초록 ▼

An apparatus and method for erecting a carton having laminated corner structures. A multi-sectioned corner flap is folded progressively between an outer guide in the form of a longitudinal row of rollers and a spiraling row of conical rollers that accurately pinches a bent corner edge of the corner

An apparatus and method for erecting a carton having laminated corner structures. A multi-sectioned corner flap is folded progressively between an outer guide in the form of a longitudinal row of rollers and a spiraling row of conical rollers that accurately pinches a bent corner edge of the corner flap structure against the end panel to which it is joined in the carton blank. Surface-to-surface contact between the glued portions of the corner flap and the end panel is prevented until the folding action has been accurately completed.

대표청구항 ▼

In an apparatus for laminating the upright corners of a tray or carton formed from a blank that includes a bottom panel, end panels joined to the bottom panel along first scored lines at opposite ends of the bottom panel, corner flaps joined to each end panel along second scored lines at opposite si

In an apparatus for laminating the upright corners of a tray or carton formed from a blank that includes a bottom panel, end panels joined to the bottom panel along first scored lines at opposite ends of the bottom panel, corner flaps joined to each end panel along second scored lines at opposite sides of the end panels and including at least three sections in each corner flap adapted to be folded relative to one another about parallel third and fourth scored lines, and side panels joined to the bottom panel along fifth scored lines at opposite sides of the bottom panel, the improvement comprising: a hopper for storing a stack of blanks; delivery means adjacent to the hopper for discharging individual blanks from said hopper and for continuously transporting them along a path parallel to the third and fourth scored lines joining their corner flap sections; first means along said path for folding the corner flaps relative to the end panels about said third scored lines; second means along said path for folding the corner flaps relative to the end panels about said second scored lines; third means along said path for sequentially folding the corner flap sections relative to one another along the third and fourth scored lines to form a laminated configuration along the side edges of each end panel during transport of a blank along said path; and means along said path for adhesively securing the outermost section of each corner flap to the end panel joined to it.