Process of forming a container closure

A method of forming a plastic closure for a fluid container, said closure having an annular collar, a plurality of leaflets, a plurality of flexible and foldable webs and a cap, comprising:

• molding said closure with said leaflet members attached by hinges to the collar and said webs attached to and extending between adjacent pairs of leaflets, further comprising initially molding said closure in the open position with said leaflets extending upwardly at an angle and separated from one another, with said webs unfolded and extending between the separated leaflets, and with said cap in an open position;
• thereafter pivoting said leaflets, while said hinges are warm, downwardly to a position where said leaflets extend adjacent one another in an essentially planar surface and said webs fold beneath the adjacent leaflets;
• closing said closure cap;
• and annealing said closed closure with its closed cap to break the as-molded open positional memory to establish a closed closure positional memory when product is not being dispensed through the closure by the user.