Cushioning component for a wearable article
An article of footwear includes a sole structure having a cushioning component. The cushioning component includes a bladder defining an interior cavity between opposing inner surfaces of a first barrier sheet and a second barrier sheet, and the barrier sheets sealed to one another along a peripheral bond. A core is disposed in the interior cavity and spaced entirely inward of the peripheral bond. The core includes at least one polymeric sheet traversing the interior cavity between and directly bonded to the opposing inner surfaces of the barrier sheets at a plurality of wavy bonds to tether the barrier sheets to one another. The wavy bonds are arranged with waves having peaks and valleys extending in a fore-aft direction such that the at least one polymeric sheet does not create any sealed chambers within the bladder that are not in fluid communication with the interior cavity.
1 . An article of footwear comprising:
a sole structure having a cushioning component, the cushioning component including:
a bladder including a first barrier sheet and a second barrier sheet, the first barrier sheet and the second barrier sheet together defining an interior cavity between opposing inner surfaces of the first barrier sheet and the second barrier sheet, and the first barrier sheet and the second barrier sheet sealed to one another along a peripheral bond to enclose the interior cavity and retain a gas in the interior cavity; and
a core disposed in the interior cavity and spaced entirely inward of the peripheral bond, the core including at least one polymeric sheet traversing the interior cavity between and directly bonded to the opposing inner surfaces of the first barrier sheet and the second barrier sheet at a plurality of wavy bonds to tether the first barrier sheet to the second barrier sheet, the at least one polymeric sheet displaced from the opposing inner surfaces by the gas at unbonded areas of the at least one polymeric sheet, the plurality of wavy bonds arranged with waves having peaks and valleys extending in a fore-aft direction of the article of footwear and such that the gas in the interior cavity is in fluid communication around the at least one polymeric sheet without the at least one polymeric sheet creating any sealed chambers within the bladder that are not in fluid communication with the interior cavity;
wherein the opposing inner surfaces of the bladder include a first inner surface of the first barrier sheet and a second inner surface of the second barrier sheet;
wherein each wavy bond of the plurality of wavy bonds tethering the at least one polymeric sheet to the first inner surface of the first barrier sheet extends continuously from a medial edge of the core to a lateral edge of the core;
wherein adjacent ones of the wavy bonds tethering the at least one polymeric sheet to the first inner surface of the first barrier sheet are spaced apart from and nonintersecting with one another; and
wherein the cushioning component is characterized by an absence of any bonds bonding the at least one polymeric sheet to the first inner surface of the first barrier sheet between the adjacent ones of the wavy bonds.
2 . The article of footwear of claim 1 , wherein anti-weld ink is disposed on the core at the unbonded areas.
3 . The article of footwear of claim 1 , wherein the core lays flat within the bladder with the unbonded areas contacting the opposing inner surfaces when the interior cavity of the bladder is uninflated.
4 . The article of footwear of claim 1 , wherein a thickness of each polymeric sheet of the at least one polymeric sheet of the core is less than or equal to a thickness of the first barrier sheet and is less than or equal to than a thickness of the second barrier sheet.
5 . The article of footwear of claim 1 , wherein:
the plurality of wavy bonds includes a first group of bonds in a forefoot region of the article of footwear and a second group of bonds in a heel region of the article of footwear; and
spacing between adjacent bonds of the first group of bonds is less than spacing between adjacent bonds of the second group of bonds such that the opposing inner surfaces are held closer to one another by the at least one polymeric sheet in the forefoot region than in the heel region.
6 . The cushioning component of claim 1 , wherein a distance in a transverse direction of the cushioning component from an outer perimeter of the at least one polymeric sheet to the peripheral bond is greater in a heel region of the article of footwear than in a forefoot region of the article of footwear.
7 . The article of footwear of claim 1 , wherein:
the at least one polymeric sheet of the core includes a first polymeric sheet and a second polymeric sheet, the first polymeric sheet disposed between the first barrier sheet and the second polymeric sheet, and the second polymeric sheet disposed between the first polymeric sheet and the second barrier sheet such that a first side of the first polymeric sheet faces the first inner surface of the first barrier sheet, a second side of the first polymeric sheet faces a first side of the second polymeric sheet, and a second side of the second polymeric sheet faces the second inner surface of the second barrier sheet; and
the first side of the first polymeric sheet is directly bonded to the first inner surface of the first barrier sheet at a first set of bonds of the plurality of wavy bonds, the second side of the second polymeric sheet is directly bonded to the second inner surface of the second barrier sheet at a second set of bonds of the plurality of wavy bonds, the second side of the first polymeric sheet is directly bonded to the first side of the second polymeric sheet at a third set of bonds of the plurality of wavy bonds, the bonds of the third set alternating with the bonds of the first set along a length of the first polymeric sheet, and the bonds of the third set alternating with the bonds of the second set along a length of the second polymeric sheet.
