Electric welding coupler for the welding of pipes made of thermoplastic material or other weldable plastics comprising a cylindrical body made of thermoplastic material or other weldable plastics, containing at least one welding element, wherein the welding element is arranged close to the inner diameter of the cylindrical body, wherein the welding element forms at least two welding zones, a contact for feeding the electric current and at least one cavity, wherein the cavity is arranged in the cylindrical body, wherein a reinforcing ring is arranged around the outer circumference respectively outer diameter of the cylindrical body.

An article of manufacture that has at least three layers of heat sealable material. There is at least one first heat seal between at least two of the layers in a first area effected at a first temperature. There is also at least one second heat seal between at least two more layers, where at least one of these two layers is distinct from the at least two layers joined by the first heat seal, in a second area effected at a second temperature, where the second temperature is different than the first temperature, thereby allowing for heat sealing of discrete areas of the article in discrete steps.

A method for joining a device to an object with the aid of a combination of ultrasonic vibration energy and induction heating, wherein the device includes a portion of a thermoplastic polymer and a susceptor additive wherein this portion is at least partly liquefied or plasticized through the ultrasonic vibration energy in combination with the induction heating and wherein the joining includes establishing a connection between the device and the object which connection is at least one of a positive fit connection, a weld, a press fit connection, and an adhesive connection. The induction heating is applied for rendering the device portion suitable for absorption of ultrasonic vibration energy than other device portions by raising its temperature above the glass transition temperature of the polymer. The ultrasonic vibration energy is used for liquefying or at least plasticizing the thermoplastic polymer of the named device portion.

A method for manufacturing an acoustic panel by welding of at least two acoustic components made of thermoplastic material, a thermal gradient being applied on the acoustic components during the welding operation so as to apply a temperature higher than the glass transition or melting temperature of the material on the area to be welded and so as to apply a temperature lower than or equal to the geometric stabilization temperature of the material on the parts furthest from the area to be welded.

A heating device for thermal joining of plastic materials having a base body, which is penetrated by a cooling recess and on which an electrically insulating support surface is configured, on which at least one electrically conductive heat conductor is arranged, which is provided with an electrically insulating coating on a contact surface facing away from the support surface. The support surface has at least one curved or angled support surface section and that the heat conductor overlaps the curved or angled support surface section at least in parts.

A method for joining primary and secondary members includes providing a primary member, a secondary member and a heating element which is joined to one of the primary and secondary members. The heating element includes an electrically insulating matrix material and an electrically conductive reinforcing clement extending through the matrix material. The method further includes bringing the other of the primary and secondary members and the heating element into engagement and controlling a flow of electrical current in the reinforcing element so as to resistively heat and fuse at least some of the matrix material of the heating element with a matrix material of the other of the primary and secondary members. The method may be used to join a primary member such as a composite tubular and a secondary member such as a component for terminating the composite tubular.

A simultaneous laser welding apparatus of a vehicle light comprising a placement support for a container body and a lenticular body of a vehicle light to be welded together at reciprocal perimeter profiles associated at a welding interface, a plurality of laser sources suitable for emitting light beams, a plurality of optical fibres associated with the laser sources at input ends and suitable for transmitting said light beams, a fibre-holder support device for the optical fibres, suitable for blocking output ends of said optical fibres in predetermined positions, spaced apart by a pitch, a light guide provided with at least one seat which extends from a light input wall, which receives the light beams coming from the output ends of the optical fibres, to a light output wall which sends the light beams towards the welding interface. Advantageously, a single optical fibre is associated at its input end with each laser source so as to receive, channel and transmit towards the welding interface, the light beam produced by said corresponding laser source.

A process for producing a flexible container is provided. The process includes: A. providing a rear panel web, a front panel web, a first folded gusset panel web, and a second folded gusset panel web, each panel web having peripheral edges and a bottom face, each bottom face having two opposing tapered edges meeting at a bottom end; B. placing the folded gusset panel webs between the rear panel web and the front panel web, the gusset panel webs opposing each other, the panel webs configured to form a common periphery and the bottom seal area including the bottom end of each panel; C. first sealing the peripheral edges, the tapered edges, and the bottom seal area under a set of heat seal conditions; D. second sealing a portion of the bottom seal area under a second heat seal condition; and E. forming a flexible container.

A cover for a housing of a vehicle and a method of sealing a cover to the housing, where in at least one example, the cover comprises a cover body configured to cover an opening of the housing and to engage the housing at an interface around the opening. The cover may comprise a heating element embedded within the cover body and operable to at least partially melt a portion of the cover body as a part of a process for sealing the cover to the housing. The portion of the cover body may deform and conform to an interface feature at the mating surface of the housing due to the at least partial melting of the portion of the cover body, and, in some examples, the heating element may be configured to fail and be inoperable.

A machine and method for making bags is described and includes a web traveling from an input section to a rotary drum, to an output section. The rotary drum includes at least one seal bar, having a sealing zone, and a weakening zone disposed within the single sealing zone. The single sealing zone may be a heated perforator, and may include a heating wire. The heating wire may be an NiCr wire stitched into holes in a cap or on the seal bar. Bushings may be disposed in the holes.