The reason why heavy-duty cardboard boxes are called heavy-duty cardboard boxes is because the box body of heavy-duty cardboard boxes is relatively hard and sturdy, and can withstand heavier items, providing more obvious protection for stored items. All of this is due to the structural design of heavy-duty cardboard boxes. Ordinary cardboard boxes generally use three-layer paper, while heavy-duty cardboard boxes use seven layer corrugated paper. At the same time, some cardboard boxes may use honeycomb design, which greatly improves the seismic and compressive resistance of heavy-duty cardboard boxes.

The commonly used cardboard boxes have three layers, five layers, and seven layers are less commonly used. Each layer is divided into inner paper, corrugated paper, core paper, and surface paper. The inner and surface papers include tea board paper and kraft paper, and the core paper uses corrugated paper. The colors and textures of various papers are different, and the paper produced by different manufacturers also varies. The national standard for corrugated cardboard boxes is GB6543-86 "Corrugated cardboard boxes".

What is the direct relationship between the burst resistance and compression resistance of cardboard boxes

Compression resistance generally refers to the ability to withstand not only static pressure but also dynamic impact force under static force. The former can be determined by conducting maximum accumulation experiments, while the latter is generally selected based on natural falls at a certain height, frequent accidental impacts during transportation, and the degree of transport turbulence.

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