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Corrugated cardboard is a multi-layer adhesive body composed of at least one layer of wavy core paper interlayer and one layer of cardboard. It has great mechanical strength and can withstand collisions and falls during transportation. The actual performance of corrugated cardboard depends on three factors: the features of the core paper and cardboard and the structure of the cardboard box itself.

The Construction of Corrugated Cardboard

Corrugated cardboard roll is mainly made by beating straw pulp and waste paper to produce raw cardboard similar to yellow cardboard. It is then mechanically processed and rolled into a corrugated shape and then bonded with box paper using adhesives such as sodium silicate on its surface. The corrugated waves of corrugated cardboard are like connected arched doors, arranged in parallel and supporting each other, forming a triangular structure with good mechanical strength. They can also withstand certain pressure from a flat surface and are elastic, with a good cushioning effect. It can be made into various shapes and sizes of liners or containers as needed, which is simpler and faster than plastic cushioning materials. It is less affected by temperature, has good shading properties, does not deteriorate under light, and is typically less affected by humidity. However, it is not suitable for long-term use in environments with great humidity, as this can affect its strength.

The larger the pit diameter of corrugated cardboard, the stronger its rigidity. The toughness of cardboard comes from the core paper layer rather than the need for thick and stiff fillers, which can reduce the weight and cost of cardboard. Core paper can be made from semi-chemical pulp and recycled paper material. Many manufacturers favor the latter due to its low cost. Although the paper strength could be better than could be better than the former, it can be upgraded by adding starch to the paper mill. The pit pattern occupies a certain space in corrugated paper, and its role is also very significant. Through it, it can withstand flat pressure, side pressure, and other irregular pressures.

The Usage and Function of Corrugated Cardboard

Firstly, protect the items. During transportation and storage, cardboard storage boxes can reduce the impact and compression of items, effectively protecting them from damage. Therefore, it is commonly used in the packaging industry, such as food, medicine, electronic products, etc. Secondly, fixed items. When packaging products, cardboard packing boxes can serve to secure items, prevent movement and misalignment during transportation, and ensure the integrity and safety of the product. Thirdly, the buffering effect. The structural characteristics of cardboard shipping boxes enable them to absorb vibrations and impacts during transportation, making them particularly suitable for protecting fragile or valuable items. Fourthly, it has a moisture-proof effect. Corrugated cardboard itself is composed of paper, and moisture-proof agents can be added during the production process to help store items that need to be kept dry.

Fifth, manufacture cardboard boxes and other packaging materials. Corrugated cardboard can be combined with other materials, such as cardboard, to make cardboard boxes, sandwich boxes, and packaging materials for other fragile goods. Sixth, make display racks and furniture. Corrugated cardboard can be processed into various shapes of display racks and furniture, such as door signs, display windows, billboards, beds, sofas, etc. It is widely used due to its lightweight, low cost, and strong environmental friendliness. Seventh, make sports equipment. Corrugated cardboard can also be used to make various shapes of sports equipment, such as hiking boards, sprinting equipment, folding bicycles, etc. The equipment is sturdy, durable, and easy to carry. In addition, it has some other practical uses.

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