METHOD FOR FORMING COLLAPSIBLE RESERVOIR

摘要

A method for manufacturing a reservoir comprising the steps of (a) providing a generally rigid reservoir member in which a first generally concave cavity with a peripheral portion is formed, (b) providing a generally planar flexible foil member, (c) sealing the rigid reservoir member and the flexible foil member to each other corresponding to the peripheral portion 5 thereby forming a reservoir cavity, and (d) moving the flexible foil member into contact with the first concave cavity to thereby form a second generally concave cavity in the flexible foil member.