The Folding Carton generally manufactured with 0.3-1.1mm thick folding paperboard. It can be storage and shipped as flat cardboard stacking, both sides of the paperboard have long enough fibers in order to produce the necessary folding properties and adequate bending strength which will not make the folding carton cracking along with the creasing line.
The folding cardboard includes the manila cardboard, white board, box board, liner board, craft paper board, double-sided Leis cardboard, glass paper and coated paperboard and other varieties. Less than 0.3mm thick paperboard manufacture of folding cartons and its stiffness can not meet the strength requirements, but thicker than 1.1mm cardboard in general folding carton processing equipment is difficult to obtain satisfactory indentation.
During folding carton design, you can choose the appropriate thickness of the cardboard according to the carton volume and mass of contents. The main structure of the folding carton molding method is divided into several categories of tube, tray, tube tray and non-tube non tray. In addition, the folding carton also includes local structure in the form of the lid, the bottom of the box, cartons, boxes angle of locking, self-locking, partitions, windows, display boards, and so on. Folding carton is often named according to the characteristic structure, the characteristic structure is the main structure can also be a partial structure, for example, the the lock bottom tray, the main structure is a tubular, but the characteristic structure is the partial structure, self lock bottom became its name. Another example is the tray folding carton, there are two characteristic structures, the local structure of the box side walls can be flat-folded, and the other is the main structure is the tray style.
For folding carton design, in the bottom of the box is necessary to guarantee the strength, but also to keep it simple. The bottom of the box mainly include insert back cover, rolling cover, bottom lock, automatic bottom lock, partitions back cover partitions self-locking, adhesive back cover etc..
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