Footwear with a sole structure incorporating a lobed fluid-filled chamber

A method of blow-molding a fluid-filled chamber for an article of footwear, the method comprising steps of:

• positioning a parison between a first portion and a corresponding second portion of a mold, the first portion and the second portion of the mold defining a cavity with a shape of the chamber;
• pressurizing an interior of the parison;
• shaping opposite sides of the parison to form the chamber within the cavity, the chamber having a first surface, an opposite second surface, and a sidewall extending between the first surface and the second surface;
• bonding the opposite sides of the parison together to define a parting line in the sidewall of the chamber, the parting line having at least a first part that is adjacent the first surface, a second part that is adjacent the second surface, and a third part that extends from the first part to the second part, and the parting line extending around a majority of the chamber to separate the chamber from excess portions of the parison;
• and
• removing the excess portions of the parison.

A method of blow-molding a fluid-filled chamber for an article of footwear, the method comprising steps of:

• positioning a parison between a first portion and a corresponding second portion of a mold, the parison having a first side that faces the first portion, and the parison having a second side that faces the second portion;
• pressurizing an interior of the parison to expand a size of the parison;
• shaping the parison to define a first surface, a second surface, and a sidewall of the chamber;
• bonding the first side of the parison to the second side of the parison to form a parting line between the first side and the second side of the parison, the parting line being at least partially located within the sidewall, and the parting line having a portion that extends from the first surface to the second surface of the chamber, the parting line separating the chamber from excess portions of the parison that extend around substantially all of the chamber;
• and
• removing the excess portions of the parison.

A method of blow-molding a fluid-filled chamber for an article of footwear, the method comprising steps of:

• providing a mold having a first portion and a corresponding second portion, one of the first portion and the second portion including protrusions, and the other of the first portion and the second portion including indentations that receive the protrusions, only a portion of the surfaces defining each of the indentations and the protrusions also forming surfaces of the mold that form the chamber;
• positioning a parison between the first portion and the second portion of the mold, the parison having a first side that faces the first portion and the parison having a second side that faces the second portion;
• pressurizing an interior of the parison;
• bending the parison around the protrusions and into the indentations as the first portion and the second portion translate toward each other and contact the parison;
• shaping the parison to form a first surface from the first side and a second surface from the second side, the first side and the second side being interlaced to form at least a portion of a sidewall of the chamber;
• bonding opposite sides of the parison together to define a parting line extending around a majority of the chamber, the parting line separating the chamber from excess portions of the parison;
• and
• removing the excess portions of the parison.