Patent ID: 11952188
Assignee: LIQUIBOX CORPORATION
Field: Surface technology, coating (Chemistry)
Classification: CPC B | IPC B

Claim 3:
4. A recyclable bag for packaging flowable materials comprising a recyclable metallized barrier co-extruded multi-layer polymeric film and a non-barrier co-extruded multi-layer polymeric film, wherein the metallized barrier co-extruded multi-layer polymeric film comprises five layers:
(i) an inner sealant layer comprising a copolymer or an ethylene/α-olefin interpolymer fraction having a density in the range of 0.894 to 0.924 g/cm3 in an amount of at least about 40-50% by weight or thickness of the total inner sealant layer;
(ii) a first and a second interposed layer comprising a copolymer or an ethylene/α-olefin interpolymer fraction having a density in the range of 0.894 to 0.924 g/cm3 in an amount of at least about 50% by weight or thickness of the first interposed layer, and an optional adhesive or tie resin in an amount effective to improve adhesion of the first and the second interposed layer to at least one other layers in the co-extruded multi-layer polymeric film, wherein the first and the second interposed layer has a total density in the range of from about 0.910 to 0.924 g/cm3;
(iii) a core barrier layer comprising ethylene-vinyl alcohol (EVOH) comprising about 0.1% to about 10% by total weight or thickness of the co-extruded multi-layer polymeric film, wherein the EVOH comprises from about 27-55% ethylene in the EVOH copolymer; and
(iv) an outer sealant metallized layer comprising a polyethylene, or a copolymer or an ethylene/α-olefin interpolymer fraction having a density in the range of 0.894 to 0.935 g/cm3 in an amount of at least about 40-50% by weight or thickness of the total outer metallized sealant layer, and an ethylene vinyl acetate (EVA) resin.