Low-odor automobile roof

Abstract

The utility model provides a low-odor automobile roof which comprises a top-layer fabric, a spunlace non-woven fabric, a first-layer glass fiber mat, a polyurethane foam board, a second-layer glass fiber mat, a hot-rolled non-woven fabric and a bottom-layer accessory which are stacked from top to bottom, the polyurethane foam board passes through roller glue, and the spunlace non-woven fabric and the first-layer glass fiber mat are stacked on the polyurethane foam board. Stacking a second layer of glass fiber mat and a hot-rolled non-woven fabric below, forming a framework through mould pressing, forming a ceiling composite semi-finished product through mould pressing of a top layer fabric and the framework through roller glue, carrying out glue edge covering on the redundant top layer fabric, and bonding and fixing a bottom layer accessory and the ceiling composite semi-finished product through hot melt glue; solvent-free polyurethane glue is adopted as fabric composite glue of the ceiling composite semi-finished product. Compared with the conventional ceiling, the low-odor automobile ceiling disclosed by the utility model has the advantages of light weight and small environmental pollution, and also has better odor performance.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile ceilings, in particular to a low-odor automobile ceiling. Background Art

[0002] As the current automotive interior decoration industry is increasingly moving towards high performance, environmental protection, low carbon and low VOC, the requirements for car ceilings are also getting higher and higher. At present, most car ceilings use an integral hardtop formed by a composite of multiple layers of materials. The base material plate generally uses PU (polyurethane) foam sheet, glass fiber, etc. The main function of car ceiling products is to improve the decorativeness of the car interior. At the same time, the interior of the ceiling can also improve the heat insulation from the outside of the car, reduce the noise inside the car, and improve the comfort and safety of the passengers.

[0003] However, cars have become an increasingly important means of transportation for people to travel frequently, and people's requirements for car performance and appearance are getting higher and higher. Traditional car interior parts have been greatly improved in appearance and appearance, but with the gradual improvement of people's health and environmental awareness, not only the appearance, fuel consumption, speed, etc. need to be considered, but people's requirements for in-car air quality are also constantly increasing, and car odor performance as an important indicator is gradually being evaluated by customers. At present, the fabric composite glue and edge glue used in car ceilings are mostly solvent glue. The solvent will evaporate and produce a pungent odor, which will make the passengers in the car feel uncomfortable, and the pungent odor will also pollute the air environment and cause bad effects. Utility Model Content

[0004] The technical problem to be solved by the utility model is how to improve the odor performance of the automobile ceiling, reduce the volatilization of irritating odors, reduce the discomfort of passengers, and protect the air environment. In order to overcome the defects of the above-mentioned prior art (or related technology), the utility model provides a low-odor automobile ceiling.

[0005] The utility model provides a low-odor automobile roof, comprising a top layer fabric, a spunlace non-woven fabric, a first layer of glass fiber felt, a polyurethane foam board, a second layer of glass fiber felt, a hot-rolled non-woven fabric and bottom layer accessories which are stacked from top to bottom, the polyurethane foam board is subjected to roller glue and the spunlace non-woven fabric and the first layer of glass fiber felt are stacked on the top, and the second layer of glass fiber felt and the hot-rolled non-woven fabric are stacked on the bottom, and a skeleton is formed by molding, the top layer fabric is molded with the skeleton by roller glue to form a composite semi-finished ceiling product, and the excess top layer fabric is glued, the bottom layer accessories are bonded and fixed to the composite semi-finished ceiling product by hot melt glue, and the fabric composite glue of the composite semi-finished ceiling product adopts solvent-free polyurethane glue.

[0006] Compared with the prior art, the low-odor automobile ceiling of the present application has the following advantages: the automobile ceiling of the present application is prepared by firstly stacking a spunlace non-woven fabric, a first layer of glass fiber felt, a second layer of glass fiber felt and a hot-rolled non-woven fabric on a polyurethane foam board by roller glue, and molding to form a skeleton; the second step is to mold the top layer of fabric with the skeleton by roller glue to form a composite semi-finished ceiling product and perform hemming; the bottom layer accessories are installed by hot melt glue to ensure the stability of the structure; and the present application adopts solvent-free polyurethane glue as the fabric composite glue between the top layer of fabric and the spunlace non-woven fabric, mainly using polyurethane as the material, and the odor is better than the solvent-based glue used in previous automobile ceilings, and there is no solvent volatilization, which can improve the odor performance of the automobile ceiling product and protect the air environment. At the same time, the reduction of irritating odor can also improve the breathing comfort of the passengers.

[0007] In a possible implementation manner, the edge binding glue of the ceiling composite semi-finished product is hot melt glue.

[0008] Compared with the prior art, after adopting the above technical solution, considering that the solvent-based glue has a strong odor, replacing it with hot-melt glue can improve the odor performance.

[0009] In a possible implementation, the hot melt adhesive is polyolefin hot melt adhesive, polyurethane hot melt adhesive, or polyamide hot melt adhesive.

[0010] Compared with the prior art, the above technical solution can further improve the odor performance of automobile ceiling products and reduce the odor. The above fabric composite glue is replaced by polyolefin hot melt adhesive, polyurethane hot melt adhesive or polyamide hot melt adhesive, thereby greatly reducing the irritating odor.

