PORTION CAPSULE AND METHOD FOR PRODUCING A PORTION CAPSULE

• US 20110097450A1
• Filed: 10/22/2010
• Published: 04/28/2011
• Est. Priority Date: 10/23/2009
• Status: Abandoned Application

• Current Assignee: K-Fee System GmbH
• Original Assignee: Krüger GmbH & Co. KG
• Inventors: KRÜGER, Marc
• Application Number:
  US12/909,998
• Publication Number:
  US 20110097450A1
• Time in Patent Office: Days
• US Class Current: 426/77
• CPC Class Codes: B65D 85/8061 Filters

Abstract

A portion capsule for producing a beverage is proposed, having a substantially frustoconical or cylindrical base element which has a cavity, and having a membrane which closes off the cavity, with a filter element being arranged within the cavity, the filter element dividing the cavity into a first region for holding a beverage raw material and into a second region for receiving a beverage extract, wherein the filter element is fastened to the base element by means of at least one ultrasonic welded joint.

Claims

1. Portion capsule for producing a beverage, having a substantially frustoconical or cylindrical base element which has a cavity, and having a membrane which closes off the cavity, with a filter element being arranged within the cavity, the filter element dividing the cavity into a first region for holding a beverage raw material and into a second region for holding a beverage extract, characterized in that the filter element is fastened to the base element by means of at least one ultrasonic welded joint.

2. Portion capsule according to claim 1, characterized in that the filter element is connected to a portion capsule wall and/or to a portion capsule bottom by means of the ultrasonic welded joint.

3. Portion capsule according to claim 1, characterized in that the filter element has a border region, with passage openings being formed in the border region.

4. Portion capsule according to claim 3, characterized in that the passage openings are each of slot-shaped design.

5. Portion capsule according to claim 3, characterized in that the filter element is of frustoconical design, the filter element having a bottom region substantially parallel to the membrane, and the border region comprising a wall region which encircles the bottom region, with filter openings being formed in the bottom region.

6. Portion capsule according to claim 4, characterized in that the passage openings which are of slot-shaped design extend substantially perpendicularly to the circumferential direction of the border region and/or at least partially extend from the bottom region in the direction of the portion capsule bottom.

7. Portion capsule according to claim 1, characterized in that the sum of the cross sections of the filter openings comprises at least 30 percent of the total surface of the bottom region.

8. Method for producing a portion capsule according to claim 1, characterized in that, in a first step, the base element is provided, in that, in a second step, the filter element is arranged in the base element, and in that, in a third step, the filter element is connected to the base element, with an ultrasonic welding process being used in the third step.

9. Method according to claim 8, characterized in that, in a fourth step, a beverage raw material is poured into the first region, and in that, in a fifth step, the membrane is arranged on the base element.

10. Portion capsule according to claim 2, characterized in that the filter element has a border region, with passage openings being formed in the border region.

11. Portion capsule according to claim 4, characterized in that the filter element is of frustoconical design, the filter element having a bottom region substantially parallel to the membrane, and the border region comprising a wall region which encircles the bottom region, with filter openings being formed in the bottom region.

12. Portion capsule according to claim 11, characterized in that the passage openings which are of slot-shaped design extend substantially perpendicularly to the circumferential direction of the border region and/or at least partially extend from the bottom region in the direction of the portion capsule bottom.

13. Portion capsule according to claim 5, characterized in that the passage openings which are of slot-shaped design extend substantially perpendicularly to the circumferential direction of the border region and/or at least partially extend from the bottom region in the direction of the portion capsule bottom.

14. Portion capsule according to claim 1, characterized in that the sum of the cross sections of the filter openings comprises at least 50 percent of the total surface of the bottom region.

15. Portion capsule according to claim 1, characterized in that the sum of the cross sections of the filter openings comprises at least 75 percent of the total surface of the bottom region.

16. Portion capsule according to claim 1, characterized in that the sum of the cross sections of the filter openings comprises at least 80 percent of the total surface of the bottom region.

17. Portion capsule for producing a beverage, having a substantially frustoconical or cylindrical base element which has a cavity, and having a membrane which closes off the cavity, with a filter element being arranged within the cavity, the filter element dividing the cavity into a first region for holding a beverage raw material and into a second region for holding a beverage extract, characterized in that the filter element has a border region, with passage openings being formed in the border region.

18. Portion capsule according to claim 17, characterized in that the passage openings are each of slot-shaped design.