-absorbing cotton and the decorative panels are fixed by colloid bonding.

[0004] However, most of the existing felts are formed by weaving cotton and linen fibers. The formed felts are not hard enough and do not have impact resistance. When laid on some load-bearing ground, the center of the placed objects is easily offset and tilted. Utility Model Content

[0005] In order to ensure the sound insulation effect of the silent felt and at the same time improve the environmental performance of the silent felt of the car, the present application provides an environmentally friendly silent felt.

[0006] The environmentally friendly soundproof felt provided in this application adopts the following technical solution:

[0007] An environmentally friendly sound-proof felt comprises a base plate and a panel. The base plate is formed by hot-pressing a plurality of bamboo fiber felts, and the panel is arranged on the surface of the base plate.

[0008] By adopting the above technical scheme, the bamboo fiber has a relatively high hardness after lamination. Using bamboo fiber as a substrate can make the felt have strong impact resistance and compression resistance, and by frosting the surface of the substrate, it has a higher friction coefficient, so that the panel can be glued on it to avoid the misalignment of the panel and the substrate. The felt obtained by this structure can withstand the crushing of heavy objects well; at the same time, due to the unique fiber arrangement of bamboo fiber itself, pores and gaps are formed, which is conducive to the scattering and absorption of sound waves, and the hollow structure of bamboo fiber helps to increase the contact area between sound waves and fibers. Therefore, the silent felt formed by needle punching of multiple layers of bamboo fiber felt has good sound absorption performance; the panel can provide good protection for the substrate to prevent the bamboo fiber on the substrate from falling off due to friction with external components.

[0009] Preferably, the panel is formed by cross-weaving a plurality of high-density braided wires.

[0010] By adopting the above technical solution, high-density braided wires are cross-woven to form a panel, and the micropores formed between the braided wires are small. Water stains that have leaked onto the surface of the panel are difficult to penetrate through the panel into the underlying substrate, thereby achieving a good waterproof effect.

[0011] Preferably, the high-density braided wire is made of a plurality of PET fibers.

[0012] By adopting the above technical solution, the PET fiber itself has a hydrophobic effect. After a high-density braided wire formed by high-density weaving of a number of PET fibers is densely woven to form a braided layer, a waterproof effect of the braided layer can be achieved.

[0013] Preferably, the high-density braided wire is made of a plurality of cotton and linen fibers.

[0014] By adopting the above technical scheme, after the high-density braided wire formed by the high-density weaving of cotton and linen fibers is densely woven to form a braided layer, when water flows to the surface of the braided layer, the high-density cotton and linen fibers absorb water and expand, which can reduce the micropores between the cotton and linen fibers, thereby preventing water from further penetrating into the PET substrate, and achieving the waterproof effect of the braided layer.

[0015] Preferably, the panel comprises a multi-layer composite coating coated on the surface of the substrate.

[0016] By adopting the above technical solution, the composite coating on the surface of the braided layer can achieve a waterproof effect for the braided layer and provide a good protection effect for the substrate.

[0017] In summary, the environmentally friendly soundproof felt of the present application includes at least one of the following beneficial technical effects:

[0018] 1. Bamboo fiber has a relatively high hardness after lamination. Using bamboo fiber as a substrate can make the felt have strong impact resistance and compression resistance. By frosting the surface of the substrate, it has a higher friction coefficient, so that the panel can be glued on it to avoid the misalignment of the panel and the substrate. The felt obtained by this structure can withstand the rolling of heavy objects well. At the same time, due to the unique fiber arrangement of bamboo fiber itself, pores and gaps are formed, which is conducive to the scattering and absorption of sound waves, and the hollow structure of bamboo fiber helps to increase the contact area between sound waves and fibers. Therefore, the mute felt formed by needle punching of multiple layers of bamboo fiber felt has good sound absorption performance; the panel can provide good protection for the substrate to prevent the bamboo fiber on the substrate from falling off due to friction with external components;

[0019] 2. The high-density weaving process of the panel can achieve a good waterproof effect for the felt, and at the same time achieve the effect of decorative silent felt. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The embodiment of the present application is a schematic diagram for showing the overall structure of the sound-proof felt.

[0021] Explanation of the accompanying drawings: 1. substrate; 2. adhesive layer; 3. panel. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1 This application is described in further detail.

