Improved multi-cavity sealing plastic expansion sheet

Abstract

The utility model discloses an improved multi-cavity sealed plastic expansion sheet, which relates to the technical field of plastic expansion sheets and comprises a plastic expansion sheet body, a plurality of buffer cavities are uniformly arranged in the plastic expansion sheet body, and support structures are arranged in the buffer cavities. Reinforcing net layers are fixedly arranged at the top and the bottom of the plastic expansion sheet body, and elastic buffer layers are fixedly arranged on the side portions, away from each other, of the two reinforcing net layers. According to the utility model, the structure is reasonable, through the cooperative design of the buffer cavity and the elastic buffer layer, the effect of buffering impact force can be achieved, the buffer performance is good, the situation that the plastic expansion sheet is broken due to impact can be effectively reduced, the practicability is good, and through the cooperative arrangement of the cross-shaped supporting column and the reinforcing net layer, the service life is prolonged. The structural strength of each part of the plastic expansion sheet can be effectively improved, so that the plastic expansion sheet is better in compression resistance effect, more difficult to break during use, simple in structure and easy to produce and popularize.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic expansion sheets, in particular to an improved multi-cavity sealing plastic expansion sheet. Background Art

[0002] With the development of society, cars have gradually become a necessary tool for people to travel. Cars are composed of multiple parts, among which the body side assembly is one of the important parts that affect the LVH of the whole vehicle. Because the side structure is a buffer cavity structure, external and internal noises are transmitted from the front end of the car body to the inside of the side. Because the side structure is a cavity structure, external noises and air flow through the inside of the side, and the noise is transmitted from the outside of the car to the inside of the car. Therefore, plastic expansion sheets are usually used to seal the through holes on the buffer cavity of the car side. However, most of the existing plastic expansion sheets are not ideal in impact resistance when used in actual use. During use, it is easy for the plastic expansion sheets to break due to external impact, resulting in the need to frequently repair and replace the plastic expansion sheets, which is inconvenient to use and needs to be improved in practicality. Therefore, in order to solve the above problems, this application proposes an improved multi-cavity sealed plastic expansion sheet. Utility Model Content

[0003] The purpose of the present application is to provide an improved multi-cavity sealed plastic expansion sheet to solve the problem mentioned in the above background technology that most plastic expansion sheets have unsatisfactory impact resistance and are prone to breakage due to external impact during use.

[0004] To achieve the above-mentioned objectives, the present application provides the following technical solutions: an improved multi-cavity sealed plastic expansion sheet, comprising a plastic expansion sheet body, a plurality of buffer cavities evenly arranged in the plastic expansion sheet body, a support structure arranged in each of the plurality of buffer cavities, a reinforcing mesh layer fixedly arranged on the top and bottom of the plastic expansion sheet body, an elastic buffer layer fixedly arranged on the sides of the two reinforcing mesh layers away from each other, a fire-retardant layer fixedly arranged on the sides of the two elastic buffer layers away from each other, and a wear-resistant layer fixedly arranged on the sides of the two fire-retardant layers away from each other.

[0005] Preferably, the support structure comprises a plurality of cross-shaped support columns, the top ends of the plurality of cross-shaped support columns are all mounted on the top inner wall of the buffer cavity, and the bottom ends of the plurality of cross-shaped support columns are all mounted on the bottom inner wall of the buffer cavity.

[0006] Preferably, the reinforcing mesh layer is made of a fiber mesh or a metal mesh.

[0007] Preferably, the elastic buffer layer is made of thermoplastic polyester elastomer.

[0008] Preferably, the material of the fire-retardant layer is flame-retardant ABS resin.

[0009] Preferably, a plurality of flame retardant masterbatches are uniformly doped in the fireproof and flame retardant layer.

[0010] Preferably, the wear-resistant layer is made of polyurethane.

