SHEET PACKING MATERIAL FOR MANUFACTURING OF SEALED PACKAGES OF LIQUID FOOD PRODUCTS Russian patent published in 2018 - IPC B65D5/74 

FIELD: packaging industry.

SUBSTANCE: packaging material (M) contains one base layer (11) to ensure rigidity, series of laminated layers (12) covering both sides of base layer (11), and removable area (10, 10', 10'',10''', 10'''', 10'''''), during the use it can be partially separated from the rest of packaging material (M) along at least one arched cutting line (20, 20''''') and bend over fold zone (21, 81) between the opposite ends of cutting (20, 20''''') line to release drain hole (9), from which the food product is poured from package (1). Said removable area (10, 10', 10'', 10''', 10'''', 10''''') contains central area (25), made of a whole packaging material, and which during the use in any case remains attached to the rest of packaging material (M) due to permanent partition (26) formed by fold zone (21, 81), and peripheral area (27, 27', 27'', 27''', 27'''', 27''''') for interaction during cutting, passing around a part of central area (25), containing cutting (20, 20''''') line and comprising at least one pre-laminated hole (30, 30', 30'', 30''', 30a'''', 30b'''', 30c'''', 30'''''), which is formed by through slot (31, 31', 31'', 31''', 31a'''', 31b'''', 31c'''', 31'''''), formed at least in base layer (11), and closed with one or more laminated layers (12).

EFFECT: sheet packaging material (M) for the manufacture of sealed packaging (1) for liquid food product is proposed.

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