A welding method includes: moving a welding head toward a plurality of workpieces, wherein each of the plurality of workpieces includes a polymeric composite, the polymeric composite includes a polymer matrix and a plurality of fibers, and each of the fibers includes a magnetic material; applying a joining pressure to the workpieces with the welding head; applying energy to the plurality of workpieces to melt an interface between the plurality of workpieces, wherein a weld plane is defined at the interface between the plurality of workpieces; and applying a magnetic field to the plurality of workpieces to change an orientation of the plurality of fibers relative to the polymer matrix in the weld area so that the fibers in a weld area are at an angle relative to the weld plane.

Provided is a welding joining method for joining end portions of first and second pipes made of polyamide resin by bonding the end portions to each other by pressure in a molten state. The welding joining method includes: a placing step of placing an infrared radiation lamp between the first and second pipes placed to face each other at an interval; a heating and melting step of heating and melting the end portions of the first and second pipes by emitting infrared; and a pressure bonding step of cooling down the molten end portions in a state where the molten end portions are bonded to each other by pressure.

The invention relates to a device comprising a first fixing element, a further fixing element and a folded planar composite; wherein the first fixing element comprises a first fixing surface and the further fixing element comprises a further fixing surface; wherein the folded planar composite is at least partially fixed between the first fixing surface and the further fixing surface; wherein the folded planar composite comprises a first composite region; wherein the first composite region comprises a first layer sequence comprising a first composite layer comprising a first carrier layer, a second composite layer comprising a second carrier layer, a third composite layer comprising a third carrier layer and a fourth composite layer comprising a fourth carrier layer; wherein in the first composite region the second composite layer is joined to the third composite layer and the third composite layer is joined to the fourth composite layer; wherein in the first composite region the third carrier layer is characterised by a smaller layer thickness than in each case one selected from the group consisting of the first carrier layer, the second carrier layer and the fourth carrier layer or a combination of at least two of these; wherein the first fixing surface or the further fixing surface or both comprises a recess comprising a first recess region; wherein the first composite region is located at least partially between the first recess region and the first fixing surface or the further fixing surface.

A fusion bonding process for polymeric components and welding heads for use in the process are described. Methods and devices can be utilized to weld polymer-based structural components to one another by use of an enhanced friction stir welding technology that combines heating, pressure, and polymer agitation to form a highly secure joint between polymeric structural components and a short fiber reinforced thermoplastic connection element.

A method and installation for joining a cover layer to an object in a continuous process. Joining is effected with the aid of a joining material having thermoplastic properties, wherein the joining material is arranged between the cover layer and the object and is liquefied using ultrasonic vibration energy. Before application of the ultrasonic vibration energy, the joining material is preheated in a contactless manner with the aid of electromagnetic induction in the region of the glass transition temperature of the joining material or above this glass transition temperature. The object is in particular a chip board and the cover layer an edge strip to be joined to an edge of the chip board.

The invention includes a method of bonding a perfluoroelastomer material to first surface that includes: (a) contacting a first surface with a bonding agent comprising a curable perfluoropolymer and a curing agent; (b) curing the bonding agent to form a perfluoroelastomer material that is bonded to the first surface. In the practice of such method, the bonding agent may be a solution prepared by dissolving the curable perfluoroelastomer and the curing agent in a solvent. In an embodiment of the invention, the perfluoroelastomer material formed in step (b) is a coating layer or, alternatively, the first surface is a surface of a perfluoroelastomer member and the perfluoroelastomer material formed is a perfluoroelastomer weld.

The present invention relates to a method for interconnecting components of a sporting good, in particular a sports shoe, and a sports shoe manufactured with such a method. The method may include (a.) forming a pattern element having at least one removable at least partially non-transparent or non-reflective portion, (b.) irradiating at least one of the first and the second component via the pattern element with heat radiation and (c.) interconnecting the irradiated first and second component.

A method for joining together different components or different sections of a single component, wherein at least one of the components is a thermoplastic fiber composite component, by using a threaded fastener. Heat is used for softening the thermoplastic fiber composite component to be joined together with the threaded fastener. A joined-together fiber composite component of a vehicle, aircraft or spacecraft, can be obtained by the disclosed method.

The present invention relates to a method for producing a container which consists of a thermoplastic at least to some extent and comprises at least a first compartment element and at least a second compartment element joined to the first compartment element in a joining region by thermoplastic welding. The invention also relates to a plastic container which can be, and preferably is, produced according to said method.

A technique for sensing a weld seam geometry of a plastic butt weld seam, preferably plastic pipes, including: manual positioning of an optical sensor in relation to a butt weld seam between pipeline components, preferably plastic pipes, wherein the sensor is aligned approximately perpendicularly to the pipe centre axis, automatic approaching of the sensor of measurement positions along or around a sensor axis, acquiring the visible weld seam geometry and/or the data by means of the sensor in each approached measurement position, determining the optimum measurement position by way of the acquired data, preferably by means of an algorithm, automatic approaching of the sensor of the optimum measurement position along or around the sensor axis, acquiring the weld seam geometry to determine the quality of the weld seam, analyzing and judging the measurement of the acquired weld seam geometry at the optimized measurement position.