Patented loop formation using blow air and an active thread cutting system
1. The punch needles make the holes in the signature from below.
2. Sewing needles pull the thread through every other hole
3. Air blast blows the thread as a loop into the slotted lever
4. The hook needle grabs the loop. Then the hook needle and sewing needle pull the thread up simultaneously, creating the thread chain.
The active thread divider system is not part of the basic equipment of any other entry-level model in the market. It guarantees that threads are trimmed between the individual book blocks without tension.