Knitted felt

Abstract

The utility model relates to a woven felt, and relates to the field of automobile sound insulation felts.The woven felt comprises a PET base material and a surface layer, and the surface layer is arranged on the surface of the PET base material; and the PET base material is formed by hot-pressing and compounding a plurality of layers of PET single-layer felts. The sound insulation effect of the sound insulation felt can be effectively improved, and meanwhile the weight of the sound insulation felt is reduced.

Description

Technical Field

[0001] The present application relates to the field of automobile sound insulation felt, and in particular to a woven felt. Background Art

[0002] The interior parts of cars mainly play the role of protection, sound insulation, sound absorption and decoration, which requires that the interior parts must have a certain strength and good acoustic performance (sound insulation and sound absorption). At present, the interior of cars is developing in the direction of lightweight, beautiful and comfortable, energy-saving and environmentally friendly, and personalized. People have higher and higher requirements on the weight, strength, acoustics and structure of car interiors.

[0003] The car's carpet, front wall, door panel, shelf, trunk carpet, and under the seat are filled with sound insulation felt to play a role in sound insulation, sound absorption, and decoration. In the prior art, common sound insulation felt mainly includes a two-layer structure, the upper surface is a high-density material, which mainly plays a role in sound insulation and decoration; the lower layer is a single-layer sound insulation felt, which plays a role in sound absorption and filling; the single-layer sound insulation felt and the high-density sound insulation material on the surface are compositely connected by an adhesive layer.

[0004] However, the sound insulation felt formed by compounding the sound insulation felt with high-density materials has disadvantages such as heavy weight and poor sound insulation effect, and there is room for improvement. Utility Model Content

[0005] In order to reduce the weight of the sound insulation felt and improve the sound insulation effect of the sound insulation felt, the present application provides a woven felt.

[0006] The woven felt provided in the present application adopts the following technical solution:

[0007] A woven felt comprising a PET substrate and a surface layer, wherein the surface layer is arranged on the surface of the PET substrate;

[0008] The PET substrate is formed by hot pressing and compounding multiple layers of PET single-layer felt.

[0009] By adopting the above technical scheme, since the PET substrate is formed by needle-punching and hot-pressing multiple layers of PET single-layer felt, it has the advantages of tight structure, not easy to loosen, and high structural strength, and the pores formed between PET fibers and multiple layers of PET single-layer felt can achieve good sound insulation effect. The multiple layers of PET single-layer felt can achieve good connection effect between layers through hot pressing composite, while reducing the use of adhesives, which can further reduce the weight of the sound insulation felt. The PET substrate and the surface layer are light in weight, and the surface layer on the surface of the PET substrate can provide a good protection effect for the PET substrate, reducing the occurrence of PET substrate fiber falling caused by friction between the surface of the PET substrate and other objects. In addition, PET fibers can be recycled from recycled plastics. The felt made of PET substrate can be recycled and reused after the felt is scrapped, which is more environmentally friendly and has higher safety.

[0010] Preferably, the PET single-layer felt is formed by needle-punching a plurality of PET fibers.

[0011] By adopting the above technical scheme, PET fibers are made into PET single-layer felt through needle punching, which can effectively enhance the PET fibers to be entangled with each other to form a single-layer felt with a tight structure, and a number of pores are formed between the entangled PET fibers. The porous and loose PET substrate can achieve good sound insulation effect.

[0012] Preferably, a plurality of structural reinforcing fibers are arranged between the plurality of PET single-layer felts by needle punching.

[0013] By adopting the above technical solution, the structural reinforcing fibers are compounded between the multiple layers of PET single-layer felts through needle punching, and the structural reinforcing fibers are entangled with the PET fibers of the multiple layers of PET single-layer felts, which can improve the tightness of the connection structure between the multiple layers of PET single-layer felts and further improve the firmness of the PET substrate.

[0014] Preferably, the surface layer is formed by high-density cross-weaving of a plurality of high-density braided wires.

