Manufacture of footwear
AssigneeK. Shoemakers Limited
InventorsDonald S. Painter, Christopher Graeme-Barber
Life of this patent
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Abstract
A method of manufacturing a shoe comprises the step of dry or moist heat setting a lasted shoe upper, with or without a protective coating as necessary, by total or partial immersion in a bath of heated liquid or fluidized solid material. The lasted shoe upper may contain a stiffener element and particularly a heel stiffener made of fibre reinforced thermoplastic or thermosetting polymeric material which becomes cured by the heat treatment.
Claims15
A method of manufacturing a shoe which comprises the steps of cutting a stiffening element of fibre reinforced thermoplastic or thermo-setting plastics material to shape a stiffener in a flat form, inserting the stiffener between the lining of the shoe and the shoe upper, making the stiffener malleable, if necessary, by applying a small amount of heat, lasting the shoe upper, and then heat setting the shoe upper and the stiffener by immersing at least that part of the shoe which embodies the stiffener in a bath of fluidised solid material whereby heat transfer takes place uniformly across the shoe surface and forms or cures the stiffener over its whole area to the shape of the last.
A method of manufacturing a shoe which comprises:
- at least partially immersing a lasted shoe upper with a protective covering in a bath of fluidised solid material;
- and
- heating the bath to thereby dry heat set the lasted shoe upper.
A method in accordance with claim 7 wherein the sheet material is shrink-wrapped around the shoe.
Dependencies are inferred from the claim text.