Dies or rollers for creasing corrugated boards

摘要

The purpose is to use a special female die 3 as shown in Fig. 4 to provide creases 22 in parallel with the flutes 23 that can be accurately folded. As shown in Fig. 4, a number of cross channels 35 are cut at right angles to the channel 34 with a spacing between any two adjacent ones in a conventional female die 3.