WO2024108538A1 - Article en dose unitaire soluble dans l'eau - Google Patents

Article en dose unitaire soluble dans l'eau Download PDF

Info

Publication number
WO2024108538A1
WO2024108538A1 PCT/CN2022/134305 CN2022134305W WO2024108538A1 WO 2024108538 A1 WO2024108538 A1 WO 2024108538A1 CN 2022134305 W CN2022134305 W CN 2022134305W WO 2024108538 A1 WO2024108538 A1 WO 2024108538A1
Authority
WO
WIPO (PCT)
Prior art keywords
compartment
water
unit dose
compartments
dose article
Prior art date
Application number
PCT/CN2022/134305
Other languages
English (en)
Inventor
Qiuyang HE
Yanjie WENG
Ming Tang
Original Assignee
The Procter & Gamble Company
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 The Procter & Gamble Company filed Critical The Procter & Gamble Company
Priority to PCT/CN2022/134305 priority Critical patent/WO2024108538A1/fr
Priority to CN202311503711.6A priority patent/CN118085976A/zh
Publication of WO2024108538A1 publication Critical patent/WO2024108538A1/fr

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/04—Detergent materials or soaps characterised by their shape or physical properties combined with or containing other objects
    • C11D17/041—Compositions releasably affixed on a substrate or incorporated into a dispensing means
    • C11D17/042—Water soluble or water disintegrable containers or substrates containing cleaning compositions or additives for cleaning compositions
    • C11D17/045—Multi-compartment

Definitions

  • the present invention relates to water-soluble unit dose articles.
  • the water-soluble unit dose article comprises the water-soluble film shaped such that the unit dose article comprises at least one internal compartment surrounded by the water-soluble film.
  • Preferred film materials are preferably polymeric materials.
  • the film material can, for example, be obtained by casting, blow-moulding, extrusion or blown extrusion of the polymeric material, as known in the art.
  • Water-soluble unit dose articles may comprise one or more compartments for containing same or different substrate treatment compositions (e.g. laundry detergent compositions) .
  • the compartments may be made in various shapes. The selection of shapes usually depends on aesthetics preferences. However, some shapes which are desirable for consumers may lead to challenges in rupture time of unit dose articles. In other words, some shapes may result in premature rupture (i.e. less rupture time) . Particularly, film stress may undesirably, unevenly increase in some shapes, resulting in high risk of rupture at the regions having increased film stress. Therefore, it is desired to provide water-soluble unit dose articles with an improved rupture time.
  • a water-soluble unit dose article with an optimized shape of compartment can provide an improved rupture time.
  • the water-soluble unit dose article with an optimized shape of compartment can be produced by a mold with an optimized shape of recesses.
  • the present invention in one aspect relates to a water-soluble unit dose article for treatment of a substrate, wherein the water-soluble unit dose article comprises a first compartment and a second compartment and wherein the first compartment contains a first substrate treatment composition and the second compartment contains a second substrate treatment composition, wherein at least one of said first compartment and said second compartment has a Minimum Compartment Length-Depth-Ratio (CLDR) of at least 0.9.
  • CLDR Minimum Compartment Length-Depth-Ratio
  • the present invention relates to an apparatus comprising: a thermoforming mold having a forming surface; a plurality of spaced apart recesses in said forming surface, wherein each said recess comprises a vacuum orifice and each vacuum orifice is in fluid communication with a vacuum source; and a continuous land area surrounding said recesses, wherein at least one of said recess has a Minimum Recess Length-Depth-Ratio (RLDR) of at least 0.85.
  • RLDR Minimum Recess Length-Depth-Ratio
  • FIG. 1 shows an exemplary unit dose article according to the present disclosure in which the shape of compartments is optimized.
  • FIG. 2 shows an illustrative diagram of the shape parametric test for unit dose articles.
  • 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” .
  • 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.
  • substrate means a substance which need to be treated, e.g., to be cleaned.
  • substrate may include a hard surface and fabrics.
  • substrate treatment composition means a composition for treating substrates. Such compositions may be in any form suitable for treating substrates, including particles, pourable liquid, gel, cream, and combinations thereof.
  • substrate treatment compositions contained in different compartments of unit dose articles may be the same or different.
  • laundry detergent composition means a composition for cleaning soiled materials, including fabrics. Such compositions may be used as a pre-laundering treatment, a post-laundering treatment, or may be added during the rinse or wash cycle of the laundering operation.
  • liquid laundry detergent composition herein refers to compositions that are in a form selected from the group consisting of pourable liquid, gel, cream, and combinations thereof.
