Why can't the paper in the supermarket fit?

The specific steps are as follows: 1 and 1 are folded in half. After being folded in half twice, the opened part clamps the upper part of 1. 2, 3 fold, after 2 fold, the lower part is pressed against the upper part. 3, 4 fold in half and repeat the above steps.

Small bags of paper towels are favored by the market, and most of them are 6-piece and 10-piece paper towels. At present, when packaging bagged paper towels in the market, the paper towels are folded into a "Z" shape, then folded once along the center line, and then folded once along the center line. When the folded paper towel is used, it needs to be opened with both hands after being taken out of the packaging bag.