Method and product for manufacturing vulcanized footwear or cupsole footwear
View Patent ↗A vulc style and cupsole style footwear and a method for manufacturing the footwear are disclosed. The footwear includes a midsole that is directly attached to the upper. The midsole may be attached to the outsole by adhesive. In the method of manufacturing the footwear, the upper and an outsole are disposed a set distance apart. Polyurethane or other material for providing cushioning to the footwear is either injected between the upper and outsole or poured onto the outsole and the upper is traversed over the outsole so as to define the mold for defining the midsole. The polyurethane is directly attached to the upper and adhered to the outsole/cupsole.
1. A method of manufacturing footwear, the method comprising the steps of:
disposing an outsole on a first plate;
disposing an upper in a second plate wherein the first and second plates are traversable between a closed position and an open position, the outsole and the upper defining a volume when the first and second plates are traversed to the closed position;
disposing an amount of settable liquid on the top surface of the outsole wherein the amount of settable liquid is greater than the volume between the outsole and the upper;
traversing the first and second plates to the closed position to define a mold for forming a midsole from the settable liquid;
flowing an excess amount of the settable liquid through apertures formed in the outsole to surround posts that define the aperture for forming a mechanical interlock between the midsole and the outsole; and
setting the settable liquid.
2. The method of claim 1 wherein the outsole is a cupsole.
3. The method of claim 2 wherein the cupsole is a unitary part or a two part outsole and pre-cured foxing.
4. The method of claim 1 wherein the settable liquid is fused to a bottom surface of the upper and adhered to the interior surface of the outsole.
5. The method of claim 1 further comprising the step of flowing the settable liquid between a lip of the outsole and a lower peripheral portion of the upper.
6. The method of claim 5 wherein the settable liquid is flowed between an entire periphery of the lip of the outsole and the lower peripheral portion of the upper.
7. A method of manufacturing footwear, the method comprising the steps of:
disposing a cupsole on a first plate, the cupsole defining a top surface;
disposing an upper in a second plate wherein the second plate is traversable to a first position with respect to the first plate, the cupsole and the upper defining an inner volume when the first and second plates are traversed to the closed position;
disposing an amount of settable liquid on the top surface of the cupsole wherein the amount of settable liquid is greater than the inner volume;
traversing the second plate to the first position with respect to the first plate so that a bottom surface of the upper is adjacent to the settable liquid on an opposite side from the cupsole the top surface of the cupsole and the bottom surface of the upper defines a mold for forming a midsole from the settable liquid;
flowing an excess amount of the settable liquid through apertures formed in a sidewall of the cupsole;
curing the settable liquid to a solid state to bond the midsole to the bottom surface of the upper.
8. The method of claim 7 , further comprising the step of applying an adhesive to the upper surface of the cupsole to adhere the midsole to the cupsole.
9. The method of claim 7 wherein the second plate includes first and second parts that clamp around the lasted upper when the first and second parts are in a closed position, and the method further comprises the step of first applying adhesive to a lip of the cupsole, second traversing the second plate to the first position so that the lip of the cupsole is positioned between the upper and the first and second parts, and third traversing the first and second parts to the closed position to apply pressure on the lip of the cupsole to the upper.
10. The method of claim 9 further comprising the step of activating the applied adhesive.
11. The method of claim 10 wherein the activating step comprises the step of activating the applied adhesive with light or heat.
12. The method of claim 7 wherein the traversing step includes the step of rotating the first and second plates with respect to each other about a common pivot axis.
13. The method of claim 7 further comprising the step of lasting the upper and disposing the lasted upper in the second plate.
14. A method of manufacturing footwear, the method comprising the steps of:
disposing a cupsole on a first plate, the cupsole defining a top surface;
disposing a lasted upper in a second plate wherein the second plate is traversable to a first position with respect to the first plate, the cupsole and the lasted upper defining an inner volume;
traversing the second plate to the first position with respect to the first plate so that a bottom surface of the lasted upper is adjacent the cupsole so as to define a mold for a midsole;
injecting settable liquid between the bottom surface of the lasted upper and the cupsole in a volume greater than the inner volume;
flowing the excess amount of settable liquid through apertures formed in the cupsole;
curing the settable liquid to a solid state to form the midsole;
attaching the settable liquid to the upper and the cupsole.