Patent ID: 11913173
Assignee: THE PROCTER & GAMBLE COMPANY
Field: Surface technology, coating (Chemistry)
Classification: CPC D  B  Y | IPC D

Claim 0:
1. A biodegradable and recyclable barrier paper laminate comprising:
a) a biodegradable and recyclable paper layer having an outer surface and an inner surface;
b) a first biodegradable polymeric layer having an outer surface and an inner surface, said outer surface disposed on said inner surface of said biodegradable and recyclable paper layer;
c) a first biodegradable primer layer having an outer surface and an inner surface, said outer surface disposed on said inner surface of said biodegradable polymeric layer;
d) An inorganic barrier layer having an outer surface and an inner surface, said outer surface disposed on said inner surface of said biodegradable primer layer; wherein the inorganic barrier layer comprises at least one of aluminum, aluminum oxide or silicon oxide;
e) a second biodegradable primer layer having an outer surface and an inner surface, said inner surface disposed on said inner surface of said inorganic barrier layer;
f) a second biodegradable polymeric layer having an outer surface and an inner surface, said inner surface disposed on said outer surface of said biodegradable primer layer and which acts as a heat seal layer;
wherein the biodegradable and recyclable barrier paper laminate is recyclable and exhibits a recyclable percentage of at least 50 percent, as determined by test method PTS-RH:021/97 (Draft October 2019); and
wherein the biodegradable and recyclable barrier paper laminate has at least 60% biodegradation within 60 days in the OECD 301B test.