[0015] By adopting the above technical scheme, since the surface layer is formed by high-density cross-weaving of multiple strands of high-density braided wires, the pores between the fibers of the high-density braided wires are small, and the micropores formed between the confidentiality braided wires and the high-density braided wires are small, a good waterproof effect can be achieved.

[0016] Preferably, the high-density braided wire is densely woven from a plurality of PET fibers.

[0017] By adopting the above technical solution, the PET fiber itself has an impermeable effect. After the high-density braided wire formed by high-density weaving of several PET fibers is densely woven to form a surface layer, the surface layer can achieve a waterproof effect, which is convenient for cleaning water stains.

[0018] Preferably, the high-density braided wire is densely woven from multiple strands of waste spun fibers.

[0019] By adopting the above technical scheme, the high-density braided wire formed by the high-density weaving of waste fibers is densely woven to form a surface layer. When water flows to the surface of the surface layer, the high-density waste fibers absorb water and expand, but the micropores between the waste fibers are reduced, which can prevent water from further penetrating into the PET substrate, thereby achieving a waterproof effect for the surface layer and facilitating the cleaning of water stains.

[0020] Preferably, the surface layer comprises a multi-layer composite coating coated on the surface of the PET substrate.

[0021] By adopting the above technical solution, the multi-layer composite coating can form different patterns on the surface of the felt, making the surface of the material smooth, beautiful and easy to clean. The composite material can improve the corrosion resistance and wear resistance of the felt.

[0022] In summary, the woven felt of the present application has at least one of the following beneficial technical effects:

[0023] 1. The PET substrate formed by hot pressing multiple layers of PET single-layer felt and the surface layer on the surface of the PET substrate together constitute the felt. The fine pores formed between the PET fibers inside the PET substrate can achieve good sound insulation effect. At the same time, both the surface layer and the PET substrate are light in weight, and the use of glue is omitted. The connection between layers is directly achieved through the melted PET fibers, which can effectively reduce the overall weight of the felt material;

[0024] 2. Since the surface layer is formed by high-density cross-weaving of multiple strands of high-density braided wires, and the high-density braided wires are woven by a number of PET fibers, when water leaks onto the felt, the surface layer can reduce the occurrence of water leaking into the lower PET substrate, thereby achieving a good waterproof effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of an embodiment of the present application for illustrating the overall structure of the felt.

[0026] Explanation of the accompanying drawings: 1. PET substrate; 11. PET single-layer felt; 2. Surface layer. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1 This application is described in further detail.

[0028] Example 1

[0029] The present application embodiment discloses a woven felt. Figure 1It mainly includes a PET substrate 1 and a surface layer 2, wherein the surface layer 2 is arranged on the surface of the PET substrate 1; the PET substrate 1 is formed by hot-pressing and compositely forming multiple layers of PET single-layer felt 11.

[0030] Since the PET substrate 1 is formed by needle-punching and hot-pressing multiple layers of PET single-layer felt 11, it has the advantages of compact structure, not easy to loosen, and high structural strength. The pores formed between PET fibers and between multiple layers of PET single-layer felt 11 can achieve good sound insulation effect.

[0031] The multi-layer PET single-layer felt 11 can achieve a good connection effect between layers through hot pressing and can reduce the use of adhesives, thereby further reducing the weight of the sound insulation felt.

[0032] The PET substrate 1 and the surface layer 2 are relatively light in weight, and the surface layer 2 on the surface of the PET substrate 1 can provide good protection for the PET substrate 1 and reduce the occurrence of fibers of the PET substrate 1 falling off due to friction between the surface of the PET substrate 1 and other objects.

[0033] In addition, PET fiber can be made from recycled plastics. The PET substrate 1 can be used to make felt, and the PET material can be recycled and reused after the felt is scrapped, which is more environmentally friendly.

[0034] It should be noted that, in the embodiment of the present application, the PET single-layer felt is formed by needle-punching a plurality of PET fibers.

[0035] PET fibers are needle-punched into a PET single-layer felt, which can effectively enhance the PET fibers to be entangled with each other to form a single-layer felt with a tight structure, and a number of pores are formed between the entangled PET fibers. The porous and loose PET substrate 1 can achieve a good sound insulation effect.

