CN203156875U - Plywood for container soleplate - Google Patents

Abstract

The utility model provides plywood for a container soleplate. The plywood comprises multiple layers of core boards and at least one reinforced fiber layer. The reinforced fiber layers and the core boards are pressed and veneered to form the plywood. Total layers of the core boards and the reinforced fiber layers are 19-24. Wood or bamboo core boards are replaced by the reinforced fiber layers which are high in tensile strength, and the high-strength plywood for the container soleplate is formed. Compared with the traditional plywood for container soleplates, application number of hardwood is reduced, the hardwood can even be replaced totally, and other core boards are made of fast-growing wood or bamboo which is lighter. The plywood has the advantages of rich material source, simple production process, low cost, high strength and the like.

Description

Plywood for container floor

technical field

The utility model relates to the field of plywood, in particular to a plywood for the bottom plate of a container.

Background technique

The plywood for the bottom plate of the container is the main body of the container to carry the weight of the cargo. The container floor plywood commonly used in the prior art is usually formed by gluing multiple layers of wood or bamboo core boards. In order to ensure the load-bearing strength of the plywood used for the bottom plate of the container, it is necessary to use a large amount of hard wood. Usually, the hard wood suitable for the production of plywood for the bottom of the container is mostly hard broad-leaved wood grown in Southeast Asia and other tropical rainforests. Due to the long growth cycle and excessive harvesting of this type of tree species, large areas of tropical rainforests have disappeared worldwide. , resources are increasingly scarce. Therefore, finding alternative wood is a subject that the industry has been exploring and tackling. In the prior art, there was a container floor adopting coconut wood as an alternative material. This product only achieves the purpose of replacing wood, but the strength of its container floor has not been improved.

Utility model content

Aiming at the defects in the prior art, the utility model solves the problems of shortage of production raw materials and low strength of the product in the prior art of the plywood used for the bottom plate of the container.

The plywood for the bottom plate of the container provided by the utility model includes: a multi-layer core board and at least one layer of reinforced fiber layer, the reinforced fiber layer and the core board are pressed and glued to form a plywood, the total layer of the core board and the reinforced fiber layer The number is 19-24 floors.

In some embodiments, the reinforcing fiber layer is arranged on the 2nd to 15th layers of the plywood.

The reinforcing fiber layer is made of carbon fiber, glass fiber, quartz fiber or polyethylene fiber.

In some embodiments, the core board is a wood core board or a bamboo core board.

In some embodiments, the core board includes longitudinal grain board and cross grain board.

In some embodiments, the along-grain boards and cross-grain boards are arranged in a criss-cross manner.

In some embodiments, the first and/or last ply of the plywood is the reinforced fiberboard.

In some embodiments, the material and grain direction of each corresponding veneer of the plywood for the container floor are symmetrically arranged. Thus, the stability of the plywood in terms of mechanical properties is ensured.

In some embodiments, the plywood for the bottom plate of the container includes a veneer layer, and the veneer layer is respectively adhered to the surface of the plywood and the surface of the bottom layer. The veneer layer is a thermosetting impregnated material, such as phenolic glue or melamine glue impregnated material.

In some embodiments, the thickness of the reinforcing fiber layer is 0.2-1.6 mm.

In some embodiments, at least two layers of the reinforcing fiber layer are contiguously arranged between the 1st to 15th layers of the plywood.

Therefore, the beneficial effect of the utility model is that: by using the reinforced fiber layer with high tensile strength to replace the wooden or bamboo core board, a high-strength plywood for the bottom plate of the container is formed. Compared with the plywood used for the traditional container bottom plate, the plywood used for the bottom plate of the container saves the amount of hardwood used, and can even completely replace the hardwood. The remaining core boards are all made of fast-growing wood or bamboo, which is lighter in weight. The criss-cross arrangement is adopted to increase the transverse tension between adjacent surfaces, thereby effectively reducing surface cracking and prolonging the service life. Therefore, the plywood for the bottom plate of the container provided by the utility model has the advantages of rich source of raw materials, simple production process, low cost and high strength.

Description of drawings

Fig. 1 is the structural schematic diagram of the plywood for container floor of the first embodiment of the present invention;

Fig. 2 is a schematic structural view of a plywood for a container floor according to a second embodiment of the present invention;

Fig. 3 is a schematic structural view of a plywood for a container floor according to a third embodiment of the present invention.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail.

In the following embodiments, the longitudinal grain board refers to a veneer that is consistent with the longitudinal direction of the container body, and the transverse grain board refers to a single board whose fingerprint path is consistent with the width direction of the container body.

Example 1

Fig. 1 schematically shows a plywood for a container floor according to a first embodiment of the present invention.

The plywood 10 for the bottom plate of the container has a 22-layer asymmetric structure, including a reinforcing fiber layer 111A and core plates 101-110, 112-122. The core board 105 and the core board 118 are bamboo core boards, and the remaining core boards are wooden core boards. Among them, the core boards 101, 103, 104, 105, 107, 109, 110, 112, 113, 114, 116, 118, 119, 120, 122 are longitudinal grain boards, and the core boards 102, 106, 108, 111, 115, 117,121 are cross-grained plates. The above adjacent board layers are connected by thermocompression gluing.

