METHODS OF FORMING SOLID-WOVEN MULTILAYER SHELLS OF VARIABLE THICKNESS (EMBODIMENTS) Russian patent published in 2022 - IPC D03D37/00 

FIELD: textile.

SUBSTANCE: inventions relate to textile industry and are intended for use as reinforcing elements in articles made from composite materials. Three methods of forming a one-piece multi-layer shell of variable thickness are disclosed. They are based on a method of forming a solid-woven multilayer shell of variable thickness, which consists in its production on a forming mandrel installed in a circular weaving machine by interweaving of systems of warp threads, which form axial reinforcement, systems of dressing threads, forming radial reinforcement, and weft threads, forming ring reinforcement, with alternation of layers of weft threads and warp threads. According to one of the embodiments, the woven shell thickness is increased by dividing the axial reinforcement warp systems into parts and adding additional weft layers, and subsequent reduction of its thickness - by connection of separated parts of warp threads systems and exclusion of additionally introduced weft layers, according to another embodiment, reduction of thickness of woven shell is carried out by connection of warp threads systems of adjacent layers and exclusion of weft layers between connected systems, and subsequent increase of its thickness - by separation of connected systems of warp threads and introduction of weft layers between previously connected systems. Third embodiment provides for smooth reduction of thickness of the woven shell, with spacing along its length.

EFFECT: inventions make it possible to simplify the method of forming all-woven casings of variable thickness and to endow them and articles made on their basis from composite materials with high consumer properties, in particular high strength.

3 cl, 4 dwg, 3 ex