Envelope and blank folded to form the envelope

Abstract

An envelope is recognized from its appearance as an envelope not provided with perforations and is easy and infallible to open without use of a cutting tool, such as scissors. In an envelop (F 1 ) with an opening-side flap ( 15 ) folded to cover an opening ( 8 ), perforations (M 1 ) are formed along the opening ( 8 ), and an adhesive part ( 10 A) for sealing is formed in the vicinity of the perforations (M 1 ) to adhere the opening-side flap ( 15 ) to the back wall of the envelope. The opening-side flap ( 15 ) is folded and adhered so as to cover the perforations (M 1 ).

1 . An envelope comprising an opening-side flap folded back to close an envelope opening and adhered to an opening-side wall of the envelope with an adhesive, and characterized by a plurality of adhesive spots for sealing disposed at predetermined intervals so as to seal a proximal end side of the flap and a plurality of adhesive spots disposed at predetermined locations on a distal end side of the flap for preventing outward spread of the flap.  
     
     
         2 . An envelope according to  claim 1 , characterized in that said opening-side flap or outer peripheral flap is provided with a plurality of adhesive spots for sealing disposed at predetermined intervals so as to seal a proximal end side of the opening-side flap or outer peripheral flap, and a plurality of adhesive spots disposed at predetermined locations on a distal end side of the opening-side flap or outer peripheral flap for preventing outward spread of the opening-side flap or outer peripheral flap.  
     
     
         3 . An envelope characterized in that it comprises at least one outer peripheral flap provided on an outer periphery of a center sheet of the envelope and folded back and an overlapping flap for overlapping the outer peripheral flap, and that the overlapping flap is overlaid on and adhered at predetermined intervals to the outer peripheral flap.  
     
     
         4 . An envelope according to  claim 2 , characterized in that said overlapping flap has an outer peripheral end adjacent to the outer peripheral flap and that said outer peripheral end has a part disposed inward of a fold line of the outer peripheral flap.  
     
     
         5 . A blank folded to form an envelop, comprising, in a developed state, at least one outer peripheral flap provided on an outer periphery of a center sheet of the envelope and folded back and an overlapping flap for overlapping the outer peripheral flap, and characterized in that the overlapping flap is overlaid on and adhered at predetermined intervals to the outer peripheral flap.  
     
     
         6 . An envelope according to  claim 4 , characterized in that said overlapping flap has an outer peripheral end adjacent to the outer peripheral flap and that said outer peripheral end has a part disposed inward of a fold line of the outer peripheral flap.