APPARATUS FOR SEALING A WEB OF FILM IN A PACKAGING MACHINE

摘要

APPARATUS FOR SEALING A WEB OF FILM IN A PACKAGING MACHINE An apparatus ¢10! for sealing a web of film ¢16! in a packaging machine. The apparatus includes a sealing bar ¢18! for heating a web of film ¢16! to a temperature sufficient to melt at least a portion of the web of film. The sealing bar ¢18! includes a surface ¢19! that directly contacts the web of film and does not include a release layer. The surface includes thereon a measuring member ¢30! for measuring the temperature of the molten area of the film. The apparatus further includes a cooling member ¢42! for cooling the melted portion of the film to its crystallization point during a cycle time of the packaging machine.