Disclosed herein are sterilized medical coiled tubing and process for producing the same. One process comprises: helically winding a length of medical tubing along a mandrel such that adjacent turns of the medical tubing are in contact with each other at tubing contact points; applying a UV adhesive to the tubing contact points to produce a medical coiled tubing; curing the tubing by applying UV light to the tubing contact points; and removing the medical tubing from the mandrel after the solvent has dried.

Disclosed is an edge wrapping method for a composite board, the top board of the composite board surrounds the bottom board of the composite board, a part or all of the side of the top board is disposed with a connecting portion extending beyond the bottom board and extending outwardly; the adjacent portion of the connecting portion and the bottom board are heated, and then the connecting portion is folded toward the inner side of the composite board and the connecting portion is welded to the side of the bottom board. The connecting portion and the bottom board are heated, and the root portion of the connecting portion near one end of the bottom board and the position of the bottom board close to the connecting portion are heated to a molten state, and then, the connecting portion is folded, and the connecting portion and the bottom board are welded together, the production efficiency of the present invention is high, the automatic production is realized, and the product qualification rate is effectively improved.

Disclosed is an edge wrapping method for a composite board, the top board of the composite board surrounds the bottom board of the composite board, a part or all of the side of the top board is disposed with a connecting portion extending beyond the bottom board and extending outwardly; the adjacent portion of the connecting portion and the bottom board are heated, and then the connecting portion is folded toward the inner side of the composite board and the connecting portion is welded to the side of the bottom board. The connecting portion and the bottom board are heated, and the root portion of the connecting portion near one end of the bottom board and the position of the bottom board close to the connecting portion are heated to a molten state, and then, the connecting portion is folded, and the connecting portion and the bottom board are welded together, the production efficiency of the present invention is high, the automatic production is realized, and the product qualification rate is effectively improved.

The teachings herein relate to tubes formed of a composite material and improved methods for forming the tubes. The composite material includes metallic layers and a core layer interposed between the metallic layers. The core layer preferably reduce the transmission of sound and or heat between the two metallic layers.

Methods and devices of fabricating a stringer for a vehicle. The stringer can be constructed from two charges that are formed together into the stringer. During fabrication, the charges are placed over support members with the ends of each charge extending over a die cavity. The charges are secured and a punch die forces the first ends into the die cavity forming blades of the stringer. The charges are secured thus tensioning the charges during the punch process.

The present invention provides constructs including a tubular biodegradable polyglycolic acid scaffold, wherein the scaffold may be coated with extracellular matrix proteins and substantially acellular. The constructs can be utilized as an arteriovenous graft, a coronary graft, a peripheral artery bypass conduit, or a urinary conduit. The present invention also provides methods of producing such constructs.

The present invention provides constructs including a tubular biodegradable polyglycolic acid scaffold, wherein the scaffold may be coated with extracellular matrix proteins and substantially acellular. The constructs can be utilized as an arteriovenous graft, a coronary graft, a peripheral artery bypass conduit, or a urinary conduit. The present invention also provides methods of producing such constructs.

A composite component adapted to be formed into an aerofoil, a method of forming an aerofoil, an aerofoil, an aircraft wing and a forming jig. The method involves forming a flat layup sheet of plies (1) to be folded about a central leading edge region (6) of the layup into an aerofoil shape, applying to the flat layup (1) one or more layups of plies (9, 10) shaped as spars, partially curing the layup (1) with the spars attached, folding the resulting partially cured composite component (30) about the leading edge region (6) in a forming jig (19) so that opposing edges (4, 5) of the sheet meet as a trailing edge (36) of the aerofoil (35), clamping the jig (19) closed, and curing the composite component (30) and adhesive in the forming jig (19) to form the finished aerofoil (35).

A composite component adapted to be formed into an aerofoil, a method of forming an aerofoil, an aerofoil, an aircraft wing and a forming jig. The method involves forming a flat layup sheet of plies (1) to be folded about a central leading edge region (6) of the layup into an aerofoil shape, applying to the flat layup (1) one or more layups of plies (9, 10) shaped as spars, partially curing the layup (1) with the spars attached, folding the resulting partially cured composite component (30) about the leading edge region (6) in a forming jig (19) so that opposing edges (4, 5) of the sheet meet as a trailing edge (36) of the aerofoil (35), clamping the jig (19) closed, and curing the composite component (30) and adhesive in the forming jig (19) to form the finished aerofoil (35).

Described are methods and systems for manufacturing curved composite stringers. Such composite stringers may have in-plane and/or out-of-plane bends, which are formed while shaping composite charges. Specifically, a composite charge is shaped using a pallet, comprising a plurality of independent pallet portions, rotatably coupled to each other. A hat portion is formed when a part of this charge is conformed to a cavity in the pallet. The pallet portions are rotated relative to each other while forming the hat portion and/or when the hat portion already conforms to the cavity. In some examples, the die is bent together with the charge, when the pallet portions are rotated. This rotation produces one or more of in-plane and/or out-of-plane bends. In some examples, flange portions of the composite charge are positioned in a temporary orientation, e.g., to enable bending of the charge and reduce wrinkles.