JP2021029850A - Mold structure for stick-like cosmetic - Google Patents

Abstract

To provide a mold structure for a stick-like cosmetic, capable of accurately molding a lip stick so as to form in a predetermined shape of not interfering with a sleeve part of a container while improving designability.SOLUTION: A mold structure for molding a lip stick 20 comprises: a columnar part molding metal mold 11 for molding a columnar part 20a having an outer peripheral wall shape along an inner peripheral wall shape of a sleeve part 22 of a lip stick container 21 in the lip stick 20; and an edge face part molding member 12 for molding only an edge face part 20b in the lip stick 20. The columnar part molding metal mold 11 is disposed with a molding hole 13 having an inner peripheral wall shape along the outer peripheral wall shape of the columnar part 20a of the lip stick 20, and the edge face part molding member 12 is an elastically deformable elastic mold. The edge face part molding member 12 covers a lower end opening 13a of the molding hole 13 in the columnar part molding metal mold 11, and is fixedly mounted on an opening peripheral edge part of the lower end opening 13a.SELECTED DRAWING: Figure 1

Description

The present invention relates to a stick-shaped cosmetic mold structure, and more particularly to a stick-shaped cosmetic mold structure for molding a stick-shaped cosmetic such as lipstick used by sliding along a sleeve portion.

For example, stick-shaped cosmetics such as lipsticks are molded so as to have a desired stick-shaped shape by filling the inside of a molding mold with melted cosmetics and solidifying them. The molded stick-shaped cosmetic is housed in a tubular sleeve portion via an inner plate, and is slid along the sleeve portion by an advancing / retreating mechanism for advancing / retreating the inner plate so that it can be taken in and out of the sleeve portion. There is.

Further, as a molding method for molding such stick-shaped cosmetics such as lipstick, conventionally, a molding method using a mold (see, for example, Patent Document 1) or a container provided with a sleeve portion is in a molten state. A molding method in which a cosmetic is directly filled and solidified (see, for example, Patent Document 2), a molding method using a rubber mold (elastic type) (see, for example, Patent Document 3), and the like are generally known.

Japanese Unexamined Patent Publication No. 2008-23113 JP-A-2015-93043 Japanese Unexamined Patent Publication No. 2000-290139

According to the above-mentioned molding method for molding stick-shaped cosmetics, in the molding method using a mold, the stick-shaped cosmetics have a predetermined shape by using a mold having a certain shape. On the other hand, it is difficult to mold a cosmetic having a complicated uneven pattern on the surface, and the design is restricted. The molding method in which the container is directly filled with cosmetics and solidified has a simple production process, a high production pitch, and is suitable for mass production, but on the other hand, there is no freedom in the shape of the molded cosmetics. Since the outer peripheral surface of the solidified stick-shaped cosmetic and the inner peripheral surface of the sleeve portion of the container are in close contact with each other, the solidified cosmetic may be broken when it is slid forward and backward along the sleeve portion, or the cosmetic may be broken. There may be defective parts on the outer peripheral surface of the.

Further, in the molding method using a rubber mold, it is easy to apply an uneven pattern or the like to the mold, and the mold can be elastically deformed to remove the mold, so that it is possible to mold a cosmetic having excellent design. However, on the other hand, due to the influence of the elasticity of the mold, it becomes difficult to accurately mold the stick-shaped cosmetic into a predetermined shape. For this reason, especially in stick-shaped cosmetics, a bulging portion or an inclined portion is likely to occur on the outer peripheral portion of a columnar portion formed so as to have an outer diameter similar to the inner diameter of the sleeve portion, so that stick-shaped makeup When the material is slid along the sleeve part, these bulging or tilted parts interfere with the sleeve part, and the outer peripheral surface of the stick-shaped cosmetic is scraped or bent. There is.

For this reason, a technology that enables accurate molding of stick-shaped cosmetics so as to have a predetermined shape that does not interfere with the sleeve portion of the container while improving the design by making it possible to form an uneven pattern on the surface. Development is desired.

The present invention is a stick-shaped cosmetic mold capable of accurately molding a stick-shaped cosmetic having a predetermined shape that does not interfere with the sleeve portion of the container while improving the design by forming an uneven pattern on the surface. The purpose is to provide a structure.

