Corrugated reinforced paperboard and carton made of corrugated reinforced paperboard

Abstract

The invention belongs to the technical field of packaging articles, and particularly relates to a corrugated reinforced paperboard and a carton made of the corrugated reinforced paperboard. The paperboard comprises surface paper, inner paper and corrugated paper bonded between the surface paper and the inner paper, the corrugated paper is provided with three sections along the corrugated direction, the three sections are respectively upper corrugated paper, middle corrugated paper and lower corrugated paper, the middle corrugated paper is formed by overlapping and bonding two layers of corrugated paper, and a layer of corrugated paper is bonded between the surface paper and the inner paper on two sides of the middle corrugated paper; or each of the middle corrugated paper and the lower corrugated paper is formed by overlapping and bonding two layers of corrugated paper, and a layer of corrugated paper is bonded between the surface paper and the inner paper on the other side of the middle corrugated paper. According to the corrugated reinforced paperboard, the strength of the paperboard is locally enhanced according to the strength requirements of different areas, the corrugated reinforced paperboard can be used for manufacturing a packaging box of which the strength needs to be increased at a specific part so as to increase the compressive strength, and paper is saved and the cost is reduced while the compressive strength and the bearing strength of the packaging box are ensured.

Description

technical field [0001] The invention belongs to the technical field of packaging articles, and in particular relates to a corrugated reinforced cardboard and a carton made of it. Background technique [0002] Corrugated cardboard is made by bonding face paper, inner paper, middle paper and corrugated paper processed into corrugated corrugated. According to the needs of commodity packaging, corrugated cardboard can be processed into single-sided corrugated cardboard, double-layer corrugated cardboard, three-layer corrugated cardboard, and five-layer, seven-layer, eleven-layer corrugated board. [0003] Corrugated cardboard is a multi-layer adhesive body, which consists of at least one layer of corrugated core paper interlayer (commonly known as "pit sheet", "corrugated paper", "corrugated core paper", "corrugated core", "corrugated base paper") and a layer Cardboard (also known as "boxboard", "boxboard") has high mechanical strength and can withstand collisions and falls dur...

AI Technical Summary

Problems solved by technology

[0009] The existing rocker cover, bottom cover, and body plate have the same thickness and structure. When only tiles are considered to increase the compressive strength of the body plate, the material of the rocker cover and bottom cover will increase and the cost will increase.

[0010] Extra-strong double-body cardboard is developed from single-pit cardboard. The middle layer of corrugated paper is made of two thick corrugated papers. The corrugated paper made of stacked and bonded thick corrugated paper is bonded with the face paper and the inner paper as a whole. In reality, sometimes it is not necessary to design the whole as a whole or be required to have the same strength index. For example, the design of cartons, in order to meet the compressive strength requirements Indicators, it may only be necessary to strengthen the strength of the carton vertical plate, and increase the thickness of the cardboard at the vertical plate to meet the design requirements for compression resistance. If the thickness of the cardboard at the top cover and bottom cover of the carton is increased at the same time, the strength of the carton vertical plate will not be strengthened much. Contribute, waste paper material

[0011] But in reality, there is a lack of a kind of cardboard for cartons to meet the above requirements

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