Patent ID: 8878051

Claim:
A method for producing elements that comprise at least first and second flat components ( 7 ), which are arranged parallel to one another in the element and at a distance from one another, whereby space between the flat components ( 7 ) is limited by a bead ( 8 ) that runs all around and whereby pressure in the space between the flat components ( 7 ) is reduced relative to ambient pressure, said method comprising the steps of: application of a bead ( 8 ) along a periphery of a first of said flat components ( 7 ); providing spacers ( 25 ) having a height, measured normal to a plane of the first flat component ( 7 ), greater than a thickness of the bead ( 8 ); putting a second of said flat components ( 7 ) in place, wherein the second flat component ( 7 ) is at least in places at a distance from the bead ( 8 ) such that all around openings ( 13 ) for release of air from the space between the first and second flat components ( 7 ) and the bead ( 8 ) are provided in a thus obtained arrangement; introducing the arrangement that comprises the first and second flat components ( 7 ) in a chamber ( 20 ); production of negative pressure in the chamber ( 20 ) and, by removing the air from the space between the first and second flat components ( 7 ) via the all around openings ( 13 ), within the interior space between the first and second flat components ( 7 ); pressing the arrangement in the chamber ( 20 ), with the negative pressure maintained at a pressure that is reduced relative to the ambient pressure, until the second flat component ( 7 ) rests on the bead ( 8 ) and the first flat component ( 7 ) and the second component ( 7 ) are all around sealingly connected via the bead ( 8 ) to form a pressed element; removing negative pressure in the chamber ( 20 ); and taking the pressed element from the chamber ( 20 ).