CN1154648A - Triple zone mascara brush - Google Patents

Abstract

A mascara brush (10) with three parts (12, 14, 16) having different bristle structures is disclosed. The brush has a middle part (14) of a larger diameter composed of soft (23) and hard (22) bristles, and two ends (12, 16), each end consisting of at least one type of bristle, which preferably gradually shortens towards both ends of the brush. This improved brush structure allows the mascara to be applied in one pass.

Description

Three-stage mascara brush

Background technique

The present invention generally relates to the field of mascara dye brushes, and in particular relates to a mascara dye brush with more than one kind of bristles.

A typical mascara brush of the prior art includes a plurality of bristles mounted to a helically twisted wire such that the free ends of the bristles are helical. The brush is generally cylindrical in shape with bristles of uniform length throughout its length, or conical with bristles that taper towards the tip of the brush. The density of the bristles varies, sometimes depending on the bristle diameter, but is generally known to be in the range of 10 to 60 bristles per turn. The spool portion of the twisted spool at the end opposite the bristles is usually provided with a handle. This handle usually acts as a cover for the mascara container, and when the brush is not in use, it covers the brush and holds the mascara.

Conventional mascara brushes use nylon bristles. These bristles are generally cylindrical in shape, with a generally circular cross-section, although other shapes are known in the prior art. The softness of the bristle material is important for the brush to take the mascara from the mascara box and transfer it to the lashes. While this bristle is soft enough to pick up the cream properly, this type of bristle tends to clump when applied, so it is too soft to create the desired combing to evenly distribute the cream on the lashes Effect. As a result, when applying with such a conventional brush, an additional implement is always required for combing the lashes.

The prior art has proposed using different types of bristles on the same brush, ie soft bristles for applying mascara and stiff bristles for combing the applied mascara through the lashes. For example, U.S. Patent 4,964,429 to Cole discloses a mascara applicator with flexible bristles and hard tooth exchange rows; U.S. Patent 4,861,179 to Schrepf discloses a helical mascara brush with The length of the brush has a random mix of soft and hard bristles in specific proportions. However, the helical configuration of such brushes does not provide an even distribution of the bristle tips which is considered to be better for the pick-up and delivery of mascara, especially for high viscosity mascara.

US Patents 4,733,425 and 5,161,554 disclose the use of certain types of bristles which, when used with conventional twisting spools, result in a non-helical bristle structure. Hollow bristle fibers are used as in US Pat. No. 4,733,425. The bristles are compressed when clamped between the spools and flare outward in a random arrangement. Similarly, US Patent No. 5,161,554 discloses the use of bristles of varying diameter along the longitudinal axis of the bristles so that they create an irregular structure depending on where the bristles engage the spool. However, none of these patents addresses the earlier mentioned problem of clumping without the use of the grooming implement alone.

Another proposed solution is disclosed in U.S. Patent 4,887,622, in which a smaller bristle density is used in combination with larger diameter and thus stiffer bristles in an attempt to produce a solution that both applies mascara evenly and separates the lashes. brushes.

Therefore, there is a need for an improved mascara brush that allows high viscosity mascara to be applied in one fell swoop due to maximum exposure in the eyelashes and the effect of eliminating combing implements that stick together. Applies well to eyelashes.

Brief description of the invention

The object of the present invention is to provide a mascara brush, which can not only apply the mascara, but also comb the eyelashes, so that the mascara can be evenly distributed on the eyelashes.

Another object of the present invention is to provide a mascara brush, which can expose the eyelashes to the maximum extent in the mascara, so that it can be applied in one go.

Another object of the present invention is to provide a mascara brush which can effectively apply high viscosity formula mascara.

Still another object of the present invention is to provide a mascara brush which can effectively reach the corners and roots of the eyelashes for optimum application of the mascara.

SUMMARY OF THE INVENTION The present invention seeks to provide an improved mascara brush having a three-part or three-zone bristle structure along the length of the brush portion. Each zone is defined by the diameter, length, stiffness and density of the bristles contained therein. Preferably, the effective overall hardness of the brush varies from zone to zone.

The central cylindrical portion is composed of a combination of hard and soft bristles mixed throughout the section, while each end portion is composed of one or more types of bristles. In a preferred embodiment, the end portion includes a third bristle. Furthermore, at least one of the end portions has the same type of bristles as that used in the middle portion.

