Handle bag making apparatus Patent #: 4386924
ApplicationNo. 347661 filed on 05/05/1989
US Classes:493/354, By use of composite cutting, breaking, tearing, or abrading tool and form scoring or crushing tool493/342, With scrap material separation or removal493/400, With means to advance or position work or product493/472With ejector or stripper
ExaminersPrimary: Terrell, William E.
Attorney, Agent or Firm
International ClassesB31B 001/16
AbstractMethod and apparatus for preventing the curling of a composite material having a fluid permeable base and a fluid impermeable outer surface in a manufacturing operation wherein a continuous sheet of the composite material is moved in incremental amounts through a cutter-creaser apparatus to have carton blanks formed therein wherein the curling is prevented by forming a curtain of air under pressure to apply downwardly directed forces on the fluid impermeable surface during the incremental movement of the continuous sheet through the cutter-creaser apparatus and the forming of the carton blanks.