Beverage preparation capsule and method for beverage preparation

Abstract

A beverage preparation capsule (800) is provided comprising a hollow body adapted to contain beverage preparation ingredients, the hollow body having a top end for receiving liquid into the hollow body, a bottom end for dispensing a beverage from the hollow body , and at least one side wall (813) between a top end and a bottom end, the bottom end being in fluid communication with the top end; and the hollow body comprising a filter material (830) having a Variable porosity of at least one dimension of the surface area, wherein the filter material (830) is less porous closer to the top or inlet of the hollow body and more porous closer to the bottom or outlet of the hollow body, or wherein the filter material There may be fewer pores closer to the side walls of the hollow body and more pores closer to the center of the filter material, or a combination of both. The beverage preparation capsule may be used with a beverage preparation device in a method of preparing a beverage, in particular ground coffee or leaf tea.

Description

technical field [0001] The present invention relates to beverage preparation capsules. Background technique [0002] A number of beverage making systems are known in which a single-serve beverage is made by inserting a capsule containing a granular beverage making ingredient, such as ground coffee, into a beverage making station of a beverage making device. The device then injects water into the capsule, wherein the beverage making ingredients are dissolved or infused in the water to form the beverage. The beverage flows out of the capsule through a suitable outlet, which may simply be an opening or perforation in the capsule, or it may comprise an outlet tube piercing the capsule's outlet area. The capsule may comprise a filter to prevent solid components such as coffee grounds from flowing out of the capsule. Beverage making systems of this conventional type are described, for example, in WO 94 / 01344, EP-A-0512468 and EP-A-0468079 (both Nestle), US Patent No. 5,840,189 (...

AI Technical Summary

Problems solved by technology

Another difficulty that can arise is excessive system back pressure caused by blocking or partially blocking water flow in areas where the particulate constituents are more dense or tightly packed, such as in the bottom area of ​​the filter

[0007] All of the above issues can lead to inconsistent vending performance and poor beverage taste

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