| abstract |
In one embodiment, a foam generating article comprises: a first layer comprising a gas generating composition and a second layer disposed on a first side of the first layer. The second layer comprises a first surfactant and has a plurality of second layer pores with a second pore size sufficient to form bubbles upon the generation of the gas. In another embodiment, the foam generating article comprises: a first layer comprising a gas generating composition, and a second layer disposed on a first side of the first layer, wherein the second layer comprises a first surfactant. The first layer comprises less than or equal to about 5 wt% of all surfactant in the article. |