Method and apparatus for folding and bonding a closing seal part of box-shaped package

摘要

A method and apparatus for folding and bonding a closing seal part of a box-shaped package (1) comprising the steps and corresponding members of folding a strip-shaped closing part (1b) of the package on an intermittently running conveyor (2), preheating outer surfaces of the package beneath said both-side overhanging portions (1c) into semi-weldable state, folding said overhanging portions (1c) along both outer sides of the package, pressing the folded strip-shaped closing seal portion against upper surface of the package without generating any gap therebetween and heat pressing the folded overhanging portions from outsides; and   folding said both-sided overhanging portions during transfer and just before the stop position for heat pressing from outside.