Cartridge for coffee and soluble products in general

摘要

A cartridge (1) for coffee or soluble products for the production of a beverage in an extraction apparatus by pressurized water, includes a container body (10), hermetically closed at the opposite bases thereof (30, 20), respectively for the water input and for the beverage output from the cartridge, wherein the body (10) is of a hollow tubular type and the opposite bases (30, 20) are membranes including a barrier film of aluminum (32, 22) and at least one plastic film (33, 23), and at least one incision (40, 41) provided in each of the plastic films (33, 23).

主权项

1. A cartridge (1) for coffee or soluble products for the production of a beverage on an extraction apparatus by means of pressurised water or other extraction fluid, comprising:
a container body (10), hermetically closed at opposite bases thereof (30, 20), respectively, for water input and for beverage output from the cartridge, wherein said body (10) is of a hollow tubular type, and said opposite bases (30, 20) are membranes comprising a non-elastic barrier film (32, 22), an elastic plastic film (33, 23), and an adhesive provided therebetween, wherein on at least one of said membranes (20, 30), a plurality of small incisions (40, 41), that facilitate a breakage of the corresponding membrane (30, 20) at a predetermined pressure of the fluid in the apparatus for the extraction of the beverage, are provided on said plastic film (23, 33) at small areas of said plastic film that are free of the adhesive between the plastic film (23, 33) and the barrier film (22, 32), such to cause, following an increase in the pressure of the fluid, formation of small apertures at said small areas free of the adhesive and the tearing of only said small areas free of the adhesive, preventing the tearing from propagating to areas where said plastic film (23,33) and said barrier film (22,32) of said membrane (20,30) are glued one to the other by the adhesive.