Regenerative acoustic board

Abstract

The utility model relates to a regenerative acoustic board which comprises a first board, a second board and a third board. The second board is a polyester fiber board; the middle core plate is arranged between the first plate and the second plate, the middle core plate comprises a plurality of plate fragments and TPU powder, the plate fragments are made of polyester fibers, and the plate fragments are wrapped with the TPU powder through mixed heating equipment; and the plate fragments wrapped with the TPU powder are laid between the first plate and the second plate and are subjected to composite forming under the heating and pressurizing conditions. According to the regenerated acoustical board, TPU hot melting powder is wrapped on the periphery of the polyester fiber block, a mixture is fed into the drying oven to be heated, and the heated mixture block is evenly laid on the polyester fiber standard board through the conveying belt in the temperature control channel. And then a polyester fiber standard board is covered on the laid surface to obtain a three-layer (or multi-layer) composite thickened board, so that the maximum recycling of defective polyester fiber boards can be realized, and high turnover can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of plate production, in particular to a regenerated sound-absorbing plate. Background Art

[0002] Polyester fiberboard is a decorative material with sound-absorbing function made of polyester fiber through hot pressing. 100% polyester fiber is made of cocoon cotton through high-tech hot pressing to achieve density diversity to ensure ventilation. Polyester fiberboard can meet the requirements of different sound absorption and noise reduction effects. It is widely used in the field of domestic sound insulation materials and acoustic engineering. It has been recognized and praised by many famous domestic acousticians, and is deeply trusted and selected by mechanical designers and acoustic designers from all walks of life. It has become the first choice of engineering materials such as architectural acoustics, industrial noise reduction, and product noise reduction in most cities in China.

[0003] A certain amount of defective boards will be produced in the production process of polyester fiberboards. For the defective boards produced by the production of polyester fiberboards and the residual materials produced by the production of products, the existing solution is to sell them directly to the recycling station for recycling. However, the economic benefits of recycling are low, and the maximum utilization of resources is not achieved, which invisibly increases the production cost for the enterprise. The second is that before the mass production of products with good polyester fiberboards, the defective polyester fiberboards are used as derivative processed products for trial production. However, the production standards of defective polyester fiberboards are not up to standard, and their characteristics are inconsistent with those of good polyester fiberboards (including gram weight, thickness, surface hardness and surface smoothness). The actual application of the debugged results is inconsistent with the product production standards and is insufficient for reference. The first solution is the least efficient recycling and is too backward in making full use of material resources. The second solution has low utilization rate, slow turnover and long consumption cycle. Utility Model Content

[0004] Therefore, the technical problem to be solved by the utility model is to overcome the problem in the prior art that the surplus materials and defective boards produced in the production of polyester fiberboards are difficult to be effectively recycled, resulting in waste of production materials.

[0005] In order to solve the above technical problems, the utility model provides a recycled sound-absorbing board, including: a first board, which is a polyester fiber board; a second board, which is a polyester fiber board; an intermediate core board, which is arranged between the first board and the second board, the intermediate core board including a plurality of board fragments and TPU powder, the material of the board fragments is polyester fiber, the board fragments are wrapped with TPU powder on the outside through a mixing and heating device, and the board fragments wrapped with TPU powder are laid between the first board and the second board and compositely formed under heating and pressurizing conditions. In the recycled sound-absorbing board of the utility model, the polyester fiber board itself does not have adhesiveness, so it cannot be made to have adhesiveness without adding adhesive material. The utility model is to make a core board of a defective polyester fiber board and then heat the TPU powder and bond it with the polyester fiber to make a composite material board.

[0006] In one embodiment of the present invention, the plurality of board fragments are defective polyester fiber boards cut into irregular blocks by a cutting machine.

[0007] In one embodiment of the present invention, both the first plate and the second plate are rectangular flat plates, and the first plate and the second plate have the same size.

[0008] In one embodiment of the present invention, the length of the rectangular cross-section of the first plate and the second plate is 2440 mm, and the width of the rectangular cross-section of the first plate and the second plate is 1220 mm.

[0009] In one embodiment of the present invention, the first plate material, the second plate material and the middle core plate are pressurized and cooled after composite molding.

[0010] In one embodiment of the present invention, the first plate and the second plate are bonded and compounded with a plurality of plate fragments by heating and melting TPU powder.

[0011] In one embodiment of the present invention, the temperature of mixing and heating the plate pieces and TPU powder is 150°C.

[0012] In an embodiment of the present invention, the thickness of the first plate is 5 mm.

[0013] In an embodiment of the present invention, the thickness of the two plates is 5 mm.

[0014] In one embodiment of the present invention, the thickness of the middle core plate is 10-30 mm.

