CN103419253A - Composite floor for container soleplate - Google Patents

Abstract

A composite floor for a container floor, which is formed by gluing a surface layer, an upper center layer, a middle layer, a lower center layer, and a bottom layer arranged from top to bottom, and the surface layer and the bottom layer are respectively plywood with a thickness greater than 2 mm , the middle layer is plywood with a thickness greater than 7.5 mm, and the upper and lower central layers are particleboard or/and fiberboard with a thickness not greater than 8.3 mm. The composite floor for the container floor of the present invention has reasonable structure, simple process, abundant materials and high strength because the plywood is placed within a certain thickness range in the middle part, and meets the requirements for use of the container floor.

Description

Composite flooring for container floors

technical field

The patent of the present invention relates to a composite floor, in particular to a composite floor used for the bottom plate of a container.

Background technique

The container floor is one of the three main components of the container, and is mainly used to carry goods, so it has high requirements for its strength. In the past, Southeast Asian tropical hardwoods were mostly used for production, but with the depletion of resources and the pressure of environmental protection, more and more materials, such as bamboo, particleboard, fiberboard, etc., will be used in the production of container floors. The rate is low, resulting in high floor production costs and unstable performance. Particleboard and fiberboard will be ideal materials for container floors due to their rich production materials, high production efficiency and low cost. In the current research, particleboard and fiberboard are placed in the middle, and particleboard and fiberboard are placed on both sides. ~3-layer veneer structure, but due to the performance defects of particleboard and fiberboard, it is difficult to really meet the requirements of the container.

According to the theory of multi-layer composite structure, the middle part of the container floor mainly bears shear stress during use. According to the use requirements of the container floor, the maximum shear strength of the center point needs to be greater than 3.4MPA. If particleboard, fiberboard, etc. are placed inside, the floor strength will drop significantly, which cannot meet the requirements of the container floor. Only when plywood is placed within a certain thickness range in the middle part, the floor strength can meet the requirements of the container.

Contents of the invention

The problem to be solved by the patent of the present invention is to provide a composite floor that meets the requirements of container floor with simple production process and stable performance, aiming at the problem of low strength of chipboard and fiberboard used in container floor.

The technical solution adopted in the present invention is: a composite floor for container bottom plates, which is formed by gluing a surface layer, an upper center layer, an intermediate layer, a lower center layer, and a bottom layer arranged from top to bottom, wherein the surface layer and the bottom layer are plywood with a thickness greater than 2 mm, the middle layer is plywood with a thickness greater than 7.5 mm, and the upper central layer and the lower central layer are particleboard or/and fiberboard with a thickness not greater than 8.3 mm.

The composite floor for the bottom plate of the container, wherein, the surface layer, the middle layer, and the bottom layer are respectively one of wood plywood, bamboo plywood, and bamboo-wood composite plywood.

The composite floor for the bottom plate of the container, wherein, the upper central layer and the lower central layer are respectively one of particleboard and fiberboard.

In the composite floor for the container bottom, the particle board is an oriented strand board.

The composite floor for the container floor, wherein the fiberboard is a medium density fiberboard or a high density fiberboard.

The composite floor for the bottom plate of the container, wherein, the outer surface of the surface layer is also provided with a coating layer, and the coating layer is one of non-woven fabric, glass fiber cloth, and kraft paper impregnated with melamine-modified urea-formaldehyde glue. ; The thickness of the coating layer is 0.3mm.

Compared with the prior art, the composite floor for the container floor of the present invention has the following advantages: the composite floor for the container floor of the present invention has a reasonable structure, simple process, abundant materials, and high strength because the plywood is placed within a certain thickness range in the middle part. High, to meet the requirements of the container floor.

Description of drawings

The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

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

Fig. 2 is a structural schematic diagram of the second embodiment of the composite floor for the container floor of the present invention.

Fig. 3 is a structural schematic diagram of a third embodiment of the composite floor for the container floor of the present invention.

Fig. 4 is a structural schematic diagram of a fourth embodiment of a composite floor for a container floor according to the present invention.

Detailed ways

Example 1: As shown in Figure 1, a composite floor for a container floor is formed by gluing the surface layer 1, the upper center layer 2, the middle layer 3, the lower center layer 4, and the bottom layer 5 from top to bottom. . Wherein, the surface layer 1 and the bottom layer 5 are wood plywood with a thickness of 2.5 mm, the middle layer 3 is a bamboo plywood with a thickness of 10 mm, and the upper middle layer 2 and the lower middle layer 4 are particle boards with a thickness of 6.5 mm.

