Automobile sound insulation pad with moisture-proof function

Abstract

This utility model relates to the field of automotive sound insulation pad technology, and discloses an automotive sound insulation pad with moisture-proof function, including a sound insulation pad body, a base layer inside the sound insulation pad body, and a sound insulation layer, a moisture-proof layer, and a protective layer arranged sequentially on the base layer. The advantages of this utility model are: by setting an aluminum foil composite film as a moisture-proof layer, it can effectively block the intrusion of external moisture; combined with the use of waterproof polyurethane adhesive, it further enhances the moisture-proof ability of the sound insulation pad, preventing the sound insulation material from becoming damp and deteriorating, and ensuring sound insulation effect and a healthy in-vehicle environment.

Description

Technical Field

[0001] This utility model relates to the field of automotive sound insulation pad technology, specifically to an automotive sound insulation pad with moisture-proof function. Background Technology

[0002] In the manufacturing and use of automobiles, automotive sound insulation mats are key components for enhancing driving comfort, and their performance directly impacts the user experience. Sound insulation mats effectively block external noise, engine noise, and tire noise during vehicle operation, creating a quiet environment inside the car. However, existing automotive sound insulation mats have several problems in practical applications. Firstly, ordinary sound insulation mats have poor moisture resistance. In humid environments or when condensation occurs due to temperature changes inside the car, moisture easily penetrates the mat, causing the sound insulation material to become damp and deteriorate. This not only reduces the sound insulation effect but may also lead to mold growth, affecting the air quality inside the car and the health of passengers. Secondly, traditional sound insulation mats lack structural strength and wear resistance, easily experiencing wear and deformation over long-term use, shortening their lifespan and increasing replacement costs. Furthermore, the stability of the sound insulation mats inside the vehicle needs improvement; they are prone to displacement due to vehicle vibrations, affecting their effectiveness. Therefore, there is an urgent need to design an automotive sound insulation mat with good moisture resistance, structural stability, and durability to meet market demands. Utility Model Content

[0003] The purpose of this invention is to provide a car sound insulation pad with moisture-proof function to solve the problems of poor moisture-proof performance, low structural strength, insufficient wear resistance and poor stability of existing car sound insulation pads.

[0004] To achieve the above-mentioned utility model objectives, the technical solution provided by this utility model is as follows: a car sound insulation pad with moisture-proof function, comprising a sound insulation pad body, wherein a base layer is provided inside the sound insulation pad body, and a sound insulation layer, a moisture-proof layer and a protective layer are sequentially arranged above the base layer;

[0005] The base layer is made of high-density polyethylene sheet;

[0006] The sound insulation layer is made of polyester fiber sound-absorbing cotton;

[0007] The moisture-proof layer is an aluminum foil composite film;

[0008] The protective layer is made of wear-resistant PVC coating.

[0009] Furthermore, a first adhesive layer is provided between the base layer and the sound insulation layer, and the first adhesive layer is made of waterproof polyurethane adhesive.

[0010] Furthermore, a second adhesive layer is provided between the sound insulation layer and the moisture-proof layer, and the second adhesive layer is a hot melt adhesive film.

[0011] Furthermore, a reinforcing mesh is provided between the moisture-proof layer and the protective layer, and the reinforcing mesh is made of glass fiber.

[0012] Furthermore, the bottom of the base layer is provided with anti-slip protrusions, which are distributed in an array.

[0013] Furthermore, the aluminum foil thickness of the aluminum foil composite film is 10-20 micrometers.

[0014] Furthermore, the thickness of the wear-resistant PVC coating is 0.2-0.5 mm.

[0015] The advantages of this utility model compared with the prior art are: excellent moisture-proof performance: by setting an aluminum foil composite film as a moisture-proof layer, it can effectively block the intrusion of external moisture. Combined with the use of waterproof polyurethane adhesive, it further enhances the moisture-proof ability of the sound insulation pad, avoids the sound insulation material from getting damp and deteriorating, and ensures the sound insulation effect and a healthy in-vehicle environment.

[0016] Excellent sound insulation: The sound insulation layer made of polyester fiber sound-absorbing cotton can effectively absorb and block noise, providing a quiet and comfortable driving environment in the car.

[0017] High structural strength and durability: The design of high-density polyethylene base layer, glass fiber reinforcing mesh and wear-resistant PVC coating enhances the overall strength and wear resistance of the sound insulation pad, extends its service life and reduces replacement costs.

[0018] High installation stability: The anti-slip raised design on the bottom of the base layer makes the sound insulation pad more stable when installed inside the vehicle, and it is not easy to shift due to vehicle bumps, thus ensuring the effect of use. Attached Figure Description

[0019] Appendix Figure 1 This is a schematic diagram of the main structure of a car sound insulation pad with moisture-proof function according to this utility model;

[0020] Appendix Figure 2 This is a cross-sectional view of the main body of a car sound insulation pad with moisture-proof function according to this utility model.

