FR2657511A1 - MASCARA BRUSH FOR LACQUERS AND PROCESS FOR MAKING SAME. - Google Patents

Abstract

The invention relates to a mascara brush comprising brush bristles (3) embedded between the two twisted wires of a metal core (2). The invention extends to a process for the manufacture of such a brush. The problem to be solved is to create a brush without a gap between the bristles while maintaining a simple manufacture. The brush is characterized in that the bristles (3) are multi-fiber bristles, the fibers (4) of which are bound by a binder which is then dissolved in a solvent. The invention is applicable to making up the eyelashes.

Description

"MASCARA BRUSH FOR LACQUERS AND METHOD

FOR MANUFACTURING ".

  The invention relates to a mascara brush for eyelashes comprising bristles maintained

  between the two twisted wires of a metal core.

  Most mascara brushes available

  on the market have the construction described

  a flat layer of bristles sandwiched between two metal wires is then embedded to form a helical brush by twisting the wires.

  son consist of a single thread folded over him

  Even this mode of manufacture is extremely rational

and economic.

  These known mascara brushes metal core twisted son however have a difficulty in that the bristles do not form a closed compact surface but, as already indicated, are essentially arranged in a helical rotating surface It then forms intermediate voids more or less wide depending on the diameter of the bristles and also, in particular, the winding pitch and the core twisted wire son If these gaps are too large, which is always the case considering, for example, the distance of cilia, the risk exists that several eyelashes become involved in such a gap and are then stuck together when applying the color.

  however, avoid this absolutely.

  The object of the invention is therefore to provide a mascara brush of the type described above in such a way that, while preserving the same possibility of simple manufacture, the ends of the bristles form

a compact closed surface.

  For this purpose, the invention relates to a brush of the above type characterized in that the bristles are made of multifibre bristles whose fibers are

bound by a soluble binder.

  By the use according to the invention of multifibre hair fibers bound as bristles, these bristles can have the normal thickness for a good implementation, as in the mascara brushes used until now. after having twisted the wires and thus caused the embedding of

  hairs that are divided into individual fibers.

  This is obtained by immersing in a suitable solvent, the binder then being dissolved and releasing the thin individual fibers. These fibers then elastically separate and fill the voids which previously existed between the compact planes which are helically offset and provided with bristles. risk of sticking eyelashes co-engaging in voids. Compared with corresponding fine fibers, which appear in the final appearance, the use of multi-fiber fibers with bound fibers is advantageous for several reasons. On the one hand, these thin and thin fibers which appear in the final appearance, could not be embedded in the core wire son in the same simple way when twisting these son On the other hand, we would have the same difficulty of final appearance when the son are twisted Indeed thin and thin fibers , although they are in greater numbers, would be mainly concentrated in the planes shifted in helix Only the elastic widening due to the separation which takes place after the putting in torsade causes the filling of the voids still existing between the

helically offset elements.

  The invention extends to a method for manufacturing a mascara brush of the above type, this method being characterized in that the multi-fiber bristles bonded into the metal core are embedded by twisting the wires of this soul and dividing then the individual fiber hairs by dissolving the

binding with a solvent.

  The invention is described in more detail below.

  FIG. 1 is a side view of a mascara brush according to the invention with multi-fiber bristles with fan-shaped open fibers. FIG. 1 is a side view of a mascara brush according to the invention. FIG. 2 is a diagrammatic elevational view intended to highlight the engagement of the multifibre bristles before the actual twisting, FIG. 3 is an enlarged partial side view intended to highlight the fan opening of the fibers and FIG. 4 is a cross section of a

multi-fiber pile with bound fibers.

  FIG. 1 represents a mascara brush comprising a usual handle 1 and a metal core with

  two son 2 consisting of a single thread folded over him

  same (see Figure 2) In this wire core 2 the brush bristles 3 are first inserted in the form of a flat panel between the ends of the wire folded on itself They are then embedded by twisting the metal son We get thus the usual configuration of the mascara brushes according to which the bristles are essentially distributed flat with planes shifted in a helix which result from the step

  of the twist formed by the metal wire core 2.

  Thus, voids of corresponding width are formed between these planes offset in a helix and lined with compact bristles, which causes the drawbacks described in detail in the preamble. According to the invention, the bristles 3 consist of multi-fiber bristles represented in cross-section on the In these multi-fiber bristles, several individual fibers 4 are bound by a soluble binder to form a multifibre brush bristles. Of course, it is not essential to provide the sector-specific cross-section for the individual fibers 4, although this is certainly advantageous for manufacturing The decisive point is that it is first available for embedding bristles, bristles 3 of appropriate thickness which are divided into individual fibers 4 after the embedding by immersing the brush in a solvent that dissolves the binder This after-stroke division is also decisive because so, as can be seen on 3, the individual fibers 4 of a hair deviate conically. Therefore, according to the configuration shown in FIG. 1, the individual fibers fill more or less the voids between the helically offset planes, in any case. case sufficiently to avoid the risk of sticking of several eyelashes engaging between such planes shifted helically or spirally.

Claims (2)

  Mascara brush for the eyelashes comprising bristles (3) embedded between the two twisted wires of a metal core (2), characterized in that the bristles (3) consist of multifibre bristles.   whose fibers (4) are bound by a soluble binder.   2 Process for manufacturing a mascara brush according to claim 1, characterized in that the multi-fiber bristles (3) are embedded in the metal core (2) by twisting the threads of this core and then dividing the fiber bristles. individual   (4) by dissolving the binder with a solvent.