WO2025152144A1 - Double-chamber dispensing container - Google Patents

Double-chamber dispensing container

Info

Publication number
WO2025152144A1
WO2025152144A1 PCT/CN2024/073236 CN2024073236W WO2025152144A1 WO 2025152144 A1 WO2025152144 A1 WO 2025152144A1 CN 2024073236 W CN2024073236 W CN 2024073236W WO 2025152144 A1 WO2025152144 A1 WO 2025152144A1
Authority
WO
WIPO (PCT)
Prior art keywords
partition
container body
double
compartment
partition plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2024/073236
Other languages
French (fr)
Inventor
Jinseok Kim
Xuehua MO
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LOreal SA
Original Assignee
LOreal SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LOreal SA filed Critical LOreal SA
Priority to PCT/CN2024/073236 priority Critical patent/WO2025152144A1/en
Priority to FR2402139A priority patent/FR3158505B3/en
Publication of WO2025152144A1 publication Critical patent/WO2025152144A1/en
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D34/00—Containers or accessories specially adapted for handling liquid toiletry or cosmetic substances, e.g. perfumes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
    • B65D25/02—Internal fittings
    • B65D25/04—Partitions
    • B65D25/08—Partitions with provisions for removing or destroying, e.g. to facilitate mixing of contents
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D2200/00—Details not otherwise provided for in A45D
    • A45D2200/05—Details of containers
    • A45D2200/058—Means for mixing different substances prior to application

