Corrugated paper box knowledge collection - 楞 type (2)

Second, the type of corrugated board

The type of corrugated board depends on the combination of various types of corrugated board. The combination of different ways, corrugated board properties will also vary.

Corrugated board can be classified according to its structure or use.

Single-sided corrugated cardboard double-sided corrugated cardboard (three-layer single corrugated cardboard)
According to the structural classification of double-core double-sided corrugated cardboard (five double corrugated cardboard)
Three-core double-faced corrugated cardboard (seven-layer three-corrugated cardboard)
Inner packaging corrugated cardboard according to use classification

Packaging corrugated cardboard

The so-called classification according to the structure is similar to the classification based on the use of several sheets of core paper and facial paper.

First, single-sided corrugated cardboard

Single-sided corrugated cardboard As shown in the above diagram, there is a face paper on one side of the corrugated core paper. The name is defined according to the number of sheets used. The single-faced corrugated paperboard is not directly used to make a corrugated box, but rolled into a paperboard. Cylindrical or cut to a certain size, used as a buffer material and a fixing material.

Second, double-sided corrugated cardboard (three-layer corrugated cardboard) commonly known as single corrugated board

The double-faced corrugated cardboard is made by attaching paper on both sides of the corrugated paper.楞 type can use A, B, C, E which can be. At present, the most used cardboard boxes in the world are double-sided corrugated cardboard.

Third, double-watt double-sided corrugated cardboard (five-layer corrugated cardboard) commonly known as double corrugated

Double-Watt double-faced corrugated cardboard is made using two layers of corrugated cardboard plus a piece of paper, ie, a piece of single-sided corrugated cardboard and a piece of double-sided corrugated cardboard. In terms of structure, it can use a variety of 楞 type combinations, so its performance is also different. Because of its normal double-faced corrugated board, its performance in all aspects is stronger than that of double-sided corrugated board (three-layer corrugated board), especially its vertical compressive strength, which is obviously improved by double-core corrugated cardboard ( Corrugated cardboard boxes made of five-layer corrugated cardboard are used in the packaging of fragile items, heavy items, and long-term preserved items (such as fresh vegetables, fruits, etc., which contain a lot of moisture).

Four or three-watt double-faced corrugated cardboard (seven-layer corrugated board) commonly known as three-watt corrugated board

The three-core double-sided (seven-layer) corrugated cardboard is made of three-layer corrugated cardboard, ie, a two-tile double-faced corrugated cardboard is attached to a single-faced corrugated paper. Similar to double-tile double-sided (three-layer) corrugated paper, various combinations of A, B, C, and E can be used. Structurally, this type of corrugated paperboard using a combination of three types of corrugated board is stronger than a double-watted double-sided (three-layer) corrugated board made of a combination of two types of corrugated board. Therefore, such a three-watt double-sided corrugated board is used. Corrugated cartons made of cardboard are mostly used for packing heavy items in place of wooden boxes in the past, and such cartons are not limited to being used alone, and are often combined with wooden trays and pallets. The combination of the two is fixed with a steel belt or a special box nail.