JP5450027B2 - Viscous cosmetic applicator - Google Patents

Description

  The present invention relates to an applicator for applying a liquid, paste-like or gel-like cosmetic material having a particularly high viscosity.

  Conventionally, for liquid, paste-like or gel-like cosmetics such as lipsticks and lip glosses, containers comprising a storage part filled with cosmetics and a cap with an applicator attached are known. These containers are used by taking out the cosmetics in the storage section with an applicator and applying the cosmetics on the lips, and are widely used because they have excellent portability and excellent usability. In addition, the form of the applicator includes a brush, a chip, and the like, and there are various shapes and materials according to the characteristics of cosmetics and the mode of use.

  However, any of the above containers is a conventional lip gloss or lipstick, that is, a cosmetic having a viscosity of usually about 3000 to 40000 mPa · s, and even a high one of 100,000 mPa · s (Japanese Patent Laid-Open No. 2008-214210). This is because it is easy to take out and is easy to apply.

  Lip gloss is a cosmetic that gives the lips a glossy appearance. When lip gloss is applied to the lips, the thicker the coating, the greater the scattering of light inside the coating and the gloss. Excellent effect. Therefore, in order to enhance the function of giving lip gloss, it is desired to develop a formulation having a high viscosity so that the lip gloss can be applied thickly.

  On the other hand, when a high viscosity lip gloss or the like is used in the conventional container as described above, the conventional applicator cannot scoop up the cosmetic sufficiently, and there is a disadvantage that the amount of cosmetic that can be taken out is extremely small. .

  In addition, since lip gloss having a high viscosity tends to be poorly stretched, it becomes uneven when applied with a conventional applicator, resulting in a situation where it cannot be uniformly applied to the lips.

  Furthermore, if the viscosity of lip gloss or the like is high, a strong stress is applied from the cosmetic to the applicator so as to resist the movement of the applicator, so that the applicator is deformed and applied as the applicator is repeatedly inserted into the storage section. The function as a tool will be impaired.

JP 2006-346469 A JP 2008-214210 A

  The present invention is a cosmetic container in which a liquid container such as lip gloss or a paste-like or gel-like cosmetic is filled in a container housing and an applicator is inserted. Even for cosmetics with high viscosity, the cosmetics can be taken out sufficiently, can be applied evenly to the lips, and even when used continuously, the applied part is deformed by the stress from the cosmetics. It is an object to provide a non-applicator.

  The first invention is an applicator used by being inserted into a storage unit filled with a cosmetic having a viscosity of 200,000 to 800,000 mPa · s, wherein the applicator is formed by joining an applicator and a shaft, The cut surface parallel to the axis of the coating part is a curve, the cut surface perpendicular to the axis is a straight line, and is a flat shape curved as a whole, the curved inner surface is flocked, and the curved outer surface is smooth. It is an applicator for viscous cosmetics characterized by being.

  2nd invention is an applicator for viscous cosmetics characterized in that the application part has a width of 4.5 to 5.5 mm and the curve of the cut surface parallel to the axis has a radius of curvature of 17 to 26 mm. .

  A third invention is a viscous cosmetic applicator characterized in that the application part is formed of a material having a hardness of 90 according to JIS test method K6253.

  According to the applicator of the present invention, in a cosmetic container that is filled with a liquid or paste-like cosmetic such as lip gloss in a container housing portion and used by inserting the applicator, 200,000 to 800,000 mPa · s is used. Even if the viscosity of the cosmetic is particularly high, the cosmetic can be sufficiently taken out, can be uniformly applied to the application part, and even if used continuously, deformation occurs due to stress from the contents. There is no.

Cross section of container for viscous cosmetics Coating unit front view Application side view

  The form of the viscous cosmetic applicator of the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows the overall configuration of a viscous cosmetic container incorporating the viscous cosmetic applicator of the present invention. The container for viscous cosmetics (1) consists of a storage part (5) for filling cosmetics and a cap (2) .The cap (2) is used for taking out cosmetics and applying cosmetics to lips etc. An applicator (3) is provided. This applicator (3) is formed by joining the shaft (4) and the application part (6), one end of the shaft (4) is joined to the cap (2), and the other end is the application part ( It is joined with 6). The shaft (4) and the application part (6) are joined by inserting and holding the holding part (10) provided at the end of the application part (6) into the holding hole (11) provided at the end of the axis. . The applicator (3) is attached to the cap (2) so that the cosmetic filled in the storage part (5) is impregnated when the cap (2) is screwed into the storage part (5). ing.

