Patent Description:
In general, plastic containers, including cosmetic containers, have been widely known as being manufactured mainly by a hollow molding scheme (blow molding scheme).

The containers molded by the hollow molding scheme have very monotonous forms and shapes, which lack a visual effect. In particular, according to blow molding, due to a limitation on a thickness, it is difficult to change an outer shape, and a visual appearance is inferior.

In addition, while cosmetic containers (eyeliners, mascaras, lipsticks, eyeshadows, etc.) that are mainly and frequently used by women strongly require decorative aspects in addition to functionality, the blow molding is restricted to a simple cylindrical shape, so that merchantability may not be increased.

Further, since a conventional cosmetic container is manufactured by the hollow molding scheme, a bottom surface and a side surface of the cosmetic container are generally formed integrally with each other. Accordingly, it is impossible to provide a separate device for reinforcing the bottom surface in a process of manufacturing the cosmetic container, so that the bottom surface may be easily damaged to allow contents to leak to an outside when a cosmetic product is dropped.

<CIT> discloses a cosmetic container according to the preamble of claim <NUM>. <CIT>, <CIT> and <CIT> disclose further cosmetic containers.

To solve the problems described above, an object of the present invention is to provide a cosmetic container and a manufacturing method thereof, in which a bottom surface of the cosmetic container for storing a cosmetic product is formed firmly and integrally with a side surface of the cosmetic container, and rigidity of the bottom surface is improved so that the bottom surface is prevented from being damaged even when the cosmetic container is accidentally dropped, and thus the cosmetic product may be permanently received in the cosmetic container, which improves user satisfaction.

To achieve the objects of the present invention described above, there is provided a cosmetic container according to claim <NUM> including: a side surface member that forms a closed curved surface shielded from an outside so as to form a predetermined reception space for receiving a cosmetic product; a top surface member formed integrally with the side surface member on an upper portion of the side surface member, and including a cap coupling part protruding from a center region of the top surface member so as to be coupled with a cap; and a bottom member disposed on a lower portion of the side surface member so as to be fixed to the side surface member so that the reception space is shielded from the outside, wherein the bottom member is drawn inward of the side surface member by a predetermined interval, and an overlapping member that overlaps the bottom member is formed by a double injection scheme to allow the side surface member to surround a bottom surface of the bottom member, so that the bottom member and the side surface member are integrally bonded, wherein the overlapping member is provided on a side surface thereof with a tapered surface, which has a width that is gradually narrowed toward a lower side of the overlapping member and wherein the overlapping member has an outer surface that is curved, and wherein a lower inner surface of the side surface member and the tapered surface are bonded to each other, wherein a fixing sill into which a fixing bar for fixing the bottom member when the bottom member and the side surface member are bonded to each other is insertable protrudes from a center region of the bottom member, wherein a reinforcing rib having a grid shape protruding by a predetermined height from a top surface of the bottom member except for an inside of the fixing sill.

Furthermore, an extension part extending by a predetermined height in a height direction of the bottom member may be provided on a periphery of a top surface of the bottom member.

In addition, a separate reinforcing part having one side surface making contact with an inner surface of the extension part and an opposite side surface making contact with the top surface of the bottom member may be formed on the inner surface of the extension part.

Further, a fastening groove may be recessed on a periphery of the bottom surface of the bottom member, and a fastening protrusion inserted into the fastening groove may protrude from a periphery of a top surface of the overlapping member.

According to the invention, a separate filling resin material is applied to a top surface of the bottom member so that the top surface of the bottom member is smooth.

In addition, the top surface of the bottom member to which the filling resin material is applied may be inclined downward toward a center region of the bottom member.

To achieve the objects of the present invention described above, there is provided a method of manufacturing a cosmetic container according to claim <NUM>, the method including: a first step of molding a side surface member and a top surface member such that a reception space is formed by using a hollow molding scheme; a second step of allowing a fixing bar provided in a molding device to pass through a cap coupling part so as to be inserted into a fixing sill of a bottom member to fix the bottom member; a third step of arranging the side surface member such that a tapered surface of the bottom member makes contact with a lower inner surface of the side surface member while the bottom member is fixed; and a fourth step of forming an overlapping member by a double injection scheme so that the bottom member and the side surface member are bonded to each other.

In this case, a step of separating the fixing bar from the fixing sill and allowing the cosmetic container, which has been molded, to be removed from the molding device may be performed after the fourth step.

