Multilayer film with different adhesion zones for sealing a capsule for making beverages
OwnerFabio TANSINI, Gino TANSINI +2inventors
InventorsFabio TANSINI, Gino TANSINI, Lorenzo ZAMIRRI, Riccardo ZAMMORI
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Abstract
A multilayer film for sealing a capsule for making beverages has an outer layer with barrier properties, an inner layer intended to come into contact with the capsule the to be sealed, the inner layer being a micro-perforated film provided with a plurality of micro-holes, and an intermediate layer between the outer layer and the inner layer. The intermediate layer is partially peelable from the inner layer. Innovatively, the multilayer film has zones with differing adhesion levels between the layers that lead to an improved perforation opening.
Claims17
1-16. (canceled)
A multilayer film for sealing a capsule for making beverages, comprising:
- an outer layer with gas and/or vapor barrier properties;
- an inner layer intended to come into contact with the capsule to be sealed, the inner layer being a micro-perforated film provided with a plurality of micro-holes;
- and
- an intermediate layer between the outer layer and the inner layer;
- wherein the intermediate layer is partially peelable from the inner layer within a low adhesion delamination zone between the inner layer and the intermediate layer,
- wherein an adhesion in the low adhesion delamination zone has values between 0.25 and 5.00N/15 mm,
- wherein the intermediate layer is permanently joined to the inner layer at least in a high adhesion zone, and
- wherein the adhesion in the high adhesion zone is greater than 5.00 N/15 mm.
A capsule for making beverages, comprising a cup-shaped body, which defines an internal volume wherein there is at least one foodstuff substance to be infused or dissolved, closed by a lid made from a multilayer film comprising:
- an outer layer with gas and/or vapor barrier properties;
- an inner layer intended to come into contact with the capsule to be sealed, the inner layer being a micro-perforated film provided with a plurality of micro-holes;
- and
- an intermediate layer between the outer layer and the inner layer;
- wherein the intermediate layer is partially peelable from the inner layer within a low adhesion delamination zone between the inner layer and the intermediate layer,
- wherein an adhesion in the low adhesion delamination zone has values between 0.25 and 5.00 N/15 mm,
- wherein the intermediate layer is permanently joined to the inner layer at least in a high adhesion zone, and
- wherein the adhesion in the high adhesion zone is greater than 5.00 N/15mm,
- wherein said lid has:
- a high level of adhesion between the inner layer and the intermediate layer at least at an outer periphery corresponding to a welding zone with an edge of the cup-shaped body, and
- a low level of adhesion between the inner layer and the intermediate layer in a central zone.
Dependencies are inferred from the claim text.