METHOD OF ADHESION OF SEPARATE LAYERS OF COMBINATION MATERIAL Russian patent published in 2006 - IPC B65B61/18 

FIELD: food industry.

SUBSTANCE: proposed method of coupling of separate layers of combination material made of plastic-covered cardboard is used in manufacture of packs for drinks and food products. If necessary, combination material can contains metal layer which is heated in zone of opening of future pack. To improved adhesion between separate layers in zone of opening of future pack so that only definite destruction takes place when breaking the wall of pack for draining the content, combination material is compacted by definite power supply and subsequent pressing in zone of opening of future pack. Power can be supplied using high frequency coil, infrared unit or ultrasonic welding set.

EFFECT: improved adhesion of separate layers of combination material.

13 cl, 11 dwg