FILM, SHEET OF THE LAMINATED MATERIAL AND THE METHODS OF THEIR MANUFACTURE Russian patent published in 2008 - IPC B32B37/00 

FIELD: chemical industry; other industries; methods of manufacture of the film, sheet made out of laminated material.

SUBSTANCE: invention is intended for development of the methods of manufacture of the microporous laminated material. The material contains the first layer of the film and the second layer. The first layer contains the pores initiator and is connected to the second layer for formation of the sheet the laminate material. The sheet of the laminate material is drawn down using at least one crisscross CD and at least one block of drawing MDO. Invention also presents the method of manufacture of the microporous film, including extrusion of the thermoplastic film consisting of polymer, which contains the pores initiator. The technical result of the invention is production of the material with the exclusive air permeability and properties of the barrier layer to the liquid.

EFFECT: invention ensures production of the material with the exclusive air permeability and properties of the barrier layer to the liquid.

23 cl, 10 dwg, 3 tbl, 3 ex