The central diameter of the brush is preferably 0.325 inches, or larger than the diameter of a standard mascara brush. The bristles in the middle portion are preferably composed of a combination of hard irregularly shaped synthetic "goat" fibers approximately 0.004-0.006 inches in diameter and soft microfibers approximately 0.001-0.002 inches in diameter. These fibers are inserted between the legs of the spool, which is twisted into a helix and inserted into a rod extending from the cap of the mascara box. Due to the irregular shape of the bristles, they are distributed in a non-helical arrangement throughout the middle of the brush.

Each end of the brush contains one or more bristles. The composition of the bristles at the tip of the brush may be different than the composition of the bristles at the bottom end. In a preferred embodiment, one of the bristle types used in the middle of the brush is also used in one or both of the ends of the brush. However, in this embodiment at least one of the bristle species used in the middle is absent in the tip or bottom end, or in neither end. The bristles contained in at least one end of the brush are preferably hollow synthetic fibers approximately 0.004 to 0.006 inches in diameter, most preferably 0.005 inches in diameter. These fibers are clamped in a standard manner between the core of the wire, so that the bristles extending from the wire have a helical or helical configuration. Preferably, one or both ends are tapered so that the length of the bristles gradually decreases near the tip and/or base of the brush.

Depending on the intended use, the density of the bristles in the ends of the brush may be different from the density in the middle of the brush. In one embodiment, the density of bristles in the end portions is less than the dense portion in the middle portion. In another embodiment, one or both ends exhibit a greater density of bristles than the central portion of the brush. Most preferably, in this embodiment, the bristle density is greatest at the base, followed by the tip and least densely in the middle.

Description of drawings

Figure 1 is a longitudinal side view of a mascara brush according to the present invention;

Figure 2 is an enlarged cross-sectional view of circular bristles for use in the middle of a mascara brush in accordance with one embodiment of the present invention;

Fig. 3 is the magnified cross-sectional view of the circular extra-fine bristles in the middle part of the mascara brush according to an embodiment of the present invention;

Figure 4 is an enlarged cross-sectional view of the hollow bristles at the end of the mascara brush according to an embodiment of the present invention;

Figure 5 is a longitudinal side view of a mascara brush according to a second embodiment of the present invention.

Detailed Description of the Invention

Figure 1 shows a mascara brush according to the invention. The brush portion 10, consisting of bristles, is arranged in three distinct portions or regions 12, 14, 16 over the entire length of the brush: a base portion 12, a middle portion 14 and a tip portion 16. These sections vary in the diameter, length, stiffness and density of the bristles contained within each section, with the result that the overall effective stiffness varies from zone to zone. The overall effective stiffness is defined by the bristle diameter, length, stiffness and density used in each section such that, other things being equal, areas with denser bristles will have a greater overall effective stiffness than areas with less bristles.

The bristles of all three sections of the brush are carried on a wire 24 bent at its midpoint to form the tip 26 of the brush, which wire is twisted generally helically around itself in a manner known in the art. The metal spiral preferably has a pitch of 15.0 to 19.0 revolutions per inch. The wire 24 has a core diameter of approximately 0.0270-0.0290 inches. The bristles are clamped between the twisted wires at the midpoint and then project outwardly from the helical axis 24 . Opposite the brush tip 26, the spool extends longitudinally beyond the last bristles at the bottom 27 of the brush portion 10, and is housed in a hollow rod 28 protruding from a cylinder 30, which acts as an eyelash extension. The role of the cap of the dyed ointment box.

The central portion 14 of the brush 10 is substantially cylindrical due to the relatively uniform length of the bristles 22 in this portion. The diameter of the central brush portion 14 is preferably about 0.325 inches or greater, and more preferably about 0.350 inches. This diameter is much larger than that of a standard lash tint brush to allow for the application of high-viscosity formulas and to maximize the exposure of the brush to the lashes. Longer, like the bristles used in the present invention, were previously considered too soft to provide the rigidity and control required to apply mascara, but, as further explained below, the present invention uses The three-part structure of the bristle type and its combination allow the use of such longer bristles while maintaining the stiffness required for optimum application of mascara.

