Abstract: An ultrasonic sealing device for a top fin of a gable-topped carton includes two jaws consisting of a jaw (2) with a planar active face and constituting the outer end portion of an ultrasonic horn (A1) and a jaw (6) constituting an anvil and having an active surface (10) which is planar except for upper and lower linear ribs (12) and (14) each extending the length of the surface (10). The lower rib (14) is linear and horizontal except for an upwardly bowed middle portion (16). The two jaws (2) and (6) serve to render gas-and-liquid tight a top fin of a conventional, plastics-coated paperboard, gable-top carton. The ribs (12) and (14) produce, in the outer surface of one of the outer sealing panels of the fin, corresponding furrows which extend over the whole length of the fin at levels where the inner sealing panels are sandwiched between the outer sealing panels, so as to seal the top fin in a gas- and liquid-tight manner along its whole length.

Abstract: An ultrasonic sealing device for a top fin of a gable-topped carton includes two jaws consisting of a jaw (2) with a planar active face and constituting the outer end portion of an ultrasonic horn (A1) and a jaw (6) constituting an anvil and having an active surface (10) which is planar except for upper and lower linear ribs (12) and (14) each extending the length of the surface (10). The lower rib (14) is linear and horizontal except for an upwardly bowed middle portion (16). The two jaws (2) and (6) serve to render gas-and-liquid tight a top fin of a conventional, plastics-coated paperboard, gable-top carton. The ribs (12) and (14) produce, in the outer surface of one of the outer sealing panels of the fin, corresponding furrows which extend over the whole length of the fin at levels where the inner sealing panels are sandwiched between the outer sealing panels, so as to seal the top fin in a gas- and liquid-tight manner along its whole length.

Abstract: An orientating apparatus for a pour spout fitment (4) having an annular flange (4F) comprises a mounting device for supporting the fitment (4), a follower (22), a drive arrangement arranged to produce relative rotary motion, about an axis, between the mounting device and the follower (22), a biassing device arranged to urge the follower (22) towards the mounting device, and a detection device arranged to detect relative movement between the mounting device and the follower (22) under the action of the biassing device and allowed by a notch (4G) in the flange (4F) and thereby to cause the drive arrangement to stop the relative rotary motion and to orientate the fitment (4).

Abstract: Apparatus for use in welding a pour spout fitment (22) to a container (32) comprises an ultrasonic welding horn (18) formed with a recess (20) at one end for receiving part of the fitment (22), an anvil (2) between an annular surface portion of which and that one end of the horn (18) are vibratingly pressed a wall off the container (32) and the flange (28) to each other, a head (14) at the opposite end of the head (14) for maintaining an annular, radially inner portion of the flange (28) spaced axially outwards from the annular surface portion of the anvil (2), the outer periphery of the ring (16) being radially dimensioned to be received in the recess (20).