Primary packaging

A primary packaging for a liquid comprising:

• an at least partially collapsible container, and
• a connector element for connection of the primary packaging to a withdrawal device,
• wherein the connector element has at least one connector channel which is in fluid communication with an interior space of the at least partially collapsible container,
• wherein the connector element has at least one sealing bead formed as a comb shaped protuberance along a periphery of the connector element, wherein the comb shaped protuberance includes prongs directed toward the interior space of the at least partially collapsible container,
• wherein the at least one connector channel, formed on the connector element, is, in a direction of a mouth attachment, formed as a narrowing pipe that tapers from a first pipe diameter to a second pipe diameter,
• wherein the at least partially collapsible container is composed at least partially of a foil which is constructed from a first layer which, during intended use of the primary packaging, comes into direct contact with the liquid,
• wherein the narrowing pipe forms a sealing lip in a direction of the interior space of the at least partially collapsible container configured to press against a plug situated in the at least one connector channel, and
• wherein both the first layer and the connector element are composed of a plastics material comprising at least one cyclic olefin polymer.