Automotive headliner fabric construction that resists sticking

Abstract

This invention provides a car roof fabric structure that is not prone to sticking to the mold. From top to bottom, it includes an upper fiberglass layer, a polyurethane layer, and a lower fiberglass layer. A waterproof non-woven fabric is fixedly installed on the upper fiberglass layer to cover the top wall, and the top wall of the waterproof non-woven fabric is used for spraying release agent. A separator film is fixedly installed on the lower fiberglass layer to cover the bottom wall. The waterproof non-woven fabric, which separates the upper fiberglass layer from the upper mold, serves two purposes: firstly, it prevents the adhesive that has already seeped to the top wall of the upper fiberglass layer from continuing to seep upwards, thus preventing the adhesive from sticking to the upper mold; secondly, it prevents the release agent sprayed onto the top wall of the waterproof non-woven fabric from seeping downwards, thus retaining the release agent on the top wall of the waterproof non-woven fabric and preventing sticking to the mold. The lower fiberglass layer is covered with a diaphragm to prevent the glue that has seeped down to the bottom wall of the lower fiberglass layer from continuing to seep down, thus preventing the glue from sticking to the lower mold.

Description

Technical Field

[0001] This utility model relates to the field of automobile roof manufacturing, and in particular to an automobile roof fabric structure that is not easily stuck to the mold. Background Technology

[0002] like Figure 1 As shown, the existing canopy fabric structure consists of an upper fiberglass layer 1, a polyurethane layer 2, and a lower fiberglass layer 3 from top to bottom. The manufacturing process is as follows: the polyurethane layer 2 with adhesive applied to its bottom surface is stacked on the lower fiberglass layer 3; then the upper fiberglass layer 1 with adhesive applied to its bottom surface is stacked on the polyurethane layer 2; finally, the upper fiberglass layer 1, polyurethane layer 2, and lower fiberglass layer 3 are placed in a pressing device and pressed to form the structure. The drawback of the existing technology is that if too much adhesive is applied, the adhesive on the bottom surface of the upper fiberglass layer 1 is easily pressed upwards by the upper mold and penetrates to the top surface of the upper fiberglass layer 1, causing it to stick to the upper mold; similarly, the adhesive on the bottom surface of the polyurethane layer 2 is easily pressed downwards by the lower mold and penetrates to the bottom wall of the lower fiberglass layer 3, causing it to stick to the lower mold. Utility Model Content

[0003] The present invention aims to provide a structure for automotive headliner fabric that is less prone to sticking to the mold.

[0004] The structure of the car roof fabric that is not easy to stick to the mold includes, from top to bottom, an upper fiberglass layer, a polyurethane layer and a lower fiberglass layer. The upper fiberglass layer is fixed with a waterproof non-woven fabric to cover the top wall, and the waterproof non-woven fabric top wall is used for spraying release agent; the lower fiberglass layer is fixed with a diaphragm film to cover the bottom wall.

[0005] Furthermore, the separator film comprises, from top to bottom, an upper polyethylene film, a polyamide film, and a lower polyethylene film.

[0006] Furthermore, the four edges of the diaphragm extend forward, backward, left, and right respectively to form four extensions to catch the overflowing adhesive, and each extension is connected to the corresponding edge of the diaphragm in a point-discontinuous manner.

[0007] Furthermore, the connection between two adjacent extensions is a point-discontinuous connection.

[0008] Furthermore, the top wall of the extension is equipped with an absorbent layer to absorb excess adhesive.

[0009] The beneficial effects are as follows: The upper fiberglass layer is covered with a waterproof non-woven fabric to cover the top wall. There is a waterproof non-woven fabric separating the upper fiberglass layer from the upper mold. On the one hand, the waterproof non-woven fabric, with its bottom wall, prevents the adhesive that has seeped up to the top wall of the upper fiberglass layer from continuing to seep upwards, thus preventing the adhesive from sticking to the upper mold. On the other hand, the waterproof non-woven fabric, with its top wall, prevents the release agent sprayed onto its top wall from seeping downwards, thus retaining the release agent on the top wall of the waterproof non-woven fabric and preventing it from sticking to the mold. The lower fiberglass layer is covered with a diaphragm to cover the bottom wall. The diaphragm prevents the adhesive that has seeped down to the bottom wall of the lower fiberglass layer from continuing to seep downwards, thus preventing the adhesive from sticking to the lower mold. Attached Figure Description

[0010] Figure 1 This is a front view of the existing car roof fabric structure;

[0011] Figure 2 This is a front view of the structure of the car roof fabric of this utility model;

[0012] Figure 3 This is a top view of the diaphragm in the automotive headliner fabric structure of this utility model;

[0013] In the diagram: 1. Upper fiberglass layer; 2. Polyurethane layer; 3. Lower fiberglass layer; 4. Separator film; 41. Extension section; 42. Point-discontinuous connection; 5. Waterproof non-woven fabric. Detailed Implementation

[0014] The present invention will be further described in detail below with reference to specific embodiments.

