Water-absorbing nonwoven fabric for automobile

Abstract

The utility model discloses a kind of water-absorbing type automobile non-woven fabrics, belong to non-woven fabric technical field, from top to bottom sequentially include adhesion layer, water barrier layer, water-absorbing layer and hydrophilic layer, water-absorbing layer is spaced apart and is provided with hot melt area, water barrier layer and hydrophilic layer are fixedly connected with water-absorbing layer by hot melt area, accommodating cavity is set between adjacent hot melt area, water-absorbing resin is filled in accommodating cavity.The utility model discloses a kind of water-absorbing type automobile non-woven fabrics, ensure the connection between water barrier layer, water-absorbing layer and hydrophilic layer by hot melt area, and water is conducted to water-absorbing layer by hydrophilic layer, and let water-absorbing resin absorb and store moisture, prevent moisture diffusion and residual, and water barrier layer can avoid moisture penetration into non-woven fabric sticky area, so that non-woven fabric falls.

Description

Technical Field

[0001] This utility model relates to the field of nonwoven fabric technology, specifically to a water-absorbing automotive nonwoven fabric. Background Technology

[0002] Non-woven fabric, also known as non-woven cloth or needle-punched cloth, is mostly made of polyester fiber and polyester fiber and is produced by needle punching process. It can be made in different thicknesses, feel and hardness.

[0003] When a car is being washed or during rain or snow, a small amount of moisture inevitably accumulates inside the hood. When the engine is running, this moisture absorbs the heat emitted by the engine and evaporates into water vapor. This water vapor is difficult to evaporate inside the hood and can easily cause short circuits in electrical components and corrosion of metal parts. Therefore, it is necessary to fill the inside of the car's hood with absorbent material.

[0004] Based on the above problems, a water-absorbing automotive nonwoven fabric technology solution is proposed. Utility Model Content

[0005] The purpose of this invention is to solve the problems in the prior art by proposing a water-absorbing nonwoven fabric for automobiles.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a water-absorbing automotive non-woven fabric, comprising, from top to bottom, an adhesive layer, a water-proof layer, a water-absorbing layer, and a hydrophilic layer. The water-absorbing layer is provided with heat-melting zones at intervals. The water-proof layer and the hydrophilic layer are both fixedly connected to the water-absorbing layer through the heat-melting zones. A receiving cavity is provided between adjacent heat-melting zones, and the receiving cavity is filled with water-absorbing resin.

[0007] The present invention is further configured such that: a plurality of flame-retardant sponges are provided at intervals on the side of the hydrophilic layer away from the absorbent layer, and a plurality of protrusions are provided on the side of the flame-retardant sponges away from the hydrophilic layer.

[0008] The present invention is further configured such that the waterproof layer is made of polypropylene fiber nonwoven fabric mixed with polytetrafluoroethylene.

[0009] The present invention is further configured such that the absorbent layer is formed by piercing a mixture of modified polyethylene fiber and hot melt wire.

[0010] The present invention is further configured such that the hydrophilic layer is made of a polyester fiber nonwoven fabric that has undergone plasma treatment.

[0011] The present invention is further configured such that the adhesive layer is a hot melt adhesive film.

[0012] In summary, this utility model has the following beneficial effects: the hot-melt zone ensures the connection between the waterproof layer, the absorbent layer and the hydrophilic layer, and the hydrophilic layer conducts moisture to the absorbent layer, allowing the absorbent resin to absorb and store the moisture, preventing moisture diffusion and residue. In addition, the waterproof layer can prevent moisture from penetrating into the non-woven fabric adhesive area, causing the non-woven fabric to fall off. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 for Figure 1 Enlarged view of the structure at point A in the middle.

[0015] In the diagram: 1. Adhesive layer; 2. Waterproof layer; 3. Water-absorbing layer; 31. Hot melt zone; 32. Receiving cavity; 4. Hydrophilic layer; 5. Flame-retardant sponge; 51. Protrusion. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] A type of water-absorbing automotive nonwoven fabric, such as Figure 1 As shown, from top to bottom, it includes an adhesive layer 1, a waterproof layer 2, a water-absorbing layer 3, and a hydrophilic layer 4. The water-absorbing layer 3 is provided with heat-melting zones 31 at intervals. The waterproof layer 2 and the hydrophilic layer 4 are both fixedly connected to the water-absorbing layer 3 through the heat-melting zones 31. A receiving cavity 32 is provided between adjacent heat-melting zones 31, and the receiving cavity 32 is filled with water-absorbing resin.