As described above, according to the cosmetic container and the manufacturing method thereof of the present invention, the bottom surface of the cosmetic container for storing the cosmetic product may be formed firmly and integrally with the side surface of the cosmetic container, so that the bottom surface can be prevented from being separated from the side surface of the cosmetic container.

In addition, the rigidity of the bottom surface of the cosmetic container may be improved so that the bottom surface can be prevented from being damaged even when the cosmetic container is accidentally dropped, and thus the cosmetic product can be permanently received in the cosmetic container, which improves user satisfaction.

Further, unlike a conventional hollow molding scheme, various printing schemes can be implemented on a surface of the cosmetic container.

Furthermore, since an entire cosmetic container is molded by using the same material, inconvenience of separating a body and a cap to separately collect the body and the cap after the cosmetic container is used up can be omitted.

In addition, since contents received inside the cosmetic container are designed to collect in a center region of the bottom surface, the contents can be drawn out with a pump so as to be completely used up without leaving any residue.

Further, while a conventional tubular container has a flat bottom so that the container may not be erected by using the bottom, the cosmetic container according to the present invention can be erected upright by using a cap part and erected by using a flat bottom formed by the double injection scheme, so that convenience of use can be improved.

Hereinafter, a cosmetic container and a manufacturing method thereof according to one embodiment of the present invention will be described in more detail with reference to the accompanying drawings.

<FIG> is a perspective view showing a structure of a cosmetic container according to one embodiment of the present invention, <FIG> is a perspective view showing an inner structure of the cosmetic container according to one embodiment of the present invention, <FIG> is a longitudinal sectional view showing the structure of the cosmetic container according to one embodiment of the present invention, <FIG> is a cutaway perspective view showing the structure of the cosmetic container according to one embodiment of the present invention, <FIG> is a cutaway perspective view showing a structure of a cosmetic container according to another embodiment of the present invention, and <FIG> is a flowchart for sequentially describing a method of manufacturing a cosmetic container according to one embodiment of the present invention.

As shown in <FIG>, according to one embodiment of the present invention, a cosmetic container may include: a side surface member <NUM> that forms a closed curved surface shielded from an outside so as to form a predetermined reception space <NUM> for receiving a cosmetic product; a top surface member <NUM> formed integrally with the side surface member <NUM> on an upper portion of the side surface member <NUM>, and including a cap coupling part <NUM> protruding from a center region of the top surface member <NUM> so as to be coupled with a cap; and a bottom member <NUM> disposed on a lower portion of the side surface member <NUM> so as to be fixed to the side surface member <NUM> so that the reception space <NUM> is shielded from the outside, wherein the bottom member <NUM> is drawn inward of the side surface member <NUM> by a predetermined interval, and an overlapping member <NUM> that overlaps the bottom member <NUM> is formed by a double injection scheme to allow the side surface member <NUM> to surround a bottom surface of the bottom member <NUM>, so that the bottom member <NUM> and the side surface member <NUM> are integrally bonded.

The side surface member <NUM> refers to a member that forms a side surface of the cosmetic container, in which a plate surface of the side surface member <NUM> may be curved to form the closed curved surface, and the reception space <NUM> may be provided inside the side surface member <NUM> to receive the cosmetic product.

The top surface member <NUM> may be formed integrally with the side surface member <NUM> on the upper portion of the side surface member <NUM> so that the reception space <NUM> may be shielded from the outside, and the cap coupling part <NUM> having a hollow to allow the cosmetic product received in the cosmetic container to be selectively discharged to the outside for use may protrude from the center region of the top surface member <NUM>.

A screw thread may protrude from an outer surface of the cap coupling part <NUM> so as to engage with a screw thread formed on an inner surface of a cap (not shown) so that the cap (not shown) may be screw-coupled to the cap coupling part <NUM>.

The bottom member <NUM> refers to a member that is disposed on the lower portion of the side surface member <NUM> so as to be fixed to the side surface member <NUM> so that the reception space <NUM> may be shielded from the outside, in which the bottom member <NUM> may have a peripheral shape corresponding to a shape of a longitudinal section of the side surface member <NUM>.

Since the peripheral shape of the bottom member <NUM> corresponds to the shape the longitudinal section of the side surface member <NUM>, a side surface of the bottom member <NUM> may make close contact with a lower inner surface of the side surface member <NUM> so that the lower inner surface of the side surface member <NUM> and the side surface of the bottom member <NUM> may be easily bonded to each other by the double injection scheme.

In addition, a fixing sill <NUM> into which a fixing bar for fixing the bottom member <NUM> when the bottom member <NUM> and the side surface member <NUM> are bonded to each other is inserted may protrude from a center region of the bottom member <NUM>.