Definitions

  • the invention relates generally to a double-chamber dispensing container for dispensing two compositions in the mixed state.
  • a hair color product includes two separate tubes-colorant and developer.
  • a user usually squeezes equal parts of colorant and developer from two separate tubes into a mixing bowl. Then the user uses an applicator brush to thoroughly mix the compositions as a smooth, consistent blend. This hair coloring process is very complicated to operate.
  • An object of the present invention is to provide a double-chamber dispensing container for dispensing two compositions in the mixed state and a method for producing the same, less elements are used in comparison to two separate tubes being used for storing two different formulas, easy for using because there needs reduced pressure for separating the partition unit which is rather friendly for the user, especially the elder users, and the hermetical sealing and mixing of the two compositions is guaranteed thanks to the partition unit.
  • the invention relates to a double-chamber dispensing container for dispensing two compositions in the mixed state, said container comprising:
  • a substantially tubular container body made of an elastically deformable material, having a bottom end which is closed, and an end having an opening, wherein the container body defines a chamber;
  • a cap for enclosing the opening of the container body
  • the partition unit includes a partition ring and a partition plate which are formed as one piece, and the partition plate is configured to be separated from the partition ring under the effect of a transverse activating pressure or force onto the container body.
  • the partition ring and the partition plate are formed as one piece by bi-injection or overmolding or are mechanically assembled by force.
  • the partition ring is made of the same material as that of the substantially tubular container body.
  • the substantially tubular container body comprises, on its outer surface, an indicator for assisting a user to apply the transverse activating pressure or force thereon.
  • mono material or two or more different materials are used for the partition ring and the partition plate which are mechanically assembled by force, and preferably the material includes PP.
  • the partition plate is formed with a peripheral groove which has a depth in a direction perpendicular to a main surface of the partition plate, and the partition ring has a ridge protruding along its perimeter, and the ridge is configured to be in snap fit with the peripheral groove, and preferably, one or more ribs are diagonally extending in the partition ring.
  • the first composition includes a colorant
  • the second composition includes a developer
  • the invention relates to a method for producing a double-chamber dispensing container for dispensing two compositions in the mixed state, the method including:
  • partition unit including a partition ring and a partition plate, wherein the partition ring and the partition plate are formed as one piece by bi-injection or overmolding or are mechanically assembled by force;
  • the container body has a bottom end which is open, and an end having an opening for dispensing;
  • the partition unit onto the substantially tubular container body, so that the partition ring is transversely sealed onto the inner periphery of the substantially tubular container body, wherein the partition unit separates the tubular container body into a first compartment far from the bottom end and a second compartment near the bottom end;
  • the partition ring is made of the same material as that of the substantially tubular container body.
  • an indicator is formed on an outer surface of the substantially tubular container body, for assisting a user to apply the transverse activating pressure or force thereon.
  • the partition plate is formed with a peripheral groove which has a depth in a direction perpendicular to a main surface of the partition plate, and the partition ring has a ridge protruding along its perimeter, and the ridge is configured to be in snap fit with the peripheral groove, and preferably, one or more ribs are diagonally extending in the partition ring; and optionally, two slots are arranged on the left and right side of the outer surface of the cap for clamping during filling.
  • the first composition includes a colorant
  • the second composition includes a developer
  • mono material or two or more different materials are used for the partition ring and the partition plate which are mechanically assembled by force, and preferably the material includes PP.
  • the double-chamber dispensing container and the method for producing the same according to the present application less elements are used in comparison to two separate tubes being used for storing two different formulas, easy for using because there needs reduced pressure for separating the partition unit which is rather friendly for the user, especially the elder users, and the hermetical sealing and mixing of the two compositions is guaranteed thanks to the partition unit.
  • FIG. 1 shows a perspective view of a double-chamber dispensing container for dispensing two compositions in the mixed state according to one embodiment of the present invention.
  • FIG. 3 shows a cross-sectional view of the double-chamber dispensing container according to one embodiment of the present invention.
  • FIG. 4 shows an exploded view of a partition unit of the double-chamber dispensing container according to one embodiment of the present invention.
  • FIG. 5 shows a cross-sectional view of the partition unit of the double-chamber dispensing container according to one embodiment of the present invention.
  • FIG. 6 shows a schematic view of the welding of the partition unit to a tubular container body of the double-chamber dispensing container according to one embodiment of the present invention.
  • FIG. 7 shows a schematic view of a process for producing a double-chamber dispensing container for dispensing two compositions in the mixed state according to one embodiment of the present invention.
  • Figures 1 to 3 illustrate a double-chamber dispensing container 1000 according to one embodiment of the present invention in exploded views and a cross-sectional view respectively.
  • the double-chamber dispensing container 1000 comprises a substantially tubular container body 1.
  • the tubular container body 1 is made of an elastically deformable material, for example high-density polyethylene or polypropylene.
  • the tubular container body 1 is transparent or translucent, so that the user can easily view the contents therein.
  • the tubular container body 1 includes a bottom end which is closed, and an end having an opening 13, wherein the container body defines a chamber.
  • the tubular container body 1 includes a finish 11 on one end, and the finish 11 defines an opening 13 for filling.
  • the double-chamber dispensing container 1000 further comprises a partition unit 3.
  • the partition unit 3 is disposed inside the container body 1, so as to hermetically divide the chamber of the tubular container body 1 into two chambers, i.e., a first compartment 14 far from the bottom end and a second compartment 15 near the bottom end.
  • the first compartment 14 and second compartment 15 in fig. 2 are imaginary, just for easy understanding the position relationships for the elements in the container 1000.
  • the first compartment 14 is configured to contain a first composition
  • the second compartment 15 is configured to contain a second composition.
  • the partition unit 3 includes a continuous peripheral edge 311 as shown in fig. 4, disposed inside the tubular container body 1 of the container 1000, between the bottom end and the end having an opening 13, closing the tubular container body 1 hermetically along its peripheral edge 311.
  • the two compositions cannot come into contact with each other, and are effectively stored in hermetic manner.
  • the first composition includes a colorant
  • the second composition includes a developer.
  • the partition unit 3 is substantially in the form of a disc, for example circular or elliptic, but this shape may, of course, vary as a function of the circumferential shape of the container body 1.
  • the partition unit 3 includes a partition ring 31 and a partition plate 32.
  • the partition ring 31 and the partition plate 32 are formed as one piece by bi-injection or overmolding or are mechanically assembled by force, and the partition plate 32 is configured to be separated from the partition ring 31 under the effect of a transverse activating pressure or force onto the container body 1.
  • the partition plate 32 is made of a first material and the partition ring 31 is made of a second material which has a lower melting temperature than that of the first material.
  • the second material includes HDPE, and the first material includes PET.
  • the first material has an injection temperature of about 260°C -300°C, and the second material has an injection temperature of about 180°C-230°C.
  • ribs 314 there is one or more ribs 314 extending in a horizontal plane in the hollow cone 312, and windows 313 are formed between the ribs 314 and the hollow cone 312.
  • the ribs 314 are optional, and in comparison with the area of the windows 313, the areas of the ribs 314 are rather small, so as not influence the flowing through of the mixed compositions when the partition plate 32 is separated from the partition ring 31.
  • the snap fit between the ridge 315 and the peripheral groove 322 forms a labyrinth seal, so as to improve the hermetical sealing between the first compartment 14 and second compartment 15.
  • the hollow cone 312 of the partition ring 31 provides support to the partition plate 32, so that the partition plate 32 can only move away from the partition ring 31 in the downward direction as shown in figs. 4-5. After the partition plate 32 is separated from the partition ring 31, the two compositions can be mixed together by passing through the partition ring 31, in particular passing through the windows 313 thereof.
  • the laser welding is performed by means of a laser 41 which is mounted on a rotation laser arm 42, which rotates around an axis of rotation S1, and the axis of rotation S1 is in coincident with a central axis S2 of the tubular container body 1.
  • the tubular container body 1 After the first compartment 14 is filled with the first composition, the holding jigs 52 keep clamping onto the slots 23, and the cover 22 with be closed onto the main body 21 so as to seal the opening 13 and thus seal the first compartment 14, as schematically shown in fig. 7c. Thereafter, the tubular container body 1 will be put in a reversed position so that the second compartment 15 is on the top and the first compartment 14 which has been filled with the first composition is now at the bottom, as shown in fig. 7c. In a similar way, the second compartment 15 will be filled with the second composition, such as the developer, by means of another filling nozzle 53, as schematically shown in fig. 7d. After the second compartment 15 is filled with the second composition, the second compartment 15 will be closed and sealed by a transverse seal 12, as schematically shown in fig. 7e. In this way, the tubular container body 1 is sealed in both the first compartment 14 and the second compartment 15.
  • the second composition such as the developer
  • an indicator 16 is formed on an outer surface of the substantially tubular container body 1, for assisting a user to apply the transverse activating pressure or force thereon, as schematically shown in fig. 7e.
  • the indicator 16 may be one or more lines on a circumference of the tubular container body 1 in a position near where the partition unit 3 is situated.
  • the indicator 16 may be a relief on a circumference of the tubular container body 1.
  • the indicator 16 may provide the user with a visual or tactile sensation.
  • the user may first press or squeeze the tubular container body 1, preferably with the help of the indicator 16, so as to squeeze the partition unit 3 to separate the partition plate 32 from the partition ring 31.
  • the compositions in the first compartment 14 and the second compartment 15 can go through the partition unit 3.
  • the user can shake the container 1000 so as to evenly mix the first composition and second composition.
  • the user can squeeze the tubular container body 1 in a normal way, and then the mixed compositions are extruded for use.
  • a double-chamber dispensing container for dispensing two compositions in the mixed state according to the present application, less elements are used in comparison to two separate tubes being used for storing two different formulas, easy for using because there needs reduced pressure for separating the partition unit which is rather friendly for the user, especially the elder users, and the hermetical sealing and mixing of the two compositions is guaranteed thanks to the partition unit.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Package Specialized In Special Use (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Abstract

