Patent attributes
A base sheet and a cover sheet are supplied, the height of at least one product which is placed on the base sheet is measured, and second fold lines are formed on the base sheet and the cover sheet such that the second fold lines are spaced from respective first fold lines formed on the respective side portions of the base sheet and the cover sheet and such that the space between each of the first fold lines and the corresponding one of the second fold lines is adjusted based on the value of the measured height of the product. The base sheet is folded, the base sheet and the cover sheet are arranged so that the base sheet crosses the cover sheet, the cover sheet is placed on the base sheet, and the cover sheet is folded to bond the cover sheet to the bottom sheet.