The fixing sill <NUM> may serve to allow the fixing bar to be inserted into the fixing sill <NUM> so as to fix the bottom member <NUM>, so that the bottom member <NUM> may be prevented from fluctuating when the bottom member <NUM> is bonded to a bottom surface of the side surface member <NUM> by the double injection scheme, and thus the lower inner surface of the side surface member <NUM> may accurately make contact with the side surface of the bottom member <NUM>.

A reinforcing rib <NUM> having a grid shape may protrude by a predetermined height from a top surface of the bottom member <NUM> except for an inside of the fixing sill <NUM>, so that rigidity of the bottom member <NUM> may be increased, and thus the bottom member <NUM> may be prevented from being damaged by an external force.

In addition, an extension part <NUM> extending by a predetermined height in a height direction of the bottom member <NUM> may be provided on a periphery of the top surface of the bottom member <NUM> so that a tapered surface <NUM> of an overlapping member <NUM> that will be described below may extend.

The extension part <NUM> may serve to firmly bond the bottom member <NUM> to the side surface member <NUM> by increasing a contact area between the side surface of the bottom member <NUM> and the lower inner surface of the side surface member <NUM>.

In addition, a separate reinforcing part <NUM> having one side surface making contact with an inner surface of the extension part <NUM> and an opposite side surface making contact with the top surface of the bottom member <NUM> may be formed on the inner surface of the extension part <NUM>, so that even when an external force is applied, the extension part <NUM> and the lower inner surface of the side surface member <NUM> may be maintained in a bonded state, and thus the cosmetic container may be prevented from being damaged.

In addition, a fastening groove <NUM> having a ring shape may be recessed on a periphery of the bottom surface of the bottom member <NUM>, and a fastening protrusion <NUM> protruding from a periphery of a top surface of the overlapping member <NUM> may be inserted into the fastening groove <NUM>, so that a bonding area between the bottom member <NUM> and the overlapping member <NUM> may expand, and thus firm coupling may be achieved.

Meanwhile, the overlapping member <NUM> refers to a member that overlaps the bottom member <NUM> to allow the side surface member <NUM> to surround the bottom surface of the bottom member <NUM> when the side surface member <NUM> and the bottom member <NUM> are bonded to each other by the double injection scheme.

Since the overlapping member <NUM> is formed by the double injection scheme, the side surface member <NUM> and the bottom member <NUM> may be formed integrally with each other, so that molding of the cosmetic container may be completed.

The overlapping member <NUM> may be provided on a side surface thereof with a tapered surface <NUM>, which has a width that is gradually narrowed toward a lower side of the overlapping member <NUM> and has an outer surface that is curved, and the lower inner surface of the side surface member <NUM> and the tapered surface <NUM> may be bonded to each other.

Meanwhile, as shown in <FIG>, according to another embodiment of the present invention, a cosmetic container may include: a side surface member <NUM> that forms a closed curved surface shielded from an outside so as to form a predetermined reception space <NUM> for receiving a cosmetic product; a top surface member <NUM> formed integrally with the side surface member <NUM> on an upper portion of the side surface member <NUM>, and including a cap coupling part <NUM> protruding from a center region of the top surface member <NUM> so as to be coupled with a cap; and a bottom member <NUM> disposed on a lower portion of the side surface member <NUM> so as to be fixed to the side surface member <NUM> so that the reception space <NUM> is shielded from the outside, wherein the bottom member <NUM> is drawn inward of the side surface member <NUM> by a predetermined interval, an overlapping member <NUM> that overlaps the bottom member <NUM> is formed by a double injection scheme to allow the side surface member <NUM> to surround a bottom surface of the bottom member <NUM>, so that the bottom member <NUM> and the side surface member <NUM> are integrally formed, and a separate filling resin material <NUM> is applied to a top surface of the bottom member <NUM> so that the top surface of the bottom member <NUM> is smooth.

The filling resin material <NUM> refers to a member that is applied to the top surface of the bottom member <NUM> so as to be formed integrally with the bottom member <NUM>, in which the filling resin material <NUM> may be applied to the top surface of the bottom member <NUM> so that a grid formed by the reinforcing rib <NUM> provided in the bottom member <NUM> may not be exposed to the outside.

Therefore, the grid may not be exposed to the outside due to the filling resin material <NUM> while the rigidity of the bottom member <NUM> is maintained by the reinforcing rib <NUM>, so that when contents are drawn out to the outside of the cosmetic container for use by using a pump, it is possible to prevent a case in which the contents received in the grid may not be drawn out by the pump so as not to be used as the contents received in the cosmetic container are received in the grid.