A double-chamber dispensing container for dispensing two compositions in the mixed state, said container comprising: a substantially tubular container body, made of an elastically deformable material, having a bottom end which is closed, and an end having an opening, wherein the container body defines a chamber; a cap for enclosing the opening of the container body; a partition unit disposed inside the container body, between the bottom end and the end having the opening, wherein the partition unit closes the substantially tubular container body along a peripheral edge thereof so as to separate the chamber into a first compartment far from the bottom end and a second compartment near the bottom end, wherein the first compartment is configured to contain a first composition, and the second compartment is configured to contain a second composition. The partition unit includes a partition ring and a partition plate which are formed as one piece, and the partition plate is configured to be separated from the partition ring under the effect of a transverse activating pressure or force onto the container body.

Description

DOUBLE-CHAMBER DISPENSING CONTAINER FIELD OF THE INVENTION
The invention relates generally to a double-chamber dispensing container for dispensing two compositions in the mixed state.
BACKGROUND
The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.
In recent years, a growing trend has taken the world by storm-young people everywhere are embracing the vibrant and exciting world of hair coloring. This phenomenon is not just a trend. It is a lifestyle choice that allows the younger generation to showcase their unique personalities, creativity, and style. Hair color products for hair coloring are available in various forms.
In general, a hair color product includes two separate tubes-colorant and developer. During hair coloring, a user usually squeezes equal parts of colorant and developer from two separate tubes into a mixing bowl. Then the user uses an applicator brush to thoroughly mix the compositions as a smooth, consistent blend. This hair coloring process is very complicated to operate.
A multi-chamber dispensing container is known by WO9100094A1. This Application generally describes the use of a multi-chamber dispensing container for storing and, extemporaneously, dispensing a mixture of two liquids, in the present case a solution of papaverine sulfate and a basic solution such as bicarbonate of soda. It is necessary to separate the two solutions in order to prevent the precipitation of papaverine H during storage thereof. The two solutions are stored in a container body in the form of a rubber tube, presenting an end having an opening and a bottom end, in two chambers separated by a disc of plastics material. This disc is disposed perpendicularly to the container body and is of larger diameter than the inner diameter of the container body. In this way, the disc is maintained in place  by the elastic hold of the container body on the peripheral edge thereof. Dispensing means are also provided in the vicinity of the end having an opening of the container body, hermetically closing said opening, and take the form of an injection needle. Before activation, i.e., during storage, the two liquids are therefore hermetically separated by the disc. Activation of the dispensing container is effected by a displacement of the disc caused by the pressure of the hand and thumb in a reciprocating movement on the body of the container. The disc is thus caused to drop into the bottom of the tube, and the two solutions can mix. The mixture is then dispensed by injection into the body through the needle.
Regarding this type of multi-chamber dispensing container, there are some drawbacks to be addressed, such as, the pressure necessary for displacing the disc in order to be able to mix the two substances is quite high, as the diameter of said disc is larger than the inner diameter of the container body, and moreover, the disc is positively retained in the body via an annular groove provided on the inner wall of said container body. Thus, the displacement of the disc needs a sustained force.
It may be appreciated that there continues to be a need for a double-chamber dispensing container for dispensing two compositions in the mixed state, in which less elements are used in comparison to two separate tubes being used for storing two different formulas, easy for using because there needs reduced pressure for separating the partition unit which is rather friendly for the user, especially the elder users, and the hermetical sealing and mixing of the two compositions is guaranteed thanks to the partition unit, and in this respect, the present invention substantially fulfills this need.
SUMMARY
An object of the present invention is to provide a double-chamber dispensing container for dispensing two compositions in the mixed state and a method for producing the same, less elements are used in comparison to two separate tubes being used for storing two different formulas, easy for using because there needs reduced pressure for separating the partition unit  which is rather friendly for the user, especially the elder users, and the hermetical sealing and mixing of the two compositions is guaranteed thanks to the partition unit.
According to one advantageous embodiment, the invention relates to a double-chamber dispensing container for dispensing two compositions in the mixed state, said container comprising:
a substantially tubular container body, made of an elastically deformable material, having a bottom end which is closed, and an end having an opening, wherein the container body defines a chamber;
a cap for enclosing the opening of the container body;
a partition unit disposed inside the container body, between the bottom end and the end having an opening, wherein the partition unit closes the substantially tubular container body along a peripheral edge thereof so as to separate the chamber into a first compartment far from the bottom end and a second compartment near the bottom end, wherein the first compartment is configured to contain a first composition, and the second compartment is configured to contain a second composition;
wherein the partition unit includes a partition ring and a partition plate which are formed as one piece, and the partition plate is configured to be separated from the partition ring under the effect of a transverse activating pressure or force onto the container body.
In one aspect of the double-chamber dispensing container according to the present application, the partition ring and the partition plate are formed as one piece by bi-injection or overmolding or are mechanically assembled by force.
In another aspect of the double-chamber dispensing container according to the present application, the partition ring is transversely sealed onto the inner periphery of the substantially tubular container body preferably by means of laser welding or ultrasonic welding.
In another aspect of the double-chamber dispensing container according to the present application, the partition ring is made of the same material as that of the substantially tubular container body.
In another aspect of the double-chamber dispensing container according to the present application, the substantially tubular container body comprises, on its outer surface, an indicator for assisting a user to apply the transverse activating pressure or force thereon.
In another aspect of the double-chamber dispensing container according to the present application, the partition plate is made of a first material, and the partition ring is made of a second material which has a lower melting temperature than that of the first material.
