Anti-cracking reinforced multi-layer composite board

Abstract

The utility model discloses an anti-cracking reinforced multi-layer composite board which is formed by sequentially compounding a melamine impregnated paper layer, a transverse wood grain solid wood chip, a solid wood chip repeated overlapping layer, a solid wood chip alternate overlapping layer, a solid wood chip repeated overlapping layer, a transverse wood grain solid wood chip and a melamine impregnated paper layer from bottom to top. The solid wood chip repeated overlapping layer is formed by repeatedly overlapping two layers of longitudinal wood grain solid wood chips; the solid wood sheet alternate stacking layer is formed by alternately stacking a plurality of transverse wood grain solid wood sheets and a plurality of longitudinal wood grain solid wood sheets, and the lowest layer and the uppermost layer of the solid wood sheet alternate stacking layer are the transverse wood grain solid wood sheets respectively. The surface of the composite board is not prone to cracking, the composite board is resistant to abrasion, good in strength and stability, free of formaldehyde and good in environmental protection performance, the bearing strength in the longitudinal direction is improved in a targeted mode, and the problem of bending deformation in the longitudinal direction is not prone to occurring.

Description

Technical Field

[0001] The utility model relates to the technical field of composite wood boards, in particular to an anti-cracking reinforced multi-layer composite board. Background Art

[0002] At present, multi-layer solid wood composite board is widely used in the field of furniture manufacturing. Multi-layer solid wood composite board is made of three or more layers of single board or thin board wood board glued and hot pressed. Compared with ordinary plywood, multi-layer solid wood composite board has the advantages of small deformation, high strength, good internal quality and good flatness. It can be produced in different thicknesses, with criss-crossed multi-layer plywood as the base material, and solid wood veneer or technical wood as the surface, and is made through cold pressing, hot pressing, sanding and other processes.

[0003] In the prior art, the structure of a multi-layer solid wood composite board usually includes a solid wood base plate and a surface decoration layer pasted on the solid wood base plate. The solid wood base plate is composed of a plurality of solid wood slices with transverse wood grains and a plurality of solid wood slices with longitudinal wood grains alternately stacked, glued and pressed. There are two main technical problems with this multi-layer solid wood composite board: first, after the surface decoration layer is pasted on the solid wood base plate, its surface is prone to cracking, is not wear-resistant, has insufficient strength and stability, and usually contains formaldehyde, which is environmentally friendly; second, in the prior art, the board material used in furniture such as wardrobes is often in the shape of a long board. The longer the length of the board, the worse the bearing capacity of the board in the length direction. However, the bearing strength of the existing multi-layer solid wood composite board in the transverse and longitudinal directions is basically the same, and the bearing strength in the longitudinal direction is not specifically improved, which is prone to bending and deformation in the longitudinal direction. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an anti-cracking reinforced multi-layer composite board based on the above-mentioned deficiencies in the prior art, the surface of which is not easy to crack, is wear-resistant, has good strength and stability, does not contain formaldehyde, has good environmental protection, and specifically improves the longitudinal bearing strength, and is not prone to longitudinal bending deformation problems.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a crack-proof reinforced multi-layer composite board, which is composed of a melamine impregnated paper layer, a transverse wood grain solid wood slice, a repeated superposition layer of solid wood slices, an alternating superposition layer of solid wood slices, a repeated superposition layer of solid wood slices, a transverse wood grain solid wood slice and a melamine impregnated paper layer from bottom to top; the repeated superposition layer of solid wood slices is composed of two layers of repeated superposition of longitudinal wood grain solid wood slices; the alternating superposition layer of solid wood slices is composed of a plurality of transverse wood grain solid wood slices and a plurality of longitudinal wood grain solid wood slices alternately superimposed, and the bottommost layer and the topmost layer of the alternating superposition layer of solid wood slices are respectively transverse wood grain solid wood slices.

