Mute environment-friendly liner cotton

Abstract

The utility model relates to mute environment-friendly liner cotton which comprises a first tiled PET cotton layer, a vertical PET cotton layer and a second tiled PET cotton layer, the vertical PET cotton layer is located between the first tiled PET cotton layer and the second tiled PET cotton layer, and the vertical PET cotton layer is connected with the first tiled PET cotton layer and the second tiled PET cotton layer in a hot melting mode. The sound-insulation and noise-reduction fabric has the beneficial effects that a sandwich structure comprising the first tiled PET cotton layer, the vertical PET cotton layer and the second tiled PET cotton layer is arranged, and PET fibers with different deniers are used in each layer, so that holes with different sizes are formed in the three PET cotton layers, energy loss of sound waves with different wavelengths is facilitated, and the sound-insulation and noise-reduction effects are improved; the vertical PET cotton layer is adopted in the middle, so that the supporting performance of the mute environment-friendly liner cotton in the thickness direction is improved; the first tiled PET cotton layer and the second tiled PET cotton layer are used for protecting the top end and the bottom end of the vertical PET cotton layer respectively, so that the vertical PET cotton layer is prevented from being torn off due to pressure in the thickness direction of the mute environment-friendly liner cotton.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automobile gasket, especially relates to a mute environment-friendly gasket cotton. BACKGROUND

[0002] The automobile gasket is the main structure for reducing the noise from the outside of the car compartment to the inside of the car compartment, and plays an important role in reducing the noise pollution in the car compartment.

[0003] The existing pure cotton gasket made of pure cotton has the advantages of mildew resistance and less volatile organic compounds because no recycled cotton or other plant fibers are added. However, the through-hole structure of the existing pure cotton gasket is simple, and the sound wave does not produce enough energy loss when passing through the pure cotton gasket, resulting in poor sound insulation and noise reduction effect. Moreover, the structure has poor supportability. Therefore, it is necessary to research and improve the structure of the existing pure cotton gasket to improve the sound insulation and noise reduction effect and the supportability of the pure cotton gasket on the basis of mildew resistance and less volatile organic compounds. SUMMARY

[0004] The utility model aims at overcoming the above problems existing in the prior art, and provides a mute environment-friendly gasket cotton.

[0005] To achieve the above technical purposes and effects, the utility model realizes the following technical scheme:

[0006] A mute environment-friendly gasket cotton comprises a first flat PET cotton layer, a vertical PET cotton layer, and a second flat PET cotton layer, the vertical PET cotton layer is located between the first flat PET cotton layer and the second flat PET cotton layer, and the vertical PET cotton layer is hot-welded to the first flat PET cotton layer and the second flat PET cotton layer.

[0007] The first flat PET cotton layer is composed of a plurality of layers of overlapping flat first PET fiber webs, the first PET fiber web is interwoven with low-melting-point PET fibers and first PET fibers, the first PET fibers have a fineness of 2d-2.5d, and the first PET fibers have a length of 51mm.

[0008] The vertical PET cotton layer is formed by closely arranging vertical PET fiber webs in a wave shape, the vertical PET fiber web is interwoven with low-melting-point PET fibers and third PET fibers, the third PET fibers have a fineness of 4.4d-6.67d, and the third PET fibers have a length of 51mm.

[0009] The second flat PET cotton layer is composed of a plurality of second PET fiber nets which are overlapped, the second PET fiber net is interwoven by low-melting-point PET fibers and second PET fibers, the second PET fibers have a fineness of 0.8d-2d, and the second PET fibers have a length of 51mm.

[0010] The low-melting-point PET fibers have a fineness of 4.4d-6.67d, and the low-melting-point PET fibers have a length of 51mm.

[0011] The thickness of the straight PET cotton layer is equal to 34%-60% of the thickness of the silent environment-friendly cushion cotton.

[0012] The thickness of the first flat PET cotton layer is equal to the thickness of the second flat PET cotton layer.

