JP2007175218A - Stick-shaped cosmetic product - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stick-shaped cosmetic product in which a stick-shaped cosmetic content hardly falls off. <P>SOLUTION: In the stick-shaped cosmetic product 100, in which a lower part of the stick-shaped cosmetic 1 is housed in one end of a cylindrical inner tray 21 and in which a stopper member 30 is provided in the other end of the inner tray 21, there is formed a hermetically sealed space R between the stick-shaped cosmetic 1 and the stopper member 30 in the inner tray 21. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a stick-shaped cosmetic product such as lipstick.

  In general, a container for storing a bar-shaped cosmetic in a bar-shaped cosmetic product is composed of a cap and a main body, and the main body includes a middle plate and a feeding container that allows the middle plate to move up and down. A cylindrical portion having an inner diameter substantially equal to the outer diameter of the cosmetic material is provided, and the lower portion of the bar-shaped cosmetic material is accommodated and held in one end portion of the cylindrical portion.

  When a bar-shaped cosmetic product is transported or used, the bar-shaped cosmetic may come off from the inner plate due to vibration or external force. Therefore, as a method for reliably holding the stick-shaped cosmetic material and preventing it from coming off, it has been proposed that an engagement rib is provided on the inner wall surface of the cylindrical inner dish to bite the stick-shaped cosmetic material (for example, Patent Documents). 1).

  However, even if the ribs for engagement are provided, if the bar-shaped cosmetic product falls, the engagement is insufficient and falls off, which may hinder the use of the bar-shaped cosmetic. In order to prevent this, the shape and arrangement of the engagement ribs have been devised in order to prevent the stick-shaped cosmetic material from coming off, but no sufficient improvement has been made. Further, the arrangement and shape of the engaging ribs must be changed according to the hardness of the bar-shaped cosmetic material, and it is difficult to make the inner dish common.

Japanese Utility Model Publication No. 62-67515

  An object of the present invention is to provide a bar-shaped cosmetic product in which the bar-shaped cosmetic is less likely to drop out and cause trouble in use in view of the above-described prior art.

  The present inventor noticed that there is a space in the lower part of the cylindrical inner dish, that is, the inside of the cylindrical body on the side opposite to the side where the bar-shaped cosmetics are stored. When the cosmetic is about to fall out of the inner dish, the volume of the inner space expands, so the inner space is depressurized compared to the outer pressure, and the bar-shaped cosmetic is sucked into the inner dish due to the pressure difference from the outer pressure. I found out.

  That is, the present invention relates to a bar-shaped cosmetic product in which a lower part of a bar-shaped cosmetic is housed on one end side of a cylindrical inner dish and a lid member is provided on the other end of the inner dish. A bar-shaped cosmetic product in which a sealed space is formed between the material and the lid member.

  According to the bar-shaped cosmetic product of the present invention, since the sealed space is formed between the bar-shaped cosmetic and the lid member inside the inner dish, the bar-shaped cosmetic is less likely to fall out of the inner dish. Therefore, even when a strong impact is applied due to dropping or the like, the risk of the stick-shaped cosmetic falling off can be reduced.

  Embodiments of the present invention will be described below with reference to the drawings. In each figure, the same numerals indicate the same or equivalent components. In the following description of the present invention, the tip direction of the bar-shaped cosmetic material in the longitudinal direction may be referred to as “up” and the opposite direction may be referred to as “down”.

  FIG. 1 is a partial vertical cross-sectional view of an example of the stick-shaped cosmetic product 100 of the present invention, and includes a cap 10 and a main body 20 that stores the stick-shaped cosmetic 1 such as a lipstick. The main body 20 has a cylindrical inner dish 21, and the lower part of the bar-shaped cosmetic 1 is accommodated on the upper end side of the inner dish 21. Further, the main body 20 can move the lid member 30 fitted in the lower end portion on the side opposite to the side in which the bar-shaped cosmetic 1 of the inner plate 21 is stored, and the inner plate 21 in the longitudinal direction of the bar-shaped cosmetic 1. The feeding mechanism 40 is as follows.

  The lid member 30 has a substantially disc shape and is formed with a groove 31 at the peripheral edge. A flange inner wall 22 fitted in the groove 31 is formed at the lower end of the inner tray 21 so as to protrude from the inner wall of the inner tray 21. By fitting the groove 31 of the lid member 30 with the flange inner wall 22 of the inner tray 21, the lower end portion of the inner tray 21 is sealed with the lid member 30. Further, the upper part of the inner tray 21 is sealed with the stick-shaped cosmetic 1. Therefore, a sealed space R is formed between the bar-shaped cosmetic 1 in the inner tray 21 and the lid member 30 so as to be blocked from the outside air and kept in a sealed state. 21 is difficult to fall off.

