METHOD OF LAMINATED PACKING MATERIAL PRODUCTION AND PACKING CONTAINERS FORMED OF ABOVE PACKING MATERIAL Russian patent published in 2004 - IPC

Abstract RU 2236943 C2

FIELD: packing equipment, particularly of laminated packing materials.

SUBSTANCE: method for producing packing material including core layer made of paper or cardboard and gas-barrier layer applied on one core layer side involves applying liquid gas-barrier composition including polymer dispersion or polymer solution on at least one side of carrier layer and drying gas-barrier coating by heating thereof up to the first drying temperature for disperser or solvent removal; connecting carrier layer with gas-barrier coating to one side of core layer and hardening thereof by heating up to the second temperature. The second temperature exceeds the first temperature. The ready sheet or web material is used for packing container production by folding thereof along fold lines.

EFFECT: improved gas impermeability, elimination of excessive moisture absorption by core layer and prevention of crack formation in coated core layer during drying thereof.

18 cl, 4 dwg

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RU 2 236 943 C2

Authors

Berlin Mikaehl'

Bentmar Mats

Flemmer-Karlsson Katarina

Dates

2004-09-27Published

2000-08-30Filed