In another aspect of the double-chamber dispensing container according to the present application, the second material includes HDPE, and the first material includes PET.
In another aspect of the double-chamber dispensing container according to the present application, mono material or two or more different materials are used for the partition ring and the partition plate which are mechanically assembled by force, and preferably the material includes PP.
In another aspect of the double-chamber dispensing container according to the present application, the partition plate is formed with a peripheral groove which has a depth in a direction perpendicular to a main surface of the partition plate, and the partition ring has a ridge protruding along its perimeter, and the ridge is configured to be in snap fit with the peripheral groove, and preferably, one or more ribs are diagonally extending in the partition ring.
In another aspect of the double-chamber dispensing container according to the present application, the first composition includes a colorant, and the second composition includes a developer.
In another aspect of the double-chamber dispensing container according to the present application, two slots are arranged on the left and right side of the outer surface of the cap.
According to another advantageous embodiment, the invention relates to a method for producing a double-chamber dispensing container for dispensing two compositions in the mixed state, the method including:
providing a partition unit including a partition ring and a partition plate,  wherein the partition ring and the partition plate are formed as one piece by bi-injection or overmolding or are mechanically assembled by force;
providing a substantially tubular container body, wherein the container body has a bottom end which is open, and an end having an opening for dispensing;
laser welding or ultrasonic welding the partition unit onto the substantially tubular container body, so that the partition ring is transversely sealed onto the inner periphery of the substantially tubular container body, wherein the partition unit separates the tubular container body into a first compartment far from the bottom end and a second compartment near the bottom end;
filling the first compartment with a first composition;
sealing the first compartment by closing a cap onto the opening of the container body;
filling the second compartment with a second composition; and
sealing the bottom end, so as to form a transverse seal to seal the second compartment.
In another aspect of the method for producing a double-chamber dispensing container according to the present application, a first material is first injected to form the partition plate, and a second material is then injected onto the partition plate to form the partition ring, wherein the second material has a lower melting temperature than that of the first material.
In another aspect of the method for producing a double-chamber dispensing container according to the present application, the partition ring is made of the same material as that of the substantially tubular container body.
In another aspect of the method for producing a double-chamber dispensing container according to the present application, the second material includes HDPE, and the first material includes PET.
In another aspect of the method for producing a double-chamber dispensing container according to the present application, an indicator is  formed on an outer surface of the substantially tubular container body, for assisting a user to apply the transverse activating pressure or force thereon.
In another aspect of the method for producing a double-chamber dispensing container according to the present application, the partition plate is formed with a peripheral groove which has a depth in a direction perpendicular to a main surface of the partition plate, and the partition ring has a ridge protruding along its perimeter, and the ridge is configured to be in snap fit with the peripheral groove, and preferably, one or more ribs are diagonally extending in the partition ring; and optionally, two slots are arranged on the left and right side of the outer surface of the cap for clamping during filling.
In another aspect of the method for producing a double-chamber dispensing container according to the present application, the first composition includes a colorant, and the second composition includes a developer.
In another aspect of the method for producing a double-chamber dispensing container according to the present application, mono material or two or more different materials are used for the partition ring and the partition plate which are mechanically assembled by force, and preferably the material includes PP.
Thanks to the double-chamber dispensing container and the method for producing the same according to the present application, less elements are used in comparison to two separate tubes being used for storing two different formulas, easy for using because there needs reduced pressure for separating the partition unit which is rather friendly for the user, especially the elder users, and the hermetical sealing and mixing of the two compositions is guaranteed thanks to the partition unit.
Further areas of applicability will become apparent from the description provided herein. It should be understood that the description and specific examples are intended for purposes of illustration only and are not intended to limit the scope of the present disclosure.
BRIEF DESCRIPTION OF THE FIGURES
The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way.
FIG. 1 shows a perspective view of a double-chamber dispensing container for dispensing two compositions in the mixed state according to one embodiment of the present invention.
FIG. 2 shows an exploded view of the double-chamber dispensing container according to one embodiment of the present invention, wherein a first compartment and a second compartment are imaginary, just for easy understanding the relationships for the elements of the container;
FIG. 3 shows a cross-sectional view of the double-chamber dispensing container according to one embodiment of the present invention.
FIG. 4 shows an exploded view of a partition unit of the double-chamber dispensing container according to one embodiment of the present invention.
FIG. 5 shows a cross-sectional view of the partition unit of the double-chamber dispensing container according to one embodiment of the present invention.
FIG. 6 shows a schematic view of the welding of the partition unit to a tubular container body of the double-chamber dispensing container according to one embodiment of the present invention.
FIG. 7 shows a schematic view of a process for producing a double-chamber dispensing container for dispensing two compositions in the mixed state according to one embodiment of the present invention.
DETAILED DESCRIPTION
The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, or uses.
The following detailed description of the present invention refers to the accompanying drawings, which illustrate specific embodiments in which the present invention may be implemented. These embodiments are described in sufficient detail to enable those skilled in the art to implement the present  invention. It should be understood that various embodiments of the present invention are different from each other, but need not be mutually exclusive.