[0015] like Figure 2 As shown, the car roof of this utility model includes a lower fiberglass layer 3, and a separator film 4 is fixedly installed on the lower fiberglass layer 3 to cover the bottom wall. The separator film 4 includes an upper polyethylene film, a polyamide film, and a lower polyethylene film from top to bottom. Figure 3 As shown, the four edges of the separator 4 extend forward, backward, left, and right respectively, forming four extensions 41. Each extension 41 is connected to the corresponding edge of the separator 4 in a point-discontinuous manner 42, and adjacent extensions 41 are also connected in a point-discontinuous manner 42. The top wall of each extension 41 is equipped with a cotton layer (not shown in the figure) as an absorbent layer. Figure 2 As shown, a polyurethane layer 2 with adhesive on the bottom wall is placed on the top wall of the lower fiberglass layer 3, and an upper fiberglass layer 1 with adhesive on the bottom wall is placed on the top wall of the polyurethane layer 2. A waterproof non-woven fabric 5 is fixed to the upper fiberglass layer 1 to cover the top wall.

[0016] The process of preparing the car roof is as follows: A release agent is sprayed onto the top wall of the waterproof nonwoven fabric 5. The release agent is blocked by the waterproof nonwoven fabric 5 and therefore does not seep down. Then, the car roof is placed on the lower mold, and the lower mold is controlled to move down to press the car roof. During the pressing process, the waterproof nonwoven fabric 5 uses its bottom wall to prevent the glue that has seeped up to the top wall of the upper fiberglass layer 1 from continuing to seep up, thereby preventing the glue from sticking to the upper mold; the diaphragm 4 prevents the glue that has seeped down to the bottom wall of the lower fiberglass layer 3 from continuing to seep down, thereby preventing the glue from sticking to the lower mold. Even so, some glue will still overflow laterally from between the bottom wall of the upper fiberglass layer 1 and the top wall of the polyurethane layer 2, and between the bottom wall of the polyurethane layer 2 and the top wall of the lower fiberglass layer 3 when under pressure, and then flow down along the side wall of the car roof to the four extensions 41 where it is absorbed by the cotton layer to prevent it from sticking to the upper mold. Next, control the upper mold to move upward and reset, remove the car roof, and then tear off the four extensions 41 one by one along the corresponding point-break connection 42 to obtain the finished car roof.

[0017] The above description is merely an embodiment of this utility model and does not limit the scope of patent protection. Any non-substantial changes or substitutions made by those skilled in the art based on this utility model will still fall within the scope of patent protection.

Claims

1. A car roof fabric structure that is not prone to sticking, comprising, from top to bottom, an upper fiberglass layer (1), a polyurethane layer (2), and a lower fiberglass layer (3), characterized in that: The upper fiberglass layer (1) is fixed with a waterproof nonwoven fabric (5) to cover the top wall, and the top wall of the waterproof nonwoven fabric (5) is used for spraying release agent; the lower fiberglass layer (3) is fixed with a diaphragm (4) to cover the bottom wall.

2. The automotive roof fabric structure as described in claim 1, characterized in that: The separator film (4) consists of an upper polyethylene film, a polyamide film, and a lower polyethylene film from top to bottom.

3. The automotive roof fabric structure as described in claim 1, characterized in that: The four edges of the diaphragm (4) extend forward, backward, left and right respectively to form four extensions (41) to receive the overflow adhesive. Each extension (41) is connected to the corresponding edge of the diaphragm (4) in a point-break manner.

4. The automotive headliner fabric structure as described in claim 3, characterized in that: The two adjacent extensions (41) are connected by a point break.

5. The automotive roof fabric structure as described in claim 3, characterized in that: The top wall of the extension (41) is equipped with an absorbent layer to absorb excess glue.

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