SEALED LETTER PREPARATION DEVICE AND ENVELOPE PAPER

摘要

A sealed letter preparation device that seals by folding enveloped paper, which is provided with a pressure-sensitive adhesive, and contents, can be sealed with pressure bonding rollers of a smaller size than is conventional. The pressure-sensitive adhesive (106) is provided on both edge portions in the width direction of the envelope paper (100), and remoistening glue (107) is provided inside of the both edge portions. Water is added to the remoistening glue upon forming an envelope (50) by folding the envelope paper wrapping the contents, the entire surface of the envelope is bonded with the remoistening glue by applying pressure with low-pressure rollers, and the pressure-sensitive adhesive (106) is made to bond by applying pressure to the both edge portions of the envelope (50) with only top-and-bottom-grouped left-and-right pairs of pressure rollers (80,80) being narrower in width. Since the high pressure required to bond the pressure-sensitive adhesive need only be applied to the both edge portions of the envelope, the pressure rollers (80) may be small.