CN203818656U - High-strength and high-impact-resistance composite paperboard - Google Patents

Abstract

A high-strength and high-impact composite paperboard comprises a honeycomb paperboard surface layer and a honeycomb paperboard bottom layer, and a double-layer corrugated paperboard is sandwiched between the two layers of honeycomb paperboard. The honeycomb paperboard has a diamond-shaped or regular hexagonal honeycomb paper core, and the upper and lower layers of the honeycomb paper core are aligned. The double-layer corrugated cardboard is the same, both are U and V-shaped corrugated corrugated, and the corrugated corrugations of the two layers are interlaced, that is, the peaks of the upper layer correspond to the troughs of the lower layer. Honeycomb paperboard has the same support structure layer as corrugated board. The supporting structure is: there are "L"-shaped wooden support blocks at the four corners, and four rubber strips are clipped into the wooden support blocks to form a rectangle. There are rubber pads in the rectangle, the pads are regular quadrilaterals, the side length is 2-3cm, the pads are arranged in a matrix, and the distance between adjacent two pads is 4-8cm. The thickness of the supporting structure layer is 1-2 cm. The utility model has high strength, good cushioning performance, simple structure and convenient preparation, and can be used in the field of industrial load bearing.

Description

A kind of high-strength and high-impact composite paperboard

technical field

The utility model relates to a food packaging board, in particular to a composite cardboard with high strength and high impact resistance.

Background technique

With people's emphasis on environmental protection, the proportion of environmentally friendly materials used in daily life is increasing day by day. Among them, corrugated cardboard is widely used in the packaging field because of its better strength. The corrugated cardboard used to make packaging boxes is mainly composed of corrugated paper, face paper and inner paper. Corrugated paper is generally provided with 2 or 3 layers, separated by core paper in the middle, and formed by gluing and forming what is called a 5-layer or 7-layer board , The existence of corrugation in the cardboard provides excellent strength for the cardboard, but its cushioning is obviously poor, and it is easily damaged in the impact, which has become the biggest problem in the use of corrugated cardboard. The newly developed honeycomb paperboard has a honeycomb-shaped paper core, which can effectively disperse energy. However, the compressive strength of honeycomb paperboard is low, and the cost is high. To really make cardboard with both excellent impact resistance and excellent compression resistance, it is necessary to combine or combine other materials in a specific way, such as adding wood structure, adding rubber structure, etc.

Utility model content

The technical problem to be solved by the utility model is to overcome the above-mentioned defects in the prior art and provide a composite cardboard with high strength and high impact resistance.

The technical scheme that the utility model solves its technical problem adopts is:

A high-strength and high-impact composite cardboard includes a honeycomb cardboard surface layer and a honeycomb cardboard bottom layer, and two layers of corrugated cardboard are sandwiched between the two layers of honeycomb cardboard. There is the same supporting structure layer between the surface layer of the honeycomb cardboard and the upper layer of corrugated cardboard, and the bottom layer of the honeycomb cardboard and the lower layer of corrugated cardboard.

Further, the paper cores of the surface layer of the honeycomb paperboard and the bottom layer of the honeycomb paperboard have the same cross-sectional shape, which is a rhombus or a regular hexagon.

Further, the corrugations of the upper and lower layers of corrugated cardboard are the same, both U and V-shaped corrugated corrugations, and the corrugated corrugations of the two layers are interlaced, that is, the peaks of the upper layer correspond to the troughs of the lower layer.

Further, the structural feature of the support structure layer is: there are "L"-shaped wooden support blocks at the four corners of the cardboard, and four rubber strips are inserted into the wooden support blocks to form a closed rectangle around the edge of the cardboard. There are regular quadrilateral rubber pads in the rectangle, the side length is 2-3cm, the rubber pads are arranged in a matrix, and the distance between two adjacent rubber pads is 4-8cm. The thickness of the support structure layer is 1-2 cm.

Further, the width of the rubber strip formed into a closed rectangle around the edge of the cardboard is 2-3 cm.

