EP3131827A1 - Ensemble d'emballage - Google Patents

Ensemble d'emballage

Info

Publication number
EP3131827A1
EP3131827A1 EP15780322.2A EP15780322A EP3131827A1 EP 3131827 A1 EP3131827 A1 EP 3131827A1 EP 15780322 A EP15780322 A EP 15780322A EP 3131827 A1 EP3131827 A1 EP 3131827A1
Authority
EP
European Patent Office
Prior art keywords
cap
spout
packaging assembly
vent
longitudinal axis
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.)
Granted
Application number
EP15780322.2A
Other languages
German (de)
English (en)
Other versions
EP3131827B1 (fr
Inventor
Thierry Christian Francis Dagnelie
Vincent Hubert M DE WILDE
Chris Van Den Wouwer
Francisco Miguel De Tavares Duarte Nogueira
Robb Eric Olsen
Jie XI
Mengdi ZHANG
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.)
Procter and Gamble Co
Original Assignee
Procter and Gamble Co
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 Procter and Gamble Co filed Critical Procter and Gamble Co
Publication of EP3131827A1 publication Critical patent/EP3131827A1/fr
Application granted granted Critical
Publication of EP3131827B1 publication Critical patent/EP3131827B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/32—Closures with discharging devices other than pumps with means for venting
    • 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
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/26—Caps or cap-like covers serving as, or incorporating, drinking or measuring vessels
    • 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
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/06—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages
    • B65D47/12—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having removable closures
    • 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
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/06—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages
    • B65D47/12—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having removable closures
    • B65D47/122—Threaded caps

Definitions

  • the present invention relates to a packaging assembly.
  • the present invention also relates to a liquid detergent product comprising a packaging assembly and a liquid detergent composition contained within the packaging assembly.
  • Liquid detergents have been increasingly preferred by usersover solid detergents, mainly due to their improved water solubility during a washing cycle.
  • viscous liquid detergents e.g., a liquid detergent composition with a viscosity of 500 centipoise ( “cps” ) when poured out of a container
  • cps centipoise
  • such viscous liquid detergents pose challenges to packaging due to the increased difficulty in dispensing them out of the packaging along with the increased viscosity. For example, the flow rate of the liquid detergent may become too slow to be acceptable by users, or the liquid detergent may form bulks which then block the opening of the packaging.
  • the dispensing issue associated with viscous liquid detergents is solved by providing a container having a spout with a longitudinal slot or trough that runs along the length of the spout, i.e., the spout per se is not circumferentially integral. Admittedly such a slotted opening avoids an unacceptable slow flow rate or the formation of bulks. However, a liquid detergent may flow out of such a slotted spout too fast, thereby causing undesirable turbulence. Moreover, a fast flow rate of the liquid detergent causes insufficient ventilation, i.e., not sufficient air could ventilate into the container at the same time when the liquid detergent is dispensed out of the container.
  • the flow may undesirably stop or at least have discontinuous flowduring dispensing due to the significantly decreased air pressure in the container.
  • the prior art discloses the combination of a vent with such a spout. But in the art the size and position of the vent are not aligned well with the spout such that the ventilation function of the vent is not consistently reliable, i.e., during dispensing a liquid detergent may flow out of the vent too.
  • a packaging assembly that provides a controlled dispensing of a liquid detergent composition, particularly viscous liquid detergent compositions, from the packaging assembly, i.e., a desired flow of the liquid detergent composition such as a proper flow rate, continuous flow, sufficient ventilation, or no turbulence.
  • the present invention is directed toa packaging assembly, comprising:
  • a container comprising an orifice and an opposing bottom surface, the bottom surface defining a longitudinal axis perpendicular thereto, wherein the longitudinal axis passes through the orifice;
  • a transition piece engaged to the orifice comprising:
  • a spout having a base end proximate to the orifice and an opposing pouring end having a circumferentially integral opening
  • the spout and the vent are in fluid communication with the orifice, and the vent has a cross-sectional area that is about 1/20 to about 1/3 of the cross-sectional area of the spout opening.
  • the present invention is directed to a liquid detergent product comprising the packaging assembly and a liquid detergent composition contained within the packaging assembly, wherein the liquid detergent composition has a viscosity value of about 200 to about 3, 000 cps, preferably of about 300 to about 2, 000 cps, more preferably of about 500 to about 1, 000 cps, at a shear rate of 20/sec and a temperature of 21°C.
  • Fig. 1 is a front view of a packaging assemblyaccording to one embodiment of the present invention.
  • Fig. 2A is a cross-sectional view of a transition piece according to one preferred embodiment of the present invention.
  • Fig. 2B is a top view of the transition piece in Fig. 2A.
  • Fig. 2C is a bottom view of the transition piece in Fig. 2A.
  • Fig. 3 is a cross-sectionalview of a transition piece comprising adouble sealing system according to another embodiment of the present invention.
  • Fig. 4 is a perspective view of a transition piece and a cap according to one preferred embodiment of the present invention.
  • Fig. 5 is a perspective view of the transition piece and cap in Fig. 4 when the cap is sealingly engaged to the transition piece.
  • Fig. 6 is a perspective view of a packaging assembly according to another preferred embodiment of the present invention.
  • Fig. 7 is a top view of the transition pieces of Comparative Examples 2A and 2B and Examples 1B and 1A according to the present invention from left to right (in sequence) .
  • the packaging assembly of the present invention provides a controlled dispensing of a liquid detergent composition from the packaging assembly. It has been surprisingly found that, by providing a spout having an opening that is circumferentially integral (i.e., without a longitudinal slot that runs along a partial or the entire length of the spout, in contrast to the spouts having a slot in the art) , in combination with a particularly sized vent located at a particular position relative to the opening, the packaging assembly herein addresses the issue associated with ventilation, thereby allowing for a desired, steady flow of the liquid detergent composition.