Embodiment 2: As shown in Figure 2, a composite floor for a container floor is formed by gluing the surface layer 1, the upper center layer 2, the middle layer 3, the lower center layer 4, and the bottom layer 5 blanks arranged from top to bottom . Among them, the surface layer 1 is a bamboo plywood with a thickness of 2.2 mm, the bottom layer 5 is a wooden plywood with a thickness of 2.2 mm, the middle layer is a wooden plywood with a thickness of 9.6 mm, the upper middle layer 2 is a fiberboard with a thickness of 7 mm, and the lower middle layer 4 is thick. 7 mm oriented strand board.

Embodiment 3: As shown in Figure 3, a composite floor for a container floor is formed by gluing the surface layer 1, the upper center layer 2, the middle layer 3, the lower center layer 4, and the bottom layer 5 blanks arranged from top to bottom . Wherein, the surface layer 1 and the bottom layer 5 are wooden plywood with a thickness of 2.8 mm, the middle layer is a bamboo plywood with a thickness of 7.8 mm, and the upper middle layer 2 and the lower middle layer 4 are 7.3 mm fiberboard.

Embodiment 4: As shown in Figure 4, a composite floor for a container floor is formed by gluing the surface layer 1, the upper center layer 2, the middle layer 3, the lower center layer 4, and the bottom layer 5 from top to bottom. . Among them, the surface layer 1 is wood plywood with a thickness of 2.1 mm, the bottom layer 5 is bamboo plywood with a thickness of 2.1 mm, the middle layer is a wood plywood with a thickness of 8.0 mm, the upper middle layer 2 is oriented strand board with a thickness of 7.9 mm, and the lower middle layer 4 is 7.9 mm thick. mm fibreboard.

In the above embodiment, a coating layer 6 with a thickness of 0.3 mm is compounded on the outer surface of the surface layer 1, and the coating layer is one of non-woven fabric, glass fiber cloth, and kraft paper impregnated with melamine-modified urea-formaldehyde glue. .

The blank assembly method in the above embodiments is obtained through repeated experiments according to the thickness and strength requirements of the container plywood.

Among them, in order to meet the anti-corrosion requirements of the container bottom plate, a preservative that meets the requirements of AQIS is added to the glue.

The manufacturing process of the composite floor for the container floor of the present invention is briefly described as follows: the main manufacturing process mainly includes: making bamboo curtains, making surface coating layers, forming embryos, hot pressing, trimming and sanding, tenoning inspection, inspection and storage, etc. step.

According to the way of composite floor assembly in Example 1 to Example 4, the blank assembly and hot pressing are carried out, and the process parameters are: unit pressure 1.8MPa, time 40 minutes, temperature 140°C.

The process after hot-pressing the group embryos, that is, edge trimming and sanding, tenon inspection, inspection and storage, etc., is consistent with the traditional plywood processing process, and will not be repeated here.

The following is a summary of the experimental detection performance of Examples 1 to 4.

From the above experimental data, it can be seen that the static bending strength of the composite floor for the container floor adopting the structures of Examples 1 to 4 of the present invention is higher than that of the patent No. 201120083556.3. The reason is as mentioned above, the composite floor for the container floor of the present invention, because plywood is placed within a certain thickness range in the middle part, the structure is reasonable, the process is simple, the material is rich, and the strength is high, which meets the requirements of the container floor.

The above content is only a preferred embodiment of the present invention, and is not intended to limit the implementation of the present invention. Those of ordinary skill in the art can easily make corresponding modifications or modifications according to the main concept and spirit of the present invention. Therefore, this The protection scope of the invention shall be determined by the protection scope required by the claims.

Claims (7)

1. A composite floor for a container bottom plate, which is formed by gluing a surface layer arranged from top to bottom, an upper central layer, an intermediate layer, a lower central layer, and a bottom layer. It is characterized in that the surface layer and the bottom layer are respectively For plywood with a thickness greater than 2 mm, the middle layer is plywood with a thickness greater than 7.5 mm, and the upper central layer and the lower central layer are particleboard or/and fiberboard with a thickness not greater than 8.3 mm. 2 . The composite floor for container bottoms according to claim 1 , wherein the surface layer, middle layer, and bottom layer are respectively selected from wood plywood, bamboo plywood, and bamboo-wood composite plywood. 3 . 3 . The composite floor for container bottoms according to claim 1 , characterized in that, the upper central layer and the lower central layer are respectively one of particleboard and fiberboard. 4 . 4. The composite floor for container bottoms according to claim 3, characterized in that, the particle board is an oriented strand board. 5 . The composite floor for the container floor according to claim 3 , wherein the fiberboard is a medium density fiberboard or a high density fiberboard. 6 . 6. The composite floor for container bottoms according to any one of claims 2 to 5, characterized in that, the outer surface of the surface layer is also provided with a film layer, and the film layer is impregnated with melamine modified urea-formaldehyde glue One of non-woven fabric, glass fiber cloth and kraft paper. 7. The composite floor for the bottom plate of the container according to claim 6, characterized in that the thickness of the film coating layer is 0.3 mm.

Images