Carton Knowledge

Corrugated cardboard is made by gluing paper, liner, core paper and corrugated paper processed into corrugated corrugated paper. According to the requirements of product packaging, corrugated cardboard can be processed into single-sided corrugated cardboard, three-layer corrugated cardboard, five-layer, seven-layer, and eleven-layer corrugated cardboard.

Corrugated cardboard with different corrugated shapes has different functions. Even if the same quality of top and back paper are used, due to the difference in corrugated shape, the performance of the formed corrugated cardboard is also different. There are four types of corrugated corrugated shapes in the world, which are A-shaped flute, C-shaped flute, B-shaped flute and E-shaped flute. Their technical indicators and requirements are shown in Table 1. Corrugated cardboard made of A-shaped corrugation has better cushioning properties and is rich in elasticity, and C-shaped corrugated is next to A-shaped corrugated. However, stiffness and impact resistance are better than A-type flutes; B-type flutes are densely arranged, and the surface of the corrugated cardboard is flat, with high bearing pressure, and suitable for printing; E-type flutes are thin and dense, which shows its rigid strength.

The difference between container and non-container is mainly the outer diameter, and it is closely related to the type of corrugation. The following table details the relationship between the carton inner diameter specifications, manufacturing specifications, and outer diameter specifications: