Big Hook is more popular in FIBC ( Jumbo) bag making industry.

Now for auto big bag lifting belt sewing machine we have LS200 & LS300 two series in option. LS200 is 3 times big hook. LS300 is 6 times big hook. Hook bigger means bobbin can load more threads, so changing bobbin time is much longer, this way can highly improve the working efficiency.

LONGSEW develop the 3 times big hook sewing machine 10 years before, advantage is more stable working speed and quality. Now days for FIBC bag spout sewing we are still use LS200-3020CM. In long history 3 times big hook is very very popular.

Now people care more working efficiency, so extra big hook is coming in market. Now we highly improve the working speed for 6 time big hook to 1400rpm working speed, 10mm stitch length. So the working efficiency big hook have more advantage.

But 3 times big hook still have its market, and it will still have a long serving life.