Welded double fabric tube

A fabric tube with two passages, the tube comprising:

• a fabric tube sheet with a length between opposite first and second ends thereof, a width between opposite first and second substantially parallel edges thereof, a first surface, and a second surface opposite the first surface;
• a first fabric weld strip comprising right and left flanges extending laterally from a bottom edge of a weld fin and welded to the first surface such that the weld fin thereof extends from the first surface;
• wherein the first fabric weld strip extends from the first end to the second end of the fabric tube sheet at a selected first distance D1 from the first edge of the fabric tube sheet;
• a second fabric weld strip comprising right and left flanges extending laterally from a bottom edge of a weld fin and welded to the second surface such that the weld fin thereof extends from the second surface;
• wherein the second fabric weld strip extends along the second surface from the first end to the second end of the fabric tube sheet between the first fabric weld strip and the second edge of the fabric tube sheet at a selected second distance D2 from the second edge of the fabric tube sheet;
• wherein the first edge of the fabric tube sheet is welded to the weld fin of the second fabric weld strip and the second edge of the fabric tube sheet is welded to the weld fin of the first fabric weld strip to form two passages.