Provided is a thermal molding method for producing a thermally molded article having excellent abrasion resistance at its melt-fused part. Polyamide 6 and a copolyester are prepared separately. The copolyester contains terephthalic acid, ethylene glycol, and 1,4-butanediol as copolymerization units. The copolyester may further contain ε-caprolactone and/or diethylene glycol as a copolymerization unit. A multifilament yarn in which core-sheath type composite filaments each containing a core component and a sheath component at a ratio of 1 to 4:1 by mass are bundled is produced by a composite melt-spinning method using the polyamide 6 as the core component and the copolyester as the sheath component. Using the multifilament yarn, a product of filaments is produced by weaving, knitting, knitting and braiding, or braiding. The product of filaments is heated to melt the copolyester and fuse the core-sheath type composite filaments to each other while retaining the initial filament form of the polyamide 6, thus thermally molding the product of filaments.

Systems and methods are provided for designing composite parts. One embodiment is a method for fabricating a composite part. The method includes receiving a design that defines a stacking sequence for a composite charge comprising plies that have different fiber orientations, defining a splice zone within the design, modifying the design by splicing plies in a manner that accommodates ply slippage when the composite charge is formed to a contour, and fabricating a composite part based on the design that was modified.

Techniques for implementing a pipeline system that includes a pipe segment and a pipe fitting. The pipe segment includes tubing, which includes an inner barrier layer that defines a pipe bore, a reinforcement layer implemented around the inner barrier layer to define a fluid conduit, and an outer barrier layer implemented around the reinforcement layer, and a tensile clip secured to the tubing such that clip legs of the tensile clip are secured around the reinforcement layer. The pipe fitting includes electrofusion material implemented to define a fitting bore and a tubing cavity in which the tubing is to be secured and a tensile hook partially embedded within the electrofusion material such that a hook bend extends into the tubing cavity, in which the hook bend matingly interlock with a loop end of the tensile clip to facilitate transferring tensile force between the reinforcement layer and the pipe fitting.

Provided is a method for manufacturing a fishing net formed from a plastic net that can be handled by winding or folding although the net has plastic rigidity. The fishing net is manufactured by (1) a step of preparing a multifilament yarn formed by bundling a plurality of core-sheath type composite filaments, in each of which a core component is made of polyethylene terephthalate and a sheath component is made of polyolefin, (2) a step of preparing a yarn thread obtained by paralleling a plurality of the multifilament yarns, (3) a step of twisting or braiding four yarn threads 11, 12, 13, 14 to obtain a net constructed with strands 1 and intersections 2, (4) a step of heat-treating the net under without pressure to melt the sheath component of the yarn threads 11, 12, 13, 14 constituting the strands 1 and the intersections 2, followed by solidifying, thus obtaining a plastic net, and (5) a step of forming the fishing net using the plastic net.

Systems and methods are provided for designing composite parts. One embodiment is a method for fabricating a composite part. The method includes receiving a design that defines a stacking sequence for a composite charge comprising plies that have different fiber orientations, defining a splice zone within the design, modifying the design by splicing plies in a manner that accommodates ply slippage when the composite charge is formed to a contour, and fabricating a composite part based on the design that was modified.

A method of manufacturing an aircraft window frame, the frame having a first surface that has at least first and second faces extending all around the frame and connected by a curved junction zone, the frame being made of a composite material that includes fibers embedded in a resin matrix. The method includes steps of: assembling fiber layers and at least one reinforcement situated at the level of the junction zone and having first and second peripheral edges; consolidating or polymerizing of the assembly; and removing the frame from the mold. During the step of assembling, a barrier layer is positioned between the reinforcement and the first surface to cover the reinforcement and to form a barrier limiting propagation of resin in the direction of the first surface. A window frame obtained by using that method is provided as well as an aircraft including the frame.

An up-lighting floor mat includes floor matting that defines an upwardly-facing surface and an opposed downwardly-facing surface when supported atop an upwardly-facing support surface, and that is formed from a first flexible material that enables the up-lighting floor mat to be rolled up for transport or storage; and a first elongate up-lighting assembly positioned within a first elongate slot defined through the floor matting to emit light upwardly from the first elongate slot, wherein at least one elongate edge defined by the first up-lighting assembly is bonded to at least one edge of the floor matting that defines the first elongate slot.

Provided is a method for manufacturing a fishing net formed from a plastic net that can be handled by winding or folding although the net has plastic rigidity. The fishing net is manufactured by (1) a step of preparing a multifilament yarn formed by bundling a plurality of core-sheath type composite filaments, in each of which a core component is made of polyethylene terephthalate and a sheath component is made of polyolefin, (2) a step of preparing a yarn thread obtained by paralleling a plurality of the multifilament yarns, (3) a step of twisting or braiding four yarn threads 11, 12, 13, 14 to obtain a net constructed with strands 1 and intersections 2, (4) a step of heat-treating the net under without pressure to melt the sheath component of the yarn threads 11, 12, 13, 14 constituting the strands 1 and the intersections 2, followed by solidifying, thus obtaining a plastic net, and (5) a step of forming the fishing net using the plastic net.

An up-lighting floor mat includes floor matting that defines an upwardly-facing surface and an opposed downwardly-facing surface when supported atop an upwardly-facing support surface, and that is formed from a first flexible material that enables the up-lighting floor mat to be rolled up for transport or storage; and a first elongate up-lighting assembly positioned within a first elongate slot defined through the floor matting to emit light upwardly from the first elongate slot, wherein at least one elongate edge defined by the first up-lighting assembly is bonded to at least one edge of the floor matting that defines the first elongate slot.

A seamless elastic strap with forked structures and a manufacturing method thereof are provided, the elastic strap includes an upper layer fabric strap formed by interweaving an upper layer warp, an upper layer wrapped warp, and an upper layer weft and a lower layer fabric strap formed by interweaving a lower layer warp, a lower layer wrapped warp, and a lower layer weft. By changing the interweaving position of the upper and lower wrapped warps with the upper and lower wefts, a structure consisting of several forking parts and merging parts arranged at intervals on one elastic strap is achieved. It uses the staggered hot-cutting method to make the ends of both ends of the upper and lower fabric straps misaligned. It uses the ultrasonic welding method to form a loop fabric strap. It has the advantage of using adhesive pressing or ultrasonic welding to make seamless marks.