Brush for applying a make-up product, particularly mascara

Details Brush for applying a make-up product, particularly mascara Brush for applying a make-up product, particularly mascara

1995-02-21

1996-12-31

Mancene, Gene

Toilet

Hair device

Eyelash or eyebrow

132216, 132320, 132317, 132318, 15206, 152072, A45D 4026

Patent

active

055884504

DESCRIPTION:

BRIEF SUMMARY
FIELD OF THE INVENTION

The invention relates to a brush for applying a make-up product, particularly mascara, of that type which comprises a wand equipped at one end with a core formed by two branches made from metal wire which are twisted into turns between which bristles extending transversely with respect to the core are trapped.


BACKGROUND OF THE INVENTION

Such brushes are used, in particular, for applying mascara to the eyelashes or dye to the hair.
FR-A-2,607,373 shows a brush of this type, a variant embodiment of which includes bristles having a cruciform cross-section. Four reserves of make-up product are thus constituted along each bristle. At the time of application, the reserves of product are progressively emptied and lead to a homogeneous and thick coating of the eyelashes.
Although permitting an improvement in making-up, such a brush has a certain overall hardness which may sometimes lead to irritation of the skin of the eyelids. The symmetry of the transverse section of the bristle, with respect to the center of this section, gives rise to virtually identical behaviour on the part of all the bristles when they are squashed in the zone of twisting of the metal core so that the ends of the bristles reproduce the spiral effect created by the twisted core.
U.S. Pat. No. 3,121,040 relates to filaments made from polyolefins which are used in different types of brush. Various sectional shapes, presented as equivalents, are proposed for improving the resistance of the filaments to deformation. Amongst these sectional shapes is a V-shaped section or a substantially L-shaped section, with no other particular indication which might lead to this shape being adopted in preference to the others.


SUMMARY OF THE INVENTION

Above all, the object of the invention is to provide a brush for applying a make-up product which has great flexibility but is capable of achieving extremely good coverage by virtue of a significant charge of product taken up. Moreover, it is desirable for the spiral effect to be reduced at the ends of the bristles.
According to the invention, a brush for applying a make-up product, particularly mascara, of the type defined above, is characterized in that at least a fraction of the bristles of the brush has a transverse section in the shape of an L, which is known per se, so that the zone of a bristle wedged between the turns of the metal core undergoes a flattening either through the effect of unfolding when the angle between the branches of the L opens or through the effect of folding when the angle between the branches of the L closes, this flattening reducing the rigidity of the bristle on the one hand and, on the other hand, preferentially increasing the spacing of the bristle with respect to the helical ply formed by the turn, thus creating a disorganized arrangement of the section of the bristles. Thus, the angle formed between the axis of the metal core and the bristle is substantially other than 90.degree..
Preferably, the branches of the transverse section in the shape of an L of the bristles have the same length. Advantageously, the branches of the L together form an angle of approximately 90.degree..
The span of the transverse section in the shape of an L of a bristle in the non-deformed state is preferably between 10 one hundredths and 50 one hundredths of a millimetre.
The thickness of each branch of the section of a bristle is advantageously approximately 0.04 mm.
The ends of at least a portion of the bristles may be shredded, particularly by grinding.
The bristles having a transverse section in the shape of an L may be mixed with other types of bristles, for example bristles having a substantially flat transverse section or bristles of greater hardness. In the latter case, all the bristles having a transverse section in the shape of an L and harder bristles may be subjected to a grinding operation so as to obtain bristles having a transverse section in the shape of an L in which the ends are located beyond those of the hard bristles made shorter by grinding.
The ends

REFERENCES:
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patent: 4974612 (1990-12-01), Gueret
patent: 5020551 (1991-06-01), Guerret
patent: 5063947 (1991-11-01), Gueret

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