An intravenous delivery system may have a liquid source containing a liquid, tubing, and an anti-run-dry membrane positioned such that the liquid, flowing form the liquid source to the tubing, passes through the anti-run-dry membrane. The anti-run-dry membrane may be positioned within an exterior wall of a drip unit, and may have a weld surface secured to a seat of the exterior wall via application of compression to press the weld surface against the seat, and application of coherent light or vibration. In response to application of the coherent light or vibration, localized melting may occur, causing the weld surface to adhere to the seat. The anti-run-dry membrane may be modified to have a melting point close to that of the seat. Ultrasonic or laser welding may be applied in a manner that causes portions of the seat to melt and flow into pores of the weld surface.

A welding head comprises a welding element (51) for welding a lid (1) to an opening device of a container (10). The welding head (43) further comprises a 5 compensating device (62) operable for compensating a misalignment between the welding element (51) and the lid (1), thereby centering the welding element (51) relative to the lid (1).

An external thermal heat-stake arrangement includes a polymeric base member having a collared heat-stake having an inner diameter and a second member disposed within the inner diameter of the collared heat-stake. The collared heat-stake is operatively configured to be deformed by a heated element to retain at least a portion of a peripheral edge of the second member to the polymeric base member.

A method of joining polymer components includes additively manufacturing first and second mating features on first and second polymer components such that a mechanical lock is created through undercut geometric features of an adhesive material when the polymer components are joined. Adhesive is added between the mating components to strengthen the joint.

An apparatus for capping a container (10) comprises: a conveying device for conveying the container (10) along a path; an applying head (23) for applying a lid (1) onto a neck (9) included in an opening device of the container (10); a welding head (43) arranged downstream of the applying head (23), the welding head (43) comprising a welding element (51) for welding the lid (1) to the opening device.

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 water valve, guide tube for a water valve, and associated method are provided. The water valve includes a housing and the guide tube is installed on the housing via laser welding. The guide tube and housing each provide axially facing mating surfaces which abut one another in a pre-bonded configuration. In a post-bonded configuration, a laser weld joint is formed at the interface between the mating surfaces. The joint forms a portion of an outer periphery of the housing.

The present disclosure can provide for an ultrasonic welding method for a pair of workpieces. The method can include first pressing an ultrasonic welding stack against a first workpiece in the pair so that the first workpiece comes into contact with a second workpiece in the pair. The method can then provide for initiating a weld phase by outputting energy from the ultrasonic welding stack to the first workpiece. The method can provide for monitoring, with at least one sensor, a sensed parameter. The sensed parameter can be, for example, weld force and/or weld force rate of change. The method can provide for determining whether the sensed parameter has reached a predetermined level. Based on determining that the sensed parameter has reached the predetermined level, the method can provide for ending the weld phase.

A heat-seal band is provided that incorporates voltage sensing wires, such as signal wires or conductors that are separate from current load carrying wires or conductors. This provides two discrete electrical paths: a voltage sensing path, and a current transmission path. The voltage signal conductor(s) in the voltage sensing path may be insulated to mitigate any non-desired influence by means of the voltage signal conductor's exposure to thermal or electrical influences from the current transmission path, including current transmission paths defined through conductive tabs that connect the heat-seal band to the current load conductors. The voltage signal conductor may connect at a node to the tab to band (tab/band) junction, which is defined at an intersection of the heat-seal band's conductive tab and the band that directs heat into a workpiece. Additional or a second set of voltage sensing conductors may be electrically connected to the heat-seal band at a location that is spaced from or in a subset of the first set of voltage sensing conductors. The second set of voltage sensing conductors may provide a secondary voltage sensing arrangement as a verification tool for evaluating temperature discrepancies between their locations and those of the first set, indicative of heating non-uniformity about the heat-seal band.

A split bus assembly is provided for a heat-sealing machine. The split bus assembly includes a clamp with first and second clamp segments that abut each other in face-to-face engagement. The engaging surfaces or inner walls of the clamp segments may be coated with a nonconductive material so that the clamp segments are electrically insulated with respect to each other. A tab terminal may be defined at each inner wall, constituting a zone of exposed conductive material which is configured to engage a conductive tab of a heat-seal band during use. Biasing members such as a silicone spring may be arranged in the tool to facilitate ejection of the heat-seal band during a removal procedure. The tool may be cooled by way of cooling fluid that flows through passages in the bus bars.