Carton, a blank for producing a carton, and methods and apparatus for erecting, closing, and sealing a carton

摘要

A blank for erecting a carton has 180 fold lines with a compressed area at each end and a slit joining the compressed areas. A carton is erected by moving the blank in a first direction against a stop to form a first set of 90 folds, holding the blank stationary with a suction while pushing the blank in a second direction to form a second set of 90 folds, erecting the carton. A filled carton is closed by advancing it through the central opening of a V-shaped member to increasingly fold the carton top panels. The closed carton 100 is sealed by advancing it through a second V-shaped member and into contact with a pivotally supported sealing device