Process for forming dispensing device

Claim 1

A process for forming a dispensing device to deliver a beneficial agent to a fluid environment of use having a temperature of at least 24° C., wherein the process comprises providing a dispenser by the steps of: (a) mixing a beneficial agent with a carrier means for absorbing thermal energy from the environment of use for forming a flowable composition; (b) mixing an expandable means for absorbing fluid and swelling with a weight means for increasing the specific density of the expandable means thereby forming an expandable weight means; (c) placing the composition formed in (a) in contacting arrangement with the expandable weight means formed in (b); (d) surrounding said contacting arrangement with a wall comprising in at least a part of a semipermeable composition permeable to the passage of fluid and impermeable to the passage of a beneficial agent; and, (e) forming a passageway through the wall for delivering the beneficial agent from the dispenser to the environment of use over time.