[0015] The above technical solution of the utility model has the following beneficial effects compared with the prior art:

[0016] The regenerated sound-absorbing board described in the utility model is to put the defective polyester fiber board into the cutting equipment and process it into irregular blocks. After being sprayed with TPU powder, it enters the mixing box for sufficient mixing, so that the polyester fiber block is wrapped with TPU hot-melt powder. Then the mixture is sent to the oven for heating. In the temperature-controlled channel, the heated mixed block is evenly laid on the 2440×1220 polyester fiber standard board through the conveyor belt. Then a polyester fiber standard board is covered on the laid surface. The semi-finished board after three-layer composite is pressurized and cooled. The three-layer (or multi-layer) composite thickened board is obtained, which can maximize the recycling of defective polyester fiber boards and achieve high turnover. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to the specific embodiments of the utility model in combination with the accompanying drawings, wherein

[0018] Figure 1 It is a cross-sectional view of a regenerative sound-absorbing panel in a preferred embodiment of the utility model;

[0019] Figure 2 In the preferred embodiment of the utility model Figure 1 A partial enlarged view of the middle A;

[0020] Figure 3 This is a schematic diagram of the structure of the plate fragments in the preferred embodiment of the utility model;

[0021] Figure 4 It is a schematic diagram of the structure of the regenerated sound-absorbing board production equipment in the preferred embodiment of the utility model.

[0022] Explanation of the reference numerals in the drawings in the specification: first plate 1 , second plate 2 , middle core plate 3 , plate fragments 31 , press 100 , pressurizing and temperature controlling device 200 , integrated stirring and heating device 300 . DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0024] Reference Figure 1-4As shown, the regenerative sound-absorbing board of the utility model comprises three parts: a first plate 1, a second plate 2 and an intermediate core plate 3; the first plate 1 is a polyester fiber plate; the second plate 2 is a polyester fiber plate; the intermediate core plate 3 is arranged between the first plate 1 and the second plate 2, and the intermediate core plate 3 comprises a plurality of plate fragments 31 and TPU powder, the material of the plate fragments 31 is polyester fiber, the plate fragments 31 are wrapped with TPU powder on the outside through a mixing and heating device, and the plate fragments 31 wrapped with TPU powder are laid between the first plate 1 and the second plate 2 and compositely formed under heating and pressurizing conditions. After composite forming, the first plate 1, the second plate 2 and the intermediate core plate 3 are pressurized and cooled.

[0025] TPU hot melt powder and polyester staple fiber belong to the same material, both are polyethylene terephthalate, and their melting points are both 150℃. They can melt and flow quickly after heating, and can better cover the polyester fiber board. Moreover, the TPU material itself has good mechanical properties. It can be used for a long time in the temperature range of 55-60℃, and can withstand high temperatures of 65℃ and low temperatures of -70℃ for short-term use. The mechanical properties are also very little affected by high and low temperatures. Moreover, TPU can be directly used for food packaging. It is non-toxic and tasteless, and has good hygiene and safety. Therefore, it has no effect on health and is an environmentally friendly material. Combining the above material properties with the strong processing plasticity of polyester fiberboard, combined with TPU powder, a composite material board will be made, which will not affect the sound absorption effect of polyester fiberboard, but can also make use of the defective polyester fiberboard, and can also make the maximum use of resources and reduce the production cost of the enterprise.

[0026] In the above structure, the plurality of board fragments 31 are defective polyester fiber boards cut into irregular blocks by a cutting machine.

[0027] In the above structure, the first plate 1 and the second plate 2 are both rectangular flat plates, and the first plate 1 and the second plate 2 have the same size. The length of the rectangular cross section of the first plate 1 and the second plate 2 is 2440 mm, and the width of the rectangular cross section of the first plate 1 and the second plate 2 is 1220 mm. The first plate 1 and the second plate 2 are bonded and compounded with a plurality of plate fragments 31 by heating and melting the TPU powder.

[0028] In the above structure, the temperature of mixing and heating the plate pieces 31 and the TPU powder is 150°C.

[0029] In the above structure, the thickness of the first plate 1 is 5 mm, the thickness of the second plate 2 is 5 mm, and the thickness of the middle core plate 3 is 10 to 30 mm.

[0030] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention of the utility model.

Claims

1. A regenerative sound-absorbing board, characterized in that: include, A first sheet material, which is a polyester fiber sheet; A second sheet material, which is a polyester fiberboard; The intermediate core plate is arranged between the first plate and the second plate, and the intermediate core plate includes a plurality of plate fragments and TPU powder. The plurality of plate fragments are polyester fiber defective plates cut into irregular blocks by a cutting machine. The material of the plate fragments is polyester fiber. The plate fragments wrapped with TPU powder are laid between the first plate and the second plate and compositely formed under heating and pressurizing conditions.

2. The regenerative sound absorbing board according to claim 1, characterized in that: The first plate and the second plate are both rectangular flat plates, and the first plate and the second plate have the same size.

3. The regenerative sound absorbing board according to claim 2, characterized in that: The length of the rectangular cross-section of the first plate and the second plate is 2440 mm, and the width of the rectangular cross-section of the first plate and the second plate is 1220 mm.

4. The regenerative sound absorbing panel according to claim 1, characterized in that: The first plate, the second plate and the middle core plate are compositely formed and then pressurized and cooled.

5. The regenerative sound absorbing panel according to claim 1, characterized in that: The first plate and the second plate are bonded and compounded with a plurality of plate fragments by heating and melting the TPU powder.

6. The regenerative sound absorbing panel according to claim 1, characterized in that: The temperature of mixing and heating the plate pieces and TPU powder was 150°C.

7. The regenerative sound absorbing board according to claim 3, characterized in that: The thickness of the first plate is 5 mm.

8. The regenerative sound absorbing board according to claim 7, characterized in that: The thickness of the two plates is 5 mm.

9. The regenerative sound absorbing board according to claim 8, characterized in that: The thickness of the middle core plate is 10-30 mm.

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