The box pasting quality requirements of folding and gluing machine mainly include: accurate bonding alignment, no skew, firm bonding, no degumming, no internal and external lapping, no scratch on the printing surface or obvious scratches and dirt, easy to open the box, no line explosion and angle explosion.

1.One of the box pasting quality requirements of folding and gluing machine is that the interface position of the box pasting machine shall be aligned, especially for the boxes with docking requirements, otherwise the appearance of the box will be affected. The height of some cartons is less than their width and length (flat type). When pasting the cartons, it is easy to produce paper feeding skew, resulting in inaccurate alignment of lap joints.

2.The adhesive shall be firm without degumming is one of the box pasting quality requirements of folding and gluing machine. About 12 hours after bonding, after the glue is completely dry, tear off the edge of the adhesive paper and tear off one side of the paper (generally the fiber on the back of the paper, commonly known as broken skin). Otherwise, it proves that the bonding is not firm. Now many printing surfaces have undergone surface treatment of Ding art such as glazing, calendering, UV varnish and film coating. If this is not paid enough attention to in the paste box or without special treatment, it is very easy to cause poor adhesion and degumming.

3.Inside and outside. Internal lapping means that after pasting the box, the glue overflows from the paper edge inside the box, causing the two sides of the box to be stuck inside the box, making it difficult or impossible to hit the box at all. External lapping means that after pasting the box, the glue overflows from the paper edge of the outer surface of the box, resulting in the adhesion between the box and the box, and the glue trace is left on the box surface after separation. When the external lap is serious, the printing surface will be torn apart. Therefore, both inside and outside will have a serious impact on the quality of the box. If it is sent to the customer, it will add a lot of trouble to the customer’s use, especially if it can’t be used on the automatic packaging machine at all, which is bound to cause return and is very difficult to rework. Bring great losses to enterprises.

4. The folding and gluing machine scratches the printing surface or leaves scratches and dirt. During automatic box pasting, due to the action of mechanical friction, it is easy to scratch the ink layer on the box surface, leaving scratches on the box surface. Sometimes the ink will be dragged to the blank, resulting in dirt. Some products are printed on the front and back. When pasting the box, it is very easy to drag the ink on the back to the front of the box, resulting in dirt. The product can only be scrapped if it is serious.

5. Easy to open the box means that when the finished carton is used for canned goods, the knife can be hit by gently pushing towards the middle on the two folding sides. However, if there is internal overlap when pasting the box, or there is no pre folding of four edges or the pre folding angle is not in place, it will make it difficult to open the carton, bring inconvenience to customers and affect the smooth progress of customers’ packaging production line.

6.One of the box pasting quality requirements of folding and gluing machine is that it means non burst line and non burst angle. The indentation line is not burst and damaged after the die-cutting product is pasted. The phenomenon of line explosion and angle explosion in cartons may be caused by die cutting and paper, or improper operation during box pasting, which requires us to make specific analysis and identification, otherwise it is easy to cause unclear responsibility, and it is inconvenient for us to analyze the causes and solve the problems.

Generally speaking, it seems simple to use folding and gluing machine to paste boxes, but it is still very difficult. Before production, check whether all parts are coordinated and coordinated and make it satisfy the box pasting quality requirements of folding and gluing machine.