Section 1 Classification of Bad Boards
In the production of corrugated board, there will be various kinds of unpleasant phenomena, and sometimes even unexpected undesired products will be produced. The most common types of unfavorable phenomena can be mainly divided into three categories:
2. Adhesion of paper and paper edges is poor;
3, facial paper foaming;
4. Adhesion between A and B is poor;
5, in the paper, the paper appeared bad lamination;
6, A core, B core appear inverted or high and low. Second, cardboard bending 1, left and right bending;
2, bending around;
3, before and after bending;
4, before and after bending;
5, side (twist) bending;
6, S-shaped bending. Third, surface paper ribs 1, scratches ribs;
2, between the sinus ribs;
3, after the mark, black line ribs.
Section 2 Cause Analysis of Bad Paperboard
In general, there are some bad reasons for cardboard, mainly due to the following reasons:
1, mechanical failure;
2, the machine adjustment is not in place;
3, lack of steam supply;
4, the paste production failed;
5, the quality of the original paper does not meet the standard.
If you want to solve the above problems, you must carefully analyze the real cause of bad cardboard, and then think of ways to solve the problem, must not blindly adjust. The following analyzes the phenomenon of the three major categories of defective products. (To be continued)