The present invention is a cosmetic mold structure for molding a stick-shaped cosmetic that is accommodated in a tubular sleeve portion so as to be able to advance and retreat and is slid along the sleeve portion to be used. A columnar portion molding die for molding a columnar portion having an outer peripheral wall shape along the inner peripheral wall shape of the sleeve portion, and an end face portion molding member for molding only the end face portion of the stick-shaped cosmetic product. The columnar portion molding die is provided with a molding hole having an inner peripheral wall shape along the outer peripheral wall shape of the columnar portion of the stick-shaped cosmetic, and is provided so as to penetrate in the vertical direction, and the end face portion molding member is elastic. A stick-shaped cosmetic mold which is a deformable elastic mold and is attached in a state of covering the lower end opening of the molding hole in the columnar portion molding mold and being fixed to the opening peripheral edge of the lower end opening. By providing the structure, the above object is achieved.

According to the stick-shaped cosmetic mold structure of the present invention, a stick-shaped cosmetic having a predetermined shape that does not interfere with the sleeve portion of the container can be accurately molded while improving the design by forming an uneven pattern on the surface. can do.

It is sectional drawing explaining the structure of the stick-shaped cosmetic mold structure which concerns on one preferred embodiment of this invention. The configuration of the columnar portion forming mold will be described, (a) is a cross-sectional view of the mold main body portion, and (b) is a cross-sectional view of the fitting mounting member. It is sectional drawing explaining the structure of the lower mold. A top view is shown in FIG. 6A, and a cross-sectional view taken along the line AA of FIG. 3A is shown in FIG. (A) to (e) are explanatory views of the process of manufacturing a stick-shaped cosmetic product and a lipstick product using a stick-shaped cosmetic mold structure. It is a vertical sectional view of the lipstick product manufactured using the stick-shaped cosmetic mold structure.

The stick-shaped cosmetic mold structure 10 according to a preferred embodiment of the present invention shown in FIG. 1 is adopted as a stick-shaped cosmetic product, for example, as a mold structure for molding lipstick 20 (see FIG. 6). is there. In the present embodiment, the lipstick 20 to be molded is, for example, a slim type lipstick. As shown in FIG. 6, the molded lipstick 20 is housed in the tubular sleeve portion 22 of the lipstick container 21 in a state of being integrally attached to the middle plate 24, so that the inside of the lipstick 20 is formed by a known advancing / retreating mechanism 23. As the plate 24 moves forward and backward, it slides along the sleeve portion 22 so as to be able to move forward and backward so that the dish 24 can be taken in and out of the sleeve portion 22. The cosmetic mold structure 10 of the present embodiment enables the lipstick 20 which is a stick-shaped cosmetic to accurately form a columnar portion 20a having an outer peripheral wall shape particularly along the inner peripheral wall shape of the sleeve portion 22. , When the lipstick 20 is taken in and out of the sleeve portion 22, an appropriate clearance is maintained so that the outer peripheral surface of the lipstick 20 can be prevented from interfering with the sleeve portion 22, and the design of the lipstick 20 can be improved. It has a function to make it.

The stick-shaped cosmetic mold structure 10 of the present embodiment is preferably housed in the tubular sleeve portion 22 of the lipstick container 21 so as to be able to advance and retreat, and is preferably used as a stick-shaped cosmetic that is slid along the sleeve portion 22. Is a cosmetic mold structure for molding the lipstick 20 (see FIG. 6), and as shown in FIGS. 1 to 4, the sleeve portion 22 of the lipstick container 21 in the stick-shaped cosmetic (lipstick) 20. Only the columnar portion molding mold 11 for molding the columnar portion 20a (see FIG. 6) having the outer peripheral wall shape along the inner peripheral wall shape and the end face portion 20b (see FIG. 6) of the stick-shaped cosmetic (lipstick) 20. It is provided with an end face portion molding member 12 to be molded. The columnar portion 20a of the stick-shaped cosmetic (lipstick) 20 is transferred to the columnar portion molding mold 11 along the outer peripheral wall shape of the columnar portion 20a of the stick-shaped cosmetic (lipstick) 20. A molding hole 13 having an inner peripheral wall shape that determines the shape of the outer peripheral wall is provided so as to penetrate in the vertical direction, and the end face molding member 12 is a lower end of the molding hole 13 in the columnar portion molding die 11. It covers the opening 13a and is attached in a state of being fixed to the peripheral edge of the opening of the lower end opening 13a. The end face molding member 12 is made of an elastic material and is a deformable elastic mold.

