CN218928093U

CN218928093U - Bamboo plywood

Info

Publication number: CN218928093U
Application number: CN202220239456.3U
Authority: CN
Inventors: 杨启庆
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-01-28
Filing date: 2022-01-28
Publication date: 2023-04-28
Anticipated expiration: 2032-01-28

Abstract

The utility model discloses a bamboo plywood, which is formed by gluing a surface layer, a core layer and a bottom layer through glue, wherein the core layer comprises a plurality of bamboo curtain layers with the same direction and bamboo curtain layers with the same direction, the number of layers of the bamboo curtain layers with the same direction is greater than three, the number of layers of the bamboo curtain layers with the same direction is greater than two, the bamboo curtain layers with the same direction and the bamboo curtain layers with the same direction are sequentially stacked at intervals and directly glued through the glue, the bamboo curtain layers with the same direction are formed by stacking and gluing a plurality of bamboo curtains with the same direction, and each bamboo curtain layer with the same direction comprises at least two bamboo curtains; the transverse bamboo curtain layers are formed by gluing a plurality of bamboo curtains in the same direction, and each layer of transverse bamboo curtain layer comprises at least two bamboo curtains. The technology mainly solves the problem of poor comprehensive strength or high cost of the bamboo plywood, adopts the bamboo curtains to vertically and horizontally arrange, at least two parts of transverse lines to arrange and at least two layers of parallel lines and transverse lines to form the same-direction bamboo curtains, and ensures the comprehensive strength of the plywood under lower production cost.

Description

Bamboo plywood

Technical Field

The utility model relates to the technical field of plate processing, in particular to a bamboo plywood.

Background

At present, in the production of the bamboo plywood, in order to improve the bonding strength, the wood veneers and the bamboo curtains are assembled in a staggered mode, and the wood veneers are used as adhesive layers, so that the bonding strength is improved, but the method has high cost; under the condition that the requirement on the bonding strength of part is not high, the bamboo curtain and the bamboo curtain are bonded in a crossed and vertical mode, namely the bamboo curtain with the smooth grain (namely the length direction of the bamboo curtain is consistent with the length direction of the plywood) and the bamboo curtain with the transverse grain (namely the length direction of the bamboo curtain is perpendicular to the length direction of the plywood) are bonded in a crossed and vertical mode, and one bamboo curtain exists in the bamboo curtain part. Because of the gaps among the single bamboo chips of the bamboo curtain, the gluing area is smaller, and the gluing strength is lower, so that the overall strength of the bamboo plywood is affected.

In the utility model, the bamboo curtains with the straight lines and the bamboo curtains with the transverse lines are vertically and horizontally arranged, the bamboo curtains with the transverse lines are at least two layers (the vertical intersection positions of the bamboo curtains with the straight lines and the bamboo curtains with the transverse lines), each layer of the bamboo curtains with the transverse lines is at least formed by two bamboo curtains, and the bamboo curtains with the straight lines are also at least formed by two bamboo curtains. The bamboo curtain with the grain and the bamboo curtain with the grain are respectively composed of at least two bamboo curtains, so that the bonding strength of the bamboo curtain with the grain and the bamboo curtain with the grain is increased, the bonding strength of the bonding part of the bamboo curtain with the grain and the bamboo curtain with the grain is also increased, and the use requirements of people in production and life are met under the lower production cost.

Disclosure of Invention

The utility model aims to solve the defects of high cost and insufficient strength in the prior art, and provides a high-strength low-cost bamboo plywood.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the bamboo plywood is formed by gluing a surface layer, a core layer and a bottom layer through glue, wherein the core layer comprises a plurality of bamboo curtain layers with the same direction and bamboo curtain layers with the same direction, the number of layers of the bamboo curtain layers with the same direction is greater than three, the number of layers of the bamboo curtain layers with the same direction is greater than two, the bamboo curtain layers with the same direction and the bamboo curtain layers with the same direction are stacked at intervals in sequence and are directly glued through the glue, the bamboo curtain layers with the same direction are stacked and glued through the glue, and each bamboo curtain layer with the same direction comprises at least two bamboo curtains; the transverse bamboo curtain layers are formed by gluing a plurality of bamboo curtains in the same direction, and each layer of transverse bamboo curtain layer comprises at least two bamboo curtains.

Preferably, the bamboo curtain is formed by braiding bamboo strips through braiding wires or is formed by rolling bamboo chips and sewing fluffed bamboo bundles through braiding wires.

Preferably, the surface layer and the bottom layer are formed by one or more of wood veneers, impregnated kraft paper, fiberglass, plastics, and the like.

Preferably, the glue is urea-formaldehyde glue or phenolic glue.

Preferably, the thickness of the bamboo plywood is greater than 26mm.

