The invention discloses a packaging box, a single-sheet packaging box prefabricating material and a forming method and
system thereof. The forming method of the single-sheet packaging box prefabricating material comprises the following steps that S10, patterns are printed on packaging paper, indenting is carried out, the packaging paper and an aluminum plastic laminating film are compounded, and arolled packaging material is obtained; and S20, paper of the rolled packaging material is discharged,
cutting is carried out, and a single-sheet packaging material is obtained; S30, the outer side ofthe first longitudinal side of the single-sheet packaging material is thinned, the thinned first side is turned outwards to be in
lap joint with the inner side of the longitudinal second side of thesingle-sheet packaging material, steam heat sealing connection is adopted, and a
barrel-shaped single-sheet packaging material is formed. According to the packaging box, the single-sheet packaging boxprefabricating material and the forming method and
system thereof, the packaging paper is printed and indented, and then combining,
cutting, edge
cutting and steam heat sealing are carried out; on one hand, the problem that printed content is likely to be separated is avoided; and on the other hand, the yield of the single-sheet packaging box is increased, and the problem of packaging box leakageis relieved.