A combination of a sonotrode and anvil, includes a sonotrode/anvil surface and a first row of sonotrode/anvil welding contact elements. The first/second series of each of the sonotrode/anvil welding contact element of a first row includes a first/second adapted lateral surface that joins at least one part of the first/second plateau surface with at least one part of the sonotrode/anvil surface side. The first/second adapted lateral surface includes a first/second curved surface positioned between the first/second plateau surface and the first/second substantially straight surface. The first/second curved surface has a convex outward arch. The welding contact element is positioned in relation to the anvil welding contact element such that the sonotrode welding contact element is positioned during welding next to the anvil welding contact element and is provided to form at least one part of a weld seam.

A method of making a tube (60) includes forming at least one tube layer (101, 106, 108); and forming at least one film layer (102, 103, 104) on the at least one tube layer, wherein the at least a portion of the at least one film layer does not completely overlap the at least one tube layer.

A method of making a tube (60) includes forming at least one tube layer (101, 106, 108); and forming at least one film layer (102, 103, 104) on the at least one tube layer, wherein the at least a portion of the at least one film layer does not completely overlap the at least one tube layer.

A pipette structure (160B) includes first and second body sections (164, 166) connected at a junction and including first and second fluid passages, respectively, with the pipette structure including (i) a bellows joint (165) permitting pivotal movement between the first and second body sections (164, 165), and/or (ii) the second fluid passage of the second body section includes greater width dimension at a sample introduction end than a width dimension at the junction. Such a pipette structure may be embodied in a unitary measuring pipette or an extension tip device for a measuring pipette. A method is provided for transferring material between an interior of a cell culture housing that includes a structured surface defining an array of microwells suitable for three-dimensional culture of multi-cell aggregates and an external environment. A method for fabricating a pipette structures is further provided.

A pipette structure (160B) includes first and second body sections (164, 166) connected at a junction and including first and second fluid passages, respectively, with the pipette structure including (i) a bellows joint (165) permitting pivotal movement between the first and second body sections (164, 165), and/or (ii) the second fluid passage of the second body section includes greater width dimension at a sample introduction end than a width dimension at the junction. Such a pipette structure may be embodied in a unitary measuring pipette or an extension tip device for a measuring pipette. A method is provided for transferring material between an interior of a cell culture housing that includes a structured surface defining an array of microwells suitable for three-dimensional culture of multi-cell aggregates and an external environment. A method for fabricating a pipette structures is further provided.

Systems and methods are presented herein for a method of attaching a strip to a housing. An internal support member is inserted into a collapsible housing, such that it is arranged along a longitudinal axis of an inner surface of the collapsible housing. An outer support member is arranged along an outer surface the collapsible housing opposite the internal support member. A strip is positioned along the outer surface using the outer support member and the internal support member. Then the strip is permanently welded to the outer surface using a welding element. Welding is performed by a welding element located in one (or both) of the internal support member or the outer support member.

Systems and methods are presented herein for a method of attaching a strip to a housing. An internal support member is inserted into a collapsible housing, such that it is arranged along a longitudinal axis of an inner surface of the collapsible housing. An outer support member is arranged along an outer surface the collapsible housing opposite the internal support member. A strip is positioned along the outer surface using the outer support member and the internal support member. Then the strip is permanently welded to the outer surface using a welding element. Welding is performed by a welding element located in one (or both) of the internal support member or the outer support member.

A dosing device for dosing plastic material, comprising an extrusion head that has a dispensing opening commonly called a die and a punch extending into the dispensing opening, coaxially thereto, for continuously extruding a plastic material in the form of a tubular or annular body, and a cutter for separating a dose of said plastic material in the form of a tubular or annular section. The cutter includes at least two elements having at least one cutting edge extending on either side of the dispensing opening and secured to a driver for symmetrically moving the at least two elements in relation to a longitudinal axis of the extruded tubular body until the tubular body is severed by said at least two elements in order to form a dose.

A process for producing a tube, comprising forming a blow-molded article and removing a bottom portion of said blow-molded article. The blow-molded article includes (i) a head portion, and (ii) a tube portion integral with said head portion. The tube may be decorated, such as with a label.

A combination of a sonotrode and anvil, includes a sonotrode/anvil surface and a first row of sonotrode/anvil welding contact elements. The first/second series of each of the sonotrode/anvil welding contact element of a first row includes a first/second adapted lateral surface that joins at least one part of the first/second plateau surface with at least one part of the sonotrode/anvil surface side. The first/second adapted lateral surface includes a first/second curved surface positioned between the first/second plateau surface and the first/second substantially straight surface. The first/second curved surface has a convex outward arch. The welding contact element is positioned in relation to the anvil welding contact element such that the sonotrode welding contact element is positioned during welding next to the anvil welding contact element and is provided to form at least one part of a weld seam.