Roll bags are usually more efficient for retail, household storage, and manufacturing, but the perforation quality becomes critical.
The user experience depends on:
- clean separation;
- no accidental tearing into the next bag;
- easy identification of the opening;
- no excessive blocking between layers;
- consistent roll tension;
- compatibility with the carton or dispenser.
Single-folded bags can feel more premium and may be easier to access, but they often require more packaging space and handling.
For everyday consumer trash bags, I would generally start with rolls and invest in perforation, winding, and easy-open performance rather than treating the roll format as a commodity detail.