[0023] Example 1

[0024] The present application embodiment discloses an environmentally friendly sound-proof felt. Figure 1 , including a base plate 1, an adhesive layer 2 and a panel 3. The base plate 1 is formed by hot-pressing a plurality of bamboo fiber felts, and the two sides of the adhesive layer 2 are fixedly connected to the base plate 1 and the panel 3 respectively.

[0025] The adhesive layer 2 is formed by evenly spreading adhesive powder on the surface of the substrate 1 and melting it through hot air baking to form a composite panel. In some other embodiments, a hot melt adhesive film can also be used to connect the substrate 1 and the panel 2.

[0026] Since bamboo fiber itself has a unique fiber arrangement that forms pores and voids, it is helpful for scattering and absorbing sound waves, and the hollow structure of bamboo fiber helps to increase the contact area between sound waves and fibers. Therefore, the sound-absorbing felt formed by needle-punching multiple layers of bamboo fiber felt 11 has good sound-absorbing performance. Moreover, since bamboo fiber is a natural raw material, it also has the advantages of being cheap and easily available, degradable, hydrophobic, and light in weight. When the felt is dismantled and discarded, it can be recycled for reuse.

[0027] It should be noted that the panel 3 is formed by a plurality of high-density braided wires that are crossed and woven together. The high-density braided wires are crossed and woven together to form the panel 3. The micropores formed between the braided wires are small, and water stains that have leaked onto the surface of the panel 3 are difficult to penetrate through the panel 3 into the underlying substrate, thereby achieving a good waterproof effect.

[0028] PET fiber itself has a hydrophobic effect. The high-density braided wire formed by high-density weaving of several PET fibers is densely woven to form a braided layer, which can achieve a waterproof effect for the braided layer.

[0029] The implementation principle of an environmentally friendly sound-proof felt in an embodiment of the present application is as follows: bamboo fiber has a relatively high hardness after lamination, and using bamboo fiber as a substrate can make the felt have strong impact resistance and pressure resistance, and by frosting the surface of the substrate, it has a higher friction coefficient, so that the panel can be glued on it to avoid the misalignment of the panel and the substrate, and the felt obtained by this structure can withstand the crushing of heavy objects well; at the same time, due to the unique fiber arrangement of bamboo fiber itself, pores and gaps are formed, which is conducive to the scattering and absorption of sound waves, and the hollow structure of bamboo fiber helps to increase the contact area between sound waves and fibers. Therefore, the sound-proof felt formed by needle-punching of multiple layers of bamboo fiber felt has good sound absorption performance; the panel can provide good protection for the substrate to prevent the bamboo fiber on the substrate from falling off due to friction with external components.

[0030] Example 2

[0031] It should be noted that, in this embodiment, the high-density woven wire can be made of several cotton and linen fibers. When water stains fall on the surface of the felt, the cotton and linen fibers expand after being soaked in the water stains, further reducing the pores between the cotton and linen fibers and the micropores between the high-density woven wires, thereby preventing the water stains from further leaking into the underlying substrate, thereby achieving a good waterproof effect.

[0032] At the same time, when the felt is discarded, the felt base plate and the woven panel can be recycled, which is more environmentally friendly.

[0033] Example 3

[0034] In this embodiment, the panel can be replaced by coating a multi-layer composite coating (adhesive layer, isolation layer, coloring layer, polymer crystal layer, etc.) on the surface of the panel to achieve protective, waterproof and decorative effects on the substrate.

[0035] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An environmentally friendly soundproof felt, characterized in that: It comprises a base plate (1) and a panel (3); the base plate (1) is formed by hot-pressing a plurality of bamboo fiber felts, and the panel (3) is arranged on the surface of the base plate (1).

2. The environmentally friendly sound-proof felt according to claim 1, characterized in that: The surface of the substrate (1) is provided with an adhesive layer (2), the panel (3) is adhesively fixed to the surface of the adhesive layer (2), and the panel (3) is formed by cross-weaving of a plurality of high-density braided wires.

3. The environmentally friendly soundproof felt according to claim 2, characterized in that: The high-density braided wire is made of a plurality of PET fibers.

4. The environmentally friendly soundproof felt according to claim 3, characterized in that: The high-density braided wire is made of a plurality of cotton and linen fibers.

5. The environmentally friendly sound-proof felt according to claim 1, characterized in that: The panel (3) comprises a multi-layer composite coating coated on the surface of the substrate (1).

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