Stacked inflatable tubes and methods of forming stacked inflatable tubes for evacuation assemblies

An inflatable stacked tube assembly, comprising:

• a first panel forming a top tube, the first panel including a first fold, a second fold, a first top tube interior surface portion, a first flange, and a second flange, wherein the first top tube interior surface portion extends from the first fold to the second fold, wherein the first flange extends from the first fold to a first circumferential end of the first panel, and wherein the second flange extends from the second fold to a second circumferential end of the first panel;
• a second panel bonded to the first panel and forming a portion of a bottom tube, the second panel including a bottom tube interior surface portion extending from a first circumferential end of the second panel to a second circumferential end of the second panel;
• and
• a first seam tape bonded to the first top tube interior surface portion, wherein the first seam tape is located along the first fold and along the second fold.

A method of forming an inflatable stacked tube assembly, comprising:

• folding a first panel to form a first fold and orient a first top tube exterior surface portion of the first panel toward a first bottom tube exterior surface portion of the first panel;
• folding a second panel to form a second fold and orient a second top tube exterior surface portion of the second panel toward a second bottom tube exterior surface portion of the second panel;
• bonding a first seam tape to a first top tube interior surface portion of the first panel and a second first top tube interior surface portion of the second panel, wherein the first seam tape is located along the first fold and the along the second fold, wherein the first top tube interior surface portion and the first top tube exterior surface portion each extend from the first fold to a first circumferential end of the first panel, and wherein the second top tube interior surface portion and the second top tube exterior surface portion each extend from the second fold to a first circumferential end of the second panel;
• bonding a second seam tape to a first bottom tube interior surface portion of the first panel and a second bottom tube interior surface portion of the second panel, wherein the second seam tape is located along the first fold and the along the second fold, wherein the first bottom tube interior surface portion and the first bottom tube exterior surface portion each extend from the first fold to a second circumferential end of the first panel, and wherein the second bottom tube interior surface portion and the second bottom tube exterior surface portion each extend from the second fold to a second circumferential end of the second panel;
• coupling the first circumferential end of the first panel to the first circumferential end of the second panel;
• and
• coupling the second circumferential end of the first panel to the second circumferential end of the second panel.