With respect to the terms used in the present invention, general terms that are currently and widely used are selected in consideration of functions of the present invention. However, the meanings of the terms may be changed according to intention of those skilled in the art, a judicial precedent, emergence of a new technology, and the like. In addition, in certain cases, a term may be selected at discretion of the applicant. In such cases, the meaning of the term will be described in detail at the corresponding part in the description of the invention. Therefore, the terms used in the present invention should be defined based on the meanings of the terms and the entire descriptions provided herein without being simply limited to the names of terms.
In the present disclosure, when some part “includes” some elements, unless explicitly described to the contrary, it means that other elements may be further included but not excluded.
Hereinafter, a double-chamber dispensing container for dispensing two compositions in the mixed state according to one or more embodiments of the present invention will be described with reference to FIGS. 1 to 7.
Figures 1 to 3 illustrate a double-chamber dispensing container 1000 according to one embodiment of the present invention in exploded views and a cross-sectional view respectively.
As shown in Figures 1 to 3, the double-chamber dispensing container 1000 comprises a substantially tubular container body 1. In one example, the tubular container body 1 is made of an elastically deformable material, for example high-density polyethylene or polypropylene. In one embodiment, the tubular container body 1 is transparent or translucent, so that the user can easily view the contents therein. In the embodiment of the present invention, the tubular container body 1 includes a bottom end which is closed, and an end having an opening 13, wherein the container body defines a chamber. In one embodiment as shown in fig. 2, the tubular container body 1 includes a finish 11 on one end, and the finish 11 defines  an opening 13 for filling.
In one embodiment of the present invention, the double-chamber dispensing container 1000 further comprises a cap 2 for enclosing the opening 13 of the container body 1. The cap 2 is secured onto the finish 11. In order to apply an activating pressure or force to open the cap 2, the cap 2 may comprise, on its outer surface, a recess 24 for a finger to apply force to the cap 2. Moreover, in order to facilitate hold of the container 1000 by a user or during manufacturing or filling, preferably two slots 23 are arranged on the left and right side of the outer surface of the cap 2, which will be discussed below.
In one embodiment of the present invention, the cap 2 is a flip cap, and it includes a main body 21 and a cover 22. In one example, the cover 22 is articulated relative to the main body 21 by means of a hinge, especially a film hinge, which is not shown in the figures. In this way, the cap 2 can be easily open or closed by means of pivoting the cover 22 with respect to the main body 21.
In one embodiment of the present invention, the double-chamber dispensing container 1000 further comprises a partition unit 3. The partition unit 3 is disposed inside the container body 1, so as to hermetically divide the chamber of the tubular container body 1 into two chambers, i.e., a first compartment 14 far from the bottom end and a second compartment 15 near the bottom end. The first compartment 14 and second compartment 15 in fig. 2 are imaginary, just for easy understanding the position relationships for the elements in the container 1000. In one embodiment of the present invention, the first compartment 14 is configured to contain a first composition, and the second compartment 15 is configured to contain a second composition.
In one embodiment of the present invention, the partition unit 3 includes a continuous peripheral edge 311 as shown in fig. 4, disposed inside the tubular container body 1 of the container 1000, between the bottom end and the end having an opening 13, closing the tubular container body 1 hermetically along its peripheral edge 311. In this way, before activation of  the partition unit 3 by the user, the two compositions cannot come into contact with each other, and are effectively stored in hermetic manner. This makes it possible to store in the same container 1000 for a long period of time two compositions in the separated state which are relatively unstable when they come into contact with one another. In one example, the first composition includes a colorant, and the second composition includes a developer.
Preferably, the partition unit 3 is substantially in the form of a disc, for example circular or elliptic, but this shape may, of course, vary as a function of the circumferential shape of the container body 1.
In one embodiment of the present invention, the partition unit 3 includes a partition ring 31 and a partition plate 32. In one embodiment, the partition ring 31 and the partition plate 32 are formed as one piece by bi-injection or overmolding or are mechanically assembled by force, and the partition plate 32 is configured to be separated from the partition ring 31 under the effect of a transverse activating pressure or force onto the container body 1.
In one embodiment of the double-chamber dispensing container 1000 according to the present application, mono material or two or more different materials are used for the partition ring 31 and the partition plate 32 which are mechanically assembled by force, and preferably the material includes PP.
In one embodiment of the present invention, the partition plate 32 is made of a first material and the partition ring 31 is made of a second material which has a lower melting temperature than that of the first material. In one embodiment, the second material includes HDPE, and the first material includes PET. In one example, the first material has an injection temperature of about 260℃ -300℃, and the second material has an injection temperature of about 180℃-230℃. During the manufacturing of the partition unit 3, a first material is first injected into a die to form the partition plate 32. After the curing of the partition plate 32, a second material is then injected onto the partition plate 32 to form the partition ring 31. At this time,  as the melting temperature of the partition plate 32 is higher than that of the partition ring 31, the partition plate 32 is kept in a solidified state when injecting the second material to the partition plate 32, so that the second material is overmolded onto the partition plate 32, and thus a combination of the partition ring 31 and the partition plate 32 is formed. Moreover, there will be a mechanical bonding between the partition ring 31 and the partition plate 32, so that the partition ring 31 and the partition plate 32 are formed as one piece by bi-injection.
FIG. 4 shows an exploded view of a partition unit 3 of the double-chamber dispensing container 1000 according to one embodiment of the present invention. FIG. 5 shows a cross-sectional view of the partition unit 3 of the double-chamber dispensing container 1000 according to one embodiment of the present invention. As shown in fig. 4, the partition ring 31 includes a skirt 311 which constitutes a continuous peripheral edge of the partition unit 3 for hermetically closing the tubular container body 1. Ahollow cone 312 is formed as one piece with the skirt 311 and extends inwards and downwards from the top end of the skirt 311. In one example, one or more ribs 314 are diagonally extending in the partition ring 31, for supporting the partition plate 32. In one example, there is one or more ribs 314 extending in a horizontal plane in the hollow cone 312, and windows 313 are formed between the ribs 314 and the hollow cone 312. The ribs 314 are optional, and in comparison with the area of the windows 313, the areas of the ribs 314 are rather small, so as not influence the flowing through of the mixed compositions when the partition plate 32 is separated from the partition ring 31.
