FOOTWEAR HAVING POLYURETHANE BRIDGE LAYER JOINING SOLE AND UPPER AND METHOD OF MANUFACTURING SAME

摘要

The present invention is generally related to an article of footwear, in particular, to an improved article of footwear that has a polyurethane bridge layer joining sole and upper, without having to use glue or some other bonding agent and a method of manufacturing such an article of footwear.

主权项

1. A method of making an article of footwear, the article of footwear having an upper and a sole, the method comprising the steps of:
placing a pre-constructed sole in a first half of a mould, placing a pre-constructed upper in a second half of a mould, the pre-constructed upper being mounted to a last when placed in the second half, closing the first half and the second half to bring them together, the closed mould having a gap between the sole and the last, injecting a bonding material into the gap and allowing the injected bonding material to solidify to form an injected bonding layer to join the upper to the sole, and removing the bonded article of footwear from the mould and the last.