The bristles 22 and 23 used in the cylindrical part 14 of the brush are at least two kinds: preferably at least one soft bristle 23 for applying mascara, and at least one hard bristle 22 for passing through Eyelash combing mascara. For each purpose of use, "soft" bristles are defined as bristles with lower bending strength (ie ability to resist bending), while "hard" bristles are bristles with much greater bending strength. The stiffness of the bristles varies by their material, diameter and length. So, all other factors being equal, shorter bristles are stiffer than longer bristles, and thicker bristles are stiffer than thinner bristles. Additionally, hollow bristles are generally softer than solid bristles of the same material and size. As used, solid synthetic bristles having a diameter of less than 0.004 inches are considered "soft", while solid synthetic bristles having a diameter of 0.004 inches or greater are considered "hard".

The bristles used in the present invention can have various cross-sections known in the art. As shown in Figure 2, the soft bristles preferably have a generally circular cross-section and can be made of various synthetic fibers such as polyamide, polyester, polyolefin and the like. The soft bristle fibers preferably have a diameter of about 0.001 to 0.002 inches in order to provide the softness required for application of mascara. As shown in Figure 3, the bristles are preferably of irregular or non-circular cross-section similar to natural goat hair, and the fibers may be synthetically produced from any of the above materials. Preferred bristles have a diameter of about 0.004 to 0.006 inches, most preferably 0.005 inches.

Cooperating hard bristles 22 and soft bristles 23 making up the brush middle 14 pass together through the branches of the twisting spool 24 and are clamped at their midpoint. The bristles 22 and 23 of the central portion 14 may be more or less tightly packed than the bristles 18, 20 of either end portion 12 and 16. The density of the hard bristles 22 in the middle part 14 is about 5-10 per circle, while the density of the soft bristles 23 in the middle part 14 is about 18-32 per circle. In one embodiment, the density of hard bristles 22 is about 13-24 per turn, and the density of soft bristles 23 is about 18 per turn.

In a preferred embodiment, the bristles 22 in the central portion 14 extend from the spool 24 in a non-helical arrangement which results in a fuller and more even distribution of bristles throughout the central portion 14 of the brush.

Each end 12 and 16 of the brush 10 is comprised of one or more types of bristles. In a preferred embodiment, the bristles of the end portions 12 and 16 are different from the bristles of the middle portion 14 . A preferred type of bristle is a tubular fiber of hollow circular cross-section as shown in FIG. 4 . The bristles 18 and 20 are known to be made from various synthetic materials such as polyamides, polyesters and polyolefins, and are available in a variety of diameters. A preferred embodiment uses hollow nylon fibers having an outside diameter of about 0.004 to 0.006 inches, more preferably about 0.005 inches.

Optionally, the bristle type applied to one or both of the ends 12 and 16 is of the same diameter and stiffness as the bristle type used in the middle 14 of the brush. In this embodiment, however, neither end portion contains the same combination of bristles as the middle portion. For example, the central portion 14 could contain bristles A and B, while the end portions 12 and 16 could be all bristles A, but without bristles B. Alternatively, the tip portion 16 may contain bristles A and the bottom end portion 12 may contain bristles B, or vice versa.

In a preferred embodiment, the combination of bristles at the bottom end 12 is different from the combination at the tip 16, so that at least one bristle species contained in the bottom end 12 has a different diameter and stiffness than that used at the tip 16. The diameter and stiffness of the bristles in . For example, the tip portion 16 may effectively function as a grooming tool and may require a stiffer type of bristle than the bristles used in the bottom end portion 12 .

The bristle density of the end portions 12 and 16 may be different than that of the middle portion 14 . Preferably, 20-40 bristles/turn are used for the tip portion 16, and 30-60 bristles/turn are used for the bottom end portion 12. Tip portion 16 is most desirable with 27 bristle circles. In one embodiment, the bristles in the middle portion 14 are thinner than the end portions 12 and 16 or a portion thereof. In another alternative embodiment, the central portion 14 exhibits a greater density of bristles than one or both end portions 12 and 16 .

