A unit for bonding the container with the lid, made of plastic, designated especially for pressurised beverages, having a profiled rim of the container opening and a profiled rim of the lid, characterised in that the profiled rim of the opening (2) of the container (1) comprises a flange (3) formed around the said opening (2), extending outwards away from the side wall of the container, where the flange (3) has a top surface (4), side surface (5) and bottom surface (6) bonded to the external side surface of the container (1), and where formed on the top surface (4) around the opening (2) of the container (1) there is a rib (7) protruding above the surface (4), while the profiled rim of the lid (8) comprises a groove (9) formed on the bottom surface (10) of the lid (8) around its bottom edge, the groove (9) accommodating the said rib (7) which supports the lid (8) without touching on the top surface (4) of the flange (3), where there is an energy director (12, 13) formed on the bottom of the groove (9) or the top surface of the rib (7), which focuses ultrasonic energy in the process of ultrasonic welding of the rib (7) and the lid (8).

A method of mechanically securing a first object including a thermoplastic material in a solid state to a second object with a generally flat sheet portion, with a perforation of the sheet portion, and with the sheet portion having an edge along the perforation is provided, wherein the first object is positioned relative to the second object so that the edge is in contact with the thermoplastic material and wherein mechanical vibration energy is coupled into the assembly including the first and second objects until a flow portion of the thermoplastic material due to friction heat generated between the edge and the thermoplastic material becomes flowable and flows around the edge to at least partially embed the edge in the thermoplastic material. After the mechanical vibration stops, the thermoplastic material is caused to re-solidify, whereby the re-solidified thermoplastic material at least partially embedding the edge anchors the first object in the second object.

The relates to a method of mechanically securing a first object to a second object and includes the steps of: providing the first object including thermoplastic material in a solid state, providing the second object with a generally flat sheet portion having an edge, positioning the first object relative to the second object and bringing the first object and the second object to a relative movement to each other. The relative movement includes a rotational movement, such that a melting zone including flowable thermoplastic material is formed and such that thermoplastic material of the melting zone flows around the edge to at least partially embed the edge in the thermoplastic material. The invention further concerns a connector that is suitable for being used in a method according to the invention.

Described herein is a process for producing a molded body which encloses a cavity, by welding two partial bodies. Also described herein is a die with which the process of producing the molded body can be carried out. Also described herein is a molded body which can be obtained by the process.

A method of anchoring a first object in a second object is described. The first object extends along an axis between a proximal end and a distal end and has a circumferential surface. The circumferential surface comprises at least one helical protrusion of a thermoplastic material. For anchoring, the first object is brought in contact with the second object, and mechanical vibration is coupled into the first object from a proximally facing coupling-in face thereof so as to drive the first object into the second object in a manner that the vibration and pressing cause the first object to be subject to a helical movement relative to the second object and cause thermoplastic material of the first object to become flowable and to penetrate into structures of the second object to yield, after resolidification, a positive fit connection with the second object.

A tool presses a joining element against a first object into a first opening of the first object while mechanical vibration energy is coupled into the first object and the joining element. Vibration energy and pressing force make the thermoplastic material of the distal portion of the joining element flowable and interpenetrates structures of the first object to yield, after re-solidification, an anchoring of the distal portion of the joining element in the first object. The second object is placed so that a proximal portion of the joining element is inserted into a second opening, and the first and second objects are pressed against each other while mechanical vibration energy is coupled into one of the first and second objects, until thermoplastic material of the joining element proximal portion is made flowable and interpenetrates structures of the second object to yield, after re-solidification, an anchoring in the second object.

A connector element (1) for being bonded to a substrate by pressing the connector element (1) and the substrate together and mechanically exciting the connector element (1) and the substrate relative to each other when being pressed together, comprises: a base portion (2) having a distal surface (23) and plural protrusions (3) distally extending from the distal surface (23) of the base portion (2). The protrusions (3) comprise a thermoplastic material configured to liquefy when the connector element (1) is pressed to the substrate and mechanically excited. Link members (4) comprising a thermoplastic material configured to liquefy when the connector element (1) is pressed to the substrate and mechanically excited. Each link member (4) connects two neighboring protrusions (3) of the protrusions (3).

The invention relates to a method for producing a connection between a first plastic component and a second plastic component, wherein at least one of the two components is produced by plastics injection moulding, wherein at least one fastening region is provided on the at least one component and is moulded with a surface structure of grooves having a small spacing, and wherein the components are connected to one another by an ultrasonic welding method in the fastening region.

A method for optimizing a welding process to produce a weld joint having a predetermined strength includes measuring a plurality of melt layer thicknesses of weld joints for a plurality of sample assemblies formed by the welding process, measuring a plurality failure loads of weld joints for the plurality of sample assemblies, each of the measured plurality of failures loads being associated with one of the measured plurality of melt layer thicknesses, selecting a first failure load from the plurality of measured failure loads responsive to determining that the first failure load corresponds to a predetermined weld strength, and selecting a first melt layer thickness from the plurality of measured melt layer thicknesses that is associated with the selected first measured failure load.

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.