Method of fastening sheet material

A method of providing an improved mechanical bond when fastening a plurality of paper sheets together. The body of sheet material is punched or cut through to form a flap. The flap is then folded over upon the body of sheets, and the flap and body of sheets are simultaneously crimped. A superior mec...

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Bibliographische Detailangaben
Hauptverfasser:	CALDERAZZO, FRANKLIN J
Format:	Patent
Sprache:	eng
Schlagworte:	MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNERANALOGOUS TO PAPER MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD ORMATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER PERFORMING OPERATIONS TRANSPORTING WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUSTO PAPER
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Beschreibung
Zusammenfassung:	A method of providing an improved mechanical bond when fastening a plurality of paper sheets together. The body of sheet material is punched or cut through to form a flap. The flap is then folded over upon the body of sheets, and the flap and body of sheets are simultaneously crimped. A superior mechanical bond is formed, because three separate bonds are made; the body of sheets are fastened together, the layers of the flap are fastened together, and the body of sheets is fastened to the flap.