Compared with the prior art, the utility model has the beneficial effects that:

the technology mainly solves the problems of poor comprehensive strength or high cost of the bamboo plywood, and the bamboo curtains are distributed vertically and horizontally to solve the overall strength of the bamboo plywood; at least two parts of transverse lines are arranged, so that the transverse strength of the plywood is ensured. The intersection of the following bamboo curtain and the transverse bamboo curtain is formed by at least two bamboo curtains, so that gaps of vertical bonding surfaces among the following bamboo curtains, among the transverse bamboo curtains and between the following bamboo curtains and the transverse bamboo curtains can be effectively reduced, bonding area is increased, bonding strength is improved, and therefore the comprehensive strength of the bamboo plywood is improved under lower production cost, higher strength requirements are met, and the use requirements of people in production and life are met.

Drawings

Fig. 1 is a schematic structural view of a bamboo plywood according to the present utility model;

fig. 2 is a schematic structural view of a bamboo plywood made up of four layers of bamboo curtains with smooth lines and three layers of bamboo curtains with transverse lines according to the present utility model;

FIG. 3 is a schematic view of a bamboo curtain;

FIG. 4 is a schematic cross-sectional view of a bamboo plywood composed of three layers of smooth bamboo curtains and two layers of transverse bamboo curtains;

fig. 5 is a schematic structural view of a bamboo plywood made of three bamboo curtains with smooth lines and two bamboo curtains with transverse lines according to the present utility model;

fig. 6 is a schematic cross-sectional structure of a bamboo plywood composed of four layers of smooth bamboo curtains and three layers of transverse bamboo curtains.

In the figure: the bamboo curtain comprises a surface layer 1, a core layer 2, a bottom layer 3, glue 4, a bamboo curtain 5, impregnated paper 1-1, a smooth bamboo curtain layer 2-1, a horizontal bamboo curtain layer 2-2, a wood veneer 3-1, glass fiber 3-2, bamboo strips 5-1 and braided wires 5-2.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Example 1

The production of the bamboo plywood is carried out, and the bamboo plywood is assembled, namely a bottom layer 3, a core layer 2 and a surface layer 1 in sequence from bottom to top in the figure 1;

as shown in fig. 4, the core layer 2 is composed of two transverse bamboo curtain layers 2-2 and three parallel bamboo curtain layers 2-1, each parallel bamboo curtain layer 2-1 comprises two parallel bamboo curtains 5 in the same direction, each transverse bamboo curtain layer 2-2 comprises two transverse bamboo curtains 5 in the same direction, and the structure of the bamboo curtains 5 is as shown in fig. 3;

the surface layer 1 is formed by impregnated paper 1-1, and the bottom layer 3 is formed by wood veneers 3-1;

firstly drying all the bamboo curtains 5 and the wood veneers 3-1, wherein the water content is lower than 10%;

all bamboo curtains 5 are immersed by glue 4, the glue 4 is phenolic glue with the solid content lower than 50%, and then the bamboo curtains are dried to ensure that the water content is lower than 20%;

heating to 100 deg.f. C or more, pressing and molding, as shown in FIG. 5.

Example two

as shown in fig. 6, the core layer 2 is composed of three horizontal bamboo curtain layers 2-2 and four vertical bamboo curtain layers 2-1, each vertical bamboo curtain layer 2-1 comprises three bamboo curtains 5 in the same direction, each horizontal bamboo curtain layer 2-2 comprises two bamboo curtains 5 in the same direction, and the structure of the bamboo curtains 5 is as shown in fig. 3;

the surface layer 1 is composed of plastic 1-2, and the bottom layer 3 is composed of glass fiber 3-2;

drying all the bamboo curtains 5, wherein the water content is lower than 10%;

heating to 100 deg.f. C or more, and pressing to form the material, as shown in figure 2.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The bamboo plywood is characterized by being formed by gluing a surface layer, a core layer and a bottom layer through glue, wherein the core layer comprises a plurality of bamboo curtain layers with the same direction and bamboo curtain layers with the same direction, the number of layers of the bamboo curtain layers with the same direction is greater than three, the number of layers of the bamboo curtain layers with the same direction is greater than two, the bamboo curtain layers with the same direction and the bamboo curtain layers with the same direction are stacked at intervals in sequence and are directly glued through the glue, the bamboo curtain layers with the same direction are formed by stacking and gluing a plurality of bamboo curtains with the same direction, and each bamboo curtain layer with the same direction comprises at least two bamboo curtains; the transverse bamboo curtain layers are formed by gluing a plurality of bamboo curtains in the same direction, and each layer of transverse bamboo curtain layer comprises at least two bamboo curtains.

2. A bamboo plywood according to claim 1, characterized in that the bamboo curtain is one of woven with bamboo strips by means of braiding wires or rolled up, fluffed bundles sewn with braiding wires.

3. A bamboo plywood according to claim 1, characterized in that the surface and bottom layers consist of one of wood veneer, impregnated kraft paper, glass fibre, plastic or the like.

4. A bamboo plywood as claimed in claim 1, wherein the glue is one of urea-formaldehyde glue or phenolic glue.

5. A bamboo plywood according to claim 1, characterized in that the thickness of the bamboo plywood is greater than 26mm.