Specifying custom poly bags requires an understanding of standard industrial manufacturing tolerances across width, length, gauge, and print registration.
Dimensional and gauge variance standards
Due to natural thermal expansion during extrusion and bag converting, standard industrial poly bags operate within ±3% to ±5% dimensional parameters.
Bottom seal vs side seal selection
Choosing between heavy-duty bottom heat seals (best for heavy bulk items) and neat side weld seals (best for retail displays) ensures your packaging performs without bursting during transport.
