Article of footwear with soil-shedding performance
The disclosure relates to articles of footwear and components thereof, including outsoles, which can be used in conditions normally conducive to the accumulation of soil on the outsoles. In particular, the disclosure relates to articles of footwear and components thereof including an outsole with a ground-facing crosslinked polymeric network film having a swell thickness increase at 1 hour greater than 20%. The outsoles can prevent or reduce the accumulation of soil on the footwear during wear on unpaved surfaces such as sporting fields. When the outsoles are wetted with water, the outsoles can become more compliant and/or can rapidly uptake and/or expel water, which can prevent soil from adhering to the outsole and/or can assist in shedding soil present on the outsole.
1. An outsole for an article of footwear, the outsole comprising:
an outsole backing member having a ground-facing side, wherein the ground-facing side of the outsole backing member includes a plurality of traction elements; and
a film secured to at least a portion of the ground-facing side of the outsole backing member and defining an external surface of the outsole, wherein the film comprises a crosslinked polymeric network, and wherein the film has a swell thickness increase at 1 hour greater than 20%, as characterize by a Swelling Capacity Test with a Footwear Sampling Procedure.
2. The outsole of claim 1 , wherein the swell thickness increase of the film ranges from 50% to 400%.
3. The outsole of claim 1 , wherein the film has a dry-state film thickness ranging from 0.1 millimeters to 2 millimeters.
4. The outsole of claim 3 , wherein the dry-state film thickness from 0.25 millimeters to 1 millimeter.
5. The outsole of claim 1 , wherein the crosslinked polymeric network comprises a physically-crosslinked hydrogel.
6. The outsole of claim 1 , wherein the film, as secured to the outsole backing member, has a volumetric swell increase greater than 50% at 1 hour, as characterized by the Swelling Capacity Test with the Footwear Sampling Procedure.
7. The outsole of claim 1 , wherein each of the plurality of traction elements comprises a terminal edge, and wherein the film is not present on the terminal edges of any of the plurality of traction elements.
8. The outsole of claim 1 , wherein one or more of the traction elements is selected from the group consisting of: a cleat, a stud, a spike, and a lug.
9. The outsole of claim 1 , wherein the traction elements are integrally formed with the outsole backing member.
10. The outsole of claim 1 , wherein the traction elements are removable traction elements.
11. The outsole of claim 10 , wherein the crosslinked polymeric network has one or more carbamate linkages.
12. An outsole for an article of footwear, the outsole comprising:
an outsole backing member having a ground-facing side, wherein the ground-facing side of the outsole backing member includes a plurality of traction elements; and
a film secured to at least a portion of the ground-facing side of the outsole backing member and defining an external surface of the outsole, wherein the film comprises a crosslinked polymeric network, and wherein the film has a swell thickness increase ranging from 20% to 400% at 1 hour, as characterized by a Swelling Capacity Test with a Footwear Sampling Procedure.
13. The outsole of claim 12 , wherein the swell thickness increase of the film ranges from 50% to 300%.
14. The outsole of claim 12 , wherein the swell thickness increase of the film ranges from 100% to 200%.
15. The outsole of claim 12 , wherein the crosslinked polymeric network comprises a plurality of polyurethane chains.
16. The outsole of claim 12 , wherein each of the plurality of traction elements comprises a terminal edge, and wherein the film is not present on the terminal edges of any of the plurality of traction elements.
17. The outsole of claim 12 , wherein one or more of the traction elements is selected from the group consisting of: a cleat, a stud, a spike, and a lug.
18. The outsole of claim 12 , wherein the traction elements are integrally formed with the outsole backing member.
19. The outsole of claim 12 , wherein the traction elements are removable traction elements.
20. The outsole of claim 19 , wherein the crosslinked polymeric network has one or more carbamate linkages.