PAPER COMPOSITE MATERIAL FOR MANUFACTURE OF THREE-DIMENSIONAL PACKAGES, METHOD OF MANUFACTURE OF PACKAGES AND PACKAGING Russian patent published in 1999 - IPC

FIELD: manufacture of packages. SUBSTANCE: paper composite material for manufacture of three-dimensional package is made of a layer of plastic paper, having a degree of plasticity at least of 10% in any direction, and at least of one impermeable film, having a plasticity coinciding with the paper plasticity. The method of manufacture of packages of paper composite material consists in the fact that a sheet of the above composite material is turned to the cavity at least of one mould; this sheet is fixed relative to the cavity continuous edge, and then tangential tension of the sheet is accomplished in such a manner that it sticks to the cavity inner surface, and a concave flap is obtained, having the shape of this cavity, which is directed to the subsequent stage of filling and closing. The package, obtained by the above method, consists of a concave flap attached to the edge of which is closing film after filling, or of two concave flaxes joined together along the opposite edges. EFFECT: light packages of any shape are manufactured, low cost, with employment of traditionally commercially reasonable packing material, enhanced simplicity extraction from mould and reclamation after use. 23 cl, 9 dwg