[0011] In a possible implementation, the glue between the polyurethane foam board and the first layer of glass fiber mat and the second layer of glass fiber mat is solvent-free polyurethane glue.

[0012] Compared with the prior art, the above technical solution can ensure a firm connection between the polyurethane foam board, the first layer of glass fiber felt and the second layer of glass fiber felt, while also protecting the environment and achieving environmental protection.

[0013] In a possible implementation, the top layer fabric is made of knitted fabric, suede-like fabric, knitted napped fabric, leather fabric, or non-woven fabric. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the explosion of the structure of the utility model;

[0015] Explanation of the accompanying drawings: 1. Top layer fabric; 2. Spunlace non-woven fabric; 3. First layer of glass fiber felt; 4. Polyurethane foam board; 5. Second layer of glass fiber felt; 6. Hot-rolled non-woven fabric; 7. Bottom layer accessories. DETAILED DESCRIPTION

[0016] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0017] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] See also Figure 1 The embodiment of the present application discloses a low-odor automobile ceiling, which is composed of a top layer fabric 1, a spunlace non-woven fabric 2, a first layer of glass fiber felt 3, a polyurethane foam board 4, a second layer of glass fiber felt 5, a hot-rolled non-woven fabric 6, and a bottom layer accessory 7 from top to bottom, and each layer is compounded by glue (the unmarked layer in the attached figure is glue). The automobile ceiling process is divided into two types: dry method and wet method. Compared with the dry method automobile ceiling, the wet method automobile ceiling has the advantage of being lightweight, but because of its poor odor, it has always troubled the parts factory. After analysis, it was found that the fabric composite glue is the main source of the poor odor of the automobile ceiling assembly. At present, the fabric composite glue used in the automobile ceiling is mainly solvent-based glue. The solvent in the solvent-based glue will be emitted, resulting in a pungent odor. In this application, solvent-free polyurethane glue will be used as the fabric composite glue, which has the characteristics of low odor. Compared with the traditional automobile ceiling in the past, the automobile ceiling of the present application has the advantages of lightweight product and less pollution to the production environment, and takes into account more excellent odor performance.

[0019] The car ceiling of the present application reduces odor through two changes, one of which is to replace the fabric composite glue from solvent glue to solvent-free polyurethane glue, and the other is to replace the edge glue of the ceiling composite semi-finished product from solvent glue to polyolefin hot melt glue or polyurethane hot melt glue, so as to achieve the effect of improving odor performance and reducing odor, and the hot melt glue used for the edge glue can use various types, including reactive and non-reactive types.

[0020] According to the VDA270 Odor Test Method, the odor rating of the ceiling using traditional solvent-based glue at 23°C is 3.0, the odor rating at 40°C is 3.5, and the odor rating at 80°C is 4.0; the odor rating of the PUR glue used in this embodiment is 2.5 at 23°C, 3.0 at 40°C, and 3.0 at 80°C, which are all lower and have better odor. The odor intensity rating requirements are shown in Table 1 below:

[0021] Table 1 Odor intensity rating requirements

[0022]

[0023] Continue to see Figure 1 The glue between the polyurethane foam board 4 and the first layer of glass fiber felt 3 and the second layer of glass fiber felt 5 is solvent-free polyurethane glue, which has no solvent volatilization and can improve the odor performance of the car roof product and protect the air environment.

[0024] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "in the present embodiment", "specific example", or "some examples" etc. means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0025] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A low-odor car ceiling, characterized in that: The invention comprises a top layer fabric (1), a spunlace non-woven fabric (2), a first layer of glass fiber felt (3), a polyurethane foam board (4), a second layer of glass fiber felt (5), a hot-rolled non-woven fabric (6) and a bottom layer accessory (7) stacked from top to bottom. The polyurethane foam board (4) is rolled with glue and the spunlace non-woven fabric (2) and the first layer of glass fiber felt (3) are stacked on top, and the second layer of glass fiber felt (5) and the hot-rolled non-woven fabric (6) are stacked on the bottom. The top layer fabric (1) is rolled with glue and molded with the skeleton to form a ceiling composite semi-finished product, and the excess top layer fabric (1) is glued. The bottom layer accessory (7) is bonded and fixed to the ceiling composite semi-finished product by hot melt glue. The fabric composite glue of the ceiling composite semi-finished product adopts solvent-free polyurethane glue.

2. The low-odor car ceiling according to claim 1, characterized in that: The edge binding glue of the ceiling composite semi-finished product adopts hot melt glue.

3. The low-odor car ceiling according to claim 2, characterized in that: The hot melt adhesive is polyolefin hot melt adhesive, polyurethane hot melt adhesive or polyamide hot melt adhesive.

4. The low-odor car ceiling according to claim 1, characterized in that: The glue between the polyurethane foam board (4) and the first layer of glass fiber felt (3) and the second layer of glass fiber felt (5) is solvent-free polyurethane glue.

5. The low-odor automobile ceiling according to claim 1, characterized in that: The material of the top layer fabric (1) is knitted fabric, suede-like fabric, knitted napped fabric, leather fabric or non-woven fabric.

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