LAMINATED PAPER FOR FABRICATION OF SECURITY DOCUMENTS, WHICH CONTAINS STRENGTHENING STRIPS Russian patent published in 2011 - IPC B32B29/02 

FIELD: textile, paper.

SUBSTANCE: invention refers to paper fabrication for fabrication of bank notes or other security documents and refers to laminated paper for fabrication of security documents, which contains strengthening strips. Laminated paper contains strengthening strips in certain places throughout length and/or width of paper web. Strengthening strips are created by formation of additional fibrous layer on paper surface; at that, specific paper weight in places where additional fibrous layer is formed exceeds specific weight of the main paper field. Additional fibrous layer on paper surface is formed owing to additional grooves made on grid surface of grid filter.

EFFECT: invention proposed simpler and more reliable solution of problem with folding of corners and mechanical damage of edges of bank note or other document, as well as strengthening of the whole paper structure.

8 cl, 1 dwg, 1 tbl, 2 ex