The structure of corrugated board is very simple, generally consisting of sandwich and cardboard. This combination can be divided into five types to meet different needs in practical use.
The first type: exposed corrugated board
Exposed corrugated board is a relatively simple corrugated board with only one layer of corrugated paper and one layer of cowhide card.
The second type: single pit paperboard
Single pit paperboard is a layer of corrugated paper wrapped with two layers of kraft paper cards.
The third type: double pit paperboard
Double-pit cardboard is made by wrapping two layers of corrugated paper with three layers of cowhide cards at intervals, and the corrugated layer can be made of different kinds of corrugated paper.
The fourth type: three-pit cardboard
Double pit cardboard is made of four layers of cowhide cards wrapped in three layers of corrugated paper at intervals. Similarly, the spaced corrugated layers can be made of different types of corrugated paper.
Fifth: Super double-layer cardboard.
The super-strong catamaran is made of two layers of corrugated paper, one layer of extra-thick reinforced corrugated paper, and then wrapped with two layers of cowhide cards.
Corrugated paper is a layer of wavy lines in appearance, which are connected together like small arches and support each other. All the reasons for the cushioning and elasticity of corrugated board are also due to the existence of such corrugated ripples. Different combination types of corrugated boards involve different types of corrugated boards, which can be further subdivided.
The first kind: a stare blankly.
A-type stare blankly is 4.5~5mm high, which is the highest stare blankly. Because of the large space in the middle, it has good cushioning and certain elasticity.
The second type: B-stare blankly
The height of B-shaped stare blankly is between 2.5 and 3 mm, which has good impact resistance and stiffness, but not so good cushioning and elasticity.
The third type: C-shaped stare blankly
The height of C-shaped corrugated board is 3.5~4mm, and its internal arrangement is very large, and the wavy lines formed by the height of C-shaped corrugated board tend to be flat, so it seems that corrugated board made of C-shaped corrugated board is relatively flat and can withstand greater pressure, and is generally used as printing material.
The fourth type: E-shaped stare blankly
The height of E-shaped stare blankly is between 1. 1~2mm, which is the thinnest one and the densest one, which leads to its excellent rigidity and strength.
We can see corrugated cardboard in garment factories, express delivery companies, machinery factories and other places, and we can imagine that corrugated cardboard is very useful. Because of its various uses, corrugated boards with various styles and specifications are needed when making corrugated boards.
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