Coffee pad with a relatively large outlet opening for use in a coffee machine

A system comprising:

• a coffee machine for preparing a beverage, the coffee machine comprising:
• a holder comprising at least one beverage exit opening and being arranged for accommodating a first pad comprising two sheets of filtering paper connected to each other at circumferential edges thereof and enclosing an interior space containing roast and ground coffee, and
• a lid for closing the holder,
• the coffee machine constructed to generate an aqueous fluid flow under pressure,
• a second pad, different from the first pad, for use in the coffee machine for preparing a beverage for obtaining at least one part of a single beverage serving, which second pad, for use in the coffee machine, is adapted to receive an aqueous fluid that is supplied under pressure to the second pad so that the fluid is forced through the second pad for obtaining the at least one part of the beverage serving that then exits the second pad, wherein the second pad includes a covering defining an interior space that is filled with a beverage preparation product for preparing the beverage wherein the beverage preparation product includes a product including ground coffee extractable with the aqueous fluid,
• wherein the covering comprises a flexible first sheet and a rigid shell, wherein the first sheet and the shell are connected to each other around their perimeter edges, wherein the shell is equipped with at least one outlet opening, wherein the second pad is further equipped with a second sheet that is positioned on a bottom of the shell, wherein the second sheet is located between the beverage preparation product and the shell and wherein the first sheet and the second sheet each form a filter that allows the aqueous fluid, including water, and the beverage to pass and that forms a barrier for the beverage preparation product so that, when in use the aqueous fluid under pressure is supplied to the first sheet of the second pad the fluid flows through the first sheet to the beverage preparation product so that the beverage is formed which beverage then flows through the second sheet and via the at least one outlet opening leaves the second pad,
• wherein the at least one outlet opening has a diameter of a sufficient size for passing the beverage unrestricted, the second pad in use being accommodated in the holder,
• wherein the lid features at least one fluid inlet opening, which is in fluid connection with a fluid supply member for feeding the fluid flow to the at least one fluid inlet opening so the aqueous fluid is fed under pressure to the first sheet of the second pad and the aqueous fluid is forced through the second pad for preparation of the beverage in the second pad, wherein the beverage leaves the second pad via the second sheet and the outlet opening to then exit the holder through the at least one beverage exit opening,
• wherein the second pad is arranged such that, in use when the second pad is positioned in the holder, a seal is formed between the second pad and the holder to reduce or prevent a flow of the fluid from a top side of the second pad around the second pad to the at least one beverage exit opening of the holder, said seal being a static seal, which provides a sealing engagement between the second pad and the holder under the sole influence of gravity on the second pad, and a dynamic seal, which provides a sealing engagement between the second pad and the holder under the influence of the pressure of the fluid on top of the second pad, wherein the static seal is formed by a contact between a perimeter flange of the second pad, which extends outwardly and downwardly from the second pad and an outer edge of the holder and wherein the dynamic seal is formed between an outer portion of the second pad and the holder at locations positioned at a smaller distance to a center of the second pad than the location of the static seal.