Paper filter bag for coffee - has raised honeycomb pattern on inside with ridges flowing in cross-flow direction and reinforced

摘要

The paper filter-bag (1) for coffee has raised patterns (6) on the sides and which point inwards. The raised parts (6) may be ridges running across the main flow direction, and form a regular pattern such as a honeycomb. The protuberances (6) are fibre-reinforced and are especially between 0.,05 and 10 millimetres high. The spaces between the protuberances (6) are especially between 25 cu mm and 1 cu cm. USE/ADVANTAGE - The coffee-filter bag enables the coffee to flow more easily through and gives a better aroma.