FIELD: process engineering.
SUBSTANCE: invention relates to polymer packages for food products, particularly to sandwiched films, their production and to device to this end. Claimed sandwiched film has at least one heat-sealing seam of heat-sealing material. Said seam is coupled, at least, indirectly with first ply as an outer ply and features lower fusion point than that of said first ply. In compliance with claimed invention, second ply as inner ply is arranged on opposite side of heat-sealing ply and coupled therewith that features higher fusion point than that of heat-sealing ply and which has at least one through hole overlapped by heat-sealing play.
EFFECT: fabrication of perfected film for food products with the help of polymers other than PE.
10 cl, 5 dwg
