What Are The Types Of Corrugated Cardboard Pits in Corrugated Boxes?

 Corrugated cardboard is die-cut, indented, nailed or glued to make corrugated boxes. Corrugated box is a kind of packaging products with a wide range of applications, and the dosage has always been a variety of packaging products. Includes calcium-plastic corrugated boxes. For more than half a century, corrugated boxes have gradually replaced transport packaging containers such as wooden boxes with their good use performance and good processing performance, and have become the main force of transport packaging.
In addition to protecting goods, facilitating storage and transportation, it also plays a role in beautifying goods and promoting goods. Corrugated boxes are green environmental protection products, which are conducive to environmental protection and conducive to loading and unloading transportation.
According to the size of the grooves on the core paper, that is, its height and the number of pits in each unit of long charge, the corrugated cardboard can be further subdivided. There are four types of core paper pit patterns, and the table below shows the cardboard produced by Mitsubishi and Langston pit machines.
The carton caused by thicker "A" grooves has better top and bottom compressive strength than "B" and "C", but thinner "B" grooves have better resistance to uppressure compared with "A" and "B" grooves. "A" and "C" grooves are used in the manufacture of cartons that are pressed under pressure and require cushions for packaging.
The "B" groove is suitable for carton manufacturing where capacity and space are important and stacking strength is less. The "E" groove has high pressure resistance, but its shock absorption ability is slightly worse, and it is mainly used on corrugated boxes that carry heavy loads.