Multi-layer composite medium-density fiberboard

Abstract

The utility model relates to the technical field of artificial boards, and discloses a multi-layer composite medium-density fiberboard which comprises a fiberboard core board layer, a flame-retardant layer and a fiberboard surface layer are sequentially bonded on the upper surface of the fiberboard core board layer from bottom to top, and a sound insulation layer and a fiberboard bottom layer are sequentially bonded on the lower surface of the fiberboard core board layer from top to bottom. The fiberboard core board layer comprises a reinforced skeleton layer, and an upper base layer and a lower base layer which are bonded on the upper and lower surfaces of the reinforced skeleton layer; the reinforcing framework layer comprises a plurality of cylindrical supporting barrels arranged in an array mode, the adjacent supporting barrels are connected through transverse and longitudinal connecting rib plates, a center column is arranged in the center of the interior of each supporting barrel, and the center columns and the supporting barrels are connected into a whole through reinforcing ribs. According to the utility model, multiple layers are compounded, so that the whole board has good flame retardance, sound insulation and compression resistance.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of artificial board, specifically relates to a multilayer composite medium density fiber board. BACKGROUND

[0002] Medium density fiber board is a kind of artificial board material that wood or plant fiber is mixed into adhesive and waterproof agent etc. by mechanical separation and chemical treatment means, and is formed by high temperature and high pressure again.The board of single material itself has the performance of insufficient flame-retardant, sound insulation, compression resistance etc., therefore, multilayer composite is needed to improve the overall performance. SUMMARY

[0003] The utility model discloses a multilayer composite medium density fiber board, which has flame-retardant and sound-insulating properties and enhanced pressure-bearing performance.

[0004] To achieve the above object, the utility model adopts the following technical scheme: a multilayer composite medium density fiber board, comprising a fiber board core layer, a flame-retardant layer and a fiber board surface layer are sequentially bonded on the upper surface of the fiber board core layer from bottom to top, a sound-insulating layer and a fiber board bottom layer are sequentially bonded on the lower surface of the fiber board core layer from top to bottom, the fiber board core layer comprises a reinforcing framework layer and upper and lower base layers bonded on the upper and lower surfaces of the reinforcing framework layer, the reinforcing framework layer comprises a plurality of cylindrical support cylinders arranged in an array, adjacent support cylinders are connected to each other by transverse and longitudinal connecting rib plates, a central column is arranged in the inner center of the support cylinder, and the central column is connected to the support cylinder as a whole by a reinforcing rib.

[0005] Preferably, the upper and lower ends of the central column are higher than the plane of the support cylinder, a plurality of first positioning holes are arranged in an array on the lower base layer, a plurality of second positioning holes are arranged in an array on the upper base layer, the first and second positioning holes each correspond to the central column, and the upper and lower ends of the central column can be respectively clamped into the first and second positioning holes.

[0006] Preferably, the first and second positioning holes are one of blind holes or through holes.

[0007] Preferably, the sound-insulating layer comprises a sound-insulating felt layer and a sound-insulating cotton layer sequentially arranged from top to bottom, the upper surface of the sound-insulating felt layer is provided with a first fiber mesh cloth layer, and the lower surface of the sound-insulating cotton layer is provided with a second fiber mesh cloth layer.

[0008] Preferably, the flame-retardant layer comprises a porous honeycomb fiber board layer, and the pores of the porous honeycomb fiber board layer are filled with a flame-retardant material.

[0009] Thanks to the above technical scheme, the utility model has the following beneficial effects:

[0010] The utility model discloses a fibreboard core board layer, fire -retardant layer, sound insulation layer, fibreboard surface layer, fibreboard bottom layer multilayer composite, make the board have good fire -retardant and sound insulation performance, surface layer and bottom layer can also very good protection to the inside core layer, be provided with the reinforcing framework layer in the fibreboard core board layer, further strengthen the pressure -bearing capacity of board, prevent the deformation and make the whole board has good pressure -resisting capacity. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a structure schematic diagram of multilayer composite medium density fibreboard of the utility model;

[0012] Figure 2 It is the exploded structure schematic diagram of fibreboard core board layer of the utility model;

[0013] Figure 3 It is the structure of the utility model's Figure 2 The structure enlarged view of A;

[0014] Figure 4 It is the cross section view of sound insulation layer of the utility model;

[0015] Figure 5 It is the structure schematic diagram of fire -retardant layer of the utility model;

[0016] In the drawing: 1-fibreboard core board layer, 2-sound insulation layer, 21-sound insulation felt layer, 22-sound insulation cotton layer, 23-first fibre mesh cloth layer, 24-second fibre mesh cloth layer, 3-fire -retardant layer, 31-porous honeycomb fibreboard layer, 32-fire -retardant material, 4-fibreboard bottom layer, 5-fibreboard surface layer, 11-reinforcing framework layer, 12-lower base layer, 121-first positioning hole, 13-upper base layer, 131-second positioning hole, 111-support cylinder, 112-connection web, 113-center column, 114-reinforcing rib. DETAILED DESCRIPTION

[0017] For the person skilled in the art to better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Unless otherwise defined, all technical and scientific terms used in the present application have the same meanings as those commonly understood by the person skilled in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments and are not intended to limit the present application. The terms "first", "second", and the like in the specification and claims of the present application and the above drawings are used to distinguish different objects, and are not used to describe a specific order. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but can optionally include steps or units not listed or can optionally include other steps or units inherent to the process, method, product or device.

[0018] Reference herein to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of the present application. The phrase appears at various places in the specification does not necessarily refer to the same embodiment, nor is it necessarily mutually exclusive of other embodiments. It is explicitly and implicitly understood that the embodiments described herein can be combined with other embodiments.

[0019] As shown in Figure 1 , Figure 2 and Figure 3 , a multi-layer composite medium density fiberboard comprises a fiberboard core layer 1, an upper surface of the fiberboard core layer 1 is sequentially bonded from bottom to top with a fire-retardant layer 3 and a fiberboard surface layer 5, a lower surface of the fiberboard core layer 1 is sequentially bonded from top to bottom with a sound insulation layer 2 and a fiberboard bottom layer 4, the fiberboard core layer 1 comprises a reinforcing framework layer 11 and an upper base layer 13 and a lower base layer 12 bonded to the upper and lower surfaces of the reinforcing framework layer 11; the reinforcing framework layer 11 comprises a plurality of cylindrical support cylinders 111 arranged in an array, adjacent support cylinders 111 are connected to each other by transverse and longitudinal connecting rib plates 112, the inside center of the support cylinder 111 is provided with a center column 113, and the center column 113 is connected integrally with the support cylinder 111 by a reinforcing rib 114.

[0020] As shown in Figure 2 , Figure 3As shown, in an embodiment, the upper and lower ends of the center column 113 are higher than the plane of the support cylinder 111, a plurality of first positioning holes 121 are arranged on the lower base layer 12, a plurality of second positioning holes 131 are arranged on the upper base layer 13, the first positioning holes 121 and the second positioning holes 131 each correspond to the center column 113, and the upper and lower ends of the center column 113 can be respectively clamped in the first positioning holes 121 and the second positioning holes 131. The first positioning holes 121 and the second positioning holes 131 are one of blind holes or through holes. By arranging the first positioning holes 121 and the second positioning holes 131, the upper base layer 13 and the lower base layer 12 can be aligned and attached to the reinforcing framework layer 11.

[0021] As Figure 4 shown, the sound insulation layer 2 comprises a sound insulation felt layer 21 and a sound insulation cotton layer 22 arranged in sequence from top to bottom, the upper surface of the sound insulation felt layer 21 is provided with a first fiber mesh cloth layer 23, and the lower surface of the sound insulation cotton layer 22 is provided with a second fiber mesh cloth layer 24. Each layer is attached as a whole by an adhesive. The sound insulation felt has a higher density and is a sound insulation material, and the sound insulation cotton has a relatively low density and is a sound absorption material, and the two cooperate to improve the sound insulation effect, and meanwhile, by arranging the first fiber mesh cloth layer 23 and the second fiber mesh cloth layer 24, the fiber mesh cloth is woven from high-strength fibers and has good tensile resistance, thereby playing a role in strengthening the structure of the sound insulation layer 2.

[0022] As Figure 5 shown, the fireproof layer 3 comprises a porous honeycomb fiber plate layer 31, and the holes of the porous honeycomb fiber plate layer 31 are filled with a fireproof material 32. The porous honeycomb fiber plate layer 31 strengthens the structure of the fireproof layer. The fireproof material 32 is a fireproof filler mixed with epoxy resin and filled in the holes, and the fireproof filler is one or a mixture of several of aluminum hydroxide, magnesium hydroxide and silicate materials.

[0023] The above has made a detailed description of the present application in general, but some modifications or improvements can be made on the basis of the present application, which is obvious to those skilled in the art. Therefore, the modifications or improvements without departing from the spirit of the present application are within the protection scope of the present application.

Claims

1. A multi-layered composite medium density fiberboard, characterized by: The fiberboard core layer is sequentially bonded with a fire-retardant layer and a fiberboard surface layer from top to bottom on the upper surface of the fiberboard core layer, and sequentially bonded with a sound insulation layer and a fiberboard bottom layer from top to bottom on the lower surface of the fiberboard core layer, and the fiberboard core layer comprises a reinforcing framework layer and upper and lower base layers bonded on the upper and lower surfaces of the reinforcing framework layer; the reinforcing framework layer comprises a plurality of cylindrical support cylinders arranged in an array, adjacent support cylinders are connected with each other by transverse and longitudinal connecting rib plates, and the inside of the support cylinders is provided with a central column, which is connected with the support cylinders as a whole by a reinforcing rib.

2. A multi-layered composite medium density fiberboard according to claim 1, characterized in that: The upper and lower ends of the central column are higher than the plane of the support cylinders, a plurality of first positioning holes are arranged in an array on the lower base layer, a plurality of second positioning holes are arranged in an array on the upper base layer, the first and second positioning holes correspond to the central column one by one, and the upper and lower ends of the central column can be respectively clamped in the first and second positioning holes.

3. A multi-layered composite medium density fiberboard according to claim 2, characterized in that: The first and second positioning holes are one of blind holes or through holes.

4. A multi-layered composite medium density fiberboard according to claim 1, characterized in that: The sound insulation layer comprises a sound insulation felt layer and a sound insulation cotton layer sequentially arranged from top to bottom, the upper surface of the sound insulation felt layer is provided with a first fiber mesh cloth layer, and the lower surface of the sound insulation cotton layer is provided with a second fiber mesh cloth layer.

5. A multi-layered composite medium density fiberboard according to claim 1, characterized in that: The fire-retardant layer comprises a porous honeycomb fiberboard layer, and the pores of the porous honeycomb fiberboard layer are filled with a fire-retardant material.

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