Abstract:
In a cup sealing system including a cup former and at least one burner for sealing a cup bottom seam where a cup side wall blank is mated with a bottom disk, with one portion of the side wall extending beyond the bottom disk, an improvement wherein at least one burner includes a burner head with a plurality of circumferentially arranged flame nozzles and a pilot flame aperture, the pilot flame aperture adapted to be located axially adjacent the one portion of the cup side wall; a flame ignitor/sensor positioned adjacent the flame aperture; and a combustion chamber which extends from a forward edge of the burner at the flame nozzles to a location axially beyond the container side wall to thereby achieve uniform heating of the extended portion of the cup side wall. The burner head also includes a pair of relatively movable sleeves adapted to create an annular pilot flame ring gap on start-up.
Abstract:
A flat-sitting bottom end closure for liquid filled, thermoplastic-coated paperboard containers, and mechanism for forming same. The mechanism includes an indexible rotor having a plurality of mandrels on which tubular container blanks are mounted, wherein each mandrel has an end cap defining a configuration which, in conjunction with a complementary pressure pad, produces four flat corner portions or pedestals on the container bottom end closure when confined between the pressure pad and each end cap.
Abstract:
There is provided a blanket sealing bag machine having a variable diameter sealing drum comprising a plurality of spindles disposed at a first end of an axle and a like plurality of spindles disposed at an opposing end of the axle, the plurality of spindles being greater than sixteen spindles, the spindles extending radially from the axle. There is further provided a blanket sealing bag machine that maximizes the angle of blanket wrap.
Abstract:
A method for providing paperboard to paperboard facing surfaces for forming an effective seal for cartons formed from a laminate of a relatively flexible fluid impervious material and a relatively rigid paperboard material.
Abstract:
A carton has an openable bellows folded top comprising opposed side panels (30, 32) and front (34) and rear (28) panels folded in and sealed between the side panels. The panels are sealed together to close the top in a liquid tight manner. The top-forming front panel has an upper sub-panel comprising a central portion (44) having an upper free edge for defining the rim of a pull-out pouring spout and first and second flanking portions (46, 48) of unequal width lying each on a respective side of the central portion. The central portion is of a lesser height than the flanking portions and is not sealed on its interior face to the overlying side panels or to the rear panel in sealing the top. A reliable seal is formed but there is no obstacle to the pulling out of the pouring spout once the wing portions have been peeled apart.