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AssigneeTaiki Corp., Ltd.
InventorsShoko ICHII, Yuka HARA, Toshihiko OHIRA, Koji NAKAMURA
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An object of the present invention is to provide a makeup brush bristle material and a makeup brush bristle material assembly, both made of synthetic resin, as well as a makeup brush using such bristle material or bristle material assembly, all suitable for applying both powder cosmetics and liquid cosmetics, or more specifically, offering good uptake and release properties with respect to powder or liquid cosmetics. As a solution, a makeup brush bristle material is provided that comprises S-twisted or Z-twisted core-sheath complex monofilaments whose core part is constituted by synthetic resin A and sheath part is constituted by synthetic resin B that differs in type from synthetic resin A, characterized in that the cross-section of the core-sheath complex monofilaments in the direction orthogonal to the axis of fiber has a cocoon shape.
A makeup brush bristle material comprising S-twisted or Z-twisted core-sheath complex monofilaments whose core part is constituted by synthetic resin A and sheath part is constituted by synthetic resin B that differs in type from synthetic resin A, characterized in that a cross-section of the core-sheath complex monofilaments in a direction orthogonal to an axis of fiber has a cocoon shape.
A makeup brush bristle material assembly comprising a mixed assembly of S-twisted and Z-twisted core-sheath complex monofilaments whose core part is constituted by synthetic resin A and sheath part is constituted by synthetic resin B that differs in type from synthetic resin A, characterized in that cross-sections of the core-sheath complex monofilaments in a direction orthogonal to an axis of fiber each have a similar cocoon shape.
Dependencies are inferred from the claim text.