Container for drinks containing carbon di:oxide - has inner container permeable to carbon di:oxide

摘要

A double-walled container e.g. for beer or wine has an inner container made of a material permeable to carbon dioxide gas. The outer container is of a material non-permeable to carbon dioxide gas. Space between the containers contains a fluid under pressure and gas absorbing means. The fluid under pressure may be pressurised carbon dioxide gas or water-diluted carbon dioxide gas.