What are the flute types of corrugated board, what are the characteristics of different flute types, what is the impact of choosing different flute type combinations on compressive strength? The editor will come for you one by one.

Hundred-year history of flute type: A flute to O flute

People defined the invented corrugated shape as A-shaped corrugated, followed by invented B-shaped corrugated, later invented C-shaped corrugated between the sizes of A B corrugated, then invented E-shaped corrugated, then appeared larger D Leng, K Leng. In recent years, people have developed miniature flutes, including F, G, N, O flutes.

Performance comparison of various flute types

At present, the most commonly used corrugated types are A, B, C, E, F, the edge compressive strength of corrugated cardboard is AB, BC, BE, A, C, B in order.

Type C flute: the compressive strength is higher than that of Type B flute. The surface is flatter than A-type flute, its performance is between A B-type flute.

Type B flute: high plane pressure, low vertical pressure resistance. Type A flute: good cushioning performance, high vertical compressive strength.

E-shaped flute: light weight, good printing effect.

The choice of corrugated box

In general, in order to ensure sufficient compressive strength for single-corrugated boxes, type A corrugated with strong vertical compressive capacity should be selected for single-corrugated boxes. Double-corrugated boxes should be AB corrugated, BC corrugated corrugated is the most ideal. The outer layer of corrugated cardboard is made of type B corrugated, which has strong impact resistance. The surface of the corrugated cardboard is flat the printing effect is good. The inner layer of corrugated paper is made of A C corrugated, which has good cushioning performance high vertical compressive strength. The role of protecting the goods, so that the physical properties of the carton play the advantages of the two types of corrugated, the medium packaging corrugated carton should be C B type.

Why is this?

The relationship between flute shape compressive strength

It is also very important for Kunshan corrugated carton manufacturers to choose the appropriate corrugated type according to the carton type. In people's consciousness, it is often believed that the larger the corrugated type, the higher the compressive strength of the carton, it is easy to ignore the influence of the corrugated type on the deformation. In fact, the larger the flute type, the greater the compressive strength of the carton the greater the deformation; the smaller the flute type, the smaller the compressive strength of the carton the smaller the deformation. If the carton is too large the corrugation is small, the carton will be easily crushed during the compression test; if the carton is too small, the corrugation is large, the compression test will cause excessive deformation a long buffering process.

When designing a carton, what principles should be followed?

Under the same production conditions, the order of compressive strength compressive deformation of Suzhou corrugated carton manufacturers is A>C>B>E, so the following principles should be followed when designing the carton: If the strength of the B corrugated is sufficient, the deformation is preferred B corrugated with a small amount, then C A corrugated.

Physical properties of various corrugated types corrugated boxes

Through the collection of production data of corrugated boxes over the years, under the same paper, due to various objective factors, sometimes the physical properties of corrugated boxes A are worse than those of corrugated boxes C. The compressive strength of B corrugated boxes is also higher than that of C corrugated boxes. Therefore, do completely rely on theoretical data when encountering similar situations, make the most ideal choice after testing several corrugated cardboard cartons.

According to the experiment, using the same base paper to make A, B, C, E corrugated cardboard, the strength comparison is as follows:

Plane pressure: Comparing the plane pressure of three different corrugated shapes of corrugated cardboard, it is known that the more the number of corrugations, the greater the plane pressure it can withstand. This plane pressure is called the flat compression strength, the order of strength is E-B-C- A.

Vertical pressure in the direction of the corrugated cardboard box in Suzhou: apply vertical pressure in the vertical direction of the corrugated shape, which is called vertical compression strength. The smaller the number of corrugations, the higher the vertical compression strength. Therefore, the order of vertical compression strength is A-C-B-E.

Parallel pressure of corrugated direction: Comparing the strength of corrugated cardboard with pressure parallel to the direction of corrugated shape, it is known that the more corrugations, the higher the strength. Therefore, the order is E-B-C-A.

The advantages of various types of corrugated cardboard:

The outer layer is E-shaped corrugated cardboard, which has good two-way rigidity, reduces the impact of external forces, reduces surface warpage. In an environment with high relative humidity, the strength of the cardboard is very small;

The inner layer is B-shaped corrugated cardboard, which has sufficient rigidity sufficient ability to resist plane pressure to withstand the pressure of the packaged goods on the box wall the inside;

The middle layer is type A corrugated cardboard, which has good elasticity has a buffering effect when subjected to impact loads. Because of the above-mentioned advantages, this combined form of corrugated cardboard is more more widely used in product packaging. Suzhou carton customization