In the modern packaging industry, the quality and structure of cardboard directly affect the firmness and durability of packaging. The 7-layer cardboard production line, especially the production process of BAB flute, has become the focus of many companies. This article will take you to an in-depth understanding of the 7-layer cardboard production line and the production process of BAB flute, revealing its important position in the packaging industry.


What is 7-layer cardboard and BAB flute?


7-layer cardboard, also known as seven-layer corrugated cardboard, consists of seven layers of paper, usually including three layers of flat paper (face paper, core paper, lining paper) and four layers of corrugated paper. BAB flute refers to the corrugated structure, which can provide better cushioning performance and strength.


Composition of 7-layer cardboard production line
The 7-layer cardboard production line is a complex and highly automated system, which mainly includes the following parts:


Base paper unwinder: unwind the base paper roll and feed it into the production line.
Corrugator: press the corrugated core paper into a corrugated shape.
Gluing machine: apply glue on the corrugated paper to bond with the flat paper.
Laminator: Press the face paper, corrugated paper and lining paper together.
Dryer: Dry the paperboard through hot air or heating plate to ensure that it is firmly bonded.
Cutter: Cut the formed paperboard into the required size according to specifications.
Stacker: Stack the cut paperboard for subsequent transportation and storage.
BAB flute production process
As a key structure in the 7-layer paperboard, the production process of BAB flute is crucial. The following is the specific production process of BAB flute:


Corrugated forming: The base paper passes through the corrugated roller to form a corrugated shape under high temperature and pressure. BAB flute usually consists of two layers of corrugated paper of different heights to enhance the strength and cushioning performance of the paperboard.


Gluing and bonding: After the corrugated paper is formed, adhesive is applied to the crest of the corrugated paper to bond it with the upper and lower layers of flat paper. High-quality adhesive and precise glue application are the key to ensure bonding strength.


Lamination synthesis: The glued corrugated paper and flat paper are pressed together through a laminator to form a multi-layer structure. This process requires precise control of temperature and pressure to ensure that each layer of paperboard is firmly bonded and the surface is flat.


Drying and shaping: The laminated cardboard enters the dryer and is dried by hot air or heating plates to ensure that the adhesive is fully cured and the cardboard reaches the ideal hardness and strength.


Quality inspection: The final BAB corrugated cardboard needs to undergo strict quality inspection, including strength test, flatness test and adhesion test to ensure that the product meets the standards.


Advantages of BAB corrugated cardboard
The 7-layer cardboard with BAB corrugated structure has the following significant advantages:


High strength: The multi-layer structure and special corrugated shape give it extremely high compressive strength and impact resistance.
Good cushioning performance: The corrugated structure can effectively absorb external impact and protect internal items.
Lightweight: Despite its high strength, the cardboard is light in weight and easy to transport and handle.
Environmentally friendly and renewable: The cardboard material can be recycled and meets environmental protection requirements.
Conclusion
The BAB corrugated production process on the 7-layer cardboard production line is the core of cardboard production technology. Its complex process and strict quality control ensure the high quality and high performance of the cardboard. In the modern packaging industry, BAB corrugated cardboard has become the only choice for many companies due to its excellent performance and wide application prospects.


By understanding the production process of 7-layer paperboard production lines and BAB fluting, we can not only better understand the manufacturing process of packaging materials, but also make more informed decisions when selecting and using packaging materials. Whether for manufacturers or end users, high-quality paperboard materials are the key to ensuring product safety and improving packaging efficiency.