As shown in figs. 4-5, the partition plate 32 includes a disc 321, and there is a rim 323 on the circumference of the disc 321. Between the disc 321 and the rim 323, there is a peripheral groove 322 which has a depth in a direction perpendicular to a main surface of the partition plate 32. In one embodiment of the present invention, as shown in fig. 5, the partition ring 31 has a ridge 315 extending downwards from the hollow cone 312, and the ridge 315 protrudes along its perimeter, and the ridge 315 is configured to  be in snap fit with the peripheral groove 322. Moreover, the snap fit between the ridge 315 and the peripheral groove 322 forms a labyrinth seal, so as to improve the hermetical sealing between the first compartment 14 and second compartment 15. In one example, the hollow cone 312 of the partition ring 31 provides support to the partition plate 32, so that the partition plate 32 can only move away from the partition ring 31 in the downward direction as shown in figs. 4-5. After the partition plate 32 is separated from the partition ring 31, the two compositions can be mixed together by passing through the partition ring 31, in particular passing through the windows 313 thereof.
In one embodiment of the present invention, the partition ring 31 is constituted by the same material as that of the substantially tubular body, therefore for example of high-density polyethylene or polypropylene.
FIG. 6 shows a schematic view of the welding of the partition unit 3 to a tubular container body 1 of the double-chamber dispensing container 1000 according to one embodiment of the present invention. In one embodiment as shown in fig. 6, a partition unit 3 is loaded onto a jig 40. Then the partition unit 3 is inserted into the tubular container body 1 by means of the jig 40. After the partition unit 3 and the tubular container body 1 are fixed in position, a laser 41 is introduced to make a laser welding bend around the circumference of the tubular container body 1 in a position where the partition unit 3 is situated, such as a laser welding bend having a width of about 2-4 mm. In one example, the laser welding is performed by means of a laser 41 which is mounted on a rotation laser arm 42, which rotates around an axis of rotation S1, and the axis of rotation S1 is in coincident with a central axis S2 of the tubular container body 1.
FIG. 7 shows a schematic view of a process for producing a double-chamber dispensing container 1000 for dispensing two compositions in the mixed state according to one embodiment of the present invention. First of all, the tubular container body 1 is a hollow cylinder on the bottom end as shown in fig. 7a. The partition unit 3 is inserted into the tubular container body 1 from the open bottom end. As shown in fig. 6, a jig is used for supporting the partition unit 3 and the tubular container body 1 in position,  and then the partition unit 3 is welded to the tubular container body 1, so that the tubular container body 1 is divided into the first compartment near the finish 11 and the second compartment near the bottom end. Then, a pair of holding jigs 52 will clamp onto the slots 23 on the outer surface of the cap 2 so as to hold the tubular container body 1. In this way, during filling of the container 1000, there will be no or little pressure or damage to the partition unit area. During this time, a filling nozzle 51 will fill the first compartment 14 with the first composition, such as colorant, as schematically shown in fig. 7b.
After the first compartment 14 is filled with the first composition, the holding jigs 52 keep clamping onto the slots 23, and the cover 22 with be closed onto the main body 21 so as to seal the opening 13 and thus seal the first compartment 14, as schematically shown in fig. 7c. Thereafter, the tubular container body 1 will be put in a reversed position so that the second compartment 15 is on the top and the first compartment 14 which has been filled with the first composition is now at the bottom, as shown in fig. 7c. In a similar way, the second compartment 15 will be filled with the second composition, such as the developer, by means of another filling nozzle 53, as schematically shown in fig. 7d. After the second compartment 15 is filled with the second composition, the second compartment 15 will be closed and sealed by a transverse seal 12, as schematically shown in fig. 7e. In this way, the tubular container body 1 is sealed in both the first compartment 14 and the second compartment 15.
In one embodiment of the present invention, an indicator 16 is formed on an outer surface of the substantially tubular container body 1, for assisting a user to apply the transverse activating pressure or force thereon, as schematically shown in fig. 7e. The indicator 16 may be one or more lines on a circumference of the tubular container body 1 in a position near where the partition unit 3 is situated. In one example, the indicator 16 may be a relief on a circumference of the tubular container body 1. The indicator 16 may provide the user with a visual or tactile sensation.
When in use, the user may first press or squeeze the tubular container  body 1, preferably with the help of the indicator 16, so as to squeeze the partition unit 3 to separate the partition plate 32 from the partition ring 31. After the partition plate 32 is separated from the partition ring 31, the compositions in the first compartment 14 and the second compartment 15 can go through the partition unit 3. Then the user can shake the container 1000 so as to evenly mix the first composition and second composition. After the first composition and second composition are sufficiently mixed, the user can squeeze the tubular container body 1 in a normal way, and then the mixed compositions are extruded for use.
Thanks to a double-chamber dispensing container for dispensing two compositions in the mixed state according to the present application, less elements are used in comparison to two separate tubes being used for storing two different formulas, easy for using because there needs reduced pressure for separating the partition unit which is rather friendly for the user, especially the elder users, and the hermetical sealing and mixing of the two compositions is guaranteed thanks to the partition unit.
Aspects of the present disclosure have been described in detail with reference to the illustrated embodiments; those skilled in the art will recognize, however, that many modifications may be made thereto without departing from the scope of the present disclosure. The present disclosure is not limited to the precise construction and compositions disclosed herein; any and all modifications, changes, and variations apparent from the foregoing descriptions are within the scope of the disclosure as defined by the appended claims. Moreover, the present concepts expressly include any and all combinations and sub combinations of the preceding elements and features.
LIST OF REFERENCE NUMBERS
1           substantially tubular container body
2           cap
3           partition unit
11          finish
12          transverse seal
13          opening
14          first compartment
15          second compartment
16          indicator
21          main body
22          cover
23          slot
24          recess
31          partition ring
32          partition plate
40          jig
41          laser
42          rotation laser arm
51          filling nozzle
52          holding jig
53          filling nozzle
311         skirt
312         hollow cone
313         window
314         rib
315         ridge
321         disc
322         peripheral groove
323         rim
1000        double-chamber dispensing container
S1          axis of rotation
S2          central axis