  • the liquid composition route i.e., the spout opening
  • the air route i.e., the vent
  • liquid detergent composition means a liquid composition relating to cleaning or treating: fabrics, hard or soft surfaces, hair, or any other surfaces in the area of fabric care, home care, and hair care.
  • the detergent compositions include, but are not limited to: laundry detergent, laundry detergent additive, fabric softener, carpet cleaner, floor cleaner, bathroom cleaner, toilet cleaner, sink cleaner, dishwashing detergent, air care, car care, shaving cream, hair shampoo, hair conditioner, and the like.
  • the liquid detergent composition is a liquid laundry detergent composition, a liquid fabric softener composition, a liquid dishwashing detergent composition, or a liquid hard surface cleaning composition, more preferably is a liquid laundry detergent composition or a liquid fabric softener composition, even more preferably is a liquid laundry detergent composition.
  • the liquiddetergent composition may be either aqueous or non-aqueous, and may be anisotropic, isotropic, or combinations thereof.
  • the term “container” refers to packaging suitable for containing compositions, particularly liquid compositions.
  • containers include a bottle, a tottle, a jar, a cup, and the like.
  • composition is “substantially free” of a specific ingredient, it is meant that the composition comprises less than a trace amount, alternatively less than 0.1%, alternatively less than 0.01%, alternatively less than 0.001%, by weight of the composition, of the specific ingredient.
  • the terms “comprise” , “comprises” , “comprising” , “include” , “includes” , “including” , “contain” , “contains” , and “containing” are meant to be non-limiting, i.e., other steps and other ingredients which do not affect the end of result can be added.
  • the above terms encompass the terms “consisting of” and “consisting essentially of” .
  • Fig. 1 illustrates a preferredembodiment of the packaging assembly 10 of the present invention.
  • the packaging assembly 10 comprises a container 100 having an orifice 101 in fluid communication with the interior volume of the container 100 from which contained liquid composition may flow out, and a bottom surface 102 opposing the orifice 101.
  • the container 100 comprises a peripheral wall 104 extending from the bottom surface 102 to the orifice 101.
  • the bottom surface 102 defines a longitudinal axis ( “L-Axis” as shown in Fig. 1) perpendicular thereto, and the longitudinal axis passes through the orifice 101, preferably intersecting the center point of the orifice 101.
  • the container 100 has a center line (not shown in the drawings) in its bottom surface 102.
  • the longitudinal axis is perpendicular to the center line of the bottom surface 102, and the longitudinal axis and center line together define a longitudinal section (not shown in the drawings) .
  • the container 100 is bilaterally symmetrical along the longitudinal section.
  • the container 100herein can be of any suitable size known in the art.
  • the container is configured to have an internal volume of from 250 mL to8, 000 mL, alternatively from500 mL to3, 000 mL, alternatively from 800 mL to2, 000mL.
  • the packaging assembly 10 comprises a transition piece 200 that can be engaged to the orifice 101 of the container 100, as shown in Fig. 1.
  • the transition piece 200 can be transparent or translucent or opaque, but preferably is opaque and has the same color as the container 100, thereby indicating users that it should not be removed from the container 100 under intended usage.
  • the transition piece 200 comprises: a spout 201 having a base end 202 proximate to the orifice 101 and an opposing pouring end 203 having a circumferentially integral opening 204; and a vent 209 adjacent to the base end 202.
  • the spout 201 and the vent 209 are in fluid communication with the orifice 101.
  • the spout 201 is configured to dispense a liquid composition that has flowed from the container 100 via the orifice 101, and the spout 201 comprises an interior surface 205 in contact with the liquid composition and an opposing exterior surface 206.
  • the spout interior surface 205 has one or more ribs 223 (shown in Figs. 2B and 2C) extending along the entire length of the spout 201, thereby enhancing the strength of the spout 201.
  • the vent 209 is configured to ventilate air into the container 100 during the dispensing and may also function as a drain hole so as to allow a residual liquid detergent composition remaining in the transition piece 200 to flow back into the container 100 after dispensing.
  • the spout opening 204 herein is relatively small.
  • the spout opening 204 has a cross-sectional area of 20 mm 2 to 400 mm 2 , more preferably of 50 mm 2 to 300 mm 2 , even more preferably of 100 mm 2 to 200 mm 2 .
  • Such a relatively small spout opening 204 enables a steady flow of a liquid composition from the container 100.
  • the container spouts having a relatively big opening in the art typically cause severe turbulence during dispensing.
  • the spout opening 204 has a particular ratio relative to the vent 209 in terms of cross-sectional area.
  • the vent 209 has a cross-sectional area that is 1/20 to 1/3, preferably 1/15 to 1/4, more preferably 1/10 to 1/5, of the cross-sectional area of the spout opening 204.
  • the minimum dimension of a vent 209 is generally interlinked with the liquid composition contained within the container 100, particularly with the viscosity of the composition.
  • the vent 209 is preferably not so tiny that it could be easily blocked by the liquid composition while dispensing.
  • the vent 209 has a cross-sectional area of 2 mm 2 to 50 mm 2 , preferably of 10 mm 2 to 40 mm 2 , more preferably of 20 mm 2 to 30 mm 2 .
  • the spout 201 may comprise multiple vents 209. In the multiple-vent execution, the multiple vents 209should have a total cross-sectional area that satisfies the ratio requirement relative to the spout opening 204. These multiple vents 209 could be arranged either separately or side-by-side, but preferably side-by-side adjacent to the base end 202 of the spout 201.
  • the spout 201 and the vent 209 are bilaterally symmetrical along the longitudinal section.
