Multilayer film for packaging and method of manufacture thereof
AssigneeGraphitene Limited
InventorsStefano BORINI, Malik QASIM, Simon BROUGHTON
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Abstract
Disclosed is a multilayer film for packaging. The multilayer film comprises a layer of ink and an adjacent layer of substrate. The layer of ink includes functionalised graphene and a material selected from cellulose, polylactic acid and a polyhydroxyalkanoate.
Claims17
A multilayer film (100) for packaging comprising:
- a layer of ink (102) comprising functionalised graphene and a material selected from cellulose, polylactic acid and a polyhydroxyalkanoate;
- and
- an adjacent layer of substrate (104).
A multilayer film (100, 200, 300) of any of the preceding claims, characterized in that the functionalised graphene includes at least one of a functional group:
- aliphatic ester, aromatic ester, amine, epoxide, carboxyl, hydroxyl, siloxanes, silanes.
A multilayer film of any of the preceding claims, characterized in that concentration of the material selected from cellulose, polylactic acid and a polyhydroxyalkanoate mixed with the functionalised graphene may be in a range of 0.5 to 20 weight %.
A multilayer film of any of the preceding claims, characterized in that the substrate (104, 202) is polyethylene terephthalate.
A method for manufacturing a multilayer film (100) for packaging, the method comprising:
- providing functionalised graphene;
- mixing the functionalised graphene with a material selected from cellulose, polylactic acid and a polyhydroxyalkanoate;
- dispersing the mixture of the functionalised graphene and the material in a solvent to form an ink (102);
- and
- depositing a layer of ink (102) on a layer of substrate (104) to form the multilayer film (100).
Dependencies are inferred from the claim text.