Further, in the present embodiment, in the columnar portion molding die 11, outside air (air) is provided between the opening peripheral portion of the lower end opening 13a of the molding hole 13 and the end face portion molding member 12 fixed to the opening peripheral edge portion. The gas passage 14 for feeding the gas such as the above is preferably formed parallel to the axial direction (extension direction) of the molding hole 13.

Further, in the present embodiment, the columnar portion forming mold 11 is a fitting mounting member detachably and integrally mounted on the fitting recess 15a and the mold main body portion 15 in which the fitting recess 15a is formed in the upper portion. 16 is included (see FIGS. 2A and 2B), and the molding hole 13 is provided so as to penetrate the lower portion of the fitting mounting member 16 and the mold main body portion 15. The molding hole 13 is provided with a reduced diameter portion 13b in the upper region of the fitting mounting member 16, and the gas passage 14 is provided with an upper end portion opened at the bottom surface portion of the fitting recess 15a.

Furthermore, in the present embodiment, the lower mold 17 having the contact polymerization surface 17a superimposed on the lower end surface 11a of the columnar portion forming mold 11 is integrally attached to the columnar portion forming mold 11. .. Then, the end face portion molding member 12 is sandwiched between the contact polymerization surface 17a of the lower mold 17 and the lower end surface 11a of the columnar portion molding mold 11 to cover the lower end opening 13a of the molding hole 13. It is attached in a state of being fixed to the peripheral edge of these openings. A space portion 18 for deformation is formed inside the contact polymerization surface 17a that sandwiches the end face molding member 12 of the lower mold 17, in other words, the contact polymerization surface 17a that sandwiches the end face molding member 12 is the peripheral edge. ing. The deformation space 18 communicates with the gas suction port 18a, and is depressurized by sucking the gas inside through the gas suction port 18a, so that the end face molding member 12 is pushed from the lower end opening 13a of the molding hole 13. It is a space for elastically deforming to the separated side.

In the present embodiment, the stick-shaped cosmetic 20 formed by the stick-shaped cosmetic mold structure 10 is a lipstick. Here, the stick-shaped cosmetic 20 formed by the stick-shaped cosmetic mold structure 10 has a stick-shaped shape such as a concealer, lip balm, lip gloss, stick eye shadow, eyebrow, eyeliner, and stick foundation, in addition to lipstick. It may be various other cosmetics having. The formulation of the compositions used in these cosmetics can be similar to the formulation of the compositions used in this type of stick cosmetics. That is, the formulations of these compositions generally contain waxes, pastes and oils as main components, and further, colorants such as color pigments and pearl pigments, powders such as extender pigments, polymers and thickeners. , Gelling agent, preservative, moisturizer, ultraviolet absorber, antioxidant, etc. The waxes may be any of natural waxes such as vegetable waxes, animal waxes, petroleum waxes and mineral waxes, or synthetic waxes, such as carnauba wax, candelilla wax, sunflower seed wax, hydrogenated jojoba oil, beeswax, mokuro, and hardened castor oil. Paraffin wax, polyethylene wax, selecin, microcrystallin wax, Fishertropsh wax, ethylene propylene oligomer, silicone wax and the like can be appropriately blended. On the other hand, as oils, ester oils such as triglyceride, diglyceride, monoester and diester, other branched hydrocarbon oils such as polyisobutene and squalane, silicone oil, fluorooil, higher alcohol, polyglycerin ester, cholesterol ester, phytosterol ester and isododecane. Ester volatile hydrocarbon oil, volatile silicone and the like can be used. These waxes and oils can be used alone or in combination of two or more.