  • the spout opening 204 is positioned offset from the longitudinal axis within the longitudinal section, and in the same manner the vent 209 is oppositely (relative to the spout opening 204) offset from the longitudinal axis within the longitudinal section.
  • the spout opening 204 can be either slanted or perpendicular to the longitudinal axis, but preferably slanted. As illustrated in Fig. 2A, the spout opening 204 is slanted, comprising a first apex 207 and a first nadir 208 circumferentially opposing along the spout opening 204. In the slanted execution, the spout opening 204 could be of any acute angle, preferably from 15°to 85°, more preferably from 45°to 80°, relative to the longitudinal axis.
  • the spout 201 can be either parallel to the longitudinal axis or tilted, but preferably tilted towards the first apex 207.
  • Such a slanted spout opening 204 enables the packaging assembly 10 to provide a clear visual reminder to users of the most efficient way in dispensing a liquid composition contained in the packaging assembly 10, namely, tilting the packaging assembly 10 towards the first apex 207 of the slanted spout opening 204. Moreover, by slanting the spout opening 204 and tilting the spout 201 accordingly (i.e., towards the fist apex 207 of the slanted spout opening204) , the packaging assembly 10 of the present invention reduces the angle at which a container has to be tilted to dispense a liquid composition, thereby facilitating the dosing experience. Additionally, such a slanted spout opening 204 allows for larger cross-sectional dimensions.
  • the spout opening 204 is sharp so that the flow of a liquid composition being poured from the container 100 can be abruptly stopped in a manner avoiding or reducing residue of the composition that stays on the exterior surface 206orthat flows back into the container 100 through the vent 209, thereby maintaining cleanliness of the packaging assembly 10 during usage.
  • the sharpness of the spout opening 204 is preferably characterized by a chamfered edge (not shown in the drawings) of the spout opening 204. Such a chamfered edge is preferably straight at angle of 30°to 90°relative to the longitudinal axis.
  • the vent 209 and the spout opening204 are preferably generally aligned with respect to the longitudinal axis. As shown in Figs. 2A and 2B, the vent 209 and the spout opening 204 are aligned such that: the vent 209 and the first nadir 208 are within an angle of 0.25 ⁇ radians, preferably within an angle of 0.1 ⁇ radians of each other around the longitudinal axis.
  • the vent 209 and the spout opening 204 are preferably also aligned such that: the vent 209 and the first apex 207 are of an angle from 0.75 ⁇ to 1 ⁇ radians, preferably of an angle from 0.9 ⁇ to 1 ⁇ radians, of each other around the longitudinal axis.
  • the vent 209 has a cross-sectional area (i.e., is not a single point but includes multiple points) , by definition if any point on the vent 209 satisfies the angle requirement relative to the first nadir 208 or the first apex 207, then the vent is of the defined angle with the first nadir 208 or the first apex 207.
  • the packaging assembly 10 By aligning the vent 209 with a slanted spout opening 204, the packaging assembly 10 ensures an immediate, steady flow of a liquid composition from the container 100 once a user intentionally dispenses the composition in accordance with the visual reminder served by the slanted spout opening 204.
  • the spout 201 can be of any suitable length measured from the base end 202 to the spout opening 204 along the longitudinal axis, depending on factors such as the viscosity of the liquid detergent composition contained within the container 100, the sizes of the spout opening204 and the vent 209.
  • the spout has a length of 20 mm to 80 mm, alternatively from 20 mm to 60 mm, alternatively from 20 mm to 40 mm, alternatively from 40 mm to 60 mm, measured from the base end 202to the spout opening 204 along the longitudinal axis.
  • the spout 201 can be of the same or different cross-sectional areas that are perpendicular to the longitudinal axis, but preferably is tapered (i.e., the cross-sectional area perpendicular to the longitudinal axis becomes progressively narrower) towards the spout opening 204, as illustrated in Fig. 2A.
  • tapered spout further reduces the dispensing turbulence.
  • Both the spout opening 204 and the vent 209 can be of any suitable geometric shape, either symmetrical or asymmetrical.
  • the spout opening 204 has a shape selected from elliptical, round, semi-circled, triangular, rectangular, trapezoidal, pentagonal, or hexagonal.
  • the spout opening 204 has an elliptical shape, as shown in Fig. 2B.
  • the vent 209 has a shape selected from annular, annular sector, elliptical, round, semi-circled, triangular, rectangular, trapezoidal, pentagonal, or hexagonal.
  • the vent 209 has a shape aligned with the channel, preferably has an annular sector shape, as shown in Figs. 2B and 2C.
  • the transition piece 200 further comprises a channel 210, preferably an annular channel 210, surrounding the base end 202 of the spout 201; and a radially protruding shroud 213 surrounding the channel 210.
  • the vent 209 is located in the channel 210.
  • the shroud 213 comprises an exterior surface 215, an opposing interior surface 214, and a shoulder 217 therebetween.
  • the shroud interior surface 214 is facing the spout exterior surface 206, thereby forming a void 219 between the shroud 213 and the spout 201.
  • the channel 210 defines the bottom boundary of the void 219.
  • both the channel 210 and the shroud 213 are annular around the longitudinal axis.
  • the channel 210 can be either slanted or perpendicular to the longitudinal axis, but preferably is slanted. As illustrated in Fig. 2A, the channel 210 is slanted, comprising a second apex 211 and a second nadir 212 circumferentially opposing along the channel 210. In the slanted execution, the channel 210 can be of any acute angle, preferably from 5°to 85°, more preferably from 20°to 70°, relative to the longitudinal axis.
  • the vent 209 is located at the second nadir 212 of the channel 210 as to allow a liquid composition to gravitationally flow back into the container 100 when in an upright position.
