Toothpaste tube comprises inner tube filled with paste and enclosed by outer tube with valve connecting it to atmosphere, so that as paste is dispensed from inner tube it is held in its compressed state

摘要

The toothpaste tube comprises an inner tube (20) filled with paste (21). This is enclosed by an outer tube (10) of similar design fitted with a valve (12) connecting it to the atmosphere, so that as paste is dispensed from the inner tube it is held in its compressed state.