Sound-absorbing and wave-absorbing adhesive tape for automotive trim

Abstract

The utility model discloses an automobile interior sound-absorbing and wave-absorbing adhesive tape which comprises a first release layer, a first adhesive layer is fixedly connected to the lower side wall of the first release layer, a base layer is fixedly connected to the lower side wall of the first adhesive layer, a wave-absorbing layer is fixedly connected to the lower side wall of the base layer, and a second adhesive layer is fixedly connected to the lower side wall of the wave-absorbing layer. The lower side wall of the wave absorbing layer is fixedly connected with a second adhesive layer, and the lower side wall of the second adhesive layer is fixedly connected with a second release layer; the base layer is composed of a first non-woven fabric layer, a sound absorbing layer and a second non-woven fabric layer which are sequentially arranged from top to bottom, and the sound absorbing layer is composed of a sound absorbing cotton body, a polymer fiber layer and a metal micro powder wave absorbing coating which are sequentially arranged from top to bottom. According to the bidirectional sound-absorbing adhesive tape, due to the arrangement of the wave-absorbing layer and the sound-absorbing layer, the bidirectional sound-absorbing adhesive tape has the advantage of bidirectional sound-absorbing and wave-absorbing, and has certain wave-absorbing property, sound-absorbing property and air permeability, so that the required sound-absorbing and wave-absorbing effects can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of adhesive tapes, in particular to a sound-absorbing and wave-absorbing adhesive tape for automobile interior decoration. Background Art

[0002] There are a large number of interior decorations in cars, such as side leather, sound insulation cotton in door panels, internal components of the car body, ceiling cloth, etc., which all use tapes during the installation process to fix and position them. However, the existing tapes are too simple. Most of them are made of plastic film matrix, cloth matrix or foam coated with adhesive, which cannot meet the requirements for flame retardancy, buffering and wave absorption performance. Although general foam tapes have certain buffering properties, they are made of soft foam, which has poor tensile and tear resistance. The tape is easily damaged from the foam layer during use, becoming a weak point in the mechanical structure of the entire material. In addition, the aging resistance of the foam is also poor. When used in automobiles, the corresponding interior parts are used for a short time and require frequent maintenance.

[0003] Sound-absorbing cotton can be divided into glass fiber sound-absorbing cotton and polyester fiber sound-absorbing cotton. These two products are different, but the sound-absorbing effect is basically the same. However, glass fiber is not environmentally friendly, not convenient for construction, and easily causes itching when touching human skin. The sound-absorbing performance of sound-absorbing cotton will directly affect the driving comfort of the whole vehicle, and in serious cases, it will cause physical and mental harm to the driver and passengers. At present, the structure of automobile sound-absorbing cotton is simple and does not match the physical properties of sound wave transmission, so its absorption ability is greatly reduced.

[0004] In a complex electromagnetic environment, the electromagnetic compatibility problem between electronic components will become increasingly serious. The existing tape has a relatively single electromagnetic absorption direction and a relatively poor electromagnetic absorption effect, which makes it impossible to achieve two-way electromagnetic absorption and improve the absorption effect. It is urgent to develop a car interior sound-absorbing and wave-absorbing tape that can absorb excess electromagnetic waves while meeting the bonding requirements, thereby effectively solving the electromagnetic compatibility problem between electronic components. Utility Model Content

[0005] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and to provide a sound-absorbing and wave-absorbing tape for automobile interior decoration. The utility model has the advantages of two-way sound and wave absorption through the arrangement of the wave-absorbing layer and the sound-absorbing layer, so that the tape has certain wave absorption, sound absorption and air permeability, thereby facilitating the improvement of the required sound absorption and wave absorption effects;

[0006] The buffer strip is fixed and connected by reinforcing ribs to avoid interlayer damage in the buffer strip layer during use, and at the same time, the interlayer connection between the sound-absorbing layer and the second non-woven fabric layer, and between the first non-woven fabric layer, the sound-absorbing layer and the second non-woven fabric layer is more stable, thereby improving the tensile and tear resistance of the entire tape, and having good shape retention, high strength and elastic recovery ability, and the tape is easy to produce and process;

[0007] Two non-woven fabric layers are provided, and the non-woven fabric layers are made of hemp material, which ensures the strength performance and meets the use requirements.

[0008] The utility model also provides the above-mentioned automobile interior sound-absorbing and wave-absorbing tape, comprising: a first release layer, a first adhesive layer is fixedly connected to the lower side wall of the first release layer, a base layer is fixedly connected to the lower side wall of the first adhesive layer, a wave-absorbing layer is fixedly connected to the lower side wall of the base layer, a second adhesive layer is fixedly connected to the lower side wall of the wave-absorbing layer, and a second release layer is fixedly connected to the lower side wall of the second adhesive layer;

[0009] The base layer is composed of a first non-woven fabric layer, a sound-absorbing layer and a second non-woven fabric layer arranged in sequence from top to bottom, and the sound-absorbing layer is composed of a sound-absorbing cotton body, a polymer fiber layer and a metal micro-powder absorbing coating layer arranged in sequence from top to bottom;

[0010] The upper side wall of the sound-absorbing cotton body is embedded in the sound-absorbing cotton body and is provided with a plurality of sound-conducting holes, and the interior of the base layer is fixedly connected with reinforcing ribs.

