Method and apparatus for forming sheet material and sheet material formed thereby
AssigneeStanbee Company, Inc.
InventorWilliam Goodger
Life of this patent
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Abstract
A method and an apparatus are provided for forming sheet material that can be used as a stiffener. The sheet material may be unitary and is formed from a material that exhibits appropriate resiliency, stiffness and shape retention. The sheet material preferably is formed with a profiled die so that at least one edge of the stiffener is chamfered. The profiled forming and cutting die may be part of press or part of a roll former.
Claims10
A stiffener for use in manufacturing shoes, the stiffener being formed unitarily from a uniform matrix of resin material having opposite substantially parallel surfaces and an edge extending between the surfaces, at least a portion of the edge being chamfered.
A method for forming a stiffener comprising:
- extruding a resin material to define a resin web;
- and
- presenting the web to a forming and cutting die for cutting the web into sheets having an outer peripheral edge defining a specified shape for the stiffener and simultaneously chamfering at least one portion of the peripheral edge.
A method for forming sheet shaped stiffeners comprising:
- providing a first roll and a second roll aligned substantially parallel to one another to define a nip therebetween, one of said rolls being formed with a plurality of die recesses thereon, said die recesses defining shapes for said stiffener;
- rotating said rolls in opposite direction so that surfaces of said roll approach one another at an upstream side of said nip and diverge from one another at a downstream side of said nip;
- feeding a flowable resin material into the upstream side of the nip so that the resin flows into the die recesses and moves through the nip;
- and
- separating the resin from the die recesses at the downstream side of the nip to form the stiffeners.
Dependencies are inferred from the claim text.