[0006] Preferably, a fireproof adhesive layer is coated between adjacent melamine impregnated paper layers and transverse wood grain solid wood slices, between adjacent transverse wood grain solid wood slices and longitudinal wood grain solid wood slices, and between adjacent longitudinal wood grain solid wood slices and longitudinal wood grain solid wood slices, and the fireproof adhesive layer penetrates into the contact surface of the melamine impregnated paper layer, the transverse wood grain solid wood slices or the longitudinal wood grain solid wood slices; in the anti-cracking reinforced multi-layer composite board, the melamine impregnated paper layer, the transverse wood grain solid wood slices, the repeated superimposed layers of solid wood slices, the alternating superimposed layers of solid wood slices, the repeated superimposed layers of solid wood slices, the transverse wood grain solid wood slices and the melamine impregnated paper layer are bonded and compounded into one from bottom to top through the fireproof adhesive layer.

[0007] Preferably, the alternating stacked layers of solid wood sheets have 2 to 4 solid wood sheets with transverse wood grains and 1 to 3 solid wood sheets with longitudinal wood grains.

[0008] Preferably, the transverse wood grain solid wood chips and the longitudinal wood grain solid wood chips are wood turning chips respectively.

[0009] Preferably, the melamine impregnated paper layer is composed of a composite of phenolic resin glue impregnated bottom paper, melamine impregnated covering paper, melamine impregnated decorative paper and melamine impregnated surface paper from the inside to the outside.

[0010] Preferably, the overall thickness of the anti-cracking reinforced multi-layer composite board is 18 mm to 26 mm, the thickness of the transverse wood grain solid wood slices and the longitudinal wood grain solid wood slices are respectively 1.9 mm to 2.1 mm, and the thickness of the melamine impregnated paper layer is 0.4 to 0.6 mm.

[0011] The beneficial effects of the utility model are as follows: firstly, since the bottom layer and the top layer of the utility model are both melamine impregnated paper layers, the surface thereof is not easy to crack, is wear-resistant, has good strength and stability, does not contain formaldehyde, and is environmentally friendly; secondly, the middle part of the utility model is an alternating superposition layer of solid wood slices, and the alternating superposition layer of solid wood slices is composed of a plurality of transverse wood grain solid wood slices and a plurality of longitudinal wood grain solid wood slices alternately superimposed, which can ensure that the bearing strength of the middle part of the composite board in the transverse and longitudinal directions is uniform; the utility model connects the repeated superposition layers of solid wood slices on both sides of the alternating superposition layer of solid wood slices, and the transverse wood grain solid wood slices are connected to the repeated superposition layers of solid wood slices, wherein the repeated superposition layer of solid wood slices is composed of two layers of longitudinal wood grain solid wood slices repeatedly superimposed, so that the utility model specifically improves the bearing strength in the longitudinal direction, and is not prone to the problem of bending and deformation in the longitudinal direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the hierarchical structure of the first embodiment.

[0013] Figure 2 This is a schematic diagram of the hierarchical structure of Example 2.

[0014] In the figure: 1. Melamine impregnated paper layer; 2. Solid wood slices with horizontal wood grain; 3. Solid wood slices with vertical wood grain; 100. Repeatedly stacked layers of solid wood slices; 200. Alternately stacked layers of solid wood slices. DETAILED DESCRIPTION

[0015] The structural principle and working principle of the utility model are further described in detail below with reference to the accompanying drawings. Embodiment 1

