Patent ID: 9371175
Filing Date: 2016-06-21
CPC Classification: A47J,B65D

Claim Text:
1. A capsule defining a chamber for enclosing a mass of soluble and/or extractable food material, for use in a beverage preparation machine, the capsule comprising: capsule side walls; a top membrane comprising a laminate that comprises superimposed layers, the superimposed layers comprising a polypropylene layer, a polyethylene layer, and at least one elastic silicone layer, the laminate is pierceable by a fluid injection member of the beverage preparation machine which is adapted to inject an extraction liquid under pressure inside the chamber; a bottom wall; and an opening member adapted to open the chamber by relative engagement with the bottom wall under the effect of the liquid pressure increase in the chamber during injection of the extraction liquid, the at least one elastic silicone layer having a tensile strength greater than 1 MPa and an elongation at break greater than 100%, such that the top membrane recloses in a leaktight manner after the fluid injection member has been removed therefrom, and lamination in an area of the laminate where the fluid injection member pierces the top membrane has a weaker adhesion relative to other areas of the laminate.