Examples herein relate generally to methods, and associated components, characterized by the laser welding of crosslinked polyethylene plumbing components so as to create a leak-proof connection with both mechanical and thermal fusion bonds.

A centrifugal blood pump prevents a shaft member from oscillating due to expansion of a pump housing resulting from pressurization of the blood. The centrifugal blood pump is manufactured by assembling a bottom member 21 and a lid member 22, and compressing them in a direction in which the bottom member 21 and the lid member 22 approach each other by a deformation amount along their outer circumferential walls. The lid member and the bottom member are joined while in the compressed state in order to create a preloading force between the shaft member and bearings to resist the expansion due to pressurization of the blood during use.

An automated fiber-placement method comprises delivering a first quantity of pulsed energy to first portions of at least one fiber-reinforced tape strip, and delivering a second quantity of pulsed energy to second portions of at least the one fiber-reinforced tape strip, alternating with the first portions. Each one of the second portions at least partially overlaps two adjacent ones of the first portions such that overlapping regions of the first portions and the second portions have a higher temperature than non-overlapping regions of the first portions and the second portions. The automated fiber-placement method further comprises laying down at least the one fiber-reinforced tape strip against a substrate along a virtual curvilinear path, such that (i) at least the one fiber-reinforced tape strip is centered on the virtual curvilinear path, and (ii) the overlapping regions are transformed into discrete tape-regions, geometrically different from the overlapping regions.

A welding method heats a surface to be welded of a continuous strip member with a laser beam. The welding method pressurizes the strip member and a continuous film to weld the surface to the film, when or after heating the surface with the laser beam. The welding method preheats the surface before heating the surface with the laser beam. A welding device includes a heat device having an infrared light source disposed to extend along a feed path for the strip member. The heat device is configured to irradiate the surface with infrared light to heat the surface with infrared light. The welding device includes a pressure device configured to pressurize the strip member and the film to weld the surface to the film.

A vehicle lamp includes a lamp housing having an inner space and a welding surface, and a cover disposed adjacent to another vehicle lamp, and configured to cover the inner space and join to the lamp housing by laser welding. The cover includes a design surface in which an outer surface of an outer peripheral portion is formed as a curved surface and a welding leg that protrudes from a portion near the outer peripheral portion in the design surface. An annular portion on an inner peripheral side of the curved surface on an outer surface of the design surface is formed as a laser light incident surface. The curved surface is positioned on an outer peripheral side from an intersection point of a virtual line and the outer surface of the design.

An automated fiber-placement method comprises delivering a first quantity of pulsed energy to first portions of at least one fiber-reinforced tape strip, and delivering a second quantity of pulsed energy to second portions of at least the one fiber-reinforced tape strip, alternating with the first portions. Each one of the second portions at least partially overlaps two adjacent ones of the first portions such that overlapping regions of the first portions and the second portions have a higher temperature than non-overlapping regions of the first portions and the second portions. The automated fiber-placement method further comprises laying down at least the one fiber-reinforced tape strip against a substrate along a virtual curvilinear path, such that (i) at least the one fiber-reinforced tape strip is centered on the virtual curvilinear path, and (ii) the overlapping regions are transformed into discrete tape-regions, geometrically different from the overlapping regions.

A joint structure comprises a light-absorbable member having at least one opening portion and a light-permeable member superposed on the light-absorbable member so as to cover the opening portion, wherein a first annular weld part is formed so as to enclose the opening portion and join the light-absorbable member and the light-permeable member, and a second dot-like weld part(s) joining the light-absorbable member and the light-permeable member is/are formed in a position adjacent to the first weld part.

A resin composition for laser welding contains: relative to 100 mass parts of (A) a thermoplastic polyester resin material that contains a polybutylene terephthalate homopolymer and at least one of a polybutylene terephthalate copolymer, a polyethylene terephthalate resin, and a polycarbonate resin, 0.0005 to 0.5 mass parts of (B) nigrosine; and 0.01 to 2 mass parts of (C) a colorant containing at least an anthraquinone dye C1 having a maximum absorption wavelength in a range of 590 to 635 nm, a perinone dye C2 having a maximum absorption wavelength in a range of 460 to 480 nm, and an anthraquinone dye C3 having a maximum absorption wavelength in a range of 435 to 455 nm, at C1:C2:C3=24 to 41:24 to 39:22 to 46 as the mass ratio relative to 100 mass parts for a total of C1, C2, and C3.

A fabric clothing, in particular a press felt, for use in a machine for producing a fibrous web, contains a woven fabric strip having interwoven longitudinal threads and cross threads, as well as having a first and a second longitudinal end. The two longitudinal ends of the woven fabric strip are connected to one another in a connection zone. Provision is made that the two longitudinal ends are welded to one another by a transmission welding, in particular by a laser transmission welding.

A system for manufacturing a balloon envelope includes a table component and a sealing component. The sealing component includes a first level and a second lower level. The first level further includes first and second platforms. The first platform can provide a work area for sealing respective first and second sheets of material together to form a sealed edge and the second platform may provide a work area for sealing the second sheet of material and a third sheet of material together. The first, second, and third sheets of material respectively form first, second, and third gores of the balloon envelope. The sealing component may be configured to move along length of the first platform and to apply a heat seal to bond the first sheet of material to the second sheet material and form a sealed edge.