Sealed paper making method

摘要

In a method of making a sealed paper, a web of paper is unrolled and fed, while under a give tension, from a paper roll, and is single- or multiple-folded. Prior to the or each folding step, the unrolled web of paper is treated by having an adhesive applied to portions thereof destined to be a margin of the sealed paper (1) on an inner surface thereof representing a folding area other than on a side destined to contain a fold line (13b) therein. The web of paper folded is then cut to yield a number of sealable paper units (1) so treated and folded as above. The method further includes pressing the sealable paper units to have them sealed with the adhesive applied (12a) and thereafter discharging the sealed paper units each of which represents a sealed paper (1) as desired. The method may further include applying a print of a given message or information to be sealed on a sheet of paper before rolled to provide the above mentioned paper roll.