[0016] like Figure 1 As shown, this embodiment is an anti-cracking reinforced multi-layer composite board, which is composed of a melamine impregnated paper layer 1, a transverse wood grain solid wood sheet 2, a solid wood sheet repeated superposition layer 100, a solid wood sheet alternating superposition layer 200, a solid wood sheet repeated superposition layer 100, a transverse wood grain solid wood sheet 2 and a melamine impregnated paper layer 1 from bottom to top; the solid wood sheet repeated superposition layer 100 is composed of two layers of longitudinal wood grain solid wood sheets 3 repeatedly superimposed; the solid wood sheet alternating superposition layer 200 is composed of two layers of transverse wood grain solid wood sheets 2 and one layer of longitudinal wood grain solid wood sheets 3 alternately superimposed, and the bottom layer and the top layer of the solid wood sheet alternating superposition layer 200 are respectively transverse wood grain solid wood sheets 2, that is, the solid wood sheet alternating superposition layer 200 is, from bottom to top, transverse wood grain solid wood sheets 2, longitudinal wood grain solid wood sheets 3 and transverse wood grain solid wood sheets 2. It should be noted that the longitudinal wood grain solid wood slice 3 and the transverse wood grain solid wood slice 2 of the utility model are both wood turning wood slices, the longitudinal wood grain solid wood slice 3 refers to the solid wood slice with the wood grain extending in the longitudinal direction, and the transverse wood grain solid wood slice 2 refers to the solid wood slice with the wood grain extending in the transverse direction. Since the bottom layer and the top layer of the utility model are both melamine impregnated paper layers 1, the surface is not easy to crack, wear-resistant, has good strength and stability, does not contain formaldehyde, and has good environmental protection; the middle part of the utility model is the alternating stacking layer 200 of solid wood slices, which can ensure that the middle part of the composite board has uniform bearing strength in the transverse and longitudinal directions; the utility model connects the solid wood slice repeating stacking layer 100 on both sides of the alternating stacking layer 200 of solid wood slices, and connects the transverse wood grain solid wood slice 2 outside the repeating stacking layer 100 of solid wood slices, wherein the repeating stacking layer 100 of solid wood slices is composed of two layers of longitudinal wood grain solid wood slices 3 repeatedly stacked, so that the utility model specifically improves the bearing strength in the longitudinal direction, and is not prone to bending and deformation problems in the longitudinal direction.

[0017] like Figure 1As shown, a fireproof adhesive layer (not shown) is coated between adjacent melamine impregnated paper layers 1 and transverse wood grain solid wood slices 2, between adjacent transverse wood grain solid wood slices 2 and longitudinal wood grain solid wood slices 3, and between adjacent longitudinal wood grain solid wood slices 3 and longitudinal wood grain solid wood slices 3, and the fireproof adhesive layer penetrates into the contact surface of the melamine impregnated paper layer 1, the transverse wood grain solid wood slices 2 or the longitudinal wood grain solid wood slices 3; in the anti-cracking reinforced multi-layer composite board, the melamine impregnated paper layer 1, the transverse wood grain solid wood slices 2, the repeated superimposed layers 100 of the solid wood slices, the alternating superimposed layers 200 of the solid wood slices, the repeated superimposed layers 100 of the solid wood slices, the transverse wood grain solid wood slices 2 and the melamine impregnated paper layer 1 are bonded and compounded into one from bottom to top through the fireproof adhesive layer. For the type of fireproof glue, please refer to another invention patent ZL201910130885.X of the applicant. It is not easy to fall off during bonding, has good high temperature resistance, good wettability, good uniformity and high safety.

[0018] As a preferred mode of the melamine impregnated paper layer 1, the melamine impregnated paper layer 1 is composed of phenolic resin glue impregnated bottom paper, melamine impregnated covering paper, melamine impregnated decorative paper, and melamine impregnated surface paper from the inside to the outside. The phenolic resin glue impregnated bottom paper can play a role in the mechanical properties of the wood grain solid wood slices, and is the base material of the melamine impregnated paper layer 1; the melamine impregnated covering paper has excellent covering power and can cover the color spots on the surface of the phenolic resin glue impregnated bottom paper; the melamine impregnated decorative paper is a wood grain decorative paper, which mainly plays a decorative role and has good covering power, impregnation and printing properties; the melamine impregnated surface paper is placed on the top layer of the decorative board, which plays a role in protecting the decorative paper, making the board surface after heating and pressurization highly transparent, and the board surface is hard and wear-resistant. This kind of paper requires good water absorption performance, white and clean, and transparent after impregnation.

[0019] As a preferred form of anti-cracking reinforced multi-layer composite board, the overall thickness of the anti-cracking reinforced multi-layer composite board is 18mm~26mm, the thickness of the transverse wood grain solid wood sheet 2 and the longitudinal wood grain solid wood sheet 3 are respectively 1.9mm~2.1mm, preferably 2mm, and the thickness of the melamine impregnated paper layer 1 is 0.4~0.6mm, preferably 0.5mm. Embodiment 2