  • vent 209 and the channel 210 are further aligned such that: the vent 209 and the second apex 211 are of an angle from 0.75 ⁇ to 1 ⁇ radians, preferably of an angle from 0.9 ⁇ to 1 ⁇ radians, of each other around the longitudinal axis. Since the vent 209 has a cross-sectional area (i.e., is not a single point but includes multiple points) , by definition if any point on the vent 209 satisfies the angle requirement relative to the second apex 211, then the vent and the second apex 211are of the defined angle.
  • the multiple vents 209 is located in the channel 210, more preferably one of the multiple vents 209 is located at the second nadir 212 of the channel 210. Even more preferably, the multiple vents 210 are arranged side-by- side, located in the channel 210, wherein one of the multiple vents 209 is located at the second nadir 212 of the channel 210.
  • the packaging assembly 10 of the present invention allows the residue of a liquid detergent composition to flow back from its opening to container utterly and efficiently after dispensing, thereby preventing the residue from accumulating and drying.
  • the transition piece 200 comprises a double sealing system: a first sealing means 220 configured to seal the transition piece 200 with the container 100; and a second sealing means 221 configured to seal the transition piece 200 with a cap 300.
  • the first sealing means 220 and the second sealing means 221 can be located at any suitable positions of the transition piece 200.
  • the container100 comprises a corresponding container sealing means 103 disposed on the container peripheral wall 104 proximate to the orifice 101 as shown in Fig. 1
  • the cap 300 comprises a corresponding cap sealing means 304 disposed on the cap peripheral wall 305 proximate to the cap opening 301 as shown in Fig. 4.
  • Fig. 3 illustrates a preferredembodiment of the transition piece 200 having such a double sealing system, sealed with a container sealing means 103 and a cap sealing means 304.
  • the shroud 213 further comprises a fastener surface 218 on the underside of the shroud exterior surface 215, and the first sealing means 220is disposed on the shroud fastener surface 218.
  • a portion of the container peripheral wall 104 proximate to the orifice 101 is inserted between the shroud interior surface 214 and shroud exterior surface 215, and the container sealing means 103 matches with the first sealing means 220.
  • the second sealing means 221 is disposed on the shroud interior surface 214.
  • the cap sealing means 304 is aligned with the void 219 of the transition piece 200 so as to be inserted into the void 219 and to seal with the second sealing means 221.
  • the cap further comprises a shoulder 303 abutting the cap sealing means 304, and the cap shoulder 303 is preferably aligned with the shroud shoulder 217 such that they connect or parallel to each other, thereby enhancing the connection between the transition piece 200 and the cap 300.
  • Each pair of sealing means (namely, the first sealing means 220 and its corresponding container sealing means 103, and the second sealing means 221 and its corresponding cap sealing means 304) can be of any suitable sealing technologies in the art, such as interlocking corresponding threads, or a lug and groove combination.
  • each pair of sealing means comprises interlocking corresponding threads helically disposed on the shroud fastener surface 218 and the container 100, or on the shroud interior surface 214 and the cap 300, as shown in Fig. 3.
  • the shroud 213 further comprises an auxiliary sealing means in addition to the first and second sealing means 220, 221.
  • the auxiliary sealing means is preferably configured to enhance the connection of the transition piece 200 with the container 100 or the cap 300.
  • the auxiliary sealing means can be disposed at any suitable position of the shroud 213, but preferably above the first sealing means 220.
  • the auxiliary sealing means can be of any suitable sealing technologies in the art, such as a bending surface of any sort.
  • the bending surface can be a bending ring, which connects with the opposing surface in a continuous manner imposing a minimum pressure in all its length, or alternatively be a seal aligning the surfaces of the two opposing parts to be sealed in a parallel manner.
  • a plug seal 222 i.e., an obstruction protruded from the shroud 213, which bends when sealed with a corresponding sealing means
  • An example of the seal formed between two aligned surfaces is known as a flat wall seal (i.e., a flat wall constituting an integral part of a surface of the shroud 213, which deforms when sealed with a corresponding sealing means.
  • the auxiliary sealing means is a plug seal 222 disposed on the underside of the shroud shoulder 217, above the first sealing means 220, as illustrated in Fig. 3.
  • the plug seal 222 bends but its deformation does not expand to any other portions of the transition piece 200, i.e., without deforming the transition piece 200 except for the plug seal 222. This is due to the nature of the plug seal 222 where the connecting area between the obstruction and its corresponding part (in this case the transition piece 200) is thin versus the flat wall seal where the contacting surfaces form the seal and therefore enables bending through the entire transition piece 200.
  • the plug seal 222 allows the transition piece 200 to accommodate to multiple dimensions of container necks.
  • This improved applicability of the transition piece 200 to a wide variety of containers 100 significantly reduces the variability of industry process present in large scale production, e.g., dimensional variations when a bottle is produced with multiple plastic resins, which, due to the nature of the plastic resins, has wide dimensional variations.
  • the non-deformation of the transition piece 200 ensures a relatively low variation of opening torques in term of the connection with the cap 300 since the second sealing means 221 that is configured to seal with the cap 300 is not negatively impacted by any deformation. Therefore, by adopting a plug seal 222 as an auxiliary sealing means, the packaging assembly 10 of the present invention allows the combination of a variety of containers and caps whilst maintaining a low variation of cap opening torques.
  • such an independent transition piece is not utilized, and accordingly the direct interaction of a container and cap requires the perfect match between the container and the cap and causes an undesired high variation of opening torques when combining different containers and caps.
  • the shroud exterior surface 215 has a set of linear indentations 216, as can be seen in Figs. 4 and 5.
  • a set of linear indentations 216 could be present either circumferentially around the shroud exterior surface 215 or at a portion of the shroud exterior surface 215, but preferably circumferentially around the shroud exterior surface 215.