The reinforcing fiber layer 111A can be one layer, or multiple reinforcing fiber layers 111A can be arranged between the core plates 101-115, or two, three or more layers of reinforcing fiber plates can be connected and arranged between the core plates 101-115.

The reinforcing fiber layer 111A is made of carbon fiber, glass fiber, quartz fiber or polyethylene fiber. Its thickness is 0.2-1.6 mm.

The wooden core board and the bamboo core board are made of fast-growing wood or bamboo.

The plywood 10 for the container floor includes a facing layer (not shown), which is adhered to the surface of the plywood and the surface of the bottom layer, respectively. The facing layer is a thermosetting impregnating material, such as phenolic glue or melamine glue impregnating material.

Example 2

Fig. 2 schematically shows a plywood for a container floor according to a second embodiment of the present invention.

The plywood 20 for the bottom plate of the container has a symmetrical structure of 21 layers, including reinforcing fiber layers 201A, 221A and core plates 202-220. The core boards 202-220 are wood core boards or bamboo core boards. Among them, the core boards 202, 203, 205, 207, 209-213, 215, 217, 219, 220 are longitudinal grain boards, and the core boards 204, 206, 208, 214, 216, 218 are cross grain boards. The above adjacent board layers are connected by thermocompression gluing.

Other aspects of this embodiment are the same as those of Embodiment 1, and will not be repeated here.

Example 3

Fig. 3 schematically shows a plywood for a container floor according to a third embodiment of the present invention.

The plywood 30 for the bottom plate of the container has an asymmetric structure of 21 layers, including reinforcing fiber layers 301A-315A and core plates 316-321. The core boards 316-321 are wood core boards or bamboo core boards. Among them, the core plates 317, 319, 320, 321 are longitudinal grain plates, and the core plates 316, 318 are transverse grain plates. The above adjacent board layers are connected by thermocompression gluing.

Other aspects of this embodiment are the same as those of Embodiment 1, and will not be repeated here.

Example 4

The reinforcing fiber layer can be arranged between the 2nd to 15th layers of the plywood (not shown in the figure) in two or more layers. Other aspects of this embodiment are the same as those of Embodiment 1, and will not be repeated here.

When the utility model is implemented, one or more layers of reinforced fiber layers can be used according to actual needs, and the reinforced fiber layers can be placed in different positions according to the stress during use, as long as the corresponding regulations and strength requirements can be met. .

To sum up, the main body of the plywood for container floor of the present invention is made of fast-growing bamboo or wood material and reinforced fiber layer, which effectively solves the dependence of plywood for container floor on rare hard wood, and greatly saves the cost , has a positive contribution to environmental protection. The strength of the product can also be enhanced by using the reinforcing fiber layer. The plywood for the bottom plate of the container according to the utility model has the characteristics of rich source of raw materials, simple production process, low cost, high strength and the like.

What have been described above are only some embodiments of the present utility model. For those skilled in the art, without departing from the inventive concept of the present utility model, some modifications and improvements can be made, and these all belong to the protection scope of the present utility model.

Claims (11)

1. composite board for bottom board of container is characterized in that, comprising: multilayer central layer and one deck reinforcing fibre layer at least, and the repressed gummed of described reinforcing fibre layer and central layer forms glued board, and total number of plies of described central layer and reinforcing fibre layer is 19～24 layers.

2. composite board for bottom board of container according to claim 1 is characterized in that, described reinforcing fibre layer is made by carbon fiber, glass fibre, quartz fibre or polyethylene fibre, and described reinforcing fibre layer is arranged on the 1st～15 layer of described glued board.

3. composite board for bottom board of container according to claim 2 is characterized in that, described central layer is wooden central layer or bamboo matter central layer, and described central layer comprises longitudinal grin plate and band plate.

4. composite board for bottom board of container according to claim 3 is characterized in that, the ground floor of described glued board and/or last one deck are described reinforcing fibre plate.

5. according to each described composite board for bottom board of container among the claim 1-4, it is characterized in that described rift grain plate and band plate adopt crisscross mode to arrange.

6. composite board for bottom board of container according to claim 5 is characterized in that, material and the ridge orientation of the corresponding veneer of each of described composite board for bottom board of container are symmetry arrangement.

7. composite board for bottom board of container according to claim 6 is characterized in that, described composite board for bottom board of container comprises overlay coating, and described overlay coating sticks to the top layer of glued board and the surface of bottom respectively.

8. composite board for bottom board of container according to claim 7 is characterized in that, described overlay coating is the thermosetting impregnated material.

9. composite board for bottom board of container according to claim 1 is characterized in that, the thickness of described reinforcing fibre layer is 0.2～1.6 millimeter.

10. composite board for bottom board of container according to claim 1 is characterized in that, described reinforcing fibre layer links to each other between the 1st～15 layer that is arranged on described glued board at least 2 layers.

11. composite board for bottom board of container according to claim 7 is characterized in that, described overlay coating is phenolic aldehyde glue or melamine glue water retting material.

Images