[0013] The beneficial effects of the utility model are as follows: the first flat PET cotton layer, the straight PET cotton layer and the second flat PET cotton layer are arranged in a sandwich structure, and different fineness PET fibers are used in each layer, so that holes with different sizes are formed in the three PET cotton layers, which is beneficial to energy loss of sound waves with different wavelengths and improves the sound insulation and noise reduction effect; the straight PET cotton layer is arranged in the middle to improve the supporting performance in the thickness direction of the silent environment-friendly cushion cotton; the first flat PET cotton layer and the second flat PET cotton layer are arranged to protect the top end and the bottom end of the straight PET cotton layer, so that the straight PET cotton layer is prevented from being torn when the straight PET cotton layer is subjected to pressure in the thickness direction of the silent environment-friendly cushion cotton. BRIEF DESCRIPTION OF DRAWINGS

[0014] The accompanying drawings, which are included to provide a further understanding of the utility model, form a part of the application and schematically illustrate the embodiments of the utility model and the description thereof, and do not constitute improper limitations on the utility model. In the drawings:

[0015] Figure 1 is a structure schematic view of a cross section of the silent environment-friendly cushion cotton in the utility model;

[0016] The reference numerals in the drawings are as follows: the first flat PET cotton layer 1, the straight PET cotton layer 2, the second flat PET cotton layer 3, the first PET fiber net 4, the straight PET fiber net 5 and the second PET fiber net 6. DETAILED DESCRIPTION

[0017] The utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0018] As Figure 1As shown, a kind of mute environment-friendly cushion cotton includes first flat PET cotton layer 1, upright PET cotton layer 2, second flat PET cotton layer 3, upright PET cotton layer 2 is located between first flat PET cotton layer 1 and second flat PET cotton layer 3, and upright PET cotton layer 2 is hot-welded with first flat PET cotton layer 1 and second flat PET cotton layer 3 respectively.

[0019] The intermediate upright PET cotton layer 2 improves the support performance of the mute environment-friendly cushion cotton in the thickness direction; the first flat PET cotton layer 1 and the second flat PET cotton layer 3 protect the top end and the bottom end of the upright PET cotton layer 2 respectively, to prevent the upright PET cotton layer 2 from being torn when subjected to pressure along the thickness direction of the mute environment-friendly cushion cotton.

[0020] The first flat PET cotton layer 1 is composed of a plurality of overlapping first PET fiber webs 4, the first PET fiber web 4 is interwoven by low-melting-point PET fibers and first PET fibers; the upright PET cotton layer 2 is composed of a plurality of overlapping first PET fiber webs 4, the first PET fiber web 4 is interwoven by low-melting-point PET fibers and first PET fibers; the second flat PET cotton layer 3 is composed of a plurality of overlapping second PET fiber webs 6, the second PET fiber web 6 is interwoven by low-melting-point PET fibers and second PET fibers.

[0021] The first PET fiber has a fineness of 2d-2.5d and a length of 51mm; the third PET fiber has a fineness of 4.4d-6.67d and a length of 51mm; the second PET fiber has a fineness of 0.8d-2d and a length of 51mm; and the low-melting-point PET fiber has a fineness of 4.4d-6.67d and a length of 51mm.

[0022] The first flat PET cotton layer, the upright PET cotton layer and the second flat PET cotton layer are arranged in a sandwich structure, and different finenesses of PET fibers are used in each layer, so that holes with different sizes are formed in the three PET cotton layers, which is beneficial to energy loss of sound waves with different wavelengths and improves the sound insulation and noise reduction effect.

[0023] The thickness of the upright PET cotton layer is equal to 34%-60% of the thickness of the mute environment-friendly cushion cotton, and the thickness of the first flat PET cotton layer is equal to the thickness of the second flat PET cotton layer.

[0024] In this embodiment, the thickness of the upright PET cotton layer is equal to 60% of the thickness of the mute environment-friendly cushion cotton, the thickness of the first flat PET cotton layer is equal to 20% of the thickness of the mute environment-friendly cushion cotton, and the thickness of the second flat PET cotton layer is equal to 20% of the thickness of the mute environment-friendly cushion cotton.

