Patent ID: 9730544
Date: 2017-08-15
CPC Classifications: A47J,B65B,B65D

Claim:
1. A method for producing a portion capsule for a coffee machine, the capsule having a capsule wall, and having the form of a cube or cuboid, with the exception of a laterally protruding peripheral edge, the method comprising the steps of: producing a five-sided polyhedral basic body that is open on a sixth side, the body having a collar running around an edge of the basic body, filling the basic body with an extraction material or extract; fastening a cover along the edge of the body such that the interior space produced is completely enclosed, wherein the cover is fastened to the basic body by ultrasonic welding, wherein during the ultrasonic welding, the collar is at the same time partially detached from the basic body by the effect of the ultrasound, or wherein subsequently to the ultrasonic welding the collar is detached partially from the basic body, so that the laterally protruding peripheral edge, which is a portion of the collar adjacent the basic body, remains attached to the basic body.