How Paper Boxes Are Made / A practical and instructive book telling how the beginner may manufacture all kinds of paper boxes, with special chapters on the printing department for paper box plants, embossing, gold-leafing, label work, etc.

by Robert F. Salade

MAKING A CUTTING AND CREASING DIE

No matter what shape or size of a folding box or carton which may be wanted, it will require both creasing and cutting, and this means of course that both steel scoring rules and steel cutting rules will be needed in making the die.

Hard steel cutting rule is to be used for all straight cutting lines in the die.

Soft steel cutting rule is to be used for all round corners or odd-shaped sections of the die.

For the average folding box or carton 2-point cutting and creasing rules will be thick enough for their functions, but in the case of a large die for exceedingly heavy-weight box-board, 3-point, 4-point, or 6-point cutting and creasing rules will be found better for the press-work than the 2-point rules.

The regular 2-point cutting rule, turned upside down, or inverted, will serve as scoring rule, although the special scoring rule, made for this purpose by the manufacturers, will always produce the best results on account of it having a rounded face instead of a blunt face.

Steel die form from Simonds Mfg. Co.

On common-grade folding-box work, when the stock is heavy and tough, some die-makers use inverted cutting rules for scoring rules—usually old cutting rules which have lost their sharp edges by long service in other dies. By placing two 2-point inverted cutting rules together a 4-point crease is obtained. By placing three 2-point cutting rules together (inverted), a 6-point crease is obtained. Wide creases of this kind are needed only in heavy work, such as for example, suit boxes, flower boxes and hat boxes in large sizes.

A 2-point crease, or rather a fine crease obtained from standard 2-point scoring rule having a rounded face, will do well for the great majority of folding boxes.