Claims (15)

  1. A double-chamber dispensing container for dispensing two compositions in the mixed state, said container comprising:
    a substantially tubular container body, made of an elastically deformable material, having a bottom end which is closed, and an end having an opening, wherein the container body defines a chamber;
    a cap for enclosing the opening of the container body;
    a partition unit disposed inside the container body, between the bottom end and the end having an opening, wherein the partition unit closes the substantially tubular container body along a peripheral edge thereof so as to separate the chamber into a first compartment far from the bottom end and a second compartment near the bottom end, wherein the first compartment is configured to contain a first composition, and the second compartment is configured to contain a second composition;
    wherein the partition unit includes a partition ring and a partition plate which are formed as one piece, and the partition plate is configured to be separated from the partition ring under the effect of a transverse activating pressure or force onto the container body.
  2. The double-chamber dispensing container according to claim 1, wherein the partition ring and the partition plate are formed as one piece by bi-injection or overmolding or are mechanically assembled by force.
  3. The double-chamber dispensing container according to claim 1 or 2, wherein the partition ring is transversely sealed onto the inner periphery of the substantially tubular container body preferably by means of laser welding or ultrasonic welding.
  4. The double-chamber dispensing container according to claim 1 or 2, wherein the partition ring is made of the same material as that of the substantially tubular container body.
  5. The double-chamber dispensing container according to claim 1 or 2, wherein the substantially tubular container body comprises, on its outer surface, an indicator for assisting a user to apply the transverse activating pressure or force  thereon.
  6. The double-chamber dispensing container according to claim 1 or 2, wherein the partition plate is made of a first material and the partition ring is made of a second material which has a lower melting temperature than that of the first material, and optionally, the second material includes HDPE, and the first material includes PET.
  7. The double-chamber dispensing container according to claim 1 or 2, wherein mono material or two or more different materials are used for the partition ring and the partition plate which are mechanically assembled by force, and preferably the material includes PP.
  8. The double-chamber dispensing container according to claim 1 or 2, wherein the partition plate is formed with a peripheral groove which has a depth in a direction perpendicular to a main surface of the partition plate, and the partition ring has a ridge protruding along its perimeter, and the ridge is configured to be in snap fit with the peripheral groove, and preferably, one or more ribs are diagonally extending in the partition ring.
  9. The double-chamber dispensing container according to claim 1 or 2, wherein the first composition includes a colorant, and the second composition includes a developer.
  10. The double-chamber dispensing container according to claim 1 or 2, wherein two slots are arranged on the left and right side of the outer surface of the cap.
  11. A method for producing a double-chamber dispensing container for dispensing two compositions in the mixed state, including:
    providing a partition unit including a partition ring and a partition plate, wherein the partition ring and the partition plate are formed as one piece by bi-injection or overmolding or are mechanically assembled by force;
    providing a substantially tubular container body, wherein the container body has a bottom end which is open, and an end having an opening for dispensing;
    laser welding or ultrasonic welding the partition unit onto the substantially tubular container body, so that the partition ring is transversely sealed onto the inner periphery of the substantially tubular container body, wherein the partition  unit separates the tubular container body into a first compartment far from the bottom end and a second compartment near the bottom end;
    filling the first compartment with a first composition;
    sealing the first compartment by closing a cap onto the opening of the container body;
    filling the second compartment with a second composition; and
    sealing the bottom end, so as to form a transverse seal to seal the second compartment.
  12. The method for producing a double-chamber dispensing container according to claim 11, wherein a first material is first injected to form the partition plate, and a second material is then injected onto the partition plate to form the partition ring, wherein the second material has a lower melting temperature than that of the first material;
    optionally, the partition ring is made of the same material as that of the substantially tubular container body; and.
    optionally, the second material includes HDPE, and the first material includes PET.
  13. The method for producing a double-chamber dispensing container according to claim 11 or 12, wherein an indicator is formed on an outer surface of the substantially tubular container body, for assisting a user to apply the transverse activating pressure or force thereon.
  14. The method for producing a double-chamber dispensing container according to claim 11 or 12, wherein the partition plate is formed with a peripheral groove which has a depth in a direction perpendicular to a main surface of the partition plate, and the partition ring has a ridge protruding along its perimeter, and the ridge is configured to be in snap fit with the peripheral groove, and preferably, one or more ribs are diagonally extending in the partition ring; and optionally, two slots are arranged on the left and right side of the outer surface of the cap for clamping during filling.
    optionally, the first composition includes a colorant, and the second composition includes a developer.
  15. The method for producing a double-chamber dispensing container  according to claim 11 or 12, wherein mono material or two or more different materials are used for the partition ring and the partition plate which are mechanically assembled by force, and preferably the material includes PP.
PCT/CN2024/073236 2024-01-19 2024-01-19 Double-chamber dispensing container Pending WO2025152144A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2024/073236 WO2025152144A1 (en) 2024-01-19 2024-01-19 Double-chamber dispensing container
FR2402139A FR3158505B3 (en) 2024-01-19 2024-03-04 DUAL-CHAMBER DISPENSER CONTAINER