  The viscous cosmetic material (9) filled in the storage part (5) has a viscosity of 200,000 to 800,000 in order to make the coating film after application thicker and glossy by increasing the viscosity. mPa · s (using a BL-type viscometer manufactured by Shibaura System Co., Ltd., measuring conditions are measured with rotor No. 4, 0.3 rpm) Therefore, 250,000 to 550,000 mPa · s is preferable.

  The application part (6) has a curved flat shape as shown in FIGS. 2 and 3, and a cut surface parallel to the axis forms a curve, and a cut surface perpendicular to the axis forms a straight line.

  By making the application part (6) flat, it becomes easy to scoop up cosmetics. Moreover, since it has an appropriate elasticity when applied to the lips, the touch when touching the lips is also soft, and it is easy to apply and spread because it is easy to adhere to the lips.

  Since the cut surface parallel to the axis (4) is curved, the viscous cosmetic material (9) in the housing part (5) can be easily scooped. A planar shape that is not curved makes it difficult to scoop up cosmetics. In addition, the curved inner surface (7) adheres to the lips, so it is easy to apply cosmetics, and the curved outer surface (8) of the application part is used to spread the cosmetics over the entire lips. Can do.

  By making the cut surface perpendicular to the axis (4) straight, it becomes possible to apply the cosmetics scooped up on the inner surface (7) to the lips without leaving the inner surface (7). Further, even when spreading on the outer surface (8), the occurrence of coating unevenness can be prevented. This is based on the operation of moving the applicator in the direction perpendicular to the axis when the user applies and spreads the cosmetic. That is, the above-described effect can be obtained by making the cross section perpendicular to the axis (4), which is the direction in which the application part (6) moves, straight.

  The curved inner surface (7) of the application part (6) is made of an elastomer resin planted by flocking. By making the curved inner surface (7) of the application part (6) an elastomer resin planted by flocking, the planted fiber impregnates and holds the cosmetic, so it is easy to scoop up viscous cosmetics, A large amount of viscous cosmetic can be applied to the lips. The flocking process is preferably performed on the entire inner surface (7). This is because when the flocking process is partially performed, the surface state is different between the treated portion and the untreated portion, unevenness may occur, and adverse effects such as uneven coating may occur.

  The fibers to be planted on the curved inner surface (7) of the application part (6) are not particularly limited in terms of material, thickness and length, but are generally used for flocking of cosmetic tools. It is preferably a nylon resin fiber having a thickness of 0.9 dtex and a length of 0.8 mm.

  The curved outer surface (8) of the application part (6) is not a flocking process and is a smooth surface. The curved outer surface (8) of the application part (6) needs to be a smooth surface in order to spread the cosmetic material over the entire lips. This is because irregularities remain on the surface, and the effect of giving the lips of the cosmetics a glossy effect is impaired.

  Since the application part (6) needs to fit the shape of the lips as described above, it is necessary to select a material having an appropriate elasticity. Further, since it is a part that is always in contact with the cosmetic, it must be a chemically stable material that does not interact with the cosmetic. Therefore, the material forming the application part is preferably an elastomer resin having a material hardness of 90 according to JIS test method K6253, and as such an elastomer resin, for example, a thermoplastic elastomer or a polyurethane elastomer is preferable.

  The shape of the application part (6) greatly affects the usability of the applicator when applying the cosmetic, and also affects the deformation of the application part when the cosmetic is highly viscous. The width (W) of the application part is preferably 4.5 to 5.5 mm. If the width (W) of the application part is smaller than 4.5 mm, the amount of the cosmetic material to be scooped will be small, and the amount to be applied will be insufficient. In addition, when the width (W) is 4.5 mm, the rigidity of the application part is low, so that it is deformed when it is repeatedly inserted into a highly viscous cosmetic. On the other hand, when the width (W) is larger than 5.5 mm, it is difficult to apply to a fine part, resulting in poor operability.