  • the provision of the set of linear indentations enables increased friction, which is desired when a user holds the packaging assembly 10 by grasping the transition piece 200 or when he removes the cap 300 (e.g., screw off the cap 300) by twisting the cap 300 and the transition piece 200 in opposite directions.
  • Figs. 4 and 5 there is shown a preferredembodiment of the packaging assembly 10 of the present invention, which further comprises a cap 300 removably sealingly engaged to the transition piece 200.
  • Fig. 4 shows a cap 300 that is disengaged from the transition piece 200
  • Fig. 5 shows a cap that is sealingly engaged to the transition piece 200.
  • sealingly engaged it is meant that the cap 300 does not leak a quantity of a liquid detergent composition from the container 100 or the transition piece 200, under typical stresses to the cap300 or the container 100 or the transition piece 200 that occur during manufacturing, packaging, shipping, handling, storage, and use of the packaging assembly 10 and liquid detergent composition contained therein.
  • Typical stress is quantified for example as a drop test of a full capped container, on its side or bottom, from a height of 1.5m or less, preferably 0.8m or less, or alternatively a pressure build inside a capped container below necessary to overcome a seal pressure of 5000 kPa.
  • the cap 300 is configured to enclose the spout 201, and the cap 300 is in fluid communication with the spout 201 when sealingly engaged to the transition piece 200.
  • the cap 300 is a dispensing cap, i.e., a user first dispenses a liquid detergent composition from the container 100 to the dispensing cap and then dispenses the composition from the dispensing cap to a washing machine or a washing basin.
  • the cap 300 preferably has an internal volume of 10 mL to 250 mL, preferably 30 mL to 150 mL, more preferably 50 mL to 100 mL.
  • the internal volume of the cap 300 can be depending on factors such as the internal volume of the container 100 and/or the concentration of the liquid detergent composition contained within the container 100.
  • the internal volume of the cap 300 may be small, e.g., 40 mL.
  • the dispensing cap 300 in combination with the spout 201 that has a circumferentially integral opening 204, enables a precise, quick dosing of a liquid detergent composition, particularly of concentrated liquid detergent compositions.
  • At least a portion of the cap 300, preferably the entire cap 300, can be transparent or translucent or opaque, but preferably is transparent, thereby allowing for a precise dosing of users.
  • the cap 300 is marked with one or more volumetric indicia, such as indicium at 15 mL, 50 mL, and 65 mL.
  • the cap 300 comprises an opening 301, a base 302, and a peripheral wall 305 extending from the base 302 to the opening 301.
  • the cap peripheral wall 305 can comprise an exterior surface and an opposing inner surface.
  • the cap exterior surface is generally rough, more preferably has a number of dots (not shown in the drawings) to roughen the surface, thereby enabling a desired friction when a user tries to sealingly engage the cap 300 to or remove the cap 300 from the transition piece 200.
  • the cap 300 can be of any suitable height.
  • the cap 300 has a height with relevant to the length of the spout 201, particularly a height longer than the length of the spout 201.
  • the cap 300 has a height of 20 mm to 100 mm, preferably from 30 mm to 80 mm, more preferably from 40 mm to 70 mm, measured along the longitudinal axis when free standing, i.e., when the cap 300 stands on its base 302.
  • the spout 201 has a length of 20 mm to 80 mm measured from the base end 202 to the spout opening 204 along the longitudinal axis, and the height of the cap 300 is longer, preferably slightly longer than the length of the spout 201.
  • the cap opening 301 can be of any geometric shape, but preferably is aligned with the void 219 of the transition piece 200 in terms of shape, and more preferably is of a round shape.
  • the cap opening 301 preferably has a cross-sectional area that is larger than the cross-sectional area of the spout opening 204, thereby ensuring the spout 201 to be inserted into the cap 300 and enclosed when the cap 300 is sealingly engaged to the transition piece 200.
  • the spout opening 204 has a cross-sectional area that is less than 50%, preferably less than 40%, more preferably less than 30%, of the cross-sectional area of the cap opening 301, thus enabling a desired flow of a liquid composition from the transition piece 200 to the cap 100.
  • the cap opening 301 can have a weir (not shown in the drawings) configured to provide a more precise delivery of a liquid detergent composition by constricting the flow of the composition from the cap 300.
  • the weir can be of any common shapes suitable for weirs, including a V shape, a semicircular shape, a trapezoidal shape, a multilevel weir having discontinuous function describing the hydraulic radius, or any other such shape that constricts flow of liquid detergent compositions.
  • the cap base 302 serves as a stand when the cap 300 is filled with a liquid composition, i.e., the cap 300 is upside down from the embodiment as shown in Fig. 4.
  • the cap base 302 is preferably generally flat. More preferably, as shown in Fig. 5, the cap base 302 is slightly concave towards its center, thereby enabling a steady standing of the cap 300.
  • the cap 300 can be of any suitable shape, such as an obconic shape, a cylindrical shape, a spherical shape, a cubic shape, a cuboid shape.
  • the cap 300 preferably has an obconic shape or a cylindrical shape, more preferably has an obconic shape as shown in Fig. 5, when sealingly engaged to the transition piece 200 (i.e., when the cap sealing means 304 is hidden from view) .
  • Such an obconic shape facilitates disengaging the cap 300 from the transition piece 200 and also enhances a steady standing particularly when the cap 300 is filled with a liquid composition.
  • the packaging assembly 10 of the present invention can further comprise a handle 400.
  • the handle 400 can be either a through handle (i.e., a completely open space through which fingers and/or thumb can be inserted) or a non-through handle (i.e., certain portion of a container depresses to form a grip without a completely open space) .
  • a non-through handle is described in U.S. Patent Application No. 2013/0270280A1.
