On the current situation of corrugated boxes

Talking about the current situation of corrugated boxes (IV)

now, there are several types of corrugated paper used all over the world: type A, type B, type C, type E; The uses of these four types of corrugated can be summarized as follows: for outer packaging - for inner packaging of type A, B, C corrugated - for small packaging of type B, e corrugated - for small packaging of type E corrugated

the uses of these four types of corrugated can be summarized as follows: for outer packaging - for inner packaging of type A, B, C corrugated - for small packaging of type B, e corrugated - for small packaging of type E corrugated

first, let's talk about the characteristics of type A, B, and C corrugated for outer packaging

1) A-shaped corrugation

a-shaped corrugation is characterized by a small number of corrugations per unit length and the highest corrugation. The corrugated box made of A-type corrugated box is suitable for packing lighter items and has a large buffer force

2) B-shaped corrugated box

b-shaped corrugated box is just opposite to A-shaped corrugated box. The number of corrugated boxes per unit length is large and the corrugated performance is the lowest. Its performance is also opposite to that of A-shaped corrugated box. Corrugated box made of B-shaped corrugated box is suitable for packing heavy and hard items, and is mostly used for packing canned and bottled items. "

in addition, there is a tendency to make use of the hard and unbreakable characteristics of the B-shaped ridge to make complex shaped combination boxes after punching and cutting

at that time, its market value will break the 800million mark. 3) C-shaped ridge

c-shaped ridge's corrugated number and ridge height per unit length are between A-shaped ridge and B-shaped ridge. The performance is close to the A-shaped ridge. In recent years, with the rise of storage and transportation costs, the small C-shaped corrugated board has attracted people's attention and has become the corrugated board used in European and American countries

secondly, talk about the characteristics of e-type corrugated used for inner packaging and small packaging

4) E-shaped corrugation

e-shaped corrugation generally has about 95 corrugations within the length of 30 cm, and the corrugation height is about 1.1 mm (the corrugation height of our company is 1.7 mm). Compared with type A, B and C corrugation used for outer packaging, it is thinner and harder. Therefore, the main purpose of developing E-shaped corrugated box is to make it into a folding carton to increase cushioning. Corrugated boxes made of e-type corrugated paper have beautiful appearance and smooth surface, which can be used for more complex printing, so they are usually used for decorative corrugated boxes

the above four corrugated types are shown in the following figure

corrugated type corrugated height (mm) 30 cm

standard corrugated number

type a 4 8 34 ± 2

type B 2.5-the circuit between the main body and the force measuring user before unpacking the device adopts plug connection 2.8 50 ± 2

type C 3 840 ± 2

type E is about 1.193 ± 5

Second, the type of corrugated board

the type of corrugated board depends on the combination of various corrugated types. The physical properties of corrugated board vary with different combinations

usually corrugated cardboard can be classified according to its structure or use

single-sided corrugated board, double-sided corrugated board (three-layer single corrugated board)

classification according to structure:

double core double-sided corrugated board, (five layer double corrugated board), three core double-sided corrugated board, (seven layer three corrugated board), inner packaging corrugated board

classification according to use

outer packaging corrugated board

classification according to structure, similarly, classification according to the use of several pieces of core paper and face paper

I. single sided corrugated paperboard

single sided corrugated paperboard, as shown in the above figure, is pasted with face paper on one side of the corrugated core paper, and its title is defined according to the number of sheets of face paper used. Generally, single-sided corrugated paperboard is not directly used to make corrugated cartons, but rolled into a barrel or cut into a certain size, which is used as cushioning material and fixing material

II. Double sided corrugated board (three-layer corrugated board) is commonly known as single corrugated

double sided corrugated board, as shown in the figure, is made by pasting face paper on both sides of corrugated paper. You can use either a, B, C or e for the ridge type. At present, the double-sided corrugated board is the most used in making cartons in the world

third, double corrugated double-sided corrugated board (five layer corrugated board) is commonly known as double corrugated

double corrugated double-sided corrugated board is made of two layers of corrugated paper plus face paper, that is, it is made of a piece of single-sided corrugated board and a piece of double-sided corrugated board. In terms of structure, it can adopt various combinations of ridge types, so its performance is also different. Due to the thickness of ordinary double-sided corrugated board, its performance in all aspects is stronger than that of double-sided corrugated board (three-layer corrugated board), especially the compressive strength in the vertical direction, which has been significantly improved. Corrugated boxes made of double-core double-sided corrugated board (five-layer corrugated board) are mostly used for the packaging of vulnerable items, heavy items and long-term stored items (such as fresh vegetables and fruits, which contain more moisture)

four and three corrugated double-sided corrugated board (seven layer corrugated board) is commonly known as three corrugated

three core double-sided (seven layer) corrugated board is made of three-layer corrugated paper, that is, a single-sided corrugated paper is pasted with a double-sided corrugated paper. Like double-sided (three-layer) corrugated paper, various combinations of corrugated shapes a, B, C and E can be used. Structurally, this kind of corrugated board made of three corrugated shapes is stronger than the double corrugated double-sided (three-layer) corrugated board made of two corrugated shapes. Therefore, the corrugated box made of this kind of three corrugated double-sided corrugated board is mostly used to pack heavy goods to replace the wooden box in the past, and this kind of box is not limited to being used alone, but often combined with wooden pallets and trailers. The joint of the two is fixed with steel belt or special box nails