Patent ID: 7779884

Claim:
A multi-layer laminating press for laminating essentially planar work pieces ( 20 , 21 ) using pressure and heat, comprising: a plurality of press levels having hot plates ( 10 , 11 , 12 ) arranged over top of each other and movable in reference to each other; a plurality of conveyers ( 30 , 31 , 32 ) revolving around the hot plates ( 10 , 11 , 12 ) each of the conveyors having one upper run ( 30 a , 31 a , 32 a ) and one lower run ( 30 b , 31 b , 32 b ); sealing elements ( 80 , 81 , 82 , 110 , 111 , 112 ) arranged between the hot plates ( 10 , 11 , 12 ) and the conveyers ( 30 , 31 , 32 ) to form a first vacuum chamber between a first hot plate ( 11 ) and a respectively adjacent second hot plate ( 10 ) arranged thereabove in a closed position of the press, and the lower run ( 30 b ) of the second conveyer ( 30 ) of the second hot plate ( 10 ) rests on the upper run ( 31 a ) of the first conveyer ( 31 ) of the first hot plate ( 11 ) and the work piece ( 20 ) to be laminated is arranged between the upper run ( 31 a ) of the first conveyer ( 31 ) and the lower run ( 30 b ) of the second conveyer ( 30 ) inside the first vacuum chamber; and means ( 90 , 91 , 92 , 100 , 101 , 102 ) to at least one of pressurize or evacuate the first vacuum chamber, and wherein the first vacuum chamber is limited by either the first hot plate ( 11 ) and the lower run ( 30 b ) of the second conveyer ( 30 ) or the second hot plate ( 10 ) and the upper run ( 31 a ) of the first conveyer ( 31 ), without the interposition of another membrane as the compression means for laminating the workpiece.