Further, both the rubber strip and the rubber cushion block use soft rubber, that is, rubber with a small amount of sulfur added, and the amount of sulfur added per hundred parts of rubber is 10-15 parts. Optimally, butyl rubber and nitrile rubber can be selected.

Description of drawings

Fig. 1 is a schematic cross-sectional view of a composite cardboard according to an embodiment of the present invention.

Fig. 2 is a top view of the supporting structure layer 3 according to an embodiment of the present invention.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

Referring to Fig. 1, a high-strength and high-impact composite cardboard includes a honeycomb cardboard surface layer 1 and a honeycomb cardboard bottom layer 6, with upper and lower layers of corrugated cardboard 3, 4 sandwiched between the two layers of honeycomb cardboard. There are the same support structure layers 2, 5 between the surface layer of the honeycomb cardboard and the upper layer of corrugated cardboard, and the bottom layer of the honeycomb cardboard and the lower layer of corrugated cardboard.

The paper cores of the honeycomb paperboard surface layer 1 and the honeycomb paperboard bottom layer 6 have the same cross-sectional shape, which is rhombus or regular hexagon.

The corrugation of the upper layer of corrugated cardboard 3 and the lower layer of corrugated cardboard 4 are the same, both of which are U-shaped corrugated corrugations, and the corrugations of the two layers are interlaced, that is, the peaks of the upper layer of corrugated cardboard 3 correspond to the troughs of the lower layer of corrugated cardboard 4 .

Referring to Figure 2, the structural features of the supporting structure layer are: there are "L"-shaped wooden support blocks a at the four corners of the cardboard, and four rubber strips b are inserted into the wooden support blocks to form a closed rectangle around the edge of the cardboard. There is a regular quadrilateral rubber pad c in the rectangle, with a side length of 2.5 cm. The rubber pads c are arranged in a matrix, and the distance between two adjacent rubber pads is 6 cm. The thickness of the support structure layer is 1.5 cm.

The width of the rubber strip b enclosed into a closed rectangle at the edge of the cardboard is 2.5 cm.

Both the rubber strip b and the rubber block c use soft butyl rubber.

A preferred embodiment of the present utility model has been introduced in detail above. The specific embodiments are only used to help understand the core idea of the present utility model. It should be pointed out that for those skilled in the art, without departing from the principle of the utility model, some improvements and modifications can be made to the utility model, and these improvements and modifications also belong to the protection scope of the claims of the utility model.

Claims (4)

1. A high-strength and high-impact composite cardboard, comprising a honeycomb cardboard surface layer and a honeycomb cardboard bottom layer, two layers of honeycomb cardboard are sandwiched between upper and lower layers of corrugated cardboard, between the honeycomb cardboard surface layer and the upper layer of corrugated cardboard, the honeycomb cardboard bottom layer and the lower layer of corrugated cardboard have the same supporting structure layer. 2. The high-strength and high-impact composite paperboard according to claim 1, characterized in that: the surface layer of the honeycomb paperboard and the paper core of the bottom layer of the honeycomb paperboard have the same cross-sectional shape, which is rhombus or regular hexagon. 3. The high-strength and high-impact composite cardboard according to claim 1, characterized in that: the corrugations of the upper and lower layers of corrugated cardboard are the same, both are U and V-shaped corrugated corrugations, and the corrugations of the two layers of corrugations are interlaced, that is, the upper layer has the same wave crest. Corresponding to the lower trough. 4. The high-strength and high-impact composite cardboard according to claim 1, characterized in that: the structural features of the support structure layer are: there are "L"-shaped wooden support blocks at the four corners of the cardboard, and four rubber strips are stuck in The wooden support block is formed into a closed rectangle around the edge of the cardboard, and there is a regular quadrilateral rubber pad in the rectangle, with a side length of 2-3cm. The rubber pads are arranged in a matrix, and the distance between two adjacent rubber pads is 4-8cm. The thickness of the support structure layer is 1-2 cm.