METHOD OF MANUFACTURE OF THE THERMOINSULATING CYLINDRICAL VACUUM BOARDS AND THE BOARD MANUFACTURED BY THE METHOD Russian patent published in 2007 - IPC B29C53/04 E04B1/14 

FIELD: building industry; motor car industry; other industries; methods of manufacture of the thermoinsulating cylindrical vacuum boards.

SUBSTANCE: the invention is pertaining to the field of manufacture of the thermoinsulating cylindrical vacuum boards, which may be used at manufacture of the household and industrial refrigerators, vending machines, in the field of building industry or motor-car industry. The method of manufacture of the cylindrical vacuum boards includes the stages of manufacture of the planar vacuum board according to any known technological method and bending of the board by means of rolling. At the rolling process the planar vacuum board is gated through between two rollers and the third component with the length equal to the length of these rollers and located in parallel to the indicated two rollers. The vacuum board may have the filler made in the form of the rigid polyurethane foam or in the form of the silica and may have the width less than 20 mm. The invention provides for manufacture of the cylindrical vacuum board according to the indicated method and manufacture of the cylindrical vacuum board with the layer of the adhesive polymeric foam stuck to one surface of the board, and also manufacture of the cylindrical vacuum board with the non-round bent base, which can be formed at the continuous changing of the third component position during the rolling operation. The invention removes the possibility to form fractures in the board sheath on the lines of the board bending and the board bent in compliance with the method has the uniform properties of the thermoinsulation.

EFFECT: the invention removes the possibility to form fractures in the board sheath on the lines of the board bending and the board bent in compliance with the method has the uniform properties of the thermoinsulation.

11 cl, 2 dwg