A method for manufacturing a light-weight waterproof shoe/boot includes steps of cutting waterproof leather, arranging and stacking vamp section, forming through hot pressing, sewing heel section, hot-pressing heel section, combining midsole, and injecting sole to accompany fabrication of a waterproof shoe/boot, in which fabrication of a vamp section and a shaft section is accomplished through hot pressing the waterproof leather that is coated with a hot-melt adhesive; a sewing line of a heel section is covered by a heel water-resistant plate that is attached thereto through hot pressing to provide an effect of waterproofness; and a sewing line between a midsole and the vamp section is covered by an upper rim of a sole to achieve an effect of waterproofness. The vamp section and the shaft section are made with the waterproof leather that is light and thin so that the weight of the waterproof shoe/boot is greatly reduced.

An article of footwear has an upper that is direct attached with the sole. The sole has a film extending up sidewalls of the sole to a film edge that is prior to the sidewall and the upper joining. Method of manufacture of the article of footwear includes steps of positioning a film over a mold cavity and then securing the film to the mold. The film is heated and then drawn into the mold cavity under a vacuum. The film forms a liner of the mold cavity. A foam composition is injected into the lined mold cavity. As the foam composition expands, the foam composition interacts with and mechanically engages with the upper that is positioned at the mold cavity to allow for the mechanical engagement that results in the direct attach of the sole to the upper. The film is then trimmed from the sole sidewalls.

The present technology relates generally to a footwear assembly and method of manufacturing said footwear assembly. The footwear assembly includes an outsole and an upper connected to the outsole, where the upper includes a neoprene sock, a vulcanized rubber layer, and an injection molded layer. The neoprene sock is a full-foot neoprene sock having a foot portion that is configured to receive a wearer's foot. The vulcanized rubber layer fully covers a vamp portion, heel portion, toe portion, and ankle portion of the neoprene sock while only covering some of an underfoot portion. The injection molded layer is formed over a portion of the vulcanized rubber layer and completely covers the underfoot portion of the neoprene sock.

This document discloses a process for manufacturing recyclable injection molded microcellular foams for use in, footwear components, seating components, protective gear components, and watersport accessories. The process includes the steps of providing a thermoplastic polymer which comprises at least one monomer derived from depolymerized post-consumer plastic, inserting a fluid into a barrel of a molding apparatus. The fluid is introduced under temperature and pressure conditions to produce a super critical fluid. The process further includes mixing the thermoplastic polymer and super critical fluid so as to create a single phase solution, and injecting the single phase solution into a mold of an injection molding machine under gas counter pressure. The process further includes foaming the single phase solution by controlling the head and temperature conditions within the mold.

An article of footwear has an upper that is direct attached with the sole in a article of footwear mold. The sole has a film extending up sidewalls of the sole to a film edge that is prior to the sidewall and the upper joining. Method of manufacture of the article of footwear includes steps of positioning a film over a mold cavity and then securing the film to the mold. The film is heated and then drawn into the mold cavity under a vacuum. The film forms a liner of the mold cavity. A foam composition is injected into the lined mold cavity. As the foam composition expands, the foam composition interacts with and mechanically engages with the upper that is poisoned at the mold cavity to allow for the mechanical engagement that results in the direct attach of the sole to the upper.

A sole structure of an article of footwear is provided and includes a first midsole portion including a first sidewall and a second midsole portion including a second sidewall. The sole structure also includes a first sheet disposed between the first midsole portion and the second midsole portion and including a first surface and a second surface formed on an opposite side of the first sheet than the first surface. The first sheet includes one or more apertures extending through the first sheet from the first surface to the second surface. The first midsole portion and the second midsole portion are operably connected through the one or more apertures of the first sheet.

A spike is operable to be removably coupled to an article of footwear. The spike includes a first portion that is substantially rigid. The spike also includes a second portion that is resilient.

A compressible footwear that may include a compressible sole and a compressible upper part that is mechanically coupled to the compressible sole. The compressible sole consisting essentially of multiple compressible cells that are made of a flexible material and have top openings and bottom openings. The multiple compressible cells span over at least a majority of the compressible sole and are configured to undergo a compression while substantially maintaining a thickness of the compressible sole.

A sole for a shoe, the sole comprising reinforcing members extending in a front half of the sole, wherein at least a first one of the reinforcing members further extends rearwardly beyond a midfoot area and into a heel area of the sole and wraps up to a posterior portion of an ankle region. A shoe, in particular a running shoe, comprising such a sole. A method for the manufacture of such items.

The invention relates to a method for producing a shoe with an air pump device bellows which is arranged in the heel region, wherein an upper (2), a midsole (3), and an outsole (4) are first provided. The lower face (32) of the midsole (3) has a recess (36) for forming a cavity for the bellows and a surface which surrounds the recess on all sides and which comprises a surface profile, and the upper face (41) of the outsole (4) has a surface with a surface profile which complements the surface profile of the lower face of the midsole. The horizontal extension of the upper face (41) of the outsole (4) and of a sole section (22) of the upper (2) is greater than the horizontal extension of the midsole (3) such that the outsole (4) and the upper (2) protrude beyond the centered midsole (3) on all sides. In order to connect the upper (2), the midsole (3), and the outsole (4), the midsole (3) is first adhered onto the sole section (22) in a centered manner, and the upper (2) together with the midsole (3) are pressed onto the outsole (4) which is provided in the base element (6) of an injection mold. In the process, the complementary surfaces are adhered such that the cavity of the recess (36) is completely enclosed. The upper (2), the midsole (3), and the outsole (4) are then enclosed by an injection mold, and the outsole (4) upper face (41) surface regions which are not covered by the midsole (3), the outer surfaces of the midsole (3), and the lower face and adjacent lateral surface regions of the upper (2) are overmolded with an edge sole region plastic.