In the stick-shaped cosmetic mold structure 10 of the present embodiment, as will be described later, the entire molten cosmetic filled in the molding hole 13 is directly cooled and solidified by the refrigerant in contact with the mold to solidify the stick. Since the cosmetic 20 can be formed, it is possible to cool the cosmetic 20 in a more stable state, and even the stick cosmetic 20 made of a composition having soft physical properties is accurately molded so as to have a predetermined shape. Will be possible. In addition, when molding stick-shaped cosmetics with soft physical characteristics, it is possible to prevent the occurrence of dents in the stick due to pressing when inserting the container and the occurrence of slippage between the mold and the side surface of the stick when removing the container. Become.

In the present embodiment, the columnar portion molding die 11 constituting the stick-shaped cosmetic mold structure 10 is preferably made of a metal material having high thermal conductivity such as aluminum and duralumin. As shown in FIGS. 1 and 2 (a) and 2 (b), the columnar portion forming die 11 includes a die main body portion 15 and a fitting mounting member 16.

As shown in FIG. 2A, the mold main body 15 is formed with a fitting recess 15a having a cylindrical hollow cross-sectional shape in a portion surrounded by an upper standing wall 15b, and a lower end thereof. An oblique notch surface 15c having an L-shaped cross-sectional shape is formed in the portion, which is the lower end surface 11a of the columnar portion forming die 11. In the diagonally cutout surface 15c having an L-shaped cross section, the long side portion 15d of the L-shape extends diagonally at an inclination angle substantially the same as the inclination angle of the end face portion 20b (see FIG. 6) of the stick-shaped cosmetic 20. It is provided from one edge in the width direction of the mold body 15 to a region beyond the central portion in the width direction and close to the other edge in the width direction of the mold body 15. .. The short side portion 15e of the L-shaped diagonal notched surface 15c is provided so as to be bent substantially perpendicularly downward with respect to the long side portion 15d and connected to the other edge portion in the lateral width direction of the mold main body portion 15. ing.

Further, in the mold main body 15, the lower half portion of the molding hole 13 penetrates in the vertical direction in the lower portion, which is a portion below the fitting recess 15a, and the upper end is opened in the bottom surface portion of the fitting recess 15a. At the same time, the lower end is provided as a lower end opening 13a in a state of being obliquely opened to the long side portion 15d of the notch surface 15c. Further, adjacent to the molding hole 13, a gas passage 14 is provided in a state where the upper end is opened to the bottom surface of the fitting recess 15a and the lower end is obliquely opened to the peripheral edge of the lower end opening 13a of the molding hole 13. ing.

As shown in FIG. 2B, the fitting mounting member 16 mounted in the fitting recess 15a of the mold main body 15 has the same shape as the hollow shape of the fitting recess 15a of the mold main body 15. ing. As a result, the fitting mounting member 16 is mounted so as to be detachably and snugly fitted into the portion surrounded by the upright wall 15b above the mold main body portion 15 forming the fitting recess 15a. A concave groove portion 16c having a rectangular cross-sectional shape in the vertical direction is formed at the upper end portion of the fitting mounting member 16. The upper half portion of the molding hole 13 is made continuous with the lower half portion provided in the mold main body portion 15 by penetrating vertically between the bottom surface of the concave groove portion 16c and the lower surface of the fitting mounting member 16. Is formed in a possible state. The upper half portion of the molding hole 13 penetrating the fitting mounting member 16 is a reduced diameter portion 13b in which the upper region of approximately two-thirds of the molding hole 13 is reduced in diameter via the step portion 13d.

