ARTICLE OF FOOTWEAR WITH MULTIPLE LAYERS, RETENTION SYSTEM FOR AN ARTICLE OF FOOTWEAR, AND METHODS OF MANUFACTURE
One aspect of the present disclosure provides a knitted component forming an overfoot portion and an underfoot portion of an article of footwear. The knitted component may include a first layer defining a void and a second layer second layer at least partially surrounding the first layer. The second layer may form an outer surface on the overfoot portion and the underfoot portion, and a portion of the first layer may be continuous with a portion of the second layer in an ankle region of the knitted component. An interstitial space may be formed between the first layer and the second layer, and a component may be disposed between the first layer and the second layer.
1 . A knitted component forming an overfoot portion and an underfoot portion of an article of footwear, the knitted component comprising:
a first layer defining a void;
a second layer, wherein the second layer at least partially surrounds the first layer, wherein the second layer forms an outer surface on the overfoot portion and the underfoot portion, and wherein a portion of the first layer is continuous with a portion of the second layer in an ankle region of the knitted component;
an interstitial space formed between the first layer and the second layer; and
a component disposed between the first layer and the second layer.
2 . The knitted component of claim 1 , wherein the first layer and the second layer are formed on a circular knitting machine, and wherein the second layer is inverted with respect to the first layer.
3 . The knitted component of claim 1 , wherein a seam is formed at least in the second layer in a toe region of the knitted component.
4 . The knitted component of claim 3 , wherein the seam joins the first layer to the second layer.
5 . The knitted component of claim 1 , wherein a tension force of the second layer retains the component in an underfoot area of the interstitial space.
6 . The knitted component of claim 1 , wherein the component is retained in an underfoot area of the interstitial space, and wherein the interstitial space is substantially free of adhesive.
7 . The knitted component of claim 1 , wherein the component is a midsole.
8 . The knitted component of claim 1 , further comprising:
a retention system formed in the second layer, the retention system comprising:
a plurality of first yarns and a plurality of second yarns, wherein the first yarns and the second yarns at least partially form the second layer of the knitted component,
wherein the second yarns bias the retention system to a first state, and
wherein the retention system exerts a tension force in a second state.
9 . An upper for an article of footwear, comprising:
a first layer;
a second layer, wherein the second layer at least partially surrounds the first layer, wherein a portion of the first layer is continuous with a portion of the second layer, and wherein the first layer is continuous with the second layer in at least a portion of an ankle region of the upper; and
a component disposed between the first layer and the second layer,
wherein the component comprises a material having different properties than the first layer and the second layer.
10 . The upper of claim 9 , wherein the component comprises a rigidity greater than the first layer and the second layer.
11 . The upper of claim 9 , wherein the component comprises a shape of a bootie that is coextensive with at least a forefoot region and a midfoot region of the upper.
12 . The upper of claim 11 , wherein the bootie is coextensive with a portion of a heel region.
13 . The upper of claim 9 , wherein the component comprises greater stretch resistance than the first layer and the second layer.
14 . The upper of claim 9 , wherein the first layer and the second layer are formed by a knitted component.
15 . The upper of claim 9 , wherein a pocket is disposed between the first layer and the second layer, wherein the pocket receives the component.
16 . The upper of claim 9 , further comprising a seam that joins the first layer to the second layer in a toe region of the upper.
17 . A method of making an article of footwear, the method comprising:
pulling an open toe region of an element towards a main fold line disposed between a first portion of the element and a second portion of the element so that an interior surface of the first portion of the element is exposed during the pulling operation;
pulling the open toe region past the main fold line and onto the second portion so that the first portion substantially surrounds the second portion and a fold is formed in an ankle region of the article of footwear;
aligning the open toe region of the element with a closed toe region of the second portion of the element; and
forming a seam to join the open toe region with the closed toe region.
18 . The method of claim 17 , wherein the element is a knitted component, and wherein the method further comprises forming the knitted component on a knitting machine.
19 . The method of claim 17 , wherein an interstitial space is formed between the first portion and the second portion.
20 . The method of claim 19 , further comprising inserting a component between the first portion and the second portion in the interstitial space.