Detergent portions packaged in a water-soluble polymeric film or capsule, are protected against premature water ingress by internal pressure built up by an internal anhydrous gas or gas-releasing substance

摘要

A detergent portion has a covering of a water-soluble polymer which is closed and which contains: (i) an anhydrous gas non-reactive with the detergent; or (ii) a substance producing such a gas on reaction with water. The presence of the gas results in an increased pressure within the covering.