[0020] like Figure 2As shown, this embodiment is an anti-cracking reinforced multi-layer composite board, which is composed of a melamine impregnated paper layer 1, a transverse wood grain solid wood slice 2, a solid wood slice repeated superposition layer 100, a solid wood slice alternate superposition layer 200, a solid wood slice repeated superposition layer 100, a transverse wood grain solid wood slice 2 and a melamine impregnated paper layer 1 from bottom to top; the solid wood slice repeated superposition layer 100 is composed of two layers of longitudinal wood grain solid wood slices 3 repeatedly superimposed; the solid wood slice alternate superposition layer 200 is composed of four layers of transverse wood grain solid wood slices 2 and three layers of longitudinal wood grain solid wood slices 3 alternately superimposed, and the bottom and top layers of the solid wood slice alternate superposition layer 200 are respectively transverse wood grain solid wood slices 2, that is, the solid wood slice alternate superposition layer 200 is, from bottom to top, transverse wood grain solid wood slices 2, longitudinal wood grain solid wood slices 3, transverse wood grain solid wood slices 2, longitudinal wood grain solid wood slices 3, transverse wood grain solid wood slices 2, longitudinal wood grain solid wood slices 3 and transverse wood grain solid wood slices 2. It should be noted that the longitudinal wood grain solid wood slice 3 and the transverse wood grain solid wood slice 2 of the utility model are both wood turning wood slices, the longitudinal wood grain solid wood slice 3 refers to the solid wood slice with the wood grain extending in the longitudinal direction, and the transverse wood grain solid wood slice 2 refers to the solid wood slice with the wood grain extending in the transverse direction. Since the bottom layer and the top layer of the utility model are both melamine impregnated paper layers 1, the surface is not easy to crack, wear-resistant, has good strength and stability, does not contain formaldehyde, and has good environmental protection; the middle part of the utility model is the alternating stacking layer 200 of solid wood slices, which can ensure that the middle part of the composite board has uniform bearing strength in the transverse and longitudinal directions; the utility model connects the solid wood slice repeating stacking layer 100 on both sides of the alternating stacking layer 200 of solid wood slices, and connects the transverse wood grain solid wood slice 2 outside the repeating stacking layer 100 of solid wood slices, wherein the repeating stacking layer 100 of solid wood slices is composed of two layers of longitudinal wood grain solid wood slices 3 repeatedly stacked, so that the utility model specifically improves the bearing strength in the longitudinal direction, and is not prone to bending and deformation problems in the longitudinal direction.

[0021] like Figure 1 As shown, a fireproof adhesive layer (not shown) is coated between adjacent melamine impregnated paper layers 1 and transverse wood grain solid wood slices 2, between adjacent transverse wood grain solid wood slices 2 and longitudinal wood grain solid wood slices 3, and between adjacent longitudinal wood grain solid wood slices 3 and longitudinal wood grain solid wood slices 3, and the fireproof adhesive layer penetrates into the contact surface of the melamine impregnated paper layer 1, the transverse wood grain solid wood slices 2 or the longitudinal wood grain solid wood slices 3; the melamine impregnated paper layer 1, the transverse wood grain solid wood slices 2, the repeated superimposed layers 100 of the solid wood slices, the alternating superimposed layers 200 of the solid wood slices, the repeated superimposed layers 100 of the solid wood slices, the transverse wood grain solid wood slices 2 and the melamine impregnated paper layer 1 of the anti-cracking reinforced multi-layer composite board are respectively bonded and compounded into one from bottom to top through the fireproof adhesive layer. For the type of fireproof glue, please refer to another invention patent ZL201910130885.X of the applicant. It is not easy to fall off during bonding, has good high temperature resistance, good wettability, good uniformity and high safety.

[0022] As a preferred mode of the melamine impregnated paper layer 1, the melamine impregnated paper layer 1 is composed of phenolic resin glue impregnated bottom paper, melamine impregnated covering paper, melamine impregnated decorative paper, and melamine impregnated surface paper from the inside to the outside. The phenolic resin glue impregnated bottom paper can play a role in the mechanical properties of the wood grain solid wood slices, and is the base material of the melamine impregnated paper layer 1; the melamine impregnated covering paper has excellent covering power and can cover the color spots on the surface of the phenolic resin glue impregnated bottom paper; the melamine impregnated decorative paper is a wood grain decorative paper, which mainly plays a decorative role and has good covering power, impregnation and printing properties; the melamine impregnated surface paper is placed on the top layer of the decorative board, which plays a role in protecting the decorative paper, making the board surface after heating and pressurization highly transparent, and the board surface is hard and wear-resistant. This kind of paper requires good water absorption performance, white and clean, and transparent after impregnation.