[0011] In summary, the technical effects and advantages of the utility model are:

[0012] The utility model has a reasonable structure. Through the coordinated design of the buffer cavity and the elastic buffer layer, the plastic expansion sheet can play a role in reducing the impact force when it is impacted. It has good buffering performance and effectively improves the impact resistance of the plastic expansion sheet, thereby effectively reducing the situation where the plastic expansion sheet is broken due to impact. It has good practicality. Through the coordinated arrangement of the cross-shaped support column and the reinforcing mesh layer, the structural strength of each part of the plastic expansion sheet can be effectively increased, so that the plastic expansion sheet has a better compression resistance and is less likely to break during use. Through the coordinated arrangement of the fire-retardant layer, the flame-retardant masterbatch and the wear-resistant layer, the flame retardancy and wear resistance of the plastic expansion sheet can be effectively improved, and the service life of the plastic expansion sheet is greatly extended. The structure is simple and easy to produce and promote. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of an improved multi-cavity sealed plastic expansion sheet according to an embodiment of the present application;

[0015] Figure 2 This is a schematic diagram of a front cross-sectional structure of an improved multi-cavity sealing plastic expansion sheet according to an embodiment of the present application;

[0016] Figure 3 It is a schematic diagram of the cross-sectional structure of the plastic expansion sheet body in the embodiment of the present application.

[0017] In the figure: 1. Plastic expansion sheet body; 2. Buffer cavity; 3. Cross-shaped support column; 4. Reinforced mesh layer; 5. Elastic buffer layer; 6. Fire retardant layer; 7. Wear-resistant layer; 8. Flame retardant masterbatch. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Example 1

[0020] refer to Figure 1-Figure 3 An improved multi-cavity sealed plastic expansion sheet shown in the figure comprises a plastic expansion sheet body 1, a plurality of buffer cavities 2 are evenly opened in the plastic expansion sheet body 1, a support structure is arranged in each of the plurality of buffer cavities 2, the support structure comprises a plurality of cross-shaped support columns 3, the top ends of the plurality of cross-shaped support columns 3 are all mounted on the top inner wall of the buffer cavity 2, the bottom ends of the plurality of cross-shaped support columns 3 are all mounted on the bottom inner wall of the buffer cavity 2, the cross-shaped support columns 3 can be fixedly mounted in the buffer cavity 2 by an integrated molding method in the prior art, the advantage of such a setting is that the buffer cavity 2 is supported by the cross-shaped support columns 3, the support effect is good, and the structural strength of the cross structure is also better, which can effectively improve the pressure resistance effect at the buffer cavity 2, and thus can effectively improve the pressure resistance performance of the plastic expansion sheet body 1;

[0021] The top and bottom of the plastic expansion sheet body 1 are fixed with a reinforcing mesh layer 4, and the reinforcing mesh layer 4 is made of a fiber mesh or a metal mesh. The advantage of this arrangement is that it can effectively increase the connection strength of each part of the plastic expansion sheet body 1, and it is less likely to break during use;

[0022] The sides of the two reinforcing mesh layers 4 that are away from each other are both fixed with elastic buffer layers 5. The advantage of such a configuration is that when impacted, the elastic buffer layer 5 can reduce the impact force under the elastic force of the elastic buffer layer 5, effectively improving the impact resistance of the plastic expansion sheet body 1, making it more reliable when used. The elastic buffer layer 5 is made of thermoplastic polyester elastomer, which has both the excellent elasticity of rubber and the easy processing of thermoplastic plastics, and has better processing performance and longer service life than rubber.

[0023] Example 2

[0024] The sides of the two elastic buffer layers 5 that are away from each other are both provided with a fire-retardant layer 6. The advantage of such a setting is that it can play a fire-retardant effect and improve the flame retardant performance of the plastic expansion sheet body 1. The material of the fire-retardant layer 6 is a flame-retardant ABS resin, which has good heat-resistant and flame-retardant properties. The flame-retardant ABS resin has good impact strength and surface hardness within a certain temperature range, good dimensional stability, certain chemical resistance and good electrical insulation.

[0025] The sides of the two fire-retardant layers 6 that are away from each other are both provided with a wear-resistant layer 7. The advantage of such a setting is that the plastic expansion sheet has good wear resistance and can effectively extend the service life of the plastic expansion sheet. The material of the wear-resistant layer 7 is polyurethane, which has excellent wear resistance, oil resistance and chemical resistance, as well as good fatigue resistance and tensile strength.

