Bubble, bubble, toil, but still no commercial foamed part

The first commercial application of foam for blow molding has yet to be determined. Possible applications include tortilla warmers, shipping boxes and shampoo bottles. Foaming saves about 25-30% on resin. This is significant in Europe where lighter weight containers conform to environmental regulations. It gives soft feel and brighter colors for toys and gives stiffness and strength for industrial parts. However, the delay in foaming has been due to the difficulty in getting even distribution of bubbles in bottle walls.