Lipstick container for hot filling with replaceable lipstick assembly

A lipstick container for hot filling with replaceable lipstick assembly includes a base, a fixed tube, a lipstick assembly and a cap. The lipstick assembly includes a support tube, a sleeving tube, and an ascending and descending tube; the fixed tube includes a first axial channel; the support tube includes a second axial channel; the sleeving tube includes a third axial channel; the ascending and descending tube includes a forth axial channel and a spiral groove portion screwed with internal threads of the support tube. The fixed tube is put on the sleeving tube and the ascending and descending tube is disposed through the sleeving tube and the support tube; an end of the sleeving tube urging against the support tube.

FIELD OF THE INVENTION

The invention relates to cosmetic containers and more particularly to a lipstick container for hot filling with replaceable lipstick assembly.

BACKGROUND OF THE INVENTION

Lipsticks are usually made by the following steps. First, hot filling for the lipsticks is poured in molds. Next, when the filling is cooled down forming the lipsticks, the lipsticks are taken out from the molds and placed in lipstick containers. However, if the desired lipsticks are softer or thinner, the lipsticks are tended to break apart easily when filling. Moreover, when the lipsticks are not taken out from the molds or placed in the lipstick containers in a perfect vertical direction, scratches are easily formed on the lipsticks. As a result, taking the lipsticks out of the molds and placing the lipsticks in the lipstick containers are difficult. Besides, the whole lipstick container including the lipstick is disposed after the contained lipstick is consumed. This not only pollutes the environment but also is not eco-friendly.

Thus, the need for improvement still exists.

SUMMARY OF THE INVENTION

It is therefore one object of the invention to provide a lipstick container for hot filling with replaceable lipstick assembly comprising a base including a close end and an annular trough disposed on an inner surface of an open end distal the close end; a fixed tube including a first axial channel disposed through a center of the fixed tube, an annular groove formed at an inner surface of a first end, an annular flange disposed at an outer surface of the first end, and the annular flange of the fixed tube is secured with the annular trough of the base; a lipstick assembly including a support tube, a sleeving tube and an ascending and descending tube; wherein the support tube includes a second axial channel disposed through a center of the support tube, an annular protrusion formed at an outer surface of a first end of the support tube, internal threads formed at an inner surface of the first end, a plurality of ridges formed on the outer surface and at a middle portion of the support tube, and an annular shoulder disposed between the ridges and the annular protrusion, the fixed tube is put on the support tube, the ridges are mounted on the annular groove; wherein the sleeving tube includes a third axial channel disposed through a center of the sleeving tube, a top of the sleeving tube being flat or inclined, a bottom of the sleeving tube being flat, and at least one locking hole formed through the sleeving tube, the fixed tube is put on the sleeving tube, the flat bottom of the sleeving tube urges against the annular shoulder of the support tube, the locking hole receives the annular protrusion of the support tube; wherein the ascending and descending tube includes a fourth axial channel disposed through a center of the ascending and descending tube, a recess formed at a first end, a spiral groove portion communicates with the recess and extends from the recess towards a second end distal the recess, and a plurality of longitudinal ribs are formed on an inner surface of the recess, the ascending and descending tube is disposed through the third axial channel of the sleeving tube and through the second axial channel of the support tube, the spiral groove portion is correspondently screwed with the internal threads of the support tube; and a cap including a close end and an open end, wherein the open end of the cap receives the sleeving tube and is secured to the fixed tube.

A lipstick can be received in the recess and secured by the longitudinal ribs.

The invention has the following advantages and benefits in comparison with the conventional art:

The lipstick assembly is replaceable. When the lipstick is consumed, a user can hold the fixed tube and unscrew the support tube to remove the support tube, the sleeving tube and the ascending and descending tube together, and replace a new one. As a result, the base, the fixed tube, and the cover can be reused. This not only protects the environment but also is eco-friendly with reduced waste.

Suitable for softer and thinner lipstick. The invention is applicable for hot filling the lipstick by placing the lipstick container upwards and downwards. As a result, it is suitable for softer and thinner lipsticks as well. There's no need to fill a lipstick mold first and take the lipstick out later. Thus, there's no need to worry that scratches may be formed easily if the lipstick is not taken out in a perfect vertical direction or the lipstick may easily break apart when filling.

DETAILED DESCRIPTION OF THE INVENTION

Referring toFIG.1, a lipstick container in accordance with the invention comprises a base10, a fixed tube20, a lipstick assembly60and a cap70as discussed in detail below. The lipstick assembly60includes a support tube30, a sleeving tube40and an ascending and descending tube50. The fixed tube20is mounted on the base10. Next, the support tube30is put in the fixed tube20, so a second end of the support tube30urges against the base10. The sleeving tube40is then disposed on a first end of the support tube30distal the base10. Next, the ascending and descending tube50is put in the sleeving tube40and the support tube30. Lastly, the cap70is put on the sleeving tube40and secured to the fixed tube20.

