The invention relates to the use of a low Tg compatible resin as an adhesive layer for the welding of a thermoplastic composite structure to a thermoplastic or thermoset structure. The invention is especially good for the welding of large parts, such as wind turbine halves and spar caps. A useful thermoplastic composite is one formed by the infusion and curing of long fibers by a reactive acrylic liquid resin system, such as ELIUM® resin systems from Arkema.

The method of bonding a first object (1) to a second object (2) uses a connector, the connector having a first sheet portion and a second sheet portion (32). The first sheet portion has at least one outwardly protruding first attachment portion (33), and the second sheet portion has at least one outwardly protruding second attachment portion (34). The connector (3) further has a spacer between the first and second sheet portions. For bonding, the first and second objects (1, 2) and the connector (3) are positioned relative to each other so that the connector is placed between the first and second objects. Then the first and second objects (1, 2) are pressed against each other while mechanical vibration energy impinges on the first and/or second object until a first flow portion of thermoplastic material of the first object in contact with the first attachment portion(s) and a second flow portion of thermoplastic material in contact with the second attachment portion(s) become flowable allowing the respective attachment portions (33, 34) to be pressed into material of the first and second object, respectively. After re-solidification of the flow portions, a positive-fit connection between the first and second objects via the connector results. The spacer defines a width (w) of a gap between the first and second objects (1, 2) after bonding.

Disclosed herein are a method for manufacturing a metal-polymer hybrid part, the metal-polymer hybrid part itself, and a laminate component. The method includes the steps of (a) providing a laminate component containing at least one metallic layer covered by at least one first functional layer, (b) providing a polymeric component, (c) bringing into contact the polymeric component with the at least one first functional layer of the laminate component, (d) joining the polymeric component onto the at least one first functional layer by physical treatment and (e) obtaining the metal-polymer hybrid part.

A vibration welding device has a first tool being with a vibration welding head arranged at a first support, wherein the vibration welding head vibrates in use in a first plane, and the first tool receives a first component, a second tool arranged at a second support, wherein the second tool receives a second component or a stack of welded components. The first and the second support are movable with respect to each other at least along a second axis perpendicular to the first plane from an initial position to a vibration welding position. A clamping arrangement having at least two oppositely arranged clamping devices, each having a clamping surface which is moveable along the first axis between a clamping position and open position, wherein in the clamping position, movement of the second component or the stack of welded components at least along the first axis is hindered during vibration welding.

A vibration welding device has a first tool being with a vibration welding head arranged at a first support, wherein the vibration welding head vibrates in use in a first plane, and the first tool receives a first component, a second tool arranged at a second support, wherein the second tool receives a second component or a stack of welded components. The first and the second support are movable with respect to each other at least along a second axis perpendicular to the first plane from an initial position to a vibration welding position. A clamping arrangement having at least two oppositely arranged clamping devices, each having a clamping surface which is moveable along the first axis between a clamping position and open position, wherein in the clamping position, movement of the second component or the stack of welded components at least along the first axis is hindered during vibration welding.

A two-piece connection between a supply pipe from a source of water and a connection to a fire sprinkler with the connector having a first or rear section entirely above a ceiling and a second or front section connected to the first section with the connection entirely above a ceiling and the forward portion of second section connected to the fire sprinkler. The first connector section, located entirely above a ceiling, has a spherical male sidewall with a rounded leading edge and a rear portion of the second connector section has a spherical female interior surface.

The invention concerns a method for joining a metal component and a polymer component, and a structure comprising said components. In the method, an extrusion die plate with a through hole is placed between the metal component and the polymer component. A probe is rotated and plunged across the thickness of the metal component and eventually through said through hole of the extrusion die plate, thereby extruding a part of the metal component through said through hole of the extrusion die plate into the polymer component. The probe has a rotation axis having an offset to the centre of the through hole during the rotating and plunging action.

A strapping apparatus for strapping articles with a strapping band having a base plate provided for arranging on an article, a tensioning device with which a band tension can be applied to the strapping band, and a sealing device for permanently connecting two band layers to each other.

A method for manufacturing a composite member, in which a composite member having a high joining strength can be manufactured in an inexpensive and efficient way; and the composite member. A metal member and a resin-containing member are joined together by heating the metal member while pressing the resin-containing member against a metal porous film formed on a surface of the metal member. The porous film is formed by impacting the surface of the metal member with metal powder by the cold spray process.

A preheating arrangement includes a preheating device defining a first plane by a first centerline along a first axis and a second centerline along a second axis perpendicular to the first axis. A first preheating structure is asymmetric with respect to the first and/or the second centerline. A second preheating structure is oriented like the first preheating structure such that, when viewed along a third axis perpendicular to the first plane, the preheating structures are arranged one above the other. A first actuator rotates the preheating device between first and second positions and the preheating structures in the first position have a first orientation and in the second position a second orientation rotated around the axis of asymmetry by 180° or in which they are rotated by an angle α in the range of 0°<α<360°, or 90°≤α≤270° or α=180° around the third axis compared to the first orientation.