METHOD OF MANUFACTURE OF AN ITEM OF THE TUBULAR FORM WITH A CONE-SHAPED SECTION AND AN ITEM OF THE TUBULAR FORM WITH A CONE-SHAPED SECTION MADE IN THE FORM OF A SHELL OF A STRUCTURE OR A CONSTRUCTION Russian patent published in 2004 - IPC

FIELD: production of items of a tubular form of different purposes, that have at least one cone-shaped or a truncated cone-shaped section.

SUBSTANCE: the invention is dealt with the field of production of items of tubular form of different purposes having, at least one cone-shaped or a truncated cone-shaped section, at production of which they use the glass-fabric and a binding substance as a reinforcing element. The technical result is an increased reliability and duration of service life of the items of the tubular form with a cone-shaped section. An item is made of the tubular form with a cone-shaped section, at which on a conical section of swage, preferably metal, they apply a protective layer formed by deposition of a suspension, mainly - fluoroplastic. stretching an elastic technical, preferably caproic fabric and fluoroplastic fabric, on which a rubber stock, for example, the rubber stock on the base of ethylene-propylene rubber is applied without its warming up, swaging it by sectors to the form of lobes, preferably, superimposed or formed by cuts on the hardened glass-fabric, and with a strain of 5-45 kg and with exposure of no less than 15 minutes a multilayer technological jacket in the form of the woven ribbons and applied atop of it unidirectional glass band, preferably in width of no less than 5 mm. A rubber stock is vulcanized in the surface layer at the temperature of 90 °-160°С for no less than 50 minutes up to the surface solidification up to of no less than 50 arbitrary units according to Shore hardness, then the lobes and tabs and technological jacket made of the woven band and the glass ribbon are removed and they apply the polymer-containing binding composition on its surface preferably by two layers and with a time interval of no less than 30 minutes between the layers application with formation of a gas-absorbing and - or a gas-insulating layer, on which they are winding a layer by a layer, preferably 10-90 layers with a decrease of quantity of the layers in compliance with an increase of a diameter of the conical section of the swage. They are winding the constructional, mainly a fibrous or a fiber-containing material in the form of an impregnated with the binding substance the glass and-or carbon, and-or organoplastic and after solidification the item is taken out from the swage. An item of the tubular form with a cone-shaped section is produced by the method preferably in the form of a shell of a structure or a construction, containing an inner layer made out of rubber or a rubber-like material, mainly from an ethylene-propylene rubber and preferably of 10-90 layers formed by winding on the conical part of the swage of the constructional, mainly a fibrous or a fiber-containing material in the form of a glass and-or carbon, and-or organoplastic linked by a polymer-containing binding substance. At that between the inner layer and at least the first layer of the constructional material there is a barrier gas-absorbing and - or gas-insulating layer for protection of the constructional material in the process of its heat treatment and the items solidification.

EFFECT: an increased reliability and duration of service life of the items of the tubular form with a cone-shaped section.

5 cl, 1 dwg