  In order to improve the sealing performance of the sealed space R, as the lid member 30, for example, one molded with a material having a good gas barrier property such as polyamide (PA), ethylene-vinyl alcohol (EVOH), aluminum, polyethylene (PE), propylene, etc. (PP), polyethylene terephthalate (PET), styrene acrylonitrile (SAN), polystyrene (PS), butadiene styrene (BS), polyethylene naphthalate (PAN), polybutylene terephthalate (PBT), polycarbonate (PC), polyacetal (POM) ), It is desirable to improve the gas barrier property with a composite product such as an elastic member such as silicon rubber.

  Moreover, in order to make it difficult for the stick-shaped cosmetic 1 to fall out of the inner dish 21, it is preferable to form the sealed space R in a reduced pressure state from the outside air pressure from the beginning. As a method for forming the sealed space R in such a manner, (1) a method in which the stick-shaped cosmetic 1 is set in the inner dish 21 and then the lid member 30 is fitted while the stick-shaped cosmetic is hot. 1 is set in the inner tray 21, then warm air is sent from the lower end of the inner tray 21, and then the lid member 30 is fitted. (3) The stick-shaped cosmetic 1 is set in the inner tray 21, and the lid member After fitting 30, a method of vacuuming the sealed space R by air vacuuming from the lid member 30 side, (4) A method of fitting the lid member 30 in the decompression chamber after setting the bar-shaped cosmetic 1 in the inner dish 21. (5) There is a method of heating and cooling the bar-shaped cosmetic product that has become a product together with the container.

  In addition, as a method of setting the bar-shaped cosmetic material 1 in the intermediate dish 21, there is a method of inserting the bar-shaped cosmetic material 1 separately molded using a mold from the upper end of the intermediate dish 21. Provided with a filling port for stick-shaped cosmetics, further covering the opening on the upper side of the inner tray 21 with a molded capsule, filling the inner-plate 21 with the rod-shaped cosmetic heated and melted from the filling port, and cooling and solidifying the method. However, it is preferable because the manufacturing process can be simplified and the cost can be reduced.

  The feeding mechanism 40 includes a tray 41, a hook 42, an inner cylinder member 43, a spiral member 44, and a sleeve 45.

  The receiving tray 41 is a substantially cylindrical member that is inserted into the outer periphery of the inner tray 21, and an engagement pin 46 projects from the outer periphery thereof.

  The hakama 42 is a metal cylindrical member.

  The inner cylinder member 43 is a substantially cylindrical member made of synthetic resin, and a lower portion thereof is inserted into the hakama 42 via the middle tool 47, and the inner cylinder member 43, the middle tool 47, and the hakama 42 are fitted and fixed. Yes. The inner cylinder member 43 is formed with a notch 48 in the vertical direction. Further, the intermediate portion 47 has an intermediate portion formed in a large diameter, and the outer peripheral surface of the large diameter portion is flush with the outer peripheral surface of the hakama 42.

  The spiral member 44 is a synthetic resin member that rotatably covers the upper outer peripheral portion of the inner cylindrical member 43, and has a spiral groove formed on the inner peripheral surface thereof. It penetrates through the notch 48 of the cylindrical member 43 and engages with this spiral groove (not shown).

  The sleeve 45 is a metal substantially cylindrical member that covers the outer periphery of the spiral member 44, and a sliding ring 49 is fitted to the lower end portion of the sleeve 45, and the spiral member 44 and the sleeve 45 are in contact with the hack 42 and the inner cylinder member 43. Can be rotated independently.

  On the other hand, the cap 10 is a cylindrical member whose upper end is closed, and can be detachably fitted on the large diameter portion of the middle tool 47 of the main body portion 20.

  When the stick-shaped cosmetic product 100 is used, the sleeve 45 is held with the cap 10 removed, and the hook 42 or the inner tool 47 is rotated. As a result, the spiral member 44 rotates with respect to the inner cylinder member 43, and the engagement pin 46 of the tray 41 slides in the spiral groove of the spiral member 44 and slides the notch 48 of the inner cylinder member 43 in the vertical direction. Then, the inner tray 21 moves up and down, and the stick-shaped cosmetic 1 can be used by protruding or retracting.