  The curve of the cut surface parallel to the axis (4) of the application part (6) preferably has a curvature radius of 17 to 26 mm. When the radius of curvature is larger than 26 mm, the curved inner surface (7) of the application part does not adhere to the lips, and it becomes difficult to apply the cosmetic. Conversely, if the radius of curvature is less than 17 mm, the projected area in the axial direction increases, and when the application part is inserted into the storage part, deformation is likely to occur because it receives a large repulsive force from the cosmetic. Furthermore, if the curvature radius is smaller than 17 mm, the curved inner surface (7) of the application part does not adhere to the lips, and the cosmetic cannot be applied sufficiently.

  In the following examples, the shape of the application part will be described in detail together with the test method.

  The cosmetic used in the examples has a viscosity of 280,000 to 520,000 mPa · s (a BL type viscometer manufactured by Shibaura System Co., Ltd.), and the measurement conditions are rotor 4 and measured values at 0.3 rpm. Table 1 shows the formulation. This is because a lip gloss having a particularly high viscosity that enhances the function of giving gloss and can be applied thickly on the lips is desired, and the shape of the application part that can cope with this is evaluated. In addition, a normal lip gloss is about 3000-40000 mPa * s normally, and even a high thing is 100,000 mPa * s.

  About width of application part (W), curvature radius of curve of cut surface parallel to axis, scooping amount of cosmetics, operability (easy to apply to details), usability such as fit to lips and The deformation resistance of the coated part to the cosmetic was evaluated (Table 2). In addition, the length (L) of the application part is about 15 mm, and the thickness (T) is about 0.9 mm.

  The deformation resistance of the application part was visually evaluated for the presence or absence of bending of the application part when a lip gloss having a viscosity of 350,000 mPa · s at 30 ° C. was filled and the applicator was inserted and mounted (Table 2).

  When the width of the application part was 3 mm (Comparative Example 1), the amount of the cosmetic was scooped up was small, and deformation occurred because of low rigidity. In 6 mm (comparative example 3), it is inferior to the application | coating to a detail. The width of the application part was 4.5 to 5.5 mm (Examples 1 to 4), and all the evaluation items were excellent.

  When the radius of curvature of the coated portion was 15 mm (Comparative Examples 1 and 2), all samples were deformed, and there was a problem in deformation resistance. Although some deformation was observed in Examples 1 and 4 (deformation was about 30% in Example 1 and about 17% in Example 4), both were mild and practical. There was no problem. At 30 mm (Comparative Example 4), the inner surface of the curve did not adhere to the lips, resulting in poor fit. The application part (Examples 1-4) with a curvature radius of 17 to 25.5 mm was excellent in all evaluation items.

  Since the application part needs to fit the shape of the lips as described above, it is necessary to select a material having an appropriate elasticity. Moreover, since it is also a part which always contacts with cosmetics, it needs to be a chemically stable material which does not interact with cosmetics. Therefore, a polyurethane elastomer having a material hardness of 90 according to JIS test method K6253 was used as a material for forming the application part.

DESCRIPTION OF SYMBOLS 1 Viscous cosmetic container 2 Cap 3 Applicator 4 Shaft 5 Storage part 6 Application part 7 Curved inner surface 8 Application part curved outer surface 9 Viscous cosmetic 10 Holding part 11 Holding hole 12 Fixing part 13 Male Screw 14 Female screw 15 Shigoki

Claims (3)

  In an applicator that is used by being inserted into a container filled with a cosmetic material having a viscosity of 200,000 to 800,000 mPa · s, the applicator is formed by joining an applicator and a shaft, and the applicator is parallel to the shaft. An application for viscous cosmetics, characterized in that the cut surface is curved, the cut surface perpendicular to the axis is a straight curved flat shape, the curved inner surface is flocked, and the curved outer surface is smooth Ingredients.   2. The applicator for a viscous cosmetic according to claim 1, wherein the application part has a width of 4.5 to 5.5 mm, and a curve of a cut surface parallel to the axis has a radius of curvature of 17 to 26 mm.   The applicator for viscous cosmetics according to claim 1 or 2, wherein the application part is formed of a material having a hardness of 90 according to JIS test method K6253.

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