In the present embodiment, the lower mold 17 is attached to the mold main body 15. The lower mold 17 includes an abutting polymerization surface 17a that is overlapped with an oblique notched surface 15c of the mold main body portion 15 that is a lower end surface 11a of the columnar portion forming mold 11. Like the columnar portion forming die 11, the lower die 17 is preferably made of a metal material having high thermal conductivity such as aluminum and duralumin, and as shown in FIGS. 1 and 3, the lower die 17 has an upper end portion. It is provided with a contact polymerization surface 17a whose contour is an L-shaped cross section that matches the diagonal notched surface 15c of the mold main body portion 15. The contact polymerization surface 17a is formed by superimposing the surface corresponding to the long side portion 17d of the L shape on the surface corresponding to the long side portion 15d of the diagonal notched surface 15c of the mold main body portion 15 and on the short side portion 17e thereof. The corresponding surface is arranged in a state of being overlapped with the surface corresponding to the short side portion 15e of the diagonally cutout surface 15c of the mold main body portion 15. A space portion 18 for deformation is formed on the long side portion 17d of the abutting polymerization surface 17a in a region facing the lower end opening 13a of the molding hole 13 that opens in the lower end surface 11a of the columnar portion molding die 11. A circular recess 17f is provided.

The circular recess 17f is a circular hollow having a diameter slightly larger than the major axis of the lower end opening 13a of the circular forming hole 13 that opens in an elliptical shape at the long side portion 15d of the diagonal notched surface 15c of the mold main body portion 15. It has a cross-sectional shape and is formed at a depth of, for example, about 10 mm. Further, in the opening peripheral edge portion along the contact polymerization surface 17a of the circular recess 17f, the peripheral edge portion of the end face portion molding member 12 is formed between the contact polymerization surface 17a and the lower end surface 11a of the columnar portion molding die 11. 17 g of sandwiching locking recesses for fixing in a sandwiched state are continuously provided in an annular shape. The gas passage 14 provided in the mold main body 15 adjacent to the molding hole 13 sandwiches and locks the opening peripheral edge of the circular recess 17f of the lower mold 17 in the long side 15d of the diagonal notched surface 15c. It is provided in a region facing the recess 17g with the lower end open.

Further, in the central portion of the lower mold 17 in the lateral width direction, the lower gas flow path 17h penetrates vertically between the diagonally arranged bottom portion of the circular recess 17f and the bottom surface of the lower mold 17. It is formed. The lower end of the lower gas flow path 17h is opened to the bottom surface of the lower mold 17 as a gas suction port 18a communicating with the deformation space 18 by the circular recess 17f.

In the present embodiment, the end face molding member 12 constituting the stick-shaped cosmetic mold structure 10 together with the columnar portion molding mold 11 is an elastic mold that can be elastically deformed, for example, a rubber mold made of silicon rubber or the like. Rubber mold) is preferable. By using an elastic mold such as a rubber mold as the end face molding member 12, the end face portion 20b of the stick-shaped cosmetic (lipstick) 20 to be molded has an appearance shape excellent in design due to an uneven pattern or the like. It becomes possible to grant.

In the present embodiment, the end face forming member 12 is formed in an annular shape at the opening peripheral edge of the circular recess 17f of the lower mold 17, as shown in FIGS. 1 and 4 (a) and 4 (b). It has a disk shape having an outer diameter similar to that of the sandwiched locking recess 17g. Further, the end face forming member 12 is formed between the contact polymerization surface 17a of the lower mold 17 and the lower end surface 11a of the columnar portion forming mold 11 in the annular sandwiching locking recess 17g of the lower mold 17. It includes an annular peripheral edge sandwiching locking portion 12b which is a sandwiched portion, and an elastic deformation portion 12a which is arranged so as to cover the opening surface of the circular recess 17f which is a circular region inside the peripheral edge sandwiching locking portion 12b. Is formed of. On the upper surface side of the elliptical region arranged so as to cover the lower end opening 13a of the molding hole 13 in the elastically deformed portion 12a of the end face forming member 12 arranged so as to cover the opening surface of the circular recess 17f of the lower mold 17. , It can be decorated with various uneven patterns.

In the end face forming member 12, the lower die 17 is joined to the lower die 17 by, for example, a fixing screw (not shown) in a state where the contact overlapping surface 17a is overlapped with the lower end surface 11a of the columnar forming die 11. ), When the columnar portion forming mold 11 is integrally fixed to the mold main body portion 15, the peripheral edge sandwiching locking portion 12b is formed in the annular locking recess 17g of the lower mold 17 to form the lower mold. It is firmly sandwiched between the abutting overlapping surface 17a of 17 and the lower end surface 11a of the columnar portion forming die 11. As a result, the end face forming member 12 can cover the lower end opening 13a of the forming hole 13 and be fixed to the peripheral edge of the opening. Further, as a result, the portion of the contact polymerization surface 17a of the lower mold 17 surrounded by the sandwiching locking recess 17g, which is the portion sandwiching the end face portion molding member 12, that is, inside the sandwiching locking recess 17g. A deformation space 18 is formed so that the end face molding member 12 can be elastically deformed on the side of the molding hole 13 away from the lower end opening 13a (see FIG. 1).

