| 摘要 |
<p>PROBLEM TO BE SOLVED: To make reuse practicable for both sides at the surface and the reverse side and to contribute to saving of resources by a method wherein a reply mail flap and a strong adhesive layer for sealing the reply mail flap are formed, adjoining a weak adhesive layer for sealing an outgoing mail flap, and an outgoing mail address section flap and the reply mail flap are made separable at a perforation. SOLUTION: The reverse side B of a sealing form is divided into sections including an outgoing mail address section doubling as a flap 2-1, a reply mail flap 2-2, a reply mail address section 2-3 and a remaining part 2-4 of a sealing envelope. The surface side is divided likewise, and the sections at each of the surface side and the reverse side are positioned face to face. Sealing adhesive 7 to be used for envelope flaps is applied to the section 2-2. A perforation 4 is provided at a position between the section 2-1 and the section 2-2, and the sections of the surface side corresponding thereto are processed likewise. Strong adhesives 5-1, 5-2 are applied to the sections 2-3, 2-4 of the reverse side B and weak adhesives are applied to the sections 2-1, 2-2 of the reverse side. Weak adhesive is applied to a section at the surface side corresponding to the section 2-4. With such structure, reuse can be practicable for both of the surface and the reverse side, and thereby saving of resources can be achieved.</p> |
