A manufacturing method for a joined body, includes: bringing a first member and a second member into contact with each other, at least one of the first member and the second member being made of thermoplastic resin, and the second member having a recessed portion on a joining surface to be joined to the first member; and welding the first member and the second member together, including welding a contact portion of the first member and the second member by melting the thermoplastic resin by frictional heat generated in the contact portion by relative movement of the first member and the second member, in a state in which the first member and the second member are in contact with each other.

A trench-shoring sheeting panel includes a rectangular-shaped polyethylene sheet having opposing primary surfaces and four corners, a planar support structure embedded in the polyethylene sheet, a plurality of hand hold apertures formed in the polyethylene sheet, a plurality of corner holes positioned adjacent to the four corners, and a plurality of protrusions positioned on at least one of the primary surfaces.

A resin-rich peel ply that does not leave behind residual fibers after peeling and can work well with different resin-based composite substrates. The resin-rich peel ply is composed of a woven fabric impregnated with a resin matrix different from the resin matrix of the composite substrate. The peel ply is designed such that, upon manual removal of the peel ply from the composite substrate's surface, a thin film of the peel ply resin remains on the composite substrate's surface to create a bondable surface capable of bonding with another composite substrate, but no fibrous material from the woven fabric remains on the same surface.

A resin-rich peel ply that does not leave behind residual fibers after peeling and can work well with different resin-based composite substrates. The resin-rich peel ply is composed of a woven fabric impregnated with a resin matrix different from the resin matrix of the composite substrate. The peel ply is designed such that, upon manual removal of the peel ply from the composite substrate's surface, a thin film of the peel ply resin remains on the composite substrate's surface to create a bondable surface capable of bonding with another composite substrate, but no fibrous material from the woven fabric remains on the same surface.

A method for manufacturing a joined body according to an embodiment of the present disclosure is a method for manufacturing a joined body in which composite materials in which fibers are impregnated with resins are heated and joined to each other. The method includes: a step of aligning the composite material with each of a plurality of molding dies, heating the molding dies, and semi-curing the resins of the composite materials; and a step of joining the composite materials to each other by combining and heating the molding dies with which the composite materials are aligned after semi-curing the resins of the composite materials. The molding dies used when semi-curing the resins of the composite materials and the molding dies used when joining the composite materials to each other are the same.

A method for manufacturing a joined body according to an embodiment of the present disclosure is a method for manufacturing a joined body in which composite materials in which fibers are impregnated with resins are heated and joined to each other. The method includes: a step of aligning the composite material with each of a plurality of molding dies, heating the molding dies, and semi-curing the resins of the composite materials; and a step of joining the composite materials to each other by combining and heating the molding dies with which the composite materials are aligned after semi-curing the resins of the composite materials. The molding dies used when semi-curing the resins of the composite materials and the molding dies used when joining the composite materials to each other are the same.

Provided is a composite material that is useful as a reinforcement, and the like. The composite material at least includes a woven fabric which contains weaving yarns being fibers each having a tensile elastic modulus of 20 GPa or higher, and a thermoplastic elastomer resin. The thermoplastic elastomer resin penetrates through openings of the woven fabric from one surface of the woven fabric, and is exposed at another surface.

A joined body includes: a first compact that includes a fiber-reinforced resin and a fiber exposure portion where a fiber of the fiber-reinforced resin is exposed, the fiber exposure portion being formed on at least a part of a surface of the first compact; a second compact that is joined to the first compact at the fiber exposure portion of the first compact; and a joint portion that is interposed between the fiber exposure portion of the first compact and the second compact.

A joined body includes: a first compact that includes a fiber-reinforced resin and a fiber exposure portion where a fiber of the fiber-reinforced resin is exposed, the fiber exposure portion being formed on at least a part of a surface of the first compact; a second compact that is joined to the first compact at the fiber exposure portion of the first compact; and a joint portion that is interposed between the fiber exposure portion of the first compact and the second compact.

A hollow fiber membrane is formed by embedding a braid having a spiral open weave of monofilaments only, to avoid a whiskering problem common in prior art multifilament braid-supported tubular membranes. The open weave is characterized by contiguous, circumferential, rhomboid-shaped areas of polymer film separated by monofilaments. When the braid is supported on a plasticized PVA cable it can be infiltrated with membrane polymer which, when coagulated embeds the braid positioning it around the lumen. The spiral weave, free of any circumferentially constricting monofilament, when embedded in film, allows the membrane to be biaxially distensible. In other words, the membrane has give not only in the axial or longitudinal direction but also in the radial direction. Give in the radial direction permits soiled membranes to be backwashed under higher pressure than in a comparable braid which is not radially distensible.