In order to manufacture the lipstick 20 and the lipstick product 30 which are stick-shaped cosmetics by using the stick-shaped cosmetic mold structure 10 of the present embodiment having the above-described configuration, it is shown in FIGS. 5 (a) to 5 (e). As described above, a filling step of filling the molded hole 13 with the molten cosmetic (see FIG. 5A) and a cooling step of cooling and solidifying the filled molten cosmetic to form the lipstick 20 (FIG. 5). (B)), the lipstick step (see FIG. 5C) in which the molded lipstick 20 is inserted into the lipstick container 21 (see FIG. 6), and the end face molding from the end face portion 20b of the lipstick 20. An end face peeling step of peeling the member 12 (see FIG. 5 (d)) and a pulling step of pulling the lipstick 20 from the columnar portion molding mold 11 together with the lipstick container 21 to make a lipstick product 30 (see FIG. 5 (e)). A manufacturing method including and can be adopted. Further, instead of the red insertion step (see FIG. 5C), the lipstick container 21 is set in advance in the cosmetic mold structure 10 including the columnar portion molding mold 11 and the end face portion molding member 12. A cooling step of filling the melted cosmetics from the bottom of the set lipstick container 21 and performing a filling step, and then cooling and solidifying the filled melted cosmetics to form the lipstick 20 and a lipstick. A manufacturing method is adopted in which an end face peeling step of peeling the end face molding member 12 from the end face portion 20b of 20 and a lipstick product 30 by pulling the lipstick 20 from the columnar portion molding mold 11 together with the lipstick container 21 are performed. You can also do it.

In the filling step, for example, an opening is made in the molding hole 13 of the columnar portion molding mold 11 in the stick-shaped cosmetic mold structure 10 assembled as shown in FIG. 1 in the concave groove portion 16c at the upper end portion of the fitting mounting member 16. The melted cosmetic is filled through the opening to reach the bottom surface of the concave groove portion 16c (see FIG. 5A).

In the cooling step, the cosmetic mold structure 10 in which the molding hole 13 of the columnar portion molding mold 11 was filled with the molten cosmetic was cooled from the outside by the refrigerant 31 to fill the molding hole 13. The molten cosmetic is cooled and solidified (see FIG. 5 (b)). In the present embodiment, the columnar portion forming mold 11 and the lower mold 17 constituting the stick-shaped cosmetic mold structure 10 are preferably made of a metal material having high thermal conductivity such as aluminum and duralmin. Since it can be directly contact-cooled with a solid or liquid refrigerant, it can be cooled and solidified in a stable state compared to the case of using a general rubber mold. Even if it is 20, it can be molded so as to have a predetermined shape.

In the red insertion step, as shown in FIG. 5C, the fitting mounting member 16 is extracted from the mold main body portion 15 of the columnar portion molding mold 11, and is placed on the molding hole 13 penetrating the mounting member 16. The lipstick 20 (see FIG. 5B) in the upper half portion, which is formed by the half portion and has a reduced diameter portion 20c in the upper region of about 2/3, is fitted with the fitting mounting member 16 extracted. It is exposed inside the recess 15a. After that, in the red insertion step, the reduced diameter portion 20c of the lipstick 20 is outside the reduced diameter portion 20c arranged inside the sleeve portion 22 with the opening of the sleeve portion 22 of the lipstick container 21 facing downward. The lipstick container 21 is fitted and lowered inside the recess 15a until it is pushed into the inner plate 24 (see FIG. 6) having an inner diameter similar to the diameter, and the lipstick 20 is integrally attached to the inner plate 24. Here, since the base end portion of the reduced diameter portion 20c of the lipstick 20 which is the stepped portion 20d is arranged above the bottom surface of the fitting recess 15a in a state of being separated from the bottom surface (FIG. 5B). (See), the reduced diameter portion 20c of the lipstick 20 can be mounted deep into the middle plate 24 without causing the tip of the sleeve portion 22 to interfere with the bottom surface of the fitting recess 15a.

