Bags with marks and systems of making same

A system for manufacturing a roll of bags with counting marks, the system comprising:

• a workstation having a feed end and a produce end, the workstation comprising:
• a moving mechanism configured to move a layflat tubing from the feed end toward the produce end, wherein the layflat tubing comprises a length direction and a width direction;
• a sealing mechanism configured to seal the layflat tubing to form a plurality of sealing lines, each of the sealing lines extending along the width direction;
• a punching mechanism configured to punch the layflat tubing to form a plurality of punching lines, each of the punching lines extending along the width direction;
• a cutting mechanism configured to cut the layflat tubing along the width direction to form a plurality of connected bags;
• and
• a winding mechanism configured to wind the connected bags into the roll of bags;
• and
• a coding machine coupled to the workstation, and configured to spray at least one counting mark on the layflat tubing, wherein the coding machine comprises a main body, a fixing structure and a spraying gun, wherein the main body comprises one or more replaceable ink cartridges for providing ink and a pressure mechanism to spray the ink through the spraying gun, wherein the spraying gun is fixed to the fixing structure and connected to the main body via a cable such that the ink of the one or more replaceable ink cartridges is operably moved from the one or more replaceable ink cartridges of the main body to the spraying gun via the cable, wherein the cable comprises one or more channels, wherein each channel is adapted for delivering a respective color of the ink, wherein the spraying gun comprises one or more nozzles coupled to the one or more channels of the cable for spraying the ink on the layflat tubing so as to form the at least one counting mark thereon, and
• wherein the connected bags in the roll of bags are separated by the punching lines, each of the connected bags comprises one of the sealing lines, and at least one bag of the roll of bags has one of the at least one counting mark that counts a relative position of the at least one bag in the roll of bags.