  • unit dose laundry detergent composition herein refers to a water-soluble pouch containing a certain volume of liquid wrapped with a water-soluble film.
  • side-by-side manner means the first compartment, the second compartment and optionally third or subsequent compartments are arranged next to each other on a sealing plane.
  • the terms “superposed manner” means the second compartment and optionally third or subsequent compartments are superimposed on the first compartment.
  • the third compartment may be superimposed on the second compartment which is in turn superimposed on the first compartment in a sandwich configuration.
  • the second and third and optionally subsequent compartments may all be superimposed on the first compartment.
  • alkyl means a hydrocarbyl moiety which is branched or unbranched, substituted or unsubstituted. Included in the term “alkyl” is the alkyl portion of acyl groups.
  • washing solution refers to the typical amount of aqueous solution used for one cycle of laundry washing, preferably from 1 L to 50 L, alternatively from 1 L to 20 L for hand washing and from 10 L to 50 L for machine washing.
  • oiled fabric is used non-specifically and may refer to any type of natural or artificial fibers, including natural, artificial, and synthetic fibers, such as, but not limited to, cotton, linen, wool, polyester, nylon, silk, acrylic, and the like, as well as various blends and combinations.
  • the present invention discloses a water-soluble unit dose article comprising a water-soluble film and a substrate treatment composition. Particularly, the substrate treatment composition is wrapped with the water-soluble film.
  • the water-soluble film and the substrate treatment composition are described in more detail below.
  • the water-soluble unit dose article comprises the water-soluble film shaped such that the unit-dose article comprises at least one internal compartment surrounded by the water-soluble film.
  • the unit dose article may comprise a first water-soluble film and a second water-soluble film sealed to one another such to define the internal compartment.
  • the water-soluble unit dose article is constructed such that the substrate treatment composition does not leak out of the compartment during storage. However, upon addition of the water-soluble unit dose article to water, the water-soluble film dissolves and releases the contents of the internal compartment into the wash liquor.
  • the compartment should be understood as meaning a closed internal space within the unit dose article, which holds the detergent composition.
  • a first water-soluble film may be shaped to comprise an open compartment into which the detergent composition is added.
  • a second water-soluble film is then laid over the first film in such an orientation as to close the opening of the compartment. The first and second films are then sealed together along a seal region.
  • the water-soluble unit dose article may comprise a first compartment and a second compartment and wherein the first compartment contains a first substrate treatment composition and the second compartment contains a second substrate treatment composition, wherein at least one of the first compartment and the second compartment has a Minimum CLDR of at least 0.9, and/or at least one of the first compartment and the second compartment has an Average Compartment Length-Depth-Ratio (CLDR) of at least 1.2.
  • CLDR Average Compartment Length-Depth-Ratio
  • At least one of the first compartment and the second compartment has an Average CLDR of from 1.2 to 3, preferably from 1.25 to 2.5, more preferably from 1.3 to 2, most preferably from 1.3 to 1.8, e.g., 1.25, 1.3, 1.35, 1.4, 1.5, 1.6, 1.7, 1.8 and any ranges therebetween.
  • both of the first compartment and the second compartment has an Average CLDR of from 1.2 to 3, preferably from 1.25 to 2.5, more preferably from 1.3 to 2, most preferably from 1.3 to 1.8, e.g., 1.25, 1.3, 1.35, 1.4, 1.5, 1.6, 1.7, 1.8 and any ranges therebetween.
  • the Average CLDR defines the overall degree of convex for the compartment. Particularly, the Average CLDR is as measured by the Test 1 hereinafter.
  • At least one of the first compartment and the second compartment has a Minimum CLDR of from 0.9 to 2, preferably from 0.95 to 1.8, more preferably from 1 to 1.6, most preferably from 1.05 to 1.5, e.g., 0.95, 1, 1.05, 1.1, 1.15, 1.2, 1.3, 1.4, 1.5 or any ranges therebetween.
  • both of the first compartment and the second compartment has a Minimum CLDR of from 0.9 to 2, preferably from 0.95 to 1.8, more preferably from 1 to 1.6, most preferably from 1.05 to 1.5, e.g., 0.95, 1, 1.05, 1.1, 1.15, 1.2, 1.3, 1.4, 1.5 or any ranges therebetween.
  • the Minimum CLDR defines the highest degree of convex for the compartment. Particularly, the Minimum CLDR is as measured by the Test 1 hereinafter.
  • the first compartment and the second compartment are arranged in a side-by-side manner on a sealing plane and individually contain a substrate treatment composition.