  • the handle 400 is a through handle, as shown in Fig. 6.
  • the through handle 400 has a cross-sectional area of 5 cm 2 to50 cm 2 , preferably 10 cm 2 to35cm 2 , more preferably 15 cm 2 to30 cm 2 .
  • the handle 400 can be located at any suitable position of the container 100, e.g., at the top of the container 100, at the bottom of the container 100, at a side of the container 100. Preferably the handle 400 is located at a side of the container 100, but bilaterally symmetrical along the longitudinal section.
  • the handle 400 and the vent 209 are generally aligned with respect to the longitudinal axis, preferably are aligned such that: the handle 400 and the vent 209 are within an angle of 0.25 ⁇ radians, preferably within an angle of 0.1 ⁇ radians of each other around the longitudinal axis.
  • the handle 400 and the spout opening 204 are aligned such that: the handle 400 and the first apex 207 are of an angle from 0.75 ⁇ to 1 ⁇ radians, preferably of an angle from 0.9 ⁇ to 1 ⁇ radians of each other around the longitudinal axis. Since both the handle 400 and the vent 209 have a cross-sectional area (i.e., are not a single point but includes multiple points) , by definition if any point on the handle 400 or the vent 209 satisfies the above angle requirements, then the relevant objects (the handle 400, the vent 209, and the first apex 207) are of the defined angle.
  • Such a side located handle 400 enables the packaging assembly 10 to provide a clear visual reminder to users of the most efficient way in dispensing a liquid composition contained in the packaging assembly 10, namely, tilting the packaging assembly 10 by lifting the side of the container 100 having the handle 400. Moreover, by aligning the handle 400 with the vent 209 and the slanted spout opening 204, the packaging assembly 10 ensures an immediate, steady flow of a liquid composition from the container 100 once a user intentionally dispenses the composition in accordance with the visual reminder served by the slanted spout opening 204.
  • Each component of the packaging assembly10 of the present invention can be made of any suitable material, such as glass, metal, polymer, and the like, but preferably is made of polymer.
  • the container 100, the transition piece 200, and the cap 300 can be made of the same or different materials.
  • each of them is independently made of a polymeric material selected from the group consisting of polypropylene (PP) , polyethylene (PE) , polycarbonate (PC) , polyamides (PA) polyethylene terephthalate (PET) , polyvinylchloride (PVC) , polystyrene (PS) , and a combination thereof.
  • PP polypropylene
  • PE polyethylene
  • PC polycarbonate
  • PA polyamides
  • PET polyethylene terephthalate
  • PVC polyvinylchloride
  • PS polystyrene
  • Each component of the packaging assembly10 of the present invention can be made by any suitable process known in the art, depending on factors like the material of the component or the property criteria required for the component.
  • Non-limiting examples of processes include: extrusion blow molding (EBM) , injection molding (IM) , injection blow molding (IBM) , and injection stretch blow molding (ISBM) , thermoforming, compression molding, compression blow molding, injection and blow (I&B) .
  • EBM extrusion blow molding
  • IM injection molding
  • IBM injection blow molding
  • ISBM injection stretch blow molding
  • the container 100 is made by EBM
  • the transition piece 200 is made by IM
  • the cap 300 is made by ISBM.
  • the portion of the transition piece 200 that is expected to be in contact with a liquid composition is relatively smooth, and more preferably is produced industrially in a smooth manner.
  • the mold for producing the transition piece 200 has a suitable mold finish, preferably has a VDI 3400 finish standard of 12 to 35, preferably 20 to 28, more preferably 22 to 26.
  • the term “mold finish” herein refers to the surface texture and/or smoothness of the surface of a mold.
  • VDI 3400 finish standard is a widely accepted standard in the industry for defining the polishing standard on mold finish.
  • VDI 3400 finish standard includes a scale of 0 to 45 for mold finish, and as the number increases, the surface of the indicated mold is rougher.
  • the preferred mold finish enables a transition piece 200 that has reduced friction with a liquid composition and thus less turbulence during dispensing, as well as less residules after the dispensing.
  • the portions of the cap 300 and the container 100 that are expected to be in contact with a liquid composition are preferably smooth and produced in a relatively smooth mold finish.
  • the packaging assembly of the present invention can contain any common liquid detergent compositions and accommodate to a variety of composition viscosities.
  • the liquid detergent composition has a certain viscosity so as to be dispensed form the packaging assembly properly.
  • the liquid detergent composition has a viscosity value of 200 to 3, 000 cps, more preferably 300 to 2, 000 cps, even more preferablyof 500 to 1, 000 cps, at a shear rate of 20/sec and a temperature of 21°C.
  • the viscosity at a shear rate of 20/sec is also referred to as a “pouring viscosity” since the shear rate of dispensing a liquid composition from a container is around 20/sec.
  • typically a liquid composition having a pouring viscosity of above 200 cps is referred to as a “viscous liquid composition” .
  • a “resting viscosity” characterizes the viscosity of a liquid composition when resting, i.e., at a shear rate of around 1/sec.
  • the value of the resting viscosity of a liquid composition may be the same or different from that of the pouring viscosity of the composition, depending on ingredients constituting the composition.
  • the liquid detergent composition herein has a viscosity value of 500 to 6, 000 cps, preferably of 800 to 3, 000 cps, more preferably of 1, 500 to 2, 500 cps, at a shear rate of 1/sec and a temperature of 21°C.
  • the liquid detergent composition herein may comprise one or more ingredients.