  Even if the stick-shaped cosmetic product 100 is dropped or otherwise subjected to an impact for some reason, and the force is applied in the direction in which the stick-shaped cosmetic 1 is pulled out of the inner tray 21, the sealed space R is formed in the lower portion of the inner tray 21 as described above. Since the volume of the sealed space R increases due to the stick-shaped cosmetic 1 coming out of the inner tray 21 due to the formation, and the pressure is reduced, the external pressure is increased by the pressure difference with the sealed space R. It acts to push the material 1 back. Therefore, according to the present invention, it is difficult for the stick-shaped cosmetic 1 to fall out of the inner tray 21.

  The lower end part of the inner tray 21 and the lid member 30 can take various forms of sealing.

  For example, in the aspect shown in FIG. 2A, a locking projection 23 directed inward is provided on the entire periphery of the lower end of the inner tray 21. On the other hand, a lid peripheral wall 32 is erected on the periphery of the lid member 30 so as to contact the inner periphery of the locking projection 23, and further, an upper end of the lid peripheral wall 32 is in contact with the upper end of the locking projection 23. A flange 33 projecting to the outside is provided, and the engagement structure 23 is sandwiched between the flange 33 and the peripheral edge of the lid member 30 from above and below.

  In the mode shown in FIG. 2B, a locking projection 23 that faces inward is provided on the entire periphery of the lower end of the inner tray 21, and a groove 24 is provided on the entire outer wall of the locking projection 23. On the other hand, the lid member 30 is provided with an inner peripheral wall 34 and an outer peripheral wall 35, and a fitting structure in which the locking projection 23 of the inner tray 21 is sandwiched therebetween, and at the same time, a first locking is provided at the outer upper end of the inner peripheral wall 34 The protrusion 34 a is provided with a second locking protrusion 35 a on the inner upper end of the outer peripheral wall 35, so that the locking and sealing of the inner tray 21 and the lid member 30 are ensured.

  In the embodiment shown in FIG. 3, a thin sheet 36 made of a synthetic resin laminated with a metal material such as aluminum is used as the lid member 30, the lower edge of the inner tray 21 is planar, and the lower end of the inner tray 21 is the sheet. It is covered with 36. The sheet 36 is attached to the inner tray 21 by heat fusion or attached with an adhesive.

  When the sealed space R is formed using the sheet 36 in this way, the shape of the inner tray 21 can be simplified, so that the design of the mold is simplified and the lid member 30 is created by a simple process of punching the sheet. Is possible.

  In addition, the present invention can be a bar-shaped cosmetic product having no feeding mechanism.

  In any of the above-described embodiments, the sealed space R can be more reliably prevented from coming off the stick-shaped cosmetic 1 by setting the sealed space R to atmospheric pressure or lower from the beginning.

  The stick-shaped cosmetic product of the present invention can be applied to stick-shaped cosmetics such as lipsticks, lip balms, stick eye shadows, and stick foundations.

It is a partial longitudinal cross-sectional view of an example of the stick-shaped cosmetic product of this invention. It is sectional drawing of the one aspect | mode of the inner tray sealed with the cover member which consists of a resin molded product. It is sectional drawing of the different aspect of the inner tray sealed with the cover member which consists of resin moldings. It is sectional drawing of the one aspect | mode of the inner tray sealed with the cover member which consists of sheets.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bar-shaped cosmetics 10 Cap 20 Main body part 21 Middle dish 22 Flange inner wall 23 Locking protrusion 24 Groove 30 Lid member 31 Groove 32 Cover peripheral wall 33 Flange 34 Inner peripheral wall 34a Locking protrusion 35 Outer peripheral wall 35a Locking protrusion 36 Sheet DESCRIPTION OF SYMBOLS 40 Feeding mechanism 41 Receptacle 42 Hakama 43 Inner cylinder member 44 Spiral member 45 Sleeve 46 Engagement pin 47 Middle tool 48 Notch part 49 Sliding ring 100 Stick-shaped cosmetic product

Claims (4)

  It is a bar-shaped cosmetic product in which the lower part of the bar-shaped cosmetic material is housed on one end side of the cylindrical inner plate and a lid member is provided on the other end of the inner plate, and the bar-shaped cosmetic material inside the inner plate and the lid member A bar-shaped cosmetic product with a sealed space in between.   The stick-shaped cosmetic product according to claim 1, wherein the sealed space is depressurized from an external pressure.   The stick-shaped cosmetic product according to claim 1 or 2, wherein a peripheral edge portion of the lid member and a lower end portion of the inner dish are fitted. The stick-shaped cosmetic product according to claim 1 or 2, wherein the lid member is made of a synthetic resin sheet affixed to an end surface of the inner dish.

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