Footwear upper components having contoured foam regions and methods of forming such components

Patent metadata

Field	Value
Publication number	US-9937644-B2
Application number	US-201414252292-A
Country	US
Kind code	B2
Filing date	Apr 14, 2014
Priority date	Apr 14, 2014
Publication date	Apr 10, 2018
Grant date	Apr 10, 2018

Abstract

An upper shell panel may be placed between first and second sections of a mold. The first section may include one or more expansion cavities and the second section may include one or more pour cavities. A foam-producing chemical mixture may be delivered into the one or more pour cavities and the mold may be closed. The delivered foam-producing chemical mixture may be allowed to expand within the closed mold and to force regions of the upper shell panel into the one or more expansion cavities. The upper shell panel may then be removed from the mold subsequent to the expansion of the delivered mixture.

First claim

The invention claimed is:

1. A method comprising:
placing an upper shell panel between a first section of a mold and a second section of the mold, the first section including one or more expansion cavities and the second section including one or more pour cavities, wherein
the second section includes a panel face and a pouring face and each of the one or more pour cavities includes openings in both the panel and pouring faces, and
the upper shell panel is placed between a working face of the first section and the panel face of the second section and covers the openings of the one or more pour cavities in the panel face;

delivering a foam-producing chemical mixture into the one or more pour cavities, wherein the delivering step includes delivering the mixture through the openings of the one or more pour cavities in the pouring face;
closing the mold, wherein the closing step includes placing a third section of the mold onto the second section and closing the openings of the one or more pour cavities in the pouring face;
allowing the delivered mixture to expand within the closed mold and to force regions of the upper shell panel into the one or more expansion cavities; and
removing the upper shell panel from the mold subsequent to the expansion of the delivered mixture.

2. The method of claim 1 , wherein the upper shell panel is in an unfolded condition after placement between the first and second sections.

3. The method of claim 1 , further comprising forming a footwear upper shell from the upper shell panel after removal of the upper shell panel from the mold.

4. The method of claim 3 , wherein the forming comprises folding the upper shell panel.

5. The method of claim 4 , wherein the forming comprises attaching one portion of the folded upper shell panel to another portion of the folded upper shell panel.

6. The method of claim 4 , further comprising attaching a lasting element to the formed footwear upper shell.

7. The method of claim 3 , further comprising attaching one or more sole structure elements to the formed footwear upper shell.

8. The method of claim 1 , wherein the delivering comprises delivering the mixture onto one or more exposed portions of the upper shell panel within the one or more pour cavities.

9. The method of claim 1 , wherein
the upper shell panel includes regions corresponding to medial and lateral regions of a completed upper,
the upper shell panel removed from the mold includes contoured foam regions formed during the allowing step, and
the contoured foam regions are located in the upper shell panel regions corresponding to medial and lateral regions of a completed upper.

10. The method of claim 1 , wherein
the upper shell panel includes regions corresponding to medial and lateral forefoot regions of a completed upper, medial and lateral midfoot regions of a completed upper and medial and lateral heel regions of a completed upper,
the upper shell panel removed from the mold includes contoured foam regions formed during the allowing step, and
the contoured foam regions are located in the upper shell panel regions corresponding to medial and lateral forefoot regions of a completed upper, in the upper shell panel regions corresponding to medial and lateral midfoot regions of a completed upper and in the upper shell panel regions corresponding to medial and lateral heel regions of a completed upper.

11. The method of claim 1 , wherein
a closing face of the third section includes pistons corresponding to the one or more pour cavities, each of the one or more pistons having the same shape as and fitting within its corresponding pour cavity, and
the closing step includes placing each of the pistons into its corresponding pour cavity.

12. The method of claim 11 , wherein an end face of one of the one or more pistons includes one or more registration projections, and further comprising:
prior to the closing step, placing a reinforcing element onto the end face and the one or more registration projections on the end face.

13. The method of claim 1 , wherein
placing the upper shell panel between the first and second sections comprises placing the upper shell panel on the working face while the second section is displaced from the first section and then placing the second section onto the first section and pressing the placed upper shell panel between the working face and the panel face.

14. The method of claim 1 , wherein
the working face of the first section includes a plurality of registration projections, and
the placing step includes placing the upper shell panel on the working face so that the registration projections extend through corresponding registration openings in the upper shell panel.

15. The method of claim 1 , wherein
the working face includes a base surface and a plurality of contoured surfaces, the base surface including a planar region, each of the contoured surfaces being recessed into the first section and defining one of the expansion cavities.

16. The method of claim 1 , wherein the placing step comprises placing an unfolded composite upper shell panel, the composite upper shell panel including a plurality of bonded panels.

17. The method of claim 1 , wherein the upper shell panel includes a skin/textile composite panel, the skin/textile composite panel comprising an elastic textile material bonded to a polymer skin material, and wherein the placing step comprises placing the upper shell panel so that the one or more expansion cavities are covered by the skin/textile composite panel.

Assignees

• Nike Inc

Inventors

• Hochdoerffer Michael
• Lyke Christopher J
• Tappatarnpornsuk Atikom

Classifications

• B29L2031/505

  Uppers · CPC title

• A43B23/0235

  Different layers of different material · CPC title

• B29C44/16

  shaped by the expansion of the material · CPC title

• A43B23/042

  Uppers made of one piece (one piece slippers A43B3/106; one piece sandals A43B3/124) · CPC title

• B29C44/1271 Primary

  the preformed parts being partially covered · CPC title