  • Suitable materials include but are not limited to: anionic surfactants, cationic surfactants, nonionic surfactants, amphoteric surfactants, fatty acids, builders, rheology modifiers, chelating agents, dye transfer inhibiting agents, dispersants, enzymes, and enzyme stabilizers, catalytic materials, bleach activators, hydrogen peroxide, sources of hydrogen peroxide, preformed peracids, polymeric dispersing agents, clay soil removal/anti-redeposition agents, brighteners, suds suppressors, dyes, photobleaches, structure elasticizing agents, fabric softeners, carriers, hydrotropes, processing aids, solvents, hueing agents, anti-microbial agents, perfume oils, perfume microcapsules, and/or pigments.
  • the liquid detergent composition comprises an anionic surfactant.
  • anionic surfactants include: linear alkylbenzene sulfonate (LAS) , preferably C 10 -C 16 LAS; C 10 -C 20 primary, branched-chain and random alkyl sulfates (AS) ; C 10 -C 18 secondary (2, 3) alkyl sulfates; sulphated fatty alcohol ethoxylate (AES) , preferably C 10 -C 18 alkyl alkoxy sulfates (AE x S) wherein preferably x is from 1-30, more preferably x is 1-3; C 10 -C 18 alkyl alkoxy carboxylates preferably comprising 1-5 ethoxy units; mid-chain branched alkyl sulfates as discussed in US 6,020,303 and US 6,060,443; mid-chain branched alkyl alkoxy sulfates as discussed in US 6,008,181 and
  • the composition comprises an anionic surfactant selected from the group consisting of LAS, AES, AS, and a combination thereof, more preferably selected from the group consisting of LAS, AES, and a combination thereof.
  • the total level of the anionic surfactant (s) may be from 5%to 95%, alternatively from 8%to 70%, alternatively from 10%to 50%, alternatively from 12%to 40%, alternatively from 15%to 30%, by weight of the liquid detergent composition.
  • the liquid detergent composition of the present invention comprises a rheology modifier (also referred to as a “structurant” in certain situations) , which functions to adjust the viscosity of the composition so as to be more applicable to the packaging assembly.
  • the rheology modifier herein can be any known ingredient that is capable of adjusting rheology to a liquid composition, such as those disclosed in U.S. Patent Application Nos. 2006/0205631A1, 2005/0203213A1, and U.S. Patent Nos. 7294611, 6855680.
  • the rheology modifier is selected from the group consisting of hydroxy-containing crystalline material, polyacrylate, polysaccharide, polycarboxylate, amine oxide, alkali metal salt, alkaline earth metal salt, ammonium salt, alkanolammonium salt, C 12 -C 20 fatty alcohol, di-benzylidene polyol acetal derivative (DBPA) , di-amido gallant, a cationic polymer comprising a first structural unit derived from methacrylamide and a second structural unit derived from diallyl dimethyl ammonium chloride, and a combination thereof.
  • DBPA di-benzylidene polyol acetal derivative
  • the rheology modifier is a hydroxy-containing crystalline material generally characterized as crystalline, hydroxyl-containing fatty acids, fatty esters and fatty waxes, such as castor oil and castor oil derivatives. More preferably the rheology modifier is a hydrogenated castor oil (HCO) .
  • HCO hydrogenated castor oil
  • Therheologymodifier can be present at any suitable level in the liquid detergent composition.
  • the rheology modifier is present from 0.05%to 5%, preferably from 0.08%to 3%, more preferably from 0.1%to 1%, by weight of the composition, in the composition.
  • liquid detergent product comprising the packaging assembly and the liquid detergent composition as discussed above.
  • the liquid detergent composition is able to be flowed out of the packaging assembly at a desired flow rate, preferably at a flow rate of 10 mL/s to 40 mL/s, alternatively of 15 mL/s to 38 mL/s, alternatively of 20 mL/s to about 35 mL/s.
  • the packaging assembly herein is designed as to dispense a liquid detergent composition with a certain viscosity value (pouring viscosity) from the packaging assembly at the most desirable flow rate.
  • a certain viscosity value pouring viscosity
  • the liquid detergent product of the present invention is configured to match a liquid detergent composition having a certain viscosity value with a packaging assembly having a suitable design.
  • the liquid detergent composition has a viscosity value of 300 to 800 cps at a shear rate of 20/sec and a temperature of 21°C (i.e., a relatively low pouring viscosity)
  • the spout has a length of 40 mm to 60 mm measured from the base end to the spout opening along the longitudinal axis
  • the vent has a cross-sectional area of 25 mm 2 to 50 mm 2 , wherein the liquid detergent composition is able to be flowed out of the packaging assembly at a flow rate of 30 mL/sto 40 mL/s.
  • the liquid detergent composition has a viscosity value of 800 to 3, 000 cps at a shear rate of 20/sec and a temperature of 21°C (i.e., a relatively high pouring viscosity)
  • the spout has a length of 30 mm to 40 mm measured from the base end to the spout opening along the longitudinal axis
  • the vent has a cross-sectional area of 15 mm 2 to 25 mm 2 , wherein the liquid detergent composition is able to be flowed out of the packaging assembly at a flow rate of 15 mL/s to 30 mL/s.
  • the viscosity is measured using an AR G2 rheometer (TA Instrument Ltd. ) , with a truncated cone spindle having an angle of 1°59’ 24” and a gap of 49 microns.
  • the shear rate increases from 1 s -1 to 500 s -1 , and the rheology is read when the measurement achieves ⁇ 5%variation at each shear rate. All the measurements are done at 21°C.
  • Examples herein are meant to exemplify the present invention but are not used to limit or otherwise define the scope of the present invention.
  • Examples1A –1B are packaging assemblies according to the present invention
  • Examples 3A –3D are liquid laundry detergent composition examples according to the present invention
  • Examples 2A –2B are comparative examples of certain packaging assemblies in the art.
  • Fig. 7 illustrates the transition pieces of Comparative Examples 2A and 2B and Examples 1B and 1A in sequence (from left to right) .
