Corrugated cardboard is a kind of cardboard composed of multilayer paper and fluting sheets. Due to its features of lightweight, and excellent compression, it is an ideal material to produce shipping boxes, mailer boxes, and product packaging boxes.
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Type of the Corrugated Cardboard
The corrugated board comes in five types, single face(2 layers), single wall(3 layers), four layers corrugated board, double wall (5 layers ), and triple wall(7 layers).
Single Face Corrugated Board
The single-face corrugated consists of one piece of fluting and a piece of liner paper, it is also called a two-layer corrugated board. The two-layer corrugated boards are commonly used in customized color mailing boxes.
- Liner paper type: brown kraft paper, white kraft paper, and dyed paper.
- Liner paper weight: 110 gsm,120gsm,130gsm, 140gsm, and 150gsm
- Fluting sheet weight: 115gsm,130gsm, 140gsm and 150gsm
- Fluting type: E flute and F flute
Single Wall Corrugated Board
The single-wall corrugated has three layers, including two pieces of the liner, and a piece of fluting in the center.Some small-size shipping boxes and mailboxes are made of three-layer corrugated cardboard.
- Liner paper type: brown kraft paper, white kraft paper, and dyed paper.
- Liner paper weight: 110 gsm,120gsm,130gsm, 140gsm, 150gsm ,180gsm, 200gsm and 250gsm
- Fluting sheet weight: 115gsm,130gsm, 140gsm and 150gsm
- Fluting type: B flute, E flute, and F flute
Four-Layers Corrugated Board
The four layers of the corrugated board include two pieces of liner and two pieces of fluting.
It is used to custom a high-quality color shipping box.
- Liner paper type: brown kraft paper
- Liner paper weight: 110 gsm,120gsm,130gsm, 140gsm, and 150gsm.
- Fluting sheet weight: 115gsm,130gsm, 140gsm and 150gsm
- Fluting type: AB flute, BC Flute, and BE flute
Double Wall Corrugated Board
The double wall corrugated consists of two pieces of fluting board and three-piece of the liner. It has an additional layer on the top. The double wall corrugated are common materials to make the various shipping boxes.
- Liner paper type: brown kraft paper
- Liner paper weight: 110 gsm,120gsm,130gsm, 140gsm, and 150gsm.
- Fluting sheet weight: 115gsm,130gsm, 140gsm and 150gsm
- Fluting type: AB flute, BC Flute, and BE flute
Triple Wall Corrugated Board
This corrugated board has seven layers, including four layers of liner and three layers of fluting sheet. Compared with other types, it is the thickest corrugated board.
7-layer corrugated cardboard is used for packing boxes of heavy goods (such as motorcycles, pianos, etc.), or for packing large electrical appliances, and machine tools.
- Liner paper type: brown kraft paper
- Liner paper weight: 110 gsm,120gsm,130gsm, 140gsm, and 150gsm.
- Fluting sheet weight: 115gsm,130gsm, 140gsm and 150gsm
- Fluting type: AB flute, BC Flute.
Popular Colored Corrugated Cardboard
In addition to the common brown corrugated board, colored corrugated cardboard is also available. This colored corrugated cardboard is suitable for DIY handicrafts, flower packaging, and the packaging of inner boxes of products
Black Corrugated Board
Black corrugated board is made of black dyed paper, it is available in a 2-layer corrugated board or 3-layer corrugated board.Black corrugated cardboard is mostly used for the inner box packaging of products.
- Liner paper type: black dyed paper
- Liner paper weight: 110 gsm,120gsm,130gsm,
- Fluting sheet weight: 115gsm,130gsm, 140gsm
- Fluting type: E flute and F flute
Colorful Corrugated Board
The Corrugated cardboard can also be customized in different colors according to the customer’s requirements, such as red, green, purple, yellow, orange, etc.
These colored corrugated boards are suitable for handicrafts, gift boxes, and flower packaging.
- Liner paper type: dyed color paper
- Liner paper weight: 110 gsm,120gsm,130gsm,
- Fluting sheet weight: 115gsm,130gsm, 140gsm
- Fluting type: E flute and F flute
White Corrugated Board
White corrugated cardboard is made of white Kraft paper, which has food-grade cardboard, It is suitable for baking boxes and other food packaging boxes
- Liner paper type: white kraft paper
- Liner paper weight: 110 gsm,120gsm,130gsm,
- Fluting sheet weight: 115gsm,130gsm, 140gsm
- Fluting type: E flute and F flute
What is the Difference Between Flute Types?
According to the amount and the height of fluting each 30cm, fluting is divided into different types: A flute, B flute, C flute,E flute, and F flute.
These different types of flutes will affect the strength and hardness of the corrugated board, so it is important to know the differences between these flutes.
| Flute Type | Thickness | Flute number each 30cm | Features | Application |
| A flute | 4.5-5mm | 34-36 pcs | Strong compression strengh | Shipping box for light products |
| C flute | 3.5-4.0mm | 38-40 pcs | Good compression strength and stacking | Shipping box for light products |
| B flute | 2.5-3mm | 47-52 pcs | Good hardness | Suitable for packing heavier and hard small size products |
| E flute | 1.1-2.0mm | 96-98 pcs | hardness and crush resistance | Widely used in various mailer boxes, and it is also suitable for inner and small gift boxes and packaging insert lining |
| F flute | 0.8-1 mm | 140-150 pcs | the thinnest board | It is also suitable for inner box packaging insert lining |
How to Choose the Corrugated Cardboard?
When we consider which kind of corrugated board should be selected. Stacking strength, compression resistance, and durability are the three key properties of corrugated paperboard.
What factors will affect the three properties of corrugated paperboard?
First of all, we know that corrugated cardboard is a multi-layer composite material, and the grade of paper has a great impact on its stiffness, hardness, and durable of corrugated.
Among the paper grades of corrugated paperboard, virgin kraft paper is the highest and best in quality.
Secondly, paperweight is another factor that decide the strength of the board, The paperw weight means the weight of square meters of paper. We found that the higher the paper weight, the higher the stiffness of the paper.
Third, different fluting types will also affect the compression resistance. The table above can help you quickly know the characteristics of different flutes.
Finally, the production process of corrugated paperboard will influence its durability.The production process includes the gluing process and fluting structure.
At present, there is U-shaped and V-shaped fluting structures, and U-shaped is better than V-shaped in strength.
Written in the End
I hope this article can help those who have questions about the types and structure of corrugated boards. Help you customize corrugated gift boxes better and faster
If you have other questions about corrugated cardboard, please feel free to contact Better Package, our experts are happy to answer any questions.