  • the water-soluble unit dose article comprises a plurality of compartments in which the number of the plurality of compartments is from 2 to 10, preferably from 2 to 7, more preferably from 2 to 5, e.g. 2, 3, 4, 5, 6, 7, 8, 9, 10 and any ranges therebetween, and the plurality of compartments are arranged in a side-by-side manner on a sealing plane and individually contain a substrate treatment composition.
  • the unit dose article is formed from two sheets of water-soluble film, the two sheets of film being sealed together forming a sealing web lying on a sealing plane,
  • the first compartment and the second compartment are arranged in a superposed manner on a sealing plane and individually contain a substrate treatment composition.
  • the water-soluble unit dose article comprises a plurality of compartments in which the number of the plurality of compartments is from 2 to 10, preferably from 2 to 7, more preferably from 3 to 5, and the plurality of compartments are arranged in a superposed manner on a sealing plane and individually contain a substrate treatment composition.
  • the water-soluble unit dose article further comprises a third compartment and the total number of the compartments is from 3 to 5, wherein said first and third compartments are arranged in a side-by-side manner and said second compartment is arranged in a superposed manner relative to said first and third compartments on a sealing plane, wherein the compartments individually contain a substrate treatment composition, and wherein said first and third compartments have a Minimum CLDR of from 0.9 to 2, preferably from 0.95 to 1.8, more preferably from 1 to 1.6, most preferably from 1.05 to 1.5 and an Average CLDR of from 1.2 to 3, preferably from 1.25 to 2.5, more preferably from 1.3 to 2, most preferably from 1.3 to 1.8.
  • the unit dose article will comprise at least three films, i.e. top, middle and bottom.
  • a first film may be shaped to comprise an open compartment into which the substrate composition is added.
  • a second film is then laid over the first film in such an orientation as to close the opening of the compartment.
  • the first and second films are then sealed together along a seal region.
  • a third film may be shaped to comprise another open compartment into which the substrate composition is added.
  • the third film is sealed together with the sealed first and second films to provide a superposed unit dose article.
  • each of the compartments in the water-soluble dose articles has an Average CLDR of from 1.2 to 3, preferably from 1.25 to 2.5, more preferably from 1.3 to 2, most preferably from 1.3 to 1.8, and/or each of the plurality of compartments has a Minimum CLDR of from 0.9 to 2, preferably from 0.95 to 1.8, more preferably from 1 to 1.6, most preferably from 1.05 to 1.5.
  • each of the compartments in the water-soluble dose articles has a footprint on the sealing plane in which the footprint is bean-shape, lightening-shaped, wave-shaped, leaf-shaped, crescent-shaped, drop-shaped or Yin-and-Yang-shaped.
  • the substrate treatment composition contained in the water-soluble unit dose article is between 10g and 22g, preferably between 12g and 20g of a laundry detergent.
  • the water-soluble unit dose article comprises preferably consists of between 10ml and 20ml, preferably between 12ml and 18ml of a liquid laundry detergent.
  • the substrate treatment composition contained in each of the compartments is between 0.5 ml and 15ml, preferably between 1 ml and 10ml, more preferably between 1.5ml and 6ml.
  • each of the compartments in the water-soluble dose articles has a height of between 2 mm and 40 mm, preferably between 3 mm and 30 mm, more preferably between 5 mm and 20 mm.
  • the term of “height” of compartments as used herein refers to the maximum distance from the bottom to the top of compartments in the direction which is perpendicular to the sealing plane.
  • the outer contouring seal area includes or preferably consists of a flange area.
  • a flange area is arranged around the perimeter of the water-soluble multicompartment unit dose article, and the flange comprises sealed film from two, three, or more water-soluble films. In other words, the flange area protrudes out from the water-soluble unit dose article and comprises sealed film.
  • the water-soluble multicompartment unit dose article excluding a flange has a length and a width wherein each of the length and width are independently smaller than 50mm.
  • the water-soluble unit dose article preferably comprises a flange in which the flange has a width of between 1mm and 10 mm, preferable between 4mm and 8mm.
  • average sealing width between the compartments in the water-soluble dose articles is in the range of 1.0 mm to 2.5 mm, preferably between 1.2 mm and 2.2 mm, more preferably between 1.4 mm and 2.0 mm, e.g. 1.4 mm, 1.6 mm, 1.8 mm, 2.0 mm or any ranges therebetween.
  • sealing width refers to the width of inter-compartment sealing area between compartments which serves to separate the compartments from one another.
