CN207130908U - A polyester fiber sound-absorbing board - Google Patents

Abstract

The utility model discloses a polyester fiber acoustic board, which comprises a polyester fiber board, an acoustic membrane and a cavity board; the cavity plate comprises a paper rectangular frame, and a plurality of polyester fiber gauze layers are adhered to two surfaces of the frame in the thickness direction; the polyester fiber gauze layer is at least 3 layers of polyester fiber cloth which are bonded together; the polyester fiber sound-absorbing board is formed by compounding a polyester fiber board, a cavity board, a sound-absorbing film, a cavity board and a polyester fiber board in the thickness direction. The utility model has the advantages that: the quality is lighter, has better sound absorption effect, still has flame retardant efficiency concurrently.

Description

A polyester fiber sound-absorbing board

technical field

The utility model belongs to the field of building decoration materials, in particular to a polyester fiber sound-absorbing board.

Background technique

Polyester fiber sound-absorbing board is an ideal sound-absorbing decorative material. It has the characteristics of environmental protection, flame retardancy, heat insulation, heat preservation, moisture resistance, mildew resistance, easy dust removal, easy cutting, parquet, simple construction, and excellent cost performance. Various patterns and colors are available to meet the decoration requirements of different styles and levels. Polyester fiber sound-absorbing panels are widely used in domestic decorative materials and acoustic engineering fields, and have been affirmed and praised by many domestic famous acoustic experts, and are deeply trusted and selected by interior designers and acoustic designers from all walks of life. The first choice for urban architectural acoustics, industrial noise reduction, product noise reduction and other projects. It is widely used in architectural decoration. Chinese patent document CN203452311U disclosed "a self-illuminating polyester fiber sound-absorbing panel" on February 26, 2014, which has various patterns, and its special sound-absorbing panel is made by screen printing process. The traditional polyester fiber sound-absorbing panel is integrally formed, and its sound-absorbing effect cannot meet higher requirements.

Contents of the invention

The utility model aims at inventing a composite polyester fiber sound-absorbing board, which is lighter in weight, has better sound-absorbing effect, and also has flame-retardant effect.

In order to achieve the above object, the utility model adopts the following technical scheme: a polyester fiber sound-absorbing board, including a polyester fiber board and a sound-absorbing film, and also includes a cavity board; the cavity board includes a paper rectangular frame, the frame thickness direction Several polyester fiber gauze layers are pasted on both sides; the polyester fiber gauze layer is at least 3 layers of polyester fiber cloth bonded together; the polyester fiber sound-absorbing board is made of polyester fiber board, It is composed of cavity board, sound-absorbing film, cavity board and polyester fiber board.

In this technical solution, polyester fiberboard is used on the inner and outer surfaces of the sound-absorbing panel to keep the appearance of the product flat, and the interior is designed as two cavity panels, with a sound-absorbing film sandwiched between the cavity panels, forming a polyester fiberboard in the thickness direction. Structure of fiberboard, cavity panel, sound-absorbing membrane, cavity panel, polyester fiberboard. The hollow board is a paper rectangular frame, and polyester fiber gauze layers are pasted on both surfaces in the thickness direction, and the polyester fiber gauze layer is formed by bonding at least three layers of polyester fiber cloth. In this design, the cavity board is used to replace part of the polyester fiber board in thickness, which reduces the weight, and the use of polyester fiber gauze layer can also make up for the sound absorption effect achieved by the reduced thickness of the polyester fiber board, and because the two paper rectangular frames There is a sound-absorbing film between them, which has a better absorption effect on the most common low-frequency noise in life. Bonding, thermosetting, etc. are optional for the composite process.

Preferably, the outer surface of the polyester fiber board is provided with concave and convex lines. These concave and convex lines can diffuse the noise, and part of the noise can interfere with each other and cancel out in the diffuse reflection, which is helpful for the sound absorption effect. At the same time, these concave-convex textures can be properly designed aesthetically to help enhance the aesthetics of the environment.

Preferably, the sound-absorbing film is made of polyurethane. Polyurethane sound-absorbing membrane has the function of absorbing and degrading low-frequency noise. The sound-absorbing mechanism is based on the fact that the synthetic material has a large specific surface area and high elasticity. Through a large number of tiny connected pores inside the material, when the sound wave penetrates into the material along these pores When it is inside, a series of damping, reflection, and friction will occur with the material, and the sound energy will be converted into heat energy and consumed, thereby achieving the effect of sound absorption. And combined with micro-perforation technology, according to the parameters provided by the manufacturer, the diameter of the perforation can reach 0.2mm, the sound absorption frequency can reach 3-4Oct, and the sound absorption coefficient can reach up to 0.89.

Preferably, the thickness of the sound-absorbing film is less than 0.5mm. The thinner sound-absorbing membrane is more easily deformed, and the deformation effect is better after being subjected to sound wave pressure, and the sound-absorbing effect is also better.

