Portion capsule with a three-ply nonwoven fabric

US11084650B2 · kind B2 · utility

Assignee

• K-FEE SYSTEM GMBH · DE

Inventors

• Marc Krüger · Moitzfeld, DE
• Marco Hanisch · Overath, DE
• Günter Empl · Moitzfeld, DE

Key dates

• Filing date: Jun 9, 2016
• Grant date: Aug 10, 2021
• Expiry date: Oct 20, 2037

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B32B2307/732
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

The invention relates to a portion capsule for producing a beverage, having a capsule body with a capsule base and a filling side. A cavity for receiving a pulverulent or liquid beverage substrate is formed between the capsule base and the filling side, and a filter element is arranged between the beverage substrate and the capsule base. The filter element comprises an open-pore felt and/or nonwoven fabric, and the felt and/or nonwoven fabric has a first average pore size in a first region facing the beverage substrate and a second average pore size in a second region facing the capsule base, said first pore size being smaller than the second pore size.