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2024/073236 WO2025152144A1 (en) 2024-01-19 2024-01-19 Double-chamber dispensing container

Publications (1)

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FR (1) FR3158505B3 (en)
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3635574A1 (en) * 1986-10-20 1988-04-21 Hilti Ag Two-chamber container with removable partition wall
US6189688B1 (en) * 1997-02-07 2001-02-20 Biodome Multi-chamber dispensing container for storing at least two substances, the extemporaneous mixture of these substances, and distribution of the mixture
US6544213B1 (en) * 1999-09-13 2003-04-08 Merck & Co., Inc. Dual compartment mixing and dispensing device
US20090301905A1 (en) * 2008-06-05 2009-12-10 Brian L. Bullard Apparatus and method for the separate storage and mixing of substances
US20150225130A1 (en) * 2014-02-10 2015-08-13 Joshua Hall Multi-Compartment, Portable Beverage Container
CN209582454U (en) * 2019-01-31 2019-11-05 张子元 A portable beverage bottle with instant drinking function
CN219428607U (en) * 2023-04-05 2023-07-28 河南健康广济生物技术有限公司 Packaging device capable of keeping activity of vitamin gel

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991000094A1 (en) 1989-06-28 1991-01-10 Finn Tranberg A new papaverine injection system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3635574A1 (en) * 1986-10-20 1988-04-21 Hilti Ag Two-chamber container with removable partition wall
US6189688B1 (en) * 1997-02-07 2001-02-20 Biodome Multi-chamber dispensing container for storing at least two substances, the extemporaneous mixture of these substances, and distribution of the mixture
US6544213B1 (en) * 1999-09-13 2003-04-08 Merck & Co., Inc. Dual compartment mixing and dispensing device
US20090301905A1 (en) * 2008-06-05 2009-12-10 Brian L. Bullard Apparatus and method for the separate storage and mixing of substances
US20150225130A1 (en) * 2014-02-10 2015-08-13 Joshua Hall Multi-Compartment, Portable Beverage Container
CN209582454U (en) * 2019-01-31 2019-11-05 张子元 A portable beverage bottle with instant drinking function
CN219428607U (en) * 2023-04-05 2023-07-28 河南健康广济生物技术有限公司 Packaging device capable of keeping activity of vitamin gel

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FR3158505B3 (en) 2026-02-13

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