METHOD OF MANUFACTURE OF AN ITEM OF THE TUBULAR FORM AND AN ITEM OF THE TUBULAR FORM 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.

SUBSTANCE: the invention is dealt with a the field of items of a tubular form of different purposes at manufacturing of which a glass fabric and a binder are used as reinforcing elements. The technical result is an increased reliability and duration of service life of the items of the tubular form. The method of manufacture of a tubular form item provides for placing of the protective layers of a fluoroplastic film on a swage, then - 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 with a strain of 5-45 kg and with exposure of no less than 15 minutes by a multilayer technological jacket in the form of a woven ribbon with the unidirectional glass ribbon of at least 5 mm width applied atop of it. 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 of no less than 50 arbitrary units according to Shore hardness. After that the technological jacket made out of woven ribbons and glass ribbons is removed and they apply a polymer-containing binding composition on its surface with formation of a gas-absorbing and - or a gas-insulating layer, on which they are winding a layer by a layer, preferably 8-100 layers of constructional, mainly a fibrous or a fiber-containing material in the form of a glass and-or carbon, and-or organoplastic. Then the item is taken out from the swage. The item of the tubular form made by the method contains an inner layer from rubber or a rubber-like material, mainly from an ethylene-propylene rubber and preferably of 8-100 layers formed by winding on 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. 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.

4 cl, 1 dwg