  • each of the footprints of the compartments in the water-soluble dose articles has Minimum Curvature of at least 0.5 mm, preferably between 0.5 mm and 5 mm, preferably between 0.7 mm and 3 mm, more preferably between 1.05 mm and 2 mm, e.g., 1.05 mm, 1.1 mm, 1.15 mm, 1.2 mm, 1.3 mm, 1.5 mm, 1.7 mm, 2 mm or any ranges therebetween.
  • the Minimum Curvature is as measured by the Test 1 hereinafter.
  • the unit dose article comprises at least two compartments, one of the compartments may be smaller than the other compartment.
  • the unit dose article comprises at least three compartments, two of the compartments may be smaller than the third compartment, and preferably the smaller compartments are superposed on the larger compartment.
  • the superposed compartments preferably are orientated side-by-side.
  • the detergent composition according to the present invention may be comprised in at least one of the compartments. It may for example be comprised in just one compartment, or may be comprised in two compartments, or even in three compartments.
  • Each compartment may comprise the same or different compositions.
  • the different compositions could all be in the same form, or they may be in different forms.
  • the water-soluble unit dose article may comprise at least two internal compartments, wherein the liquid laundry detergent composition is comprised in at least one of the compartments, preferably wherein the unit dose article comprises at least three compartments, wherein the detergent composition is comprised in at least one of the compartments.
  • the present invention relates to an apparatus for producing water-soluble unit dose articles, comprising a thermoforming mold having a forming surface; a plurality of spaced apart recesses in said forming surface, wherein each said recess comprises a vacuum orifice and each vacuum orifice is in fluid communication with a vacuum source; and a continuous land area surrounding said recesses.
  • At least one of said recess has a Minimum Recess Length-Depth-Ratio (RLDR) of at least 0.85. More particularly, each said recess has a Minimum Recess Length-Depth-Ratio (RLDR) of at least 0.85.
  • each said recess has a Minimum RLDR of from 0.85 to 2, preferably from 0.9 to 1.8, more preferably from 0.95 to 1.6, most preferably from 1 to 1.5, e.g., 0.95, 1, 1.05, 1.1, 1.15, 1.2, 1.3, 1.4, 1.5 or any ranges therebetween.
  • each said recess has an Average Recess Length-Depth-Ratio (RLDR) of from 1.1 to 3, preferably from 1.15 to 2.5, more preferably from 1.2 to 2, most preferably from 1.25 to 1.8, e.g., 1.25, 1.3, 1.35, 1.4, 1.45, 1.5, 1.55, 1.6, 1.7, 1.8 or any ranges therebetween.
  • RLDR Average Recess Length-Depth-Ratio
  • An apparatus for forming a water-soluble unit dose article can comprise a first film unwind roll and a thermoforming mold.
  • the thermoforming mold can be movable in the machine direction MD.
  • the first unwind roll can be upstream of the thermoforming molds.
  • a heater can be positioned downstream of the first film unwind roll.
  • the heater can be positioned between the first film unwind roll and the merging location.
  • the heater can be positioned between the first film unwind roll and the dosing device.
  • the heater can be a non-contact heater.
  • the heater can be an infrared heater.
  • the heater can be a heated roller.
  • a dosing device can be positioned above the forming surface of the thermoforming mold at a location at which vacuum orifices in the thermoforming mold are in fluid communication with a vacuum source.
  • the thermoforming mold can be slidably engaged with a vacuum manifold, the vacuum manifold being in fluid communication with each vacuum orifice.
  • the vacuum manifold can transmit vacuum from the vacuum source to the recess or recesses of the thermoforming mold.
  • a second film unwind roll can be operably positioned to supply a continuous web of second water soluble film above the forming surface downstream of the dosing device and at a merging location at which the vacuum orifices are in fluid communication with the vacuum source.
  • the apparatus can further comprise a cutting system downstream of the merging location.
  • the cutting system can comprise one or more longitudinal cutting knives downstream of the merging location.
  • the longitudinal cutting knives can have a longitudinal cutting direction aligned with the machine direction MD.
  • the longitudinal cutting knife or knives can be configured to cut the joined first water soluble film and second water soluble film in the machine direction between recesses adjacent to one another in the cross direction orthogonal to the machine direction MD.
  • the longitudinal cutting knife or knives can be rotary cutting knives.
  • the cutting system can comprise a plurality of transverse cutting knives downstream of the merging location.
  • the transverse cutting knives can have a transverse cutting direction in the cross direction which is orthogonal to the machine direction MD.
  • the transverse cutting knife or transverse cutting knives can be configured to cut the joined first water soluble film and second water soluble film in the cross direction between recesses adjacent to one another in the machine direction MD.