In the end face peeling step, as shown in FIG. 5D, the suction device 32 is connected to the gas suction port 18a that communicates with the deformation space 18 formed on the back surface side of the end face molding member 12, and the lower gas flow. The deforming space 18 is depressurized by sucking gas through the path 17h, and the elastically deformed portion 12a of the end face forming member 12 and the end face portion 20b of the solidified lipstick 20 pass through the gas passage 14. By sending a gas such as air between them, the end face portion molding member 12 is peeled off from the end face portion 20b of the lipstick 20.

In the extraction step, as shown in FIG. 5 (e), the lipstick 20 integrally attached to the inner plate 24 of the lipstick container 21 can be extracted from the molding hole 13 by pulling up the lipstick container 21 from the fitting recess 15a. it can. At this time, by sending a gas such as air between the end face portion molding member 12 and the end face portion 20b of the solidified lipstick 20 through the gas passage 14, the space portion between them becomes a negative pressure. It becomes possible to smoothly pull out the lipstick 20 by avoiding the above. The extracted stick-shaped lipstick 20 forms the lipstick product 30 together with the lipstick container 21.

Further, as shown in FIG. 6, the formed lipstick product 30 is formed, for example, by rotating the gripping sleeve 25 of the lipstick container 21 with respect to the sleeve portion 22, so that the middle plate 24 can be moved through the known advancing / retreating mechanism 23. It can be moved up and down. As a result, the stick-shaped lipstick 20 housed in the tubular sleeve portion 22 while being attached to the inner plate 24 is moved along the sleeve portion 22 as the inner plate 24 advances and retreats by the advancing / retreating mechanism 23. By sliding it forward and backward, it can be taken in and out of the sleeve portion 22 and used.

Then, according to the stick-shaped cosmetic mold structure 10 of the present embodiment having the above-described configuration, a clearance that does not interfere with the sleeve portion 22 of the lipstick container 21 while improving the design by making it possible to form an uneven pattern on the surface. It becomes possible to accurately mold the lipstick 20 which is a stick-shaped cosmetic having a predetermined shape holding the above.

That is, according to the present embodiment, the cosmetic mold structure 10 is for forming a columnar portion 20a of the lipstick 20 having an outer peripheral wall shape along the inner peripheral wall shape of the sleeve portion 22 of the lipstick container 21. A mold 11 and an end face molding member 12 made of an elastic mold for molding only the end face portion 20b of the lipstick 20 are provided, and the entire columnar portion 20a of the lipstick 20 is formed as an inner peripheral wall along the outer peripheral wall shape thereof. It is possible to mold using a columnar portion molding die 11 having a molding hole 13 having a shape. As a result, as compared with the case where the columnar portion is formed by a molding method using a general rubber mold, the entire columnar portion 20a of the lipstick 20 has a predetermined shape that maintains a clearance that does not interfere with the sleeve portion 22 of the lipstick container 21. It becomes possible to mold with high accuracy so as to be.

Further, by elastically deforming the end face portion molding member 12 made of an elastic mold that molds only the end face portion 20b of the lipstick 20, for example, a highly decorative uneven pattern can be easily formed on the end face portion 20b. , The uneven pattern formed on the end face portion 20b makes it possible to easily obtain a lipstick with improved design.

The present invention is not limited to the above embodiment, and various modifications can be made. For example, it is not always necessary that the lower mold having the space for deformation formed integrally attached to the lower end surface of the columnar portion forming mold, and the end face forming member is the contact polymerization surface of the lower mold. It is not always necessary that the columnar portion is sandwiched between the lower end surface and the lower end surface of the columnar portion molding die and fixed to the opening peripheral edge of the lower end opening of the molding hole. The end face molding member may be fixed to the peripheral edge of the lower end opening of the molding hole via an adhesive or the like.

