Patent ID: 6131366
Filing Date: 2000-10-17
Classification: B65B,B65H

Abstract:
A packaging machine comprising:a roll supporting device with a support shaft rotatably supporting a film roll which extends in an axial direction, an elongated bag-forming film being wrapped around said film roll;a bag forming device which pulls out said film from said film roll and forms said film into a shape of a bag; anda packaging device for filling said bag-shaped film with articles to be packaged and sealing said film to produce a package;said bag forming device including a former for bending said film into a tubular form, a former roller for guiding said film in a film transportation direction to said former, and a former roller displacing mechanism, said former being selected from a plurality of formers with different sizes, said former roller displacing mechanism serving to move said former roller to a former roller position according to the size of said selected former along said film transportation direction, said former roller displacing mechanism including a first mechanism for supporting said former roller and moving said former roller to a plurality of different positions with respect thereto in said film transportation direction and a second mechanism for moving said first mechanism to a plurality of different positions in said film transportation direction.