Preferably, the paper rectangular frame is cut from cardboard with a thickness of 1-2mm. The paper rectangular frame not only needs a thinner thickness, but also needs a certain strength. Therefore, in this project, a sufficiently thick cardboard is selected and cut as a whole, and the thickness is kept at 1~2mm.

Preferably, the interior of the rectangular paper frame is divided into at least 4 independent spaces by cardboard in the direction of length and width. At least 4 independent spaces are designed inside the paper space, and each independent space forms a small sound-absorbing space. The barriers between adjacent spaces play a supporting role for the polyester fiber gauze layer pasted on the outside, and also protect the paper space. The overall strength of the rectangular frame acts as a support.

Preferably, the distance between two parallel bundles of fibers in the polyester fiber cloth is at least 5 times the fiber diameter. The distance between adjacent parallel lines of the polyester fiber cloth selected in this scheme should be thin rather than dense, and the holes formed by the crossing of warp and latitude lines should be large rather than small. Larger pores allow more noise sound waves to enter and be eliminated.

Preferably, the polyester fiber board is a flame-retardant polyester fiber board. In order to improve the effect of fire prevention and flame retardancy, flame retardant polyester fiberboard is selected in this scheme.

In summary, the beneficial effects of the utility model are: lighter weight, better sound-absorbing effect, and flame-retardant effect.

Description of drawings

Fig. 1 is a structural representation of the utility model,

Figure 2 Schematic diagram of the structure of the cavity plate.

Among them: 1 polyester fiber board, 2 cavity board, 3 sound-absorbing film, 21 paper rectangular frame, 22 polyester fiber gauze layer.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

The embodiment shown in Figure 1 is a polyester fiber sound-absorbing board. The sound-absorbing board is sequentially composed of polyester fiber board 1, cavity board 2, sound-absorbing film 3, cavity board, and polyester fiber board in the thickness direction, and each layer is bonded. Among them, the polyester fiberboard is a flame-retardant polyester fiberboard, and the outer surface of the polyester fiberboard is provided with concave and convex lines; the sound-absorbing film is made of polyurethane with a thickness of 0.45 mm.

As shown in FIG. 2 , the main body of the cavity plate is a paper rectangular frame 21 cut from cardboard with a thickness of 1.5 mm. The interior of the paper rectangular frame is divided into 2×6 small rectangular grids by the same cardboard in the direction of length and width, and a number of polyester fiber gauze layers 22 are pasted on the two sides of the frame in the thickness direction. The gauze layers are all 3 layers of polyester fiber cloth bonded together. In the polyester fiber cloth used in this example, the distance between two parallel bundles of fibers is 6 times the fiber diameter.

This polyester fiber sound-absorbing panel replaces part of the thickness of the polyester fiberboard with a cavity, which reduces the weight. The sound-absorbing effect of the polyester fiber gauze layer compensates for the sound-absorbing effect of the removed polyester fiber sound-absorbing panel. The sound-absorbing film is used The sound-absorbing effect is further enhanced for low-frequency noise. The polyester fiberboard used is a flame-retardant polyester fiberboard, and the concave-convex lines designed on the surface also have a beautifying effect.

Claims (8)

1. a kind of polyester fibre acoustic panel, including polyester fiber board（1）And absorptive membrane（3）, it is characterized in that, in addition to cavity plate （2）；The cavity plate includes papery rectangular frame（21）, some polyester fibers are pasted with two faces in frame thickness direction Layer of cloth（22）；The polyester fibers layer of cloth is at least 3 layers of polyester fiber cloth to bond together；The polyester fibre acoustic panel It is combined in a thickness direction by polyester fiber board, cavity plate, absorptive membrane, cavity plate, polyester fiber board.

2. a kind of polyester fibre acoustic panel according to claim 1, it is characterized in that, on the face of the polyester fiber board outwardly If irregular lines.

3. a kind of polyester fibre acoustic panel according to claim 1 or 2, it is characterized in that, the absorptive membrane is polyurethane material Matter.

4. a kind of polyester fibre acoustic panel according to claim 3, it is characterized in that, the thickness of the absorptive membrane is less than 0.5mm。

5. a kind of polyester fibre acoustic panel according to claim 1 or 2, it is characterized in that, the papery rectangular frame is by hard Cardboard cutting forms, and thickness is 1 ~ 2mm.

6. a kind of polyester fibre acoustic panel according to claim 5, it is characterized in that, in length inside the papery rectangular frame At least four separate space is divided into by hardboard on wide area direction.

7. a kind of polyester fibre acoustic panel according to claim 1 or 2, it is characterized in that, it is parallel in the polyester fiber cloth Two bundle fibers spacing at least 5 times of fibre diameters.

8. a kind of polyester fibre acoustic panel according to claim 1 or 2, it is characterized in that, the polyester fiber board is fire-retardant Type polyester fiber board.