10 Stick-shaped cosmetic mold structure 11 Columnar part molding mold 11a Lower end surface 12 End face molding member 12a Elastic deformation part 12b Peripheral sandwich locking part 13 Molding hole 13a Lower end opening 13b Reduced diameter part 14 Gas passage 15 Mold Main body 15a Fitting recess 15b Standing wall 15c Diagonal notch surface 16 Fitting mounting member 17 Lower mold 17a Abutment overlapping surface 18 Deformation space 18a Gas suction port 20 Stick-shaped cosmetic (lipstick)
20a Columnar part 20b End face part 20c Reduced diameter part 20d Step part 21 Lipstick container 21
22 Sleeve part 23 Advance / retreat mechanism 24 Middle plate 30 Lipstick product 31 Cooling water 32 Suction device

Claims (6)

It is a cosmetic mold structure for forming a stick-shaped cosmetic that is housed in a tubular sleeve portion so as to be able to advance and retreat and slides along the sleeve portion.
A columnar portion molding mold for molding a columnar portion having an outer peripheral wall shape along the inner peripheral wall shape of the sleeve portion in the stick-shaped cosmetic, and an end face molding for molding only the end face portion of the stick-shaped cosmetic. Equipped with parts,
The columnar portion molding die is provided with a molding hole having an inner peripheral wall shape along the outer peripheral wall shape of the columnar portion of the stick-shaped cosmetic, penetrating in the vertical direction.
The end face molding member is an elastic mold that can be elastically deformed, and is attached in a state of covering the lower end opening of the molding hole in the columnar portion molding mold and being fixed to the opening peripheral edge of the lower end opening. Yes,
Stick-shaped cosmetic mold structure. The columnar portion molding die is formed with a gas passage for feeding gas between the opening peripheral edge of the lower end opening of the molding hole and the end face molding member fixed to the opening peripheral edge. Item 1. The stick-shaped cosmetic mold structure according to item 1. The columnar portion molding mold includes a mold main body portion having a fitting recess formed in the upper portion and a fitting mounting member detachably and integrally mounted in the fitting recess, and the molding hole. Is provided so as to penetrate the lower part of the fitting mounting member and the mold main body portion, and the molding hole of the portion penetrating the fitting mounting member has a reduced diameter portion in the upper region. The stick-shaped cosmetic mold structure according to claim 2, wherein the gas passage is provided with an upper end portion opened at the bottom surface portion of the fitting recess. A lower mold having an abutting polymerization surface that is overlapped with the lower end surface of the columnar portion molding die is integrally attached to the columnar portion molding die, and the abutment polymerization surface of the lower die. And the lower end surface of the columnar portion molding die, and the end face portion molding member is attached in a state of covering the lower end opening of the molding hole and being fixed to the opening peripheral portion of the opening. A space for deformation that allows the end face molding member to be elastically deformed to the side away from the lower end opening of the molding hole inside the portion of the lower mold that sandwiches the end face molding member. The stick-shaped cosmetic mold structure according to any one of claims 1 to 3 in which a portion is formed. The deformation space portion communicates with the gas suction port, and is depressurized by sucking gas through the gas suction port so that the end face molding member is separated from the lower end opening of the molding hole. The stick-shaped cosmetic mold structure according to claim 4, which is elastically deformed. A method for producing a stick-shaped cosmetic product using the stick-shaped cosmetic mold structure according to any one of claims 3 to 6.
A filling step of filling the molded hole with the molten cosmetic, a cooling step of cooling and solidifying the filled molten cosmetic to form a stick-shaped cosmetic, and an end face portion of the stick-shaped cosmetic to the end face. It is composed of an end face peeling step of peeling a part molding member and a extraction step of extracting a stick-shaped cosmetic from the columnar part molding mold together with a stick-shaped cosmetic container to obtain a stick-shaped cosmetic product.
In the end face peeling step and the extraction step, the end face molding member fixed to the opening peripheral edge of the lower end opening of the molding hole and the opening peripheral edge from the gas passage whose upper end opens to the bottom surface of the fitting recess. A method of manufacturing a stick-shaped cosmetic product that sends gas between and.

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