[0023] As a preferred form of anti-cracking reinforced multi-layer composite board, the overall thickness of the anti-cracking reinforced multi-layer composite board is 18mm~26mm, the thickness of the transverse wood grain solid wood sheet 2 and the longitudinal wood grain solid wood sheet 3 are respectively 1.9mm~2.1mm, preferably 2mm, and the thickness of the melamine impregnated paper layer 1 is 0.4~0.6mm, preferably 0.5mm.

[0024] The above is only a preferred embodiment of the present invention. Any slight modification, equivalent changes and modifications made to the above embodiments according to the technical solution of the present invention are within the scope of the technical solution of the present invention.

Claims

1. A crack-resistant reinforced multi-layer composite panel, characterized in that: From bottom to top, it is composed of a melamine impregnated paper layer, a horizontal wood grain solid wood slice, a repeated superposition layer of solid wood slices, an alternating superposition layer of solid wood slices, a repeated superposition layer of solid wood slices, a horizontal wood grain solid wood slice and a melamine impregnated paper layer; the repeated superposition layer of solid wood slices is composed of two repeated superposition layers of vertical wood grain solid wood slices; the alternating superposition layer of solid wood slices is composed of a plurality of horizontal wood grain solid wood slices and a plurality of vertical wood grain solid wood slices alternately superimposed, and the bottommost layer and the topmost layer of the alternating superposition layer of solid wood slices are horizontal wood grain solid wood slices respectively.

2. The anti-cracking reinforced multi-layer composite panel according to claim 1, characterized in that: A fireproof adhesive layer is coated between adjacent melamine impregnated paper layers and transverse wood grain solid wood slices, between adjacent transverse wood grain solid wood slices and longitudinal wood grain solid wood slices, and between adjacent longitudinal wood grain solid wood slices and longitudinal wood grain solid wood slices, and the fireproof adhesive layer penetrates into the contact surface of the melamine impregnated paper layer, the transverse wood grain solid wood slices or the longitudinal wood grain solid wood slices; in the anti-cracking reinforced multi-layer composite board, the melamine impregnated paper layer, the transverse wood grain solid wood slices, the repeated superimposed layers of solid wood slices, the alternating superimposed layers of solid wood slices, the repeated superimposed layers of solid wood slices, the transverse wood grain solid wood slices and the melamine impregnated paper layer are bonded and compounded into one from bottom to top through the fireproof adhesive layer.

3. The anti-cracking reinforced multi-layer composite panel according to claim 1, characterized in that: The alternately stacked layers of solid wood slices include 2 to 4 solid wood slices with transverse wood grains and 1 to 3 solid wood slices with longitudinal wood grains.

4. The anti-cracking reinforced multi-layer composite panel according to claim 1, characterized in that: The transverse wood grain solid wood slices and the longitudinal wood grain solid wood slices are wood turning slices respectively.

5. The anti-cracking reinforced multi-layer composite panel according to claim 1, characterized in that: The melamine impregnated paper layer is composed of a composite of phenolic resin glue impregnated bottom paper, melamine impregnated covering paper, melamine impregnated decorative paper and melamine impregnated surface paper from the inside to the outside.

6. The anti-cracking reinforced multi-layer composite panel according to any one of claims 1 to 5, characterized in that: The overall thickness of the anti-cracking reinforced multi-layer composite board is 18 mm to 26 mm, the thickness of the transverse wood grain solid wood slices and the longitudinal wood grain solid wood slices are 1.9 mm to 2.1 mm respectively, and the thickness of the melamine impregnated paper layer is 0.4 mm to 0.6 mm.

7. The anti-cracking reinforced multi-layer composite panel according to claim 6, characterized in that: The thickness of the transverse wood grain solid wood slice and the longitudinal wood grain solid wood slice is 2 mm respectively, and the thickness of the melamine impregnated paper layer is 0.5 mm.

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