Finishing printing materials

Paper drill bits come in various sizes and are hollow. As the bit cuts into the paper, round chips chips are fed up through the drill bit and into a waste compartment at the back of the machine. Loose-leaf papes are prepared in this way.

EMBOSSING. Embossing is generally done on a platen press. An embossing die is locked up in bed of the press and a counter die of the embossed image is attached to the platen. When the paper is pressed between the embossing and counter dies, Figure 10-5, a raised or embossed image results on the paper.

The embossing die is usually made of brass. Its intaglio image is etched or engraved. The counter die for the platen is made by impresing the embossing die into soft paper mache forming a relief image. When dry, the paper mache die is glued to the platen where the embossing die will strike.

DIE CUTTING. Die cutting is cutting is cutting out various shapes in paper or cardboard. It includes punching regular and irregular shaped holes. Die cutting is usually done on a platen press.

A die consists of one or more pieces of sheel cutting rule bent to form the desired shape. The die is set into a plywood saw kerf(cut) in the same shap, A band or jig saw can be used to make the cut. Several small pieces of sponge rubber or cork are then glued glued to the plywood base. These force out of the die after it is cut. A die used to cut a small box blank is shown in Figure 10-6.