Talking about the Grade Division of Corrugated Cardboard

The single-watt single-sided corrugated cardboard was invented by American engineer Athertl.jones in 1871 and was used as a buffer material to wrap fragile glass and ceramic ware. Later, after the improvement of oliver.long, a double-faced corrugated cardboard similar to that commonly used now is formed.

Corrugated paperboard has good elasticity, strength and stiffness. Compared with traditional wooden boxes and metal barrels, the goods it uses to make cartons and carton packs show many advantages. Therefore, it is more and more widely used. At present, in countries with well-developed paper products, the proportion of corrugated board accounts for almost 1/3 to l/4 of the total packaging material.

First, the definition

1. Corrugated paper refers to the formation of regular and permanent paper after the corrugated paper has been processed by creping.

2. Corrugated paperboard refers to a kind of composite paperboard that is used to manufacture corrugated paperboards with one or more layers of corrugated paper bonded between several layers of paper or cardboard.

3. The minimum total quantification of corrugated board refers to the sum of the quantification of each layer of corrugated cardboard other than corrugated board.

Second, the type of corrugated board

(a), according to the classification of the corrugated tooth profile

1. v type corrugated 2. U type corrugated 3. Uv type corrugated

(b) Classification according to corrugated type

1. A type corrugated 2. b type corrugated 3. c type corrugated 4. e type corrugated

(c) Classification according to the number of layers

1. Single-sided corrugated cardboard

2. Single-sided double-sided corrugated cardboard

3. Two-ply double-sided (five-layer) corrugated cardboard

4. Three-sided double-sided (seven-layer) corrugated cardboard

(D) China's classification regulations for corrugated cardboard

Gb/t6544-2008 "corrugated cardboard" standard provisions: divided into single corrugated cardboard (three corrugated cardboard), double corrugated cardboard (five corrugated cardboard), three corrugated cardboard (seven-layer corrugated cardboard) three categories. According to the minimum comprehensive quantification of corrugated cardboard, single and double corrugated cardboard are divided into 5 categories, and three corrugated cardboard is divided into 4 categories; each category is based on burst strength or side pressure strength (Corrugated paper, cardboard and adhesive The main raw material for corrugated board production, their quality determines the strength of corrugated board) is divided into excellent products and qualified products, a total of 28 kinds of corrugated board.