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US 7,562,661 B2Granted
Hair warming tool and hair treating method
AssigneeKao Corporation
InventorsKenichi Ueyama, Akira Shiga, Michiko Tada
Life of this patent
Estimating the term…
Abstract
A hair warming tool is in the form of sheet and has at least one heating part in the center thereof and a margin around said heating part. It is designed to wrap tied hair in said heating part and to be held in place to keep the wrapping state by fastening the margin with a fastening means such as an elastic band, a string or a wire. A hair treating method comprises wrapping tied hair with a hair warming tool of sheet form having at least one heating part while leaving at least the part of the hair near the roots unwrapped to warm the hair.
Claims27
A hair warming tool of sheet form comprising:
- at least one heating part in the center thereof, the heating part including a heat generating material which contains iron powder and generates heat upon contact with air;
- and
- a margin disposed around said heating part, said margin being free of the heat generating material and configured to wrap hair adjacent to said heating part and to be held in place to maintain a wrapped state by a fastener connected to said margin,
- wherein the hair warming tool includes first and second sides, each of the first and second sides having a surface area of from 100 to 1200 cm2, and the hair warming tool further includes an outermost base sheet adapted to contact said wrapped hair when in the wrapping state, said outermost base sheet comprising a water resistant material, said outermost base sheet being non-removably attached to said hair warming tool and the margin includes a seal at an outer perimeter of the margin, and the margin further includes a portion between the seal and the heating part, the portion including a first sheet separated from the outermost base sheet by an air gap,
- wherein a total area of the heating part, as viewed from the first side, extends across 10% to 40% of the surface area of the first side, and
- wherein a width of the margin as measured from an edge of the hair warming tool to the nearest heating part extends from 3 to 15 cm over a periphery of the hair warming tool.
3 more elements
A hair treating method which comprises:
- activating at least one heating part of a hair warming tool of sheet form including an outermost base sheet comprising a water resistant material, said heating part including a heat generating material, the hair warming tool including first and second sides, each of the first and second sides having a surface area of from 100 to 1200 cm2, and the hair warming tool further including a seal, and a margin free of the heat generating material and disposed between the heating part and the seal, the margin including a first sheet separated from the outermost base sheet by an air gap;
- wrapping tied hair with said hair warming tool, the tool wrapped around the hair with the outermost base sheet facing and contacting the hair while leaving at least a part of the hair near roots unwrapped,
- wherein a total area of the heating part, as viewed from the first side, extends across 10% to 40% of the surface area of the first side, and
- wherein a width of the margin as measured from an edge of the hair warming tool to the nearest heating part extends from 3 to 15 cm over a periphery of the hair warming tool.
1 more element
A method for treating hair, comprising:
- obtaining a portion of hair;
- activating a heat generating portion of a hair warmer, the heat generating portion including a heat generating material;
- wrapping the portion of hair in said hair warmer including an outermost base sheet comprising a water resistant material, the outermost base sheet facing and contacting the portion of hair as the portion of hair is wrapped with the hair warmer;
- applying an oiliness compound to the portion of hair before the wrapping,
- providing a seal sealing a first sheet to the outermost sheet around a perimeter of the outermost sheet, and
- providing an air gap between the first sheet and the outermost sheet in a margin between the seal and the heat generating portion, said margin being free of the heat generating material and configured to wrap hair adjacent to said heating part and to be held in place to maintain a wrapped state by a fastener connected to said margin,
- wherein the hair warmer includes first and second sides, each of the first and second sides having a surface area of from 100 to 1200 cm2,
- wherein a total area of the heat generating portion, as viewed from the first side, extends across 10% to 40% of the surface area of the first side, and
- wherein a width of the margin as measured from an edge of the hair warming tool to the nearest heating part is from 3 to 15 cm over a periphery of the hair warming tool.
6 more elements
A method for treating hair, comprising:
- obtaining a portion of hair;
- activating a heat generating portion of a hair warmer, the heat generating portion including a heat generating material;
- wrapping the portion of hair in said hair warmer including an outermost base sheet comprising a water resistant material, the outermost base sheet facing and contacting the portion of hair as the portion of hair is wrapped with the hair warmer;
- applying a composition having a pH between 2 and 4.5 to the portion of hair before the wrapping,
- providing a seal sealing the first sheet to the outermost sheet around a perimeter of the outermost sheet, and
- providing an air gap between the first sheet and the outermost sheet in a margin between the seal and the heat generating portion, said margin being free of the heat generating material and configured to wrap hair adjacent to said heating part and to be held in place to maintain a wrapped state by a fastener connected to said margin,
- wherein the hair warmer includes first and second sides, each of the first and second sides having a surface area of from 100 to 1200 cm2,
- wherein a total area of the heat generating portion, as viewed from the first side, extends across 10% to 40% of the surface area of the first side, and
- wherein a width of the margin as measured from an edge of the hair warming tool to the nearest heating part is from 3 to 15 cm over a periphery of the hair warming tool.
6 more elements
Dependencies are inferred from the claim text.