8 . The article of footwear of claim 7 , wherein at least some of the bonds of the second set are aligned with the at least some of the bonds of the first set in a fore-aft direction of the article of footwear when the interior cavity of the bladder is in an uninflated state.
9 . The article of footwear of claim 8 , wherein at least some of the bonds of the second set are wider in the fore-aft direction than the bonds of the first set with which the at least some of the bonds of the second set are aligned.
10 . The article of footwear of claim 9 , wherein:
the bonds of the third set are offset in the fore-aft direction from the bonds of the second set and from the bonds of the first set; and
wherein each bond of the second set is wider in the fore-aft direction than adjacent bonds of the third set.
11 . The article of footwear of claim 10 , wherein each bond of the third set has a width greater than or equal to a width of adjacent bonds of the first set.
12 . An article of footwear comprising:
a sole structure having a cushioning component, the cushioning component including:
a bladder including a first barrier sheet having a first inner surface and a second barrier sheet having a second inner surface opposing the first inner surface;
wherein the second barrier sheet is disposed distally of the first barrier sheet, the first barrier sheet and the second barrier sheet define an interior cavity between the first inner surface and the second inner surface, and the first barrier sheet and the second barrier sheet are sealed to one another along a peripheral bond to enclose the interior cavity and retain a gas in the interior cavity; and
a core disposed in the interior cavity and spaced entirely inward of the peripheral bond, the core including at least one polymeric sheet traversing the interior cavity between and directly bonded to the first inner surface at a first set of bonds and to the second inner surface at a second set of bonds to tether the first barrier sheet to the second barrier sheet;
wherein at least some of the bonds of the second set are wider in a fore-aft direction of the article of footwear than at least some of the bonds of the first set;
wherein the at least one polymeric sheet is displaced from the first inner surface and the second inner surface by the gas at unbonded areas of the at least one polymeric sheet;
wherein the first set of bonds and the second set of bonds are arranged such that the gas in the interior cavity is in fluid communication around the at least one polymeric sheet without the at least one polymeric sheet creating any sealed chambers within the bladder that are not in fluid communication with the interior cavity;
wherein the at least one polymeric sheet of the core includes a first polymeric sheet and a second polymeric sheet, the first polymeric sheet disposed between the first barrier sheet and the second polymeric sheet, and the second polymeric sheet disposed between the first polymeric sheet and the second barrier sheet such that a first side of the first polymeric sheet faces the first inner surface of the first barrier sheet, a second side of the first polymeric sheet faces a first side of the second polymeric sheet, and a second side of the second polymeric sheet faces the second inner surface of the second barrier sheet;
wherein the first side of the first polymeric sheet is directly bonded to the first inner surface of the first barrier sheet by the first set of bonds, the second side of the second polymeric sheet is directly bonded to the second inner surface of the second barrier sheet by the second set of bonds, the second side of the first polymeric sheet is directly bonded to the first side of the second polymeric sheet by a third set of bonds, the bonds of the third set alternating with the bonds of the first set along a length of the first polymeric sheet, and the bonds of the third set alternating with the bonds of the second set along a length of the second polymeric sheet; and
wherein the at least some of the bonds of the second set that are wider than the at least some of the bonds of the first set are aligned with the at least some of the bonds of the first set in the fore-aft direction when the interior cavity of the bladder is in an uninflated state.
13 . The article of footwear of claim 12 , wherein the bonds of the second set progressively decrease in width from a heel region to a forefoot region of the article of footwear.
14 . The article of footwear of claim 12 , wherein the at least some of the bonds of the second set are in a forefoot region of the article of footwear.
15 . The article of footwear of claim 12 , wherein:
the bonds of the third set are offset in the fore-aft direction from the bonds of the second set and from the bonds of the first set; and
wherein each bond of the second set is wider in the fore-aft direction than adjacent bonds of the third set.
16 . The article of footwear of claim 15 , wherein each bond of the third set has a width greater than or equal to a width of adjacent bonds of the first set.
17 . The article of footwear of claim 12 , wherein each bond of the first set and each bond of the second set extends continuously from a medial edge of the core to a lateral edge of the core.