[0018] In this embodiment, the waterproof layer 2 is made of polypropylene nonwoven fabric mixed with polytetrafluoroethylene. Polytetrafluoroethylene has excellent water and oil repellency properties, which can effectively prevent water from corroding the inside of the hood.

[0019] The absorbent layer 3 is formed by piercing a mixture of modified polyethylene fiber and hot melt wire. The modified polyethylene fiber has good water absorption and flexibility, while the hot melt wire can melt when heated, thus connecting the waterproof layer 2, the absorbent layer 3, and the hydrophilic layer 4.

[0020] The hydrophilic layer 4 is made of polyester fiber nonwoven fabric that has been plasma treated. Plasma treatment can change the chemical properties and physical structure of the surface of the polyester fiber nonwoven fabric, giving it good hydrophilicity, thereby conducting moisture to the absorbent layer 3 more quickly.

[0021] The adhesive layer 1 is a hot melt adhesive film. The hot melt adhesive can melt and become sticky when heated, and form a strong adhesive layer after cooling, thereby ensuring the connection between the non-woven fabric and the car hood.

[0022] Practical effect: The hot melt zone 31 ensures the connection between the waterproof layer 2, the absorbent layer 3 and the hydrophilic layer 4, and the hydrophilic layer 4 conducts moisture to the absorbent layer 3, allowing the absorbent resin to absorb and store the moisture, preventing moisture diffusion and residue. In addition, the waterproof layer 2 can prevent moisture penetration from causing the non-woven fabric to fail to adhere to the engine hood and fall off.

[0023] like Figure 1 and Figure 2 As shown, further, a number of flame-retardant sponges 5 are provided at intervals on the side of the hydrophilic layer 4 away from the water-absorbing layer 3, and a number of protrusions 51 are provided on the side of the flame-retardant sponges 5 away from the hydrophilic layer 4.

[0024] When the non-woven fabric comes into contact with the engine, the flame-retardant sponge 5 can effectively prevent fire caused by the heat emitted by the engine. The protrusion 51 can increase the friction between the non-woven fabric and the engine, preventing the non-woven fabric from falling off during long-term vehicle operation. In addition, the flame-retardant sponge 5 itself has a certain water absorption capacity, which promotes the guidance of water to the hydrophilic layer 4.

[0025] Production process: S1: Prepare the materials needed for each layer and arrange them in order;

[0026] S2: According to the process flow, the waterproof layer 2, the absorbent layer 3, and the hydrophilic layer 4 are made in sequence;

[0027] S3: Fill the cavity 32 of the absorbent layer 3 with absorbent resin;

[0028] S4: Through hot-melt puncture technology, the hot-melt zone 31 of the absorbent layer 3 is melted, and stably connected with the waterproof layer 2 and the hydrophilic layer 4.

[0029] S5: The flame-retardant sponge 5 is fixed on the hydrophilic layer 4 by ultrasonic bonding technology;

[0030] S6: Adhere hot melt adhesive film to the waterproof layer 2;

[0031] S6: Conduct quality inspections on the assembled nonwoven fabric to ensure it meets the corresponding standards.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A water-absorbing automotive nonwoven fabric, comprising, from top to bottom, an adhesive layer (1), a water-repellent layer (2), a water-absorbing layer (3), and a hydrophilic layer (4), characterized in that: The absorbent layer (3) is provided with hot melt zones (31) at intervals. The water-proof layer (2) and the hydrophilic layer (4) are both fixedly connected to the absorbent layer (3) through the hot melt zones (31). A receiving cavity (32) is provided between adjacent hot melt zones (31), and the receiving cavity (32) is filled with water-absorbing resin.

2. The water-absorbing nonwoven fabric for automobiles according to claim 1, characterized in that: The hydrophilic layer (4) is provided with a plurality of flame-retardant sponges (5) at intervals on the side away from the absorbent layer (3), and the flame-retardant sponges (5) are provided with a plurality of protrusions (51) on the side away from the hydrophilic layer (4).

3. The water-absorbing nonwoven fabric for automobiles according to claim 1, characterized in that: The waterproof layer (2) is made of polypropylene fiber nonwoven fabric mixed with polytetrafluoroethylene.

4. The water-absorbing nonwoven fabric for automobiles according to claim 1, characterized in that: The absorbent layer (3) is formed by piercing a mixture of modified polyethylene fiber and hot melt wire.

5. The water-absorbing nonwoven fabric for automobiles according to claim 1, characterized in that: The hydrophilic layer (4) is made of a nonwoven polyester fiber that has been plasma-treated.

6. The water-absorbing automotive nonwoven fabric according to claim 1, characterized in that: The adhesive layer (1) is a hot melt adhesive film.

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