In addition, the top surface of the bottom member <NUM> to which the filling resin material <NUM> is applied may be inclined downward toward the center region of the bottom member <NUM>, so that the contents may be collected in the center region of the bottom member <NUM>. Accordingly, when the contents are drawn out to the outside by using the pump, a draw-out tube of the pump may be located in the center region of the bottom member <NUM> to facilitate the drawing-out of the contents, and the contents may be completely used up without allowing the contents to remain.

A process of manufacturing a cosmetic container according to one embodiment of the present invention, which has the configuration described above, will be described as follows.

First, a first step S1 of molding a side surface member <NUM> and a top surface member <NUM> such that a reception space <NUM> is formed by using a hollow molding scheme may be performed.

Thereafter, a second step S2 of allowing a fixing bar provided in a molding device to pass through a cap coupling part <NUM> formed on the top surface member <NUM> so as to be inserted into a fixing sill <NUM> of a bottom member <NUM> to fix the bottom member <NUM> may be performed.

When the bottom member <NUM> is fixed by the fixing bar, a third step S2 of arranging the side surface member <NUM> such that the bottom member <NUM> makes contact with a lower inner surface of the side surface member <NUM> while the bottom member <NUM> is fixed may be performed.

A fourth step S4 of forming an overlapping member <NUM> to surround a bottom surface of the bottom member <NUM> to overlap the bottom member <NUM> when double injection is performed while the lower inner surface of the side surface member <NUM> makes contact with a side surface of the bottom member <NUM> so that the side surface of the bottom member <NUM> and the lower inner surface of the side surface member <NUM> are bonded to each other may be performed.

In addition, when the bottom member <NUM> and the lower inner surface of the side surface member <NUM> are bonded to each other, the fixing bar may be separated from the fixing sill <NUM>, and the cosmetic container, which has been molded, may be removed from the molding device, so that the manufacture of the cosmetic container may be completed.

According to the cosmetic container and the manufacturing method thereof having the configurations described above, a bottom surface of the cosmetic container for storing a cosmetic product is formed firmly and integrally with a side surface of the cosmetic container, and rigidity of the bottom surface is improved so that the bottom surface is prevented from being damaged even when the cosmetic container is accidentally dropped, and thus the cosmetic product may be permanently received in the cosmetic container, which improves user satisfaction.

Claim 1:
A cosmetic container comprising:
a side surface member (<NUM>) that forms a closed curved surface shielded from an outside so as to form a predetermined reception space (<NUM>) for receiving a cosmetic product;
a top surface member (<NUM>) formed integrally with the side surface member (<NUM>) on an upper portion of the side surface member (<NUM>), and including a cap coupling part (<NUM>) protruding from a center region of the top surface member (<NUM>) so as to be coupled with a cap; and
a bottom member (<NUM>) disposed on a lower portion of the side surface member (<NUM>) so as to be fixed to the side surface member (<NUM>) so that the reception space (<NUM>) is shielded from the outside,
wherein the bottom member (<NUM>) is drawn inward of the side surface member (<NUM>) by a predetermined interval, and an overlapping member (<NUM>) that overlaps the bottom member (<NUM>) is formed by a double injection scheme to allow the side surface member (<NUM>) to surround a bottom surface of the bottom member (<NUM>), so that the bottom member (<NUM>) and the side surface member (<NUM>) are integrally bonded,
wherein a fixing sill (<NUM>) into which a fixing bar for fixing the bottom member (<NUM>) when the bottom member (<NUM>) and the side surface member (<NUM>) are bonded to each other is insertable protrudes from a center region of the bottom member (<NUM>),
characterized in that a reinforcing rib (<NUM>) having a grid shape protruding by a predetermined height from a top surface of the bottom member (<NUM>) except for an inside of the fixing sill (<NUM>), wherein the cosmetic container is configured so that
a separate filling resin material (<NUM>) is applied to a top surface of the bottom member (<NUM>) so that the top surface of the bottom member (<NUM>) is smooth, wherein
the overlapping member (<NUM>) is provided on a side surface thereof with a tapered surface (<NUM>), which has a width that is gradually narrowed toward a lower side of the overlapping member (<NUM>) and wherein the overlapping member has an outer surface that is curved, and wherein
a lower inner surface of the side surface member (<NUM>) and the tapered surface (<NUM>) are bonded to each other.