[0011] According to the automobile interior sound-absorbing and wave-absorbing tape, the reinforcing ribs are composed of transverse reinforcing ribs and vertical reinforcing ribs that are obliquely staggered, and the sound-absorbing layer 302 is effectively fixed.

[0012] According to the automobile interior sound-absorbing and wave-absorbing tape, the reinforcing ribs penetrate the first non-woven fabric layer, the sound-absorbing layer and the second non-woven fabric layer, further improving the bonding strength between the layers and making it less likely for interlayer damage to occur.

[0013] According to the automobile interior sound-absorbing and wave-absorbing tape, the sound-conducting hole is surrounded by sound-insulating glass, the bottom diameter of the sound-conducting hole embedded in the sound-absorbing cotton body is larger than the opening diameter on the side of the sound-absorbing cotton body, and the side wall of the sound-conducting hole located between the bottom surface and the opening forms an angle of 45 to 60 degrees with the side of the sound-absorbing cotton body.

[0014] According to the automobile interior sound-absorbing and wave-absorbing tape, the sound-absorbing cotton body is one of foam and sponge. These materials have good cushioning properties and also have certain sound insulation properties, and are suitable for the pasting of automobile parts and accessories.

[0015] According to the automobile interior sound-absorbing and wave-absorbing tape, the polymer fiber layer is a polyester fiber material, and the metal micropowder wave-absorbing coating is a metal micropowder wave-absorbing material. The metal micropowder wave-absorbing material generally refers to a metal micropowder with a particle size of 0.5 to 20 μm. The size of the metal micropowder currently used is usually 1 to 10 μm. The metal micropowder wave-absorbing material has the advantages of high Curie temperature, good temperature stability, high magnetization intensity in magnetic materials, large microwave magnetic permeability, and high dielectric constant, so it is widely used in the field of wave-absorbing materials. It mainly absorbs electromagnetic waves through hysteresis loss, eddy current loss, etc.

[0016] According to the automobile interior sound-absorbing and wave-absorbing tape, the first non-woven fabric layer and the second non-woven fabric layer are both made of hemp non-woven fabric to improve the structural strength of the non-woven fabric.

[0017] According to the automobile interior sound-absorbing and wave-absorbing tape, the thickness of the base layer is 1 to 5 mm, and a thicker base layer is conducive to the buffering effect and the sound insulation effect. The thickness of the first adhesive layer and the second adhesive layer is 40 to 100 μm.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0020] Figure 1 This is a schematic diagram of the structure of a sound-absorbing and wave-absorbing tape for automobile interior decoration according to the utility model;

[0021] Figure 2 The utility model is a schematic diagram of the structure of the sound-absorbing layer in the automobile interior sound-absorbing and wave-absorbing tape.

[0022] Legend:

[0023] 1. First release layer; 2. First adhesive layer; 3. Base layer; 301. First non-woven fabric layer; 302. Sound-absorbing layer; 3021. Sound-absorbing cotton body; 3022. Polymeric fiber layer; 3023. Metal micro-powder absorbing coating; 3024. Sound-conducting holes; 303. Second non-woven fabric layer; 4. Absorbing layer; 5. Second adhesive layer; 6. Second release layer; 7. Reinforcing ribs. DETAILED DESCRIPTION

[0024] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0025] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] Reference Figure 1-2 The utility model embodiment is a car interior sound-absorbing and wave-absorbing tape, which includes: a first release layer 1, a first adhesive layer 2 is fixedly connected to the lower side wall of the first release layer 1, a base layer 3 is fixedly connected to the lower side wall of the first adhesive layer 2, an absorbing layer 4 is fixedly connected to the lower side wall of the base layer 3, a second adhesive layer 5 is fixedly connected to the lower side wall of the absorbing layer 4, a second release layer 6 is fixedly connected to the lower side wall of the second adhesive layer 5, the first non-woven fabric layer 301 and the second non-woven fabric layer 303 are both made of linen non-woven fabric to improve the structural strength of the non-woven fabric, the thickness of the base layer is 1 to 5 mm, and a thicker base layer is conducive to the cushioning effect and the sound insulation effect, and the thickness of the first adhesive layer and the second adhesive layer is 40 to 100 μm.

