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US 2017/0246836 A1Published application
Recyclable material
AssigneeGimsa S.R.L.
InventorsStefano GIUSTI, Martina GIUSTI
Life of this patent
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Abstract
A laminate composite material (1), suitable for the packaging of food products and having a multilayer structure comprising: a first outer layer (21) of paper or plastic film; an inner layer (22) of adhesive; and an intermediate layer (23) interposed between the first and the second layer and made of sodium silicate (Na2O×SiO2).
Claims21
A laminate composite material suitable for the packaging of food products, which laminate composite material has a multilayer structure which includes:
- a first outer layer;
- a second inner layer,
- wherein said first outer layer and said second inner layer or a third intermediate layer interposed therebetween, comprise exclusively or in a predominant percentage a water-soluble material, so that two or more of said first outer layer, second inner layer and third intermediate layer are separable, after use, by means of a bath of water or with prevalence of water.
A method for the manufacture of a composite material laminate suitable for the packaging of food products, which method comprises the steps of:
- providing an outer layer and an intermediate layer, the intermediate layer being made of a water-soluble material, said outer and intermediate layers being adhered one onto the other;
- providing a second inner layer of adhesive;
- drying said second inner layer, and
- joining said second inner layer to an assembly formed by said outer layer and intermediate layer,
- wherein two or more of said outer layer, intermediate layer and second inner layer are separable, after use, by means of a bath of water or with prevalence of water.
2 more elements
Dependencies are inferred from the claim text.