  • Example 1A is the packaging assembly as shown in Fig. 6. Specifically, the container of Example 1A has an internalvolume of 2000mL, and the cap of Example 1A has an internal volume of 80 mL.
  • the transition piece as used in Example 1A is exactly the same as the one shown in Figs. 2A, 2B, and 2C.
  • the spout opening of the transition piece has a cross-sectional area of about 177mm 2
  • the vent has a cross-sectional area of about 30 mm 2 .
  • the spout has a length of about 55 mm measuredfrom its base end to the spout opening along the longitudinal axis.
  • the packaging assembly of Example 1B comprises the same container and cap as Example 1A, but has a slightly different transition piece.
  • the 3 rd transition piece (from left) as illustrated in Fig. 7 is the one used for Example 1B.
  • This transition piece has a circumferentially integral spout opening and 5 tiny vents arranged side-by-side.
  • the spout opening therein has a cross-sectional area of about 154mm 2
  • the 5 vents have a total cross-sectional area of about 12 mm 2 .
  • the spout has a length of about 45 mm measuredfrom its base end to the spout opening along the longitudinal axis.
  • Example 1 the container is made by EBM, the transition piecesare made by IM, and the cap is made by ISBM.
  • the packaging assemblies of Comparative Examples 2A–2B comprise the same container and cap as Example 1, but have different transition pieces, as shown in Fig. 7.
  • the transition piece of Example 2A has a relatively large spout opening (having a cross-sectional area of about 320 mm 2 )
  • the opening spout therein has a longitudinal slot along the entire length of the spout, i.e., the spout per se is not circumferentially integral.
  • the transition piece of Example 2B has a longitudinal slot along the entire length of its spout albeit having a relatively small spout opening (having a cross-sectional area of about 110 mm 2 ) .
  • Each of the transition pieces of Examples 2A and 2B has a vent abutting the slot of the spout therein, as shown in Fig. 7, in contrast to a vent separated from a spout as in Examples 1A and 1B.
  • the lengths of the spouts of the transition pieces of Examples 2A –2B measured from their base end to the spout opening along the longitudinal axis are about 45 mm and 50 mm, respectively.
  • Both the transition pieces of Examples 2A –2B are made by IM.
  • Example 3 Formulations of liquid laundry detergent compositions
  • liquid detergent compositions of Examples 3A–3D are prepared by the following steps:
  • step b) cooling down the temperature of the combination obtained in step b) to 25°C;
  • each ingredient in the composition is present in the level as specified for Examples 3A –3C in Table 1.
  • Comparative experiments of assessing the flow rates of the liquid laundry detergent compositions of Examples 3A–3C by dispensing them from the packaging assemblies of Examples 1A–1B and Examples 2A–2B, respectively, are conducted.
  • the containers are full of a liquid laundry detergent composition.
  • the liquid laundry detergent composition is dispensed from the container (particularly from each transition piece) to the cap.
  • the container is tilted at an angle of about 30° relative to the longitudinal axis.
  • the flow rates of the dispensing, as well as the viscosity of the compositions, are shown in Table 2.
  • the viscosity is measured at a shear rate of 20/sec and a temperature of 21°C, according to the method for determining of viscosity for liquid compositions as described hereinabove.
  • the packaging assemblies according to the present invention demonstrate desired flow rates (e.g., a flow rate of 10 mL/sto 40 mL/s) across all tested liquid laundry detergent compositions.
  • desired flow rates e.g., a flow rate of 10 mL/sto 40 mL/s
  • Comparative Example 2A provides a dispensing flow rate that is too fast, thereby causing undesired turbulence during the dispensing.
  • the packaging assembly of Comparative Example 2B shows an unacceptable slow flow rate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Detergent Compositions (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Packages (AREA)

Abstract

L'invention concerne un ensemble d'emballage (10) comprenant un récipient (100) et un élément de transition (200) qui comprend un bec verseur (201) muni d'une ouverture (204) intégrée dans sa circonférence et d'un évent (209) placé adjacent à l'extrémité de base (202) du bec verseur (201). Le bec verseur (201) et l'évent (209) présentent un rapport particulier concernant leur zone de section transversale. L'ensemble d'emballage (10) permet une distribution contrôlée d'une composition de détergents liquides, en particulier de compositions de détergents liquides visqueuses.
EP15780322.2A 2014-04-18 2015-02-25 Ensemble d'emballage Active EP3131827B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PCT/CN2014/075693 WO2015157992A1 (fr) 2014-04-18 2014-04-18 Ensemble d'emballage
PCT/CN2015/073262 WO2015158183A1 (fr) 2014-04-18 2015-02-25 Ensemble d'emballage

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EP3131827A1 true EP3131827A1 (fr) 2017-02-22
EP3131827B1 EP3131827B1 (fr) 2022-03-16

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EP (1) EP3131827B1 (fr)
JP (1) JP6334806B2 (fr)
CN (2) CN112078958A (fr)
AR (1) AR100130A1 (fr)
CA (1) CA2943805A1 (fr)
MX (1) MX2016013628A (fr)
WO (2) WO2015157992A1 (fr)
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CN106458383A (zh) 2017-02-22
MX2016013628A (es) 2017-02-28
WO2015158183A1 (fr) 2015-10-22
US20150298875A1 (en) 2015-10-22
CA2943805A1 (fr) 2015-10-22
ZA201606672B (en) 2018-11-28
JP6334806B2 (ja) 2018-05-30
JP2017515765A (ja) 2017-06-15
EP3131827B1 (fr) 2022-03-16
WO2015157992A1 (fr) 2015-10-22
AR100130A1 (es) 2016-09-14
CN112078958A (zh) 2020-12-15

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