Referring toFIG.2, the base10includes a close end. The fixed tube20includes a first axial channel21disposed through a center of the fixed tube20and an annular groove22is provided at an inner surface of a first end. An annular flange23is disposed on an outer surface of the first end. The support tube30includes a second axial channel31disposed through a center of the support tube30. External threads32disposed on the support tube30adjacent the base10are screwed with the base10. The sleeving tube40includes a third axial channel41disposed through a center of the sleeving tube40. A top of the sleeving tube40being flat or inclined and a bottom of the sleeving tube40being flat. The ascending and descending tube50includes a fourth axial channel51disposed through a center of the ascending and descending tube50. A recess52forms at a first end of the ascending and descending tube50and a spiral groove portion53extends from the recess52towards a second end distal the recess52. The spiral groove portion53communicates with the recess52. The cap70includes an open end. The open end of the cap70further includes an annular slot71on an inner surface.

Referring toFIG.3, the base10includes an open end and an annular trough11disposed on an inner surface of the open end distal the close end. The base10further comprises a projecting member12and a slip resistant member13. The fixed tube20further comprises a plurality of stubs24on the outer surface distal the annular flange23. An annular protrusion33formed on an outer surface of the support tube30distal the external threads32. Internal threads34are formed on an inner surface of the first end of the support tube30. A plurality of ridges35are formed on the outer surface and at a middle portion of the support tube30. An annular shoulder36is disposed between the ridges35and the annular protrusion33. At least one locking hole42is formed through the sleeving tube40. The sleeving tube40further comprises an annular protuberance43circulated along an inner surface of the sleeving tube40. A plurality of longitudinal ribs54are formed on an inner surface of the recess52. The cap70includes a close end at another end.

Referring toFIGS.1to3again, the projecting member12is disposed between an outer surface of the slip resistant member13and the inner surface of the base10. The external threads32disposed on the support tube30adjacent the base10are screwed with the projecting member12of the base10. The annular flange23of the fixed tube20is secured with the annular trough11of the base10. The fixed tube20is put on the support tube30. The ridges35are correspondently mounted on annular grooves22of the fixed tube20. The sleeving tube35is put in the fixed tube20. The flat bottom of the sleeving tube40urges against the annular shoulder36of the support tube30. The locking hole42receives the annular protrusion33of the support tube30. The ascending and descending tube50is disposed through the third axial channel41of the sleeving tube40and then through the second axial channel31of the support tube30. The annular protuberance43urges against an end of the recess52which is connected to the spiral groove portion53. The spiral groove portion53is correspondently screwed with the internal threads34of the support tube30. The cap70is put on the sleeving tube40and secured to the fixed tube20by the annular slot71snapping the stubs24.

Referring toFIGS.4to5, the support tube30includes three ridges35on each side symmetrically disposed on two sides. The annular grooves22are disposed on the inner surface of the fixed tube20and correspondent to the ridges35. The ridges35are mounted on and secured with the annular groves22, so the support tube30and the fixed tube20are secured.

Referring toFIGS.6to7and in conjugation withFIGS.1to3, a premade lipstick81is mounted on the lipstick assembly60. The premade lipstick81is premade by hot filling a mold and then taken out after cooling down. Next, hold and rotate the fixed tube20. The spiral groove portion53of the ascending and descending tube50rotates along the internal threads34of the support tube30towards the top of the sleeving tube40, such that the ascending and descending tube50rotates towards the top of the sleeving tube40. The recess52of the ascending and descending tube50receives the premade lipstick81by mounting the premade lipstick81onto the longitudinal ribs54. The hot filling is not limited to only making the premade lipstick81, and can be applied to other paste.

Referring toFIGS.8to9and in conjugation withFIGS.1to3, hot filling the lipstick container when placed upwards is shown. The spiral groove portion53of the ascending and descending tube50rotates along the internal threads34towards a bottom of the support tube30, such that the ascending and descending tube50rotates towards the bottom. Next, a leakage proof member90is placed under the support tube30. Then hot filling is poured into the fourth axial channel51of the ascending and descending tube50until the hot filling is filled to the top of the sleeving tube40. When the hot filling is cooled down, the lipstick80is made.

Referring toFIGS.10to11and in conjugation withFIGS.1to3, hot filling the lipstick container when placed downwards is shown. The spiral groove portion53of the ascending and descending tube50rotates along the internal threads34and towards an opposite direction of the top of the sleeving tube40, such that the ascending and descending tube50rotates towards the bottom. Next, another leakage proof member90is placed under the sleeving tube40. Then hot filling is poured into the fourth axial channel51of the ascending and descending tube50until the hot filling is filled to the top of the sleeving tube40. When the hot filling is cooled down, the lipstick80is made.

Referring toFIGS.12to16and in accordance toFIG.1, steps of replacing the lipstick assembly60is shown. When the lipstick80is consumed, remove the cap70and the base10. Next, hold the fixed tube20to unscrew the support tube30, and then the support tube30, the sleeving tube40and the ascending and descending tube50can be removed to replace the new lipstick assembly60. The base10, the fixed tube20and the cap70can be reused. This not only protects the environment but also is eco-friendly with reduced waste.