[0027] The base layer 3 is composed of a first non-woven fabric layer 301, a sound absorbing layer 302 and a second non-woven fabric layer 303 arranged in sequence from top to bottom. The sound absorbing layer 302 is composed of a sound absorbing cotton body 3021, a polymer fiber layer 3022 and a metal micro-powder absorbing coating 3023 arranged in sequence from top to bottom. The sound absorbing cotton body 3021 is one of foam and sponge. These materials have good cushioning properties and certain sound insulation properties, and are suitable for pasting automotive parts. The polymer fiber layer 3022 is a polyester fiber material. The metal micro-powder absorbing coating 3023 is a metal micro-powder absorbing material. The metal micro-powder absorbing material generally refers to a metal micro-powder with a particle size of 0.5 to 20 μm. The size of the metal micro-powder currently used is usually 1 to 10 μm. The metal micro-powder absorbing material has the advantages of high Curie temperature, good temperature stability, high magnetization intensity in magnetic materials, large microwave magnetic permeability, and high dielectric constant, so it is widely used in the field of absorbing materials. It mainly absorbs electromagnetic waves through hysteresis loss, eddy current loss and other means.

[0028] A plurality of sound-conducting holes 3024 are provided on the upper side wall of the sound-absorbing cotton body 3021 and embedded in the sound-absorbing cotton body 3021. The sound-conducting holes 3024 are surrounded by soundproof glass. The bottom diameter of the sound-conducting holes 3024 embedded in the sound-absorbing cotton body 3021 is larger than the opening diameter on the side of the sound-absorbing cotton body 3021. The side wall of the sound-conducting holes 3024 located between the bottom surface and the opening forms an angle of 45 to 60° with the side of the sound-absorbing cotton body 3021.

[0029] The base layer 3 is internally fixedly connected with reinforcing ribs 7, which are composed of transverse reinforcing ribs and vertical reinforcing ribs arranged obliquely and staggeredly, and effectively fix the sound-absorbing layer 302. The reinforcing ribs 7 pass through the first non-woven fabric layer 301, the sound-absorbing layer 302 and the second non-woven fabric layer 303, further improving the bonding strength between the layers and preventing interlayer damage from occurring.

[0030] Working principle: This tape has good sound-absorbing and wave-absorbing properties. It is also a car interior sound-absorbing and wave-absorbing tape with excellent mechanical properties. The car interior sound-absorbing and wave-absorbing tape can be installed on car interior parts including ceilings, door panels, coat racks, luggage boxes, etc. and materials between car bodies. It has the characteristics of sound absorption, heat insulation, and shock absorption.

[0031] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A sound-absorbing and wave-absorbing tape for automobile interior, characterized in that: include: A first release layer (1), the lower side wall of the first release layer (1) being fixedly connected to a first adhesive layer (2), the lower side wall of the first adhesive layer (2) being fixedly connected to a base layer (3), the lower side wall of the base layer (3) being fixedly connected to an absorbing layer (4), the lower side wall of the absorbing layer (4) being fixedly connected to a second adhesive layer (5), and the lower side wall of the second adhesive layer (5) being fixedly connected to a second release layer (6); The base layer (3) is composed of a first non-woven fabric layer (301), a sound absorbing layer (302) and a second non-woven fabric layer (303) which are sequentially arranged from top to bottom; the sound absorbing layer (302) is composed of a sound absorbing cotton body (3021), a polymer fiber layer (3022) and a metal micro-powder absorbing coating (3023) which are sequentially arranged from top to bottom; A plurality of sound-conducting holes (3024) are provided on the upper side wall of the sound-absorbing cotton body (3021) and embedded in the sound-absorbing cotton body (3021), and reinforcing ribs (7) are fixedly connected to the interior of the base layer (3).

2. The automobile interior sound-absorbing and wave-absorbing tape according to claim 1, characterized in that: The reinforcing ribs (7) are composed of transverse reinforcing ribs and vertical reinforcing ribs that are arranged obliquely and staggered.

3. The automobile interior sound-absorbing and wave-absorbing tape according to claim 1, characterized in that: The reinforcing ribs (7) penetrate the first non-woven fabric layer (301), the sound absorbing layer (302) and the second non-woven fabric layer (303).

4. The automobile interior sound-absorbing and wave-absorbing tape according to claim 1, characterized in that: The sound guide hole (3024) is surrounded by soundproof glass, the bottom diameter of the sound guide hole (3024) embedded in the sound-absorbing cotton body (3021) is larger than the opening diameter on the side of the sound-absorbing cotton body (3021), and the side wall of the sound guide hole (3024) located between the bottom surface and the opening forms an angle of 45 to 60 degrees with the side of the sound-absorbing cotton body (3021).

5. The automobile interior sound-absorbing and wave-absorbing tape according to claim 1, characterized in that: The sound-absorbing cotton body (3021) is one of foam and sponge.

6. The automobile interior sound-absorbing and wave-absorbing tape according to claim 1, characterized in that: The polymer fiber layer (3022) is a polyester fiber material, and the metal micro-powder absorbing coating (3023) is a metal micro-powder absorbing material.

7. The automobile interior sound-absorbing and wave-absorbing tape according to claim 1, characterized in that: The first non-woven fabric layer (301) and the second non-woven fabric layer (303) are both made of hemp non-woven fabric.

8. The automobile interior sound-absorbing and wave-absorbing tape according to claim 1, characterized in that: The thickness of the base layer is 1-5 mm, and the thickness of the first adhesive layer and the second adhesive layer is 40-100 μm.

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