[0026] By means of the above structure, through the coordinated design of the buffer cavity 2 and the elastic buffer layer 5, the plastic expansion sheet can play a role in reducing the impact force when it is impacted, and has good buffering performance, which effectively improves the impact resistance of the plastic expansion sheet, thereby effectively reducing the occurrence of plastic expansion sheet breakage due to impact, and has good practicality. Through the coordinated setting of the cross-shaped support column 3 and the reinforcing mesh layer 4, the structural strength of each part of the plastic expansion sheet can be effectively increased, so that the plastic expansion sheet has better compression resistance and is less likely to break during use. Through the coordinated setting of the fire-retardant layer 6 and the wear-resistant layer 7, the flame retardancy and wear resistance of the plastic expansion sheet can be effectively improved, and the service life of the plastic expansion sheet is greatly extended. The structure is simple and easy to produce and promote.

[0027] As a preferred implementation of this embodiment, a plurality of flame retardant masterbatches 8 are uniformly doped in the fire retardant layer 6. The advantage of such an arrangement is that the fire retardant performance of the plastic expansion sheet can be further improved.

[0028] How this utility works:

[0029] When the plastic expansion sheet is impacted, the coordinated design of the buffer cavity 2 and the elastic buffer layer 5 can reduce the impact force, and has good buffering performance, which effectively improves the impact resistance of the plastic expansion sheet, thereby effectively reducing the breakage of the plastic expansion sheet due to impact. It has good practicality, and the buffer cavity 2 can be supported by the cross-shaped support column 3, and the supporting effect is good. The structural strength of the cross structure is also better, which can effectively improve the compressive effect of the buffer cavity 2. By strengthening the mesh layer 4, the connection strength of each part of the plastic expansion sheet can be effectively increased, so that the plastic expansion sheet has a better compressive effect and is less likely to break during use. The fire-retardant layer 6 and the flame-retardant masterbatch 8 can effectively improve the fire-retardant performance of the plastic expansion sheet. The wear-resistant layer 7 can effectively improve the wear resistance of the plastic expansion sheet, and effectively extend the service life of the plastic expansion sheet.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An improved multi-cavity sealed plastic expansion sheet, comprising a plastic expansion sheet body (1), characterized in that: A plurality of buffer cavities (2) are evenly arranged in the plastic expansion sheet body (1), and a support structure is arranged in each of the plurality of buffer cavities (2). A reinforcing mesh layer (4) is fixedly arranged on the top and bottom of the plastic expansion sheet body (1), and elastic buffer layers (5) are fixedly arranged on the sides of the two reinforcing mesh layers (4) that are away from each other, and fire-retardant layers (6) are fixedly arranged on the sides of the two elastic buffer layers (5) that are away from each other, and wear-resistant layers (7) are fixedly arranged on the sides of the two fire-retardant layers (6) that are away from each other.

2. The improved multi-cavity sealing plastic expansion sheet according to claim 1, characterized in that: The support structure comprises a plurality of cross-shaped support columns (3), the top ends of the plurality of cross-shaped support columns (3) are all mounted on the top inner wall of the buffer cavity (2), and the bottom ends of the plurality of cross-shaped support columns (3) are all mounted on the bottom inner wall of the buffer cavity (2).

3. The improved multi-cavity sealing plastic expansion sheet according to claim 1, characterized in that: The reinforcing mesh layer (4) is made of a fiber mesh or a metal mesh.

4. The improved multi-cavity sealing plastic expansion sheet according to claim 1, characterized in that: The elastic buffer layer (5) is made of thermoplastic polyester elastomer.

5. The improved multi-cavity sealing plastic expansion sheet according to claim 1, characterized in that: The material of the fireproof and flame retardant layer (6) is flame retardant ABS resin.

6. The improved multi-cavity sealing plastic expansion sheet according to claim 1, characterized in that: The fireproof and flame retardant layer (6) is uniformly doped with a plurality of flame retardant masterbatches (8).

7. The improved multi-cavity sealing plastic expansion sheet according to claim 1, characterized in that: The material of the wear-resistant layer (7) is polyurethane.

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