A rotary device for welding a continuous web includes a rotary element, support elements for supporting the web, supported by the rotary element, and a plurality of welding units for welding the web. Each welding unit passes from a non-operating position to an operating position and vice versa, and includes a first movement device for commanding a relative rotation of an anvil element relative to a welding tip and a second movement device for moving the anvil element relative to the welding tip such that a contact surface of the anvil element and a contact surface of the welding tip make contact with a portion of the web in a zone between them, and vice versa. First and second drive mechanisms drive the first and second movement devices. The first and second drive mechanisms are configured to vary a positioning of the welding tip relative to the axis.

Dispensing devices can include buffers. This obviates the need for continually pumping the device to dispense spray or foam. A buffer can be spring loaded, spring loaded combination, elastomeric or gas, and can be in line or adjacent to a piston chamber. Such sprayers and foamers can be mounted upside down. With a buffer, a piston chamber can deliver a greater amount of liquid per unit time than can be dispensed through the nozzle(s). The fraction of liquid that cannot be dispensed can be sent to the buffer for dispensing after the piston downstroke has completed. Volume of the piston chamber and buffer, pressure response of the buffer, throughput of the nozzle, and the minimum opening pressure of the outlet valve can be arranged to restrict the outlet pressures of liquid droplets exiting the nozzle within a defined range.

The invention relates to a pressure unit (1) for sealing a package (2) for a food product, comprising a conveyor (3) for transporting the package (2) through the pressure unit (1) in a travelling direction (d), a first rotatable pressure roller (11) and a first rotatable anvil roller (21). The first pressure roller (11) is arranged opposite to the first anvil roller (21) to form a first nip (4) for receiving and rotationally engage with a portion (5) of the package, and arranged downstream of the first pressure roller (11) and the first anvil roller (21) in the travelling direction, a second rotatable pressure roller (12) and a second rotatable anvil roller (22). The second pressure roller (12) is arranged opposite to the second anvil roller (22) to form a second nip (6) for receiving and rotationally engage with the portion (5) of the package. The first anvil roller (21) and the second anvil roller (22), respectively, has a smooth rim surface (25). The first pressure roller (11) comprises a first bulge (15) extending annularly around its rim surface (18), the second pressure roller (12) comprises a second bulge (16) extending annularly around its rim surface (19), and the first bulge (15) is offset in relation to the second bulge (16) in an axial direction (7) of said first pressure roller (11) and the second pressure roller (12).

A cover layer is joined to an object by a pressing force and mechanical vibration. The cover layer has a cover layer contact surface, and the object has an object contact surface, and the cover layer contact surface and the object contact surface face each other. At least one of the cover layer and the object include a joining material. The cover layer contact surface is brought into contact with the object contact surface, and a sonotrode presses the cover layer against the object and applies mechanical vibration to an outer surface of the cover layer for a time sufficient for activating the joining material. Cover layer and object are conveyed relative to the sonotrode in a continuous manner in a conveying direction throughout the steps of arranging, of bringing into contact, of pressing and of applying vibration.

A system (300) for closing mailers includes a forming funnel (320) and a fusing device (310). The forming funnel includes funneling surfaces that receive an opening of a mailer in an insertion direction (302) and constrain the opening of the mailer after the opening of the mailer is inserted. The funneling surfaces are arranged to continue constraining the opening of the mailer as the mailer moves in a sliding direction (304). The fusing device includes a slot that receives the constrained opening of the mailer from the forming funnel. The fusing device applies pressure and heat to the opening of the mailer as the opening of the mailer moves through the slot. The pressure and the heat applied by the fusing device cause portions of the opening to fuse together to close the mailer.

Methods for forming absorbent articles and side seam bonds of absorbent articles are described. In one embodiment, a method of forming absorbent articles may comprise advancing webs, coupling absorbent cores to the webs intermittently to form open absorbent article chassis, folding the absorbent article chassis, forming a first side seam bond first bond pair between a first region of the webs and a second region of the webs with a first ultrasonic horn, forming a second side seam bond of the bond pair between the first region and the second region with a second ultrasonic horn, the first bond being associated with a first absorbent article chassis and the second side seam bond being associated with a second absorbent article chassis, and cutting the folded absorbent article chassis between the first bond and the second bond to separate the first absorbent article chassis from the second absorbent article chassis.

An energy apparatus can be configured for providing energy to an item being transferred over a rotatable drum. The energy apparatus can include a first energy mechanism configured to be fixedly coupled to the rotatable drum and rotate with the rotatable drum. The energy apparatus can also include a second energy mechanism configured to rotate around a circumference of the rotatable drum. The energy apparatus can additionally include a translation system coupled to the second energy mechanism and configured to move the second energy mechanism to an end position that allows the second energy mechanism and the first energy mechanism to provide energy to the item while there is no relative motion between the first energy mechanism and the second energy mechanism. Methods of providing energy to an item utilizing an energy apparatus are also disclosed.

A process for joining two sheeting articles reinforced with unidirectionally aligned endless-fibres by ultrasonic welding, wherein the fibres are embedded in a matrix of polycarbonate and the sheeting articles have abutting ends that are substantially rectangular and substantially even. The process comprises (1) arranging the sheeting articles next to one another end-to-end in the region of the abutting ends in a welding apparatus between a sonotrode and an anvil, (2) welding the sheeting articles by means of ultrasound, wherein the sonotrode and the anvil exert pressure on the to-be-welded sheeting articles in the melting region between the sheeting articles and perpendicularly to the abutting ends of the sheeting articles, and (3) removing the sheeting articles that are welded to one another from the welding apparatus. Also provided is a second process for joining two sheeting articles, a sheeting article, an apparatus, and a multilayer composite.

A method of applying a lid (1) onto a neck (9) of a container (10), the lid (1) having a side wall (3) extending around an axis and an end wall (2) extending transversely to said axis, comprises the following steps: —positioning the lid (1) onto the neck (9); —exerting on the end wall (2) a force directed towards the container (10), so as to level the lid (1) on the neck (9); —screwing the lid (1) onto the neck (9) by rotating the lid (1) in a screwing direction.

A horizontal pillow packing apparatus includes a center sealer configured to wrap a packing target object by bringing both end portions of a back surface of a belt-shaped film in a width direction into contact with each other and seal a center seal portion at which the both end portions of the back surface in the width direction are in contact with each other, and an end sealer configured to seal and cut both side portions of the belt-shaped film wrapping the packing target object in the width direction. The center sealer includes at least two pairs of heating rollers configured to nip and heat the center seal portion of the belt-shaped film wrapping the packing target object, and a pair of compression rollers configured to cool and compress, to bond the center seal portion, the center seal portion heated by the at least two pairs of heating rollers.