MULTILAYER FLAT OR SLEEVE OR FILM FOR FOOD PRODUCTS Russian patent published in 2011 - IPC B32B27/06 B32B27/08 B32B27/32 B32B27/34 B32B27/36 B29C47/00 

FIELD: process engineering.

SUBSTANCE: invention relates to film packaged of food products. Film is produced by blowing and is stretched along two axes in three-bubble process. Multilayer film includes at least nine layers. Note here that said layers contain: first outer layer - material selected from group consisting of poly(ethylene terephthalate) (PET), polyamide (PA), modified polyamide (MXD6), polystyrene (PS), poly(methyl methacrylate) (PMMA), polycarbonate (PC), cycloolefin copolymer (COC), polypropylene (PP) and high-density polythylene (HDPE) or mixes of COC, PP or HDPE with polyolefin (PO). Second layer is adhesion intensifier; third layer is polyolefin, preferably, polyethylene; fourth layer is adhesion intensifier; fifth layer is polyamide and, not obligatorily, EVOH, PVA or MXD6; sixth layer is polymer - an oxygen barrier selected from copolymer of ethylene and vinyl alcohol (EVOH), MXD6 and PVA (polyvinyl alcohol), and, not obligatorily, polyamide; seventh layer is polyamide and, not obligatorily, EVOH, PVA or MXD6; eighth layer is adhesion intensifier, and ninth layer is polyolefin, preferably, polyethylene.

EFFECT: perfected package.

13 cl