[0025] Design principle:

[0026] 1. The first flat PET cotton layer 1, the vertical PET cotton layer 2, and the second flat PET cotton layer 3 are combined in a sandwich structure design. By precisely controlling the thickness and fiber arrangement of each layer, effective absorption and scattering of sound waves are achieved. The first flat PET cotton layer and the second flat PET cotton layer use PET fibers of different deniers to form a multi-level pore structure, which is beneficial for multiple reflections and absorption of sound waves in different media. The vertical PET cotton layer is arranged in a wave shape, increasing the surface area and complexity of the material, further improving the sound insulation effect.

[0027] 2. The selection of PET fibers with specific denier and length is based on the comprehensive consideration of acoustic performance and mechanical performance. Lower denier PET fibers provide more surface area, which is beneficial for sound absorption; while higher denier PET fibers provide better support and structural stability. The 51mm length selection can ensure the flowability of the fibers during the hot melting process, and also meet the thickness requirements of the final product.

[0028] 3. The application of hot melting technology in the utility model is to precisely control the heating temperature and time, so that the low-melting-point PET fibers can be quickly melted and bonded without damaging other PET fibers. This process ensures the firm combination between the cushion cotton layers, while maintaining the overall softness and plasticity of the material.

[0029] 4. Through material selection and structural design, the stability of the cushion cotton under temperature and humidity changes is ensured, thereby prolonging the service life of the product and improving the adaptability of the cushion cotton in different environmental conditions.

[0030] The production process of the silent and environmentally friendly cushion cotton has been optimized to improve production efficiency and reduce manufacturing costs. At the same time, the standardization and automation design of the process flow ensures consistency and reliability in large-scale production.

[0031] The silent and environmentally friendly cushion cotton can also be selected according to the specific application scenarios and performance requirements of customers, with different thickness, density and fiber types. Customized services are provided for different customers.

[0032] The silent and environmentally friendly cushion cotton is easy to maintain and only needs to be cleaned regularly to maintain good performance. According to the results of accelerated aging test, the expected service life of the product can reach more than 10 years, reducing the frequency of replacement and reducing long-term operating costs.

[0033] In order to prove the support performance of the silent and environmentally friendly cushion cotton, compression tests were conducted. The test results show that even under continuous pressure, the cushion cotton can maintain good shape and structure, proving its excellent support performance.

[0034] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A silent eco-friendly cushioning pad characterized in that: The first flat PET cotton layer, the vertical PET cotton layer, and the second flat PET cotton layer are sequentially arranged, and the vertical PET cotton layer is located between the first flat PET cotton layer and the second flat PET cotton layer, and the vertical PET cotton layer is hot-welded with the first flat PET cotton layer and the second flat PET cotton layer respectively.

2. The silent eco-friendly cushioning cotton according to claim 1, wherein: The first flat PET cotton layer is composed of multiple layers of overlapped flat first PET fiber webs, the first PET fiber web is interwoven by low-melting-point PET fibers and first PET fibers, the first PET fibers have a fineness of 2d-2.5d, and the first PET fibers have a length of 51mm.

3. The silent eco-friendly cushioning cotton according to claim 1, wherein: The vertical PET cotton layer is composed of a vertical PET fiber web arranged in a wave shape, the vertical PET fiber web is interwoven by low-melting-point PET fibers and third PET fibers, the third PET fibers have a fineness of 4.4d-6.67d, and the third PET fibers have a length of 51mm.

4. The silent eco-friendly cushioning cotton according to claim 1, wherein: The second flat PET cotton layer is composed of multiple layers of overlapped flat second PET fiber webs, the second PET fiber web is interwoven by low-melting-point PET fibers and second PET fibers, the second PET fibers have a fineness of 0.8d-2d, and the second PET fibers have a length of 51mm.

5. The silent environment-friendly cushioning cotton according to any one of claims 2 to 4, characterized in that: The low-melting-point PET fibers have a fineness of 4.4d-6.67d, and the low-melting-point PET fibers have a length of 51mm.

6. The silent eco-friendly cushioning cotton according to claim 1, wherein: The thickness of the vertical PET cotton layer is equal to 34%-60% of the thickness of the silent environment-friendly cushion cotton.

7. The silent eco-friendly cushioning cotton according to claim 1, wherein: The thickness of the first flat PET cotton layer is equal to the thickness of the second flat PET cotton layer.

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