Because the edge of the printed sheet with a width of about 1cm is not printed, and the ruled line and color mark are required outside the finished product range, for the general printed matter, the paper is first cut larger than the finished product, and the post-press processing is performed. Then use a paper cutter or die cutter to cut off the surrounding waste paper.
If the indentation processing of the gift paper bag is to replace the indentation line with thick cardboard, the die cutting and the indentation are not suitable at the same time, so the gift paper bag is generally only subjected to indentation processing, and is not subjected to die cutting.
If the edge of the paper is cut with a paper cutter before the indentation, the positioning accuracy of the indentation will be affected. If the cutting is left after molding, the paper is not easily cut due to deformation of the paper during molding. Therefore, the commonly used method is to cut the paper into the unfolded size of the finished product before printing, and only perform the indentation processing after printing, and no need to cut or die-cut.
For example, a rectangular gift paper bag with length, width and height a, b and h respectively has the following conversion relationship between the finished product dimensions a, b, h and the finished product size A and B: the length after expansion is A=2×( a+b)+ side sticking, the width after unfolding B=folding +h+ bottom, wherein the side sticking is generally 2cm, and the flap is generally 5cm.
When the size of the paper is tight, the side sticks and folds can be slightly narrower, and if the gift paper bag is large, it should be slightly wider. The bottom of the gift paper bag = 0.5 × b + bottom stick, the bottom stick is generally about 1cm, if the gift paper bag is larger, it can be wider.