In an aspect, a biaxially oriented pipe has a thickened end portion. The end portion has the same inner diameter as the biaxially oriented pipe and has a larger thickness than the biaxially oriented pipe. The end portion is made of the same thermoplastic polymer composition as the biaxially oriented pipe.

A method of making a wind turbine blade is described. The wind turbine blade comprises first and second half shells joined together and a shear web bonded between inner surfaces of the respective half shells. The blade is made in a one-stage join up process, which involves supporting the half shells in respective mould halves, and arranging one of the half shells on top of the other half shell with the shear web arranged between the two half shells. Adhesive is provided between the shear web and the inner surfaces of the respective half shells. During the join-up process, the shear web is supported by stabilisers. The use of stabilisers avoids the need for a jig to support the shear web. Stabilisers attached to an inboard end of the shear web may remain accessible after the join-up and can be removed.

An apparatus for joining, in particular laser welding, two components, in particular plastics components, comprises—two workpiece receptacles (1, 3) for respectively holding the two components (2, 4) to be connected, —in each case one bearing element, preferably a bearing plate (7), for each of the workpiece receptacles (1, 3), —a clamping drive (SA) for at least one bearing element for feeding and bracing of the two components (2, 4) held in the workpiece receptacles (1, 3) during the joining process, —a controller (9) for the clamping drive (SA) and in particular a laser welding device (LS), and—a mechanically loose coupling between the clamping drive (SA) and bearing element (7) such that the two workpiece receptacles (1, 3) are tiltable towards one another during feeding and bracing. Also disclosed is a method for operating such a joining apparatus during a joining process of two components (2, 4) held in the workpiece receptacles (1, 3), in particular during a laser welding process.

A unit for the regulation for control of a fluid pressure, having at least one housing section and a switching film connected to the at least one housing section. A chemically inert, non-rubber-like PTFEswitching film switching film is disposed in the valve housing and switches at pressure differences of 1 mbar to 250 mbar for regulating, opening or blocking a flow of a fluid from the inlet to the outlet. The switching film is formed of a fluorine and carbon containing polymer material. The switching film has a plate-shaped flat body with a bending region and has a central closure region surrounded by the bending region. The bending region, when switching the switching film, moves the central closure region relative to a valve seat of the valve housing in an axial direction of the plate-shaped flat body toward or away from the valve seat by a stretch free or low-stretch bending movement.

A rotation speed sensor, configured to detect a rotation speed of a rotating body, is composed of a cable composed of an electric wire including a conductor wire, and a sheath provided over the electric wire, a circuit substrate mounted with an integrated circuit thereon and connected to the conductor wire being exposed from the cable, and a housing including a first housing, which is configured to hold the circuit substrate therein, and a second housing, which is configured to hold the cable therein, with the first housing being welded to the second housing, and with the second housing being welded to a surface of the sheath of the cable.

A wide section 71d which contacts a connector member and positions the connector member relative to a connector housing part is provided in a section where a first securing part 71b of a cover member 70 is provided and is configured so as to be wider than the other parts of the section where the first securing part 71b of the cover member 70 is provided; hence, it is possible to use the wide section 71d in the pressing section (pressing point OP) of an extrusion pin. As a result, it is possible to suppress distortion of the cover member 70 and to sufficiently smooth the welded section (first securing part 71b) of the cover member 70 even when the shape of the cover member 70 is complicated.

A method for manufacturing a welded molding made of liquid crystal polyester as a formation material is provided, the method including: a step of heating each of a first ridge portion of a first member made of the liquid crystal polyester as a formation material and a second ridge portion of a second member made of the liquid crystal polyester as a formation material to a temperature equal to or higher than a flow start temperature of the liquid crystal polyester; and a step of abutting the first ridge portion and the second ridge portion to each other to perform vibration welding while pressing the first ridge portion and the second ridge portion in a direction in which the first ridge portion and the second ridge portion are brought relatively close to each other.

A process for joining polymer molded parts. Providing a first part made from a first material and a second part made from a same or different first material. Attaching an infrared or other thermal bonding material to at least one of the parts in a place for the parts to be joined. Thereafter, heating the at least on infrared bonding material with an infrared heating element and pressing the first part into contact with the second part wherein a bond is formed.

A battery cell manufacturing device according to one embodiment of the present disclosure includes a sealing tool that presses a sealing part, in a battery case including a sealing part having a structure in which an electrode assembly is mounted onto a receiving part, and an outer peripheral surface is sealed by heat fusion, wherein the sealing tool comprises a first sealing tool located at an upper part and a second sealing tool located at a lower part with respect to the battery case, and wherein the sealing tool comprises a sealing surface in contact with the sealing part, and at least one pressure sensor is located on the sealing surface.

The semirigid plastic content of a fresh produce container is reduced by omitting or removing a central portion of a semirigid plastic lid to form a central opening therein. The central opening is covered and sealed by a plastic film, which can be applied before, during, or after packaging. The film can include visible indicia. The plastic film can be attached to an inner flange of the lid that surrounds the central opening, and can be by a resealable adhesive. During a packaging step, the tray is filled with the fresh produce, and then the lid can be sonically spotwelded to the tray. The sonic spotwelding can be of an outer lid flange to a corresponding outer tray flange. In embodiments where the central portion of the lid is removed, the removed plastic can be combined with precursor plastic and used to form additional semirigid plastic lids.