PLASTIC PACKAGING SUITABLE FOR RECYCLING Russian patent published in 2021 - IPC B32B27/08 B32B27/32 B32B7/12 

FIELD: recycling.

SUBSTANCE: invention relates to packaging recyclable. The packaging contains an outer layer, an inner layer, a barrier layer located between the outer layer and the inner layer, the first tie layer and the second tie layer. The outer layer consists of the first high density polyethylene (HDPE) and includes two or more different first HDPEs. The inner layer contains the second HDPE. The first tie layer is located between the outer layer and the barrier layer. The second tie layer is located between the inner layer and the barrier layer. Additionally, the packaging may contain a sealant layer located on the opposite side of the inner layer from the second tie layer. The sealing layer contains LLDPE with density of 0.90 to 0.95 g/cm³ and a melt flow rate of less than 1 g/10 min. The outer layer may contain a compatibilizer in an amount of 5 to 20 wt. %. The compatibility enhancer is characterized by a density of 0.85 to 0.90 g/cm³.

EFFECT: provided is possibility of recycling packaging.

18 cl, 2 dwg, 2 tbl, 7 ex