Footwear including a textile upper
A textile upper for an article of footwear includes at least one microclimate modulation structure located at one or more regions of the upper. In an embodiment, a microclimate modulation structure includes a plurality of knitted strands, the knitted strands including a first strand type and a second strand type, the first strand type having a greater thermal conductivity than the second strand type. In another embodiment, the microclimate modulation structure includes an uneven surface that includes a plurality of knitted beams and a plurality of indentations defined between the knitted beams.
1. A method of forming an article of footwear, the method comprising:
knitting a textile by stitching a plurality of strands to form a first knit layer connected with a second knit layer, the second knit layer including a plurality of pockets defined within the second knit layer, wherein:
the knitting further comprises:
knitting an array of indentations and knitted beams disposed at selected locations within the second knit layer, each beam being formed from a plurality of knitted strands, and the plurality of pockets are located between the indentations and corresponding beams extending over the indentations; and
knitting a plurality of elongated sections within the second knit layer extending transverse the knitted beams such that knitted beams overlie the elongated sections and include bridging portions that extend over the indentations such that a gap exists between each bridging portion and a corresponding indentation;
the first knit layer includes a knit back and the second knit layer includes a knit face;
the knit back comprises a plurality of first strands possessing a thermal conductivity value of greater than 0.40 W/m K; and
the knit face comprises a plurality of second strands possessing a thermal conductivity value of no more than 0.40 W/m K;
incorporating the textile into at least a portion of an upper; and
coupling the upper to a sole structure.
2. Then method according to claim 1 , wherein each pocket of the plurality of pockets possesses a height of approximately two millimeters or more.
3. The method according to claim 1 , wherein:
the upper comprises a vamp including a throat line and a toe cage; and
the textile is provided within the vamp of the upper.
4. The method according to claim 3 , wherein knitting further comprises stitching the first strands and the second strands such that at least some of the first strands of the knit back are selectively exposed along the knit face.
5. The method according to claim 1 , wherein knitting further comprises forming stitches in each of the first knit layer and the second knit layer such that the first knit layer possesses a first stitch density that is lower than a second stitch density of the second knit layer.
6. The method according to claim 1 , wherein incorporating the textile into the upper comprises forming the upper such that the second knit layer forms an exterior surface of the upper.
7. A method of forming an article of footwear, the method comprising:
knitting a textile by stitching a plurality of strands to form a first knit layer connected with a second knit layer, wherein:
the first knit layer includes a knit back and the second knit layer includes a knit face;
the knit back comprises a plurality of first strands possessing a thermal conductivity value of greater than 0.40 W/m K;
the knit face comprises a plurality of second strands possessing a thermal conductivity value of no more than 0.40 W/m K; and
at least 50% of the first layer is formed with the first strands, and at least 50% of the second layer is formed with the second strands;
incorporating the textile into at least a portion of an upper; and
coupling the upper to a sole structure;
wherein the knitting further comprises:
knitting an array of indentations and knitted beams disposed at selected locations within the second knit layer, each beam being formed from a plurality of knitted strands; and
knitting a plurality of elongated sections within the second knit layer extending transverse the knitted beams such that knitted beams overlie the elongated sections and include bridging portions that extend over the indentations and a pocket exists between each bridging portion and a corresponding indentation.