BOOK BINDING INCLUDING A CONNECTING PORTION IN WHICH FOLDABLE LINES ARE FORMED CAPABLE OF ROTATING INNER SHEETS, A FRONT COVER AND A REAR COVER 360 DEGREES

摘要

PURPOSE: A book binding including a connecting portion in which foldable lines are formed is provided to distinguish contents of the book binding.;CONSTITUTION: A book binding including a connecting portion comprises inner sheets(20), cover portions(10), and binders(30). The inner sheets have a plurality of binding holes. The cover unit comprises a front cover, a rear cover and a connection part(15). The front cover is located at the front surface of the inner sheets and has a plurality of binding holes. The rear cover is located at the rear surface of the inner sheets and has a plurality of binding holes. The connection portion connects the binding holes of the front and rear covers. The binder is installed in the binding holes of the inner sheets, front cover and rear cover. The connection portion combines the inner sheets, front cover and rear cover to be rotatable. Fold lines(16) are formed at the connection part.;COPYRIGHT KIPO 2013