Article Of Footwear With Fluid-Filled Chamber Lacking An Inflation Channel And Method For Making The Same

摘要

An article of footwear is provided having a pressurized fluid-filled chamber in the sole structure having a continuous perimeter weld and lacking an inflation channel. The chamber may be formed from opposing polymer sheets, a continuous perimeter weld lacking a weld channel bonding the sheets and forming an interior void between the sheets, and a fluid disposed within the interior void exerting outward pressure on the sheets. A method for making the chamber can include placing a pair of polymer sheets in an opposing arrangement, pressing opposing perimeter weld portions of the sheets against each other to form an airtight seal along a perimeter region of an interior void, supplying a flow of pressurized air between the opposing sheets into the interior void, and, while maintaining a desired fluid pressure, welding the perimeter weld portions of the sheets to each other. A high-frequency welder for forming chamber is also provided.

主权项

1. An article of footwear having an upper and a sole structure secured to the upper, the sole structure comprising:
a midsole formed from a foamed polymer material and positioned adjacent to the upper; a pressurized fluid-filled chamber comprising:
a first flexible polymer sheet;a second flexible polymer sheet;a continuous perimeter weld bonding the first sheet to the second sheet to form a sealed interior void between the sheets, the continuous perimeter weld lacking an inflation channel; anda fluid disposed within the interior void exerting an outward pressure on the sheets; and an outsole at a bottom portion of the article of footwear opposite the upper configured to engage the ground during use.