The fibers 18 and 20 for the brush ends 12 and 16 are clamped between the spool 24 legs at their midpoints. It is known that the hollow fibers have a direction that expands outwards in a generally V-shaped arrangement, thereby creating a random distribution of bristles on the brush surface. However, in the present invention it is preferred that the ends 12 and 16 of the brush remain in a helical alignment. Therefore, when hollow bristles are used in the ends 12 and 16 of the brush, the bristle density must be adjusted to ensure a generally helical arrangement at the ends.

As shown in Figure 5, one or both of the ends 12 and 16 of the brush are preferably designed with a sharp taper so that the bristles 18 at either end of the brush are smaller than those of the brush 10 next to it. The bristles 20 of the middle portion 14 are gradually shortened. Unlike an oval or football shaped brush that would be used, the pointed taper of the preferred embodiment clearly distinguishes the ends 12 and 16 of the brush from the middle 14 . This pointed cone has several advantages. For example, the tip 16 is useful as a styling tool that reaches the corners and combs through the fine lashes of the lower eyelid. On the other hand, the effect of the short and hard mane of bottom end 12 is, before the opening of mascara container reaches the longer, softer mane 22,23 of middle part 14, by removing the excess mascara, while keeping the central portion 14 of the brush relatively clean when the brush is removed from the container. These features are further enhanced by differences in the overall effective stiffness between regions.

Therefore, while the present invention has been described in terms of preferred embodiments, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the invention, which is herein It is intended to cover all such changes and modifications as fall within the true spirit and scope of the invention.

Claims (41)

1. mascara brush, it comprises: the core that twists into of a longitudinal extension; With the multiple mane that is contained on the described stubborn core, described multiple mane comprises a middle part column part, and described middle part column part comprises the different manes of more uniform first and second kinds of length of many mixing at least on this part total length; And two ends that comprise the third class mane.

2. mascara brush as claimed in claim 1, wherein, described multiple mane kind comprises at least a softer mane and a kind of than hard mane.

3. mascara brush as claimed in claim 2, wherein, the diameter of described middle part column part is at least about 0.325 inch.

4. as mascara brush as described in the claim 2, wherein, at least one described end sections is the band tapering, and the length of described the third class mane reduces gradually towards end of described at least one band tapering part.

5. mascara brush as claimed in claim 4, wherein, described middle part column part has bigger bristle densities than described end sections.

6. mascara brush as claimed in claim 5, wherein, the described bristle densities in each described part is a homogeneous in whole each part.

7. mascara brush as claimed in claim 5, wherein, described soft mane is to be approximately the fibrous of 0.001～0.002 inch diameter by having.

8. mascara brush as claimed in claim 5, wherein, described hard mane is by having the fibrous of the noncircular cross section that is approximately 0.004～0.006 inch diameter.

9. mascara brush as claimed in claim 5, wherein, described end sections mane is that the hollow filament by the primary circle tee section forms.

10. mascara brush as claimed in claim 9, wherein, described end sections mane is made up of the filament with about 0.004～0.006 inch external diameter.

11. a mascara brush, it comprises: one terminates in most advanced and sophisticated tip portion, and this part comprises first mane with first diameter and rigidity; The middle part part adjacent with described tip portion, described middle part partly comprise second mane with second diameter and rigidity and the 3rd mane with the 3rd diameter and rigidity, and wherein, the described second and the 3rd mane portion hereinto partly is mixed in together; With one adjacent to described middle part part and with respect to the base section of described tip part, described base section comprises described first mane.

12. mascara brush as claimed in claim 11, wherein, described tip part branch is to be with tapering, and described first mane of described tip part reduces gradually to described tip on length.

13. mascara brush as claimed in claim 12, wherein, described base section is to be with tapering, and described first mane of described base section reduces gradually towards the bottom opposite with the middle part part on length.

14. mascara brush as claimed in claim 13, wherein, the length that the described the 2nd and second mane has is bigger than the length that major part had of described first mane.

15. mascara brush as claimed in claim 14, wherein, the diameter of described middle part part is at least about 0.325 inch.

16. mascara brush as claimed in claim 15, wherein, the bristle densities that described middle part partly has is bigger than the density of described tip part and base section.

17. mascara brush as claimed in claim 16, wherein, described second mane is formed by having the synthetic fibers that are about 0.001～0.002 inch diameter.

18. mascara brush as claimed in claim 17, wherein, described the 3rd mane is made up of the synthetic fibers of noncircular cross section.