[0036] In the embodiment of the present application, a plurality of structural reinforcement fibers are arranged between a plurality of PET single-layer felts 11 by needle punching.

[0037] The structural reinforcement fibers are compounded between the multiple layers of PET single-layer felt 11 by needle punching. The structural reinforcement fibers are entangled with the PET fibers of the multiple layers of PET single-layer felt 11, which can improve the tightness of the connection structure between the multiple layers of PET single-layer felt 11 and further improve the firmness of the PET substrate 1.

[0038] In the embodiment of the present application, the surface layer 2 is formed by a plurality of high-density braided wires being high-density cross-woven. Since the surface layer 2 is formed by a plurality of high-density braided wires being high-density cross-woven, the pores between the fibers of the high-density braided wires are small, and the micropores formed between the confidentiality braided wires and the high-density braided wires are small, a good waterproof effect can be achieved.

[0039] The high-density braided wire is made of a plurality of PET fibers which are densely braided. The PET fibers themselves have a water-proof effect. After the high-density braided wire formed by a plurality of PET fibers are densely braided to form the surface layer 2, the surface layer 2 can achieve a waterproof effect.

[0040] The implementation principle of a woven felt in an embodiment of the present application is as follows: a PET substrate 1 formed by hot pressing a multi-layer PET single-layer felt 11, and a surface layer 2 fixed on the surface of the PET substrate 1 by hot pressing together constitute the felt. The fine pores formed between the PET fibers inside the PET substrate 1 can achieve a good sound insulation effect. At the same time, both the surface layer 2 and the PET substrate 1 are light in weight, and the use of rubber is omitted, and the connection between layers and between the PET substrate 1 and the surface layer 2 is directly achieved through the melted PET fibers, which can effectively reduce the overall weight of the felt material.

[0041] Example 2

[0042] It should be noted that, in some other embodiments, the high-density braided wire can be densely woven from multiple strands of waste spun fibers.

[0043] After the high-density woven wire formed by the high-density weaving of waste fibers is densely woven to form the surface layer 2, when water flows to the surface layer 2, the high-density waste fibers absorb water and expand, but the micropores between the waste fibers are reduced, which can prevent water from further penetrating into the PET substrate 1, and the waterproof effect of the surface layer 2 can be achieved.

[0044] Waste spinning braiding thread has the advantages of wide sources and low material requirements. It can be processed through materials such as waste clothing, scraps from textile factories and chemical fiber factories. When the felt is damaged and disassembled, it can be reprocessed and recycled, which is more environmentally friendly.

[0045] Example 3

[0046] A multi-layer composite coating (polymer coating) may also be applied on the surface of the substrate to replace the woven panel.

[0047] Multi-layer composite coatings can form different patterns on the surface of the felt, making the surface of the material smooth, beautiful and easy to clean. The composite materials can improve the corrosion resistance and wear resistance of the felt.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A woven felt, characterized in that: It comprises a PET substrate (1) and a surface layer (2), wherein the surface layer (2) is arranged on the surface of the PET substrate (1); The PET substrate (1) is formed by hot-pressing and composite-molding multiple layers of PET single-layer felt (11).

2. A woven felt according to claim 1, characterized in that: The PET single-layer felt is formed by needle punching a plurality of PET fibers.

3. A woven felt according to claim 2, characterized in that: A plurality of structural reinforcement fibers are arranged between the plurality of PET single-layer felts (11) by needle punching.

4. A woven felt according to claim 1, characterized in that: The surface layer (2) is formed by a plurality of high-density braided wires being cross-woven in a high-density manner, and the surface layer (2) is fixed to the surface of the PET substrate (1) by hot pressing and compounding.

5. A woven felt according to claim 4, characterized in that: The high-density braided wire is densely woven from a number of PET fibers.

6. A woven felt according to claim 4, characterized in that: The high-density braided wire is densely woven from multiple strands of waste spinning fibers.

7. A woven felt according to claim 1, characterized in that: The surface layer (2) comprises a multi-layer composite coating coated on the surface of the PET substrate (1).

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