[0021] As shown in the figure: 1. Sound insulation pad body; 2. Base layer; 3. Sound insulation layer; 4. Moisture-proof layer; 5. Protective layer. Detailed Implementation

[0022] To make the content of this utility model easier to understand, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Identical components are represented by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0023] Combined with appendix Figure 1 To be continued Figure 2 A car sound insulation pad with moisture-proof function includes a sound insulation pad body 1, a base layer 2 inside the sound insulation pad body 1, and a sound insulation layer 3, a moisture-proof layer 4 and a protective layer 5 arranged sequentially on the base layer 2.

[0024] The base layer 2 is made of high-density polyethylene (HDPE) sheet; HDPE sheet has good strength and toughness, which can provide a stable support structure for the sound insulation pad.

[0025] The sound insulation layer 3 is made of polyester fiber sound-absorbing cotton; polyester fiber sound-absorbing cotton has excellent sound absorption performance and can effectively absorb and block noise.

[0026] The moisture-proof layer 4 is an aluminum foil composite film; the aluminum foil composite film can form a moisture-proof barrier to prevent moisture from penetrating into the sound insulation pad.

[0027] The protective layer 5 is made of wear-resistant PVC coating, which can enhance the wear resistance of the sound insulation pad and extend its service life.

[0028] Furthermore, a first adhesive layer is provided between the base layer 2 and the sound insulation layer 3. The first adhesive layer is made of waterproof polyurethane adhesive. The waterproof polyurethane adhesive can not only achieve a firm bond between the base layer and the sound insulation layer, but also has good waterproof performance to prevent moisture from penetrating from the adhesive joint.

[0029] Furthermore, a second adhesive layer is provided between the sound insulation layer 3 and the moisture-proof layer 4. The second adhesive layer is made of hot melt adhesive film, which can melt rapidly under heating conditions to achieve a tight fit between the sound insulation layer and the moisture-proof layer, ensuring the stability between the layers.

[0030] Furthermore, a reinforcing mesh is provided between the moisture-proof layer 4 and the protective layer 5. The reinforcing mesh is made of glass fiber, which can significantly enhance the structural strength of the sound insulation pad, making it less prone to deformation and damage when subjected to external pressure or friction.

[0031] Furthermore, the bottom of the base layer 2 is provided with anti-slip protrusions, which are distributed in an array. The anti-slip protrusions can increase the friction between the sound insulation pad and the vehicle mounting surface, and prevent the sound insulation pad from shifting during vehicle operation.

[0032] Furthermore, the aluminum foil thickness of the aluminum foil composite film is 10-20 micrometers.

[0033] Furthermore, the thickness of the wear-resistant PVC coating is 0.2-0.5 mm.

[0034] The specific implementation of this utility model: The base layer is made of high-density polyethylene (HDPE) sheet, cut to the required size. A sound insulation layer made of polyester fiber sound-absorbing cotton is bonded to the base layer using a waterproof polyurethane adhesive. Next, an aluminum foil composite film (10 micrometers thick) is adhered to the sound insulation layer as a moisture-proof layer using hot melt adhesive. A reinforcing mesh of fiberglass is laid on top of the moisture-proof layer, and finally, a 0.2 mm thick wear-resistant PVC coating is applied to the surface of the reinforcing mesh to form a protective layer. Anti-slip protrusions are pressed into the bottom of the base layer using a mold in an array.

[0035] The above description is only a preferred embodiment of this utility model patent and is not intended to limit this utility model patent. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this utility model patent should be included within the protection scope of this utility model patent.

Claims

1. A car soundproofing mat having a moisture-proof function, comprising a soundproofing mat main body (1), characterized in that, The sound insulation pad body (1) has a base layer (2) inside, and a sound insulation layer (3), a moisture-proof layer (4) and a protective layer (5) are arranged on the top of the base layer (2); The base layer (2) is made of high-density polyethylene (HDPE) sheet; The sound insulation layer (3) is made of polyester fiber sound-absorbing cotton; The moisture-proof layer (4) is an aluminum foil composite film; The protective layer (5) is made of wear-resistant PVC coating.

2. The automobile sound insulation mat with moisture-proof function according to claim 1, characterized in that, A first adhesive layer is provided between the base layer (2) and the sound insulation layer (3), and the first adhesive layer is made of waterproof polyurethane adhesive.

3. The automobile soundproofing mat with moisture-proof function according to claim 1, characterized in that, A second adhesive layer is provided between the sound insulation layer (3) and the moisture-proof layer (4), and the second adhesive layer is a hot melt adhesive film.

4. The automobile soundproofing mat with moisture-proof function according to claim 1, characterized in that, A reinforcing mesh is provided between the moisture-proof layer (4) and the protective layer (5), and the reinforcing mesh is made of glass fiber.

5. A car sound insulation mat with moisture-proof function according to claim 1, characterized in that, The bottom of the base layer (2) is provided with anti-slip protrusions, which are distributed in an array.

6. The automobile soundproofing mat with moisture-proof function according to claim 1, characterized in that, The aluminum foil composite film has an aluminum foil thickness of 10-20 micrometers.

7. The automobile soundproofing mat with moisture-proof function according to claim 1, characterized in that, The thickness of the wear-resistant PVC coating is 0.2-0.5 mm.

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