19. mascara brush as claimed in claim 18, wherein, described the 3rd mane is made up of the synthetic fibers with about 0.004～0.006 inch diameter.

20. mascara brush as claimed in claim 16, wherein, described first mane is to be formed by the hollow filament that is essentially circular cross-section.

21. mascara brush as claimed in claim 20, wherein, described first mane is made up of the synthetic filament with about 0.004～0.006 inch external diameter.

22. a mascara brush, it comprises: the stubborn core that closes of a longitudinal extension; With the multiple mane that is contained on the described stubborn zygonema core, described multiple mane comprises: a middle part column part, described middle part column part is included at least and mixes on the whole length of described middle part part, and length is relatively uniformly different types of first and second manes; With two end sections, described two end sections comprise many by described first or described second kind of mane in a kind of mane of forming.

23. mascara brush as claimed in claim 22, wherein, described multiple mane comprises a kind of softer mane and a kind of harder mane at least.

24. mascara brush as claimed in claim 23, wherein, the mane of described middle part part is adorned rarelyr than the mane of at least one described end portion branch dress.

25. mascara brush as claimed in claim 24, wherein, the diameter of described middle part column part at least approximately is 0.325 inch.

26. mascara brush as claimed in claim 25, wherein, the described bristle densities in each described part is a homogeneous in this part.

27. mascara brush as claimed in claim 26, wherein, one of described at least end sections is to be with tapering, and the described mane of described end reduces gradually towards end of described at least one band tapering part on length.

28. mascara brush as claimed in claim 26, wherein, described soft mane is by having the fibrous of about 0.001～0.002 inch diameter.

29. mascara brush as claimed in claim 26, wherein, described hard mane is fibrous by having about 0.004～0.006 inch diameter on-circular cross-section.

30. a mascara brush, it comprises: one ends at the tip part at a tip, and described tip part is made up of the first tip mane with diameter and hardness at least; The one middle part part adjacent with described tip part, described middle part part comprises first middle part kind mane with first diameter and rigidity and the second middle part kind mane with second diameter and rigidity at least, and wherein said first and second middle part kind manes portion hereinto partly are mixed together; Adjacent with one with described middle part part and with the relative base section of described tip part, described base section comprises the first bottom mane with diameter and rigidity at least, wherein said tip mane has first diameter and rigidity, and described bottom mane has second diameter and rigidity.

31. mascara brush as claimed in claim 30, wherein, described multiple class mane comprises a kind of softer mane and a kind of harder mane at least.

32. mascara brush as claimed in claim 31, wherein, the mane of described middle part part is adorned rarelyr than one of described end sections at least.

33. mascara brush as claimed in claim 32, wherein, the diameter of described middle part column part is approximately 0.325 inch at least.

34. mascara brush as claimed in claim 33, wherein, the described bristle densities in each described part is uniform in this part.

35. mascara brush as claimed in claim 34, wherein, at least one in the described end sections is to be with tapering, and the described mane of described end sections reduces gradually towards end of described at least one band tapering part on length.

36. mascara brush as claimed in claim 34, wherein, described soft mane is by being approximately the fibrous of 0.001～0.002 inch diameter.

37. mascara brush as claimed in claim 34, wherein, described hard mane is fibrous by about 0.004～0.006 inch diameter on-circular cross-section.

38. mascara agent as claimed in claim 30, wherein, described tip part is to be with tapering, and the described tip mane of described tip part reduces gradually to described tip on length.

39. mascara agent as claimed in claim 30, wherein, described base section is to be with tapering, and described first mane of described base section reduces gradually towards the bottom opposite with this middle part part on length.

40. mascara brush as claimed in claim 39, wherein, the diameter of described middle part part is approximately 0.325 inch at least.

41. a mascara brush, it comprises: one ends at the tip part at a tip, and described tip part comprises first mane with first diameter and rigidity at least; The one middle part part adjacent with described tip part, described middle part part comprise second mane with second diameter and rigidity and the 3rd mane with the 3rd diameter and rigidity at least, and the wherein said second and the 3rd mane is mixed together in this middle part part; And have adjacent with described middle part part and with the relative base section of described tip part, described base section comprises the 4th mane with the 4th diameter and rigidity at least.

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