PORTION CAPSULE FOR PREPARATION OF BREWED PRODUCT AND METHOD OF ITS MANUFACTURE Russian patent published in 2018 - IPC B65B29/02 B65D85/804 

FIELD: package and storage.

SUBSTANCE: method comprises providing a main body of plastic with a lower region, a circumferential side wall and a circumferential edge of the main body adjacent to the circumferential side wall, the housing in the region of the bead having a substantially rectangular cross section. Method further comprises providing a deep-drawn plastic lid for closing the capsule with an outwardly directed bulge adjacent the circumferential rim of the lid, and in size, the circumferential rim of the lid corresponds to the rim of the main body. Then, the body is filled with an extractable material, a cover is mounted on the housing so that the rim of the lid lies on the rim of the main body, and attach the rim of the lid to the edge of the main body by ultrasonic welding. In this case, the lid has an energy directing device that focuses ultrasonic energy during ultrasonic welding, and the lid has at least one circumferential groove extending on the outside in the region of the lid of the lid. Invention is also a batch capsule made in accordance with the above-described method.

EFFECT: group of inventions provides increased reliability and simplification of manufacturing.

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