  • a continuous web of first water soluble film can be positioned on the first film unwind roll.
  • the first water soluble film can extend downstream of the merging location and can be positioned in facing relationship with the land area of the thermoforming mold downstream of the first film unwind roll.
  • a continuous web of second water soluble film can be positioned on the second film unwind roll.
  • the second water soluble film can extend downstream of the merging location and be positioned above the first water soluble film downstream of the merging location.
  • the thermoforming mold can be mounted on a rotatable drum or on a flat conveyance.
  • a flat conveyance can be a continuous belt or a series of linear motor vehicles that carry the mold in a straight line or horizontal line in the machine direction MD through the process of making water soluble unit dose pouches.
  • the flat conveyance can be a series of individual molds that can be positioned to abut one another to form the flat conveyance.
  • the individual molds can be joined to one another to provide for a continuous belt of molds.
  • the forming surfaces of the individual molds abutting one another can form the flat conveyance.
  • the forming surfaces of the molds may become spaced apart from one another.
  • the forming surfaces of the molds may remain abutting to one another as the molds are recirculated upstream if the molds are provided with structure that permits adjacent forming surfaces to move hingedly relative to one another.
  • a thermoforming mold can have a forming surface.
  • the forming surface is the surface to which the first water soluble film is contacted.
  • the forming surface can comprise a plurality of spaced apart recesses. Further, the forming surface can further comprise a continuous land area surrounding said recesses.
  • Each of the recesses can comprise a vacuum orifice or plurality of vacuum orifices. Each vacuum orifice can be in fluid communication with a vacuum source.
  • portions of the land area between the recesses have an average roughness Ra from 2.2 ⁇ m to 10 ⁇ m, preferably from 2.2 ⁇ m to 5 ⁇ m, more preferably from 2.5 ⁇ m to 3.5 ⁇ m.
  • portions of each of the recesses can have a roughness Sa from 2.2 ⁇ m to 10 ⁇ m, preferably from 2.2 ⁇ m to 5 ⁇ m, more preferably from 2.5 ⁇ m to 3.5 ⁇ m.
  • from about 50%to about 100%by area of each recess can have a roughness Sa from 2.2 ⁇ m to 10 ⁇ m, preferably from 2.2 ⁇ m to 5 ⁇ m, more preferably from 2.5 ⁇ m to 3.5 ⁇ m.
  • average roughness Ra is defined and measured according to ISO 21920-1: 2021.
  • roughness Sa is defined and measured according to ISO 21920-1: 2021.
  • each of the recesses in the thermoforming mold has a footprint on the forming surface in which the footprint is bean-shape, lightening-shaped, wave-shaped, leaf-shaped, crescent-shaped, drop-shaped or Yin-and-Yang-shaped.
  • the heater can be an infrared emitter, e.g. lamp, a hot plate or a combination thereof.
  • the heater can be an infrared lamp having a temperature of from about 200 °C to about 1000 °C.
  • the first film web can be heated to the desired temperature.
  • the distance between the heater and the first film web can be adjustable so that the temperature of the first film web can be controlled.
  • the temperature of the heater can be adjustable so that the temperature of the first film web can be controlled.
  • the first vacuum system can be used to apply a first negative gage pressure to the first porous face of the one or more recesses.
  • first negative gage pressure is applied to the first porous face of the one or more recesses, the first web can be at a first maximum temperature.
  • the first web is heated, it is possible that the temperature of the first web is non-uniform in the MD direction and the CD direction.
  • the portion of a web overlying the center of a recess may be at a temperature of 107 °C and the portion of the web out on the land area may have a temperature of about 25 °C.
  • the portion of a web overlying the center of a recess may be at a temperature of 103 °C and the portion of the web out on the land area may have a temperature of about 26 °C.
  • the portion of a web overlying the center of a cavity may be at a temperature of 108 °C and the portion of the web out on the land area may have a temperature of about 24 °C.
  • the first maximum temperature can be from about 5 °C to about 100 °C, from about 10 °C to about 100 °C, from about 20 °C to about 100 °C, or from about 60 to about 100 °C.
  • the first maximum temperature can be such that the deformation of the first film web is by thermoforming.
  • the first film web can be subjected to the first negative gage pressure for from about 1 s to about 10 s, from about 2 s to about 5 s or more preferably from about 1 s to about 3 s.
  • the first negative gage pressure can be from about 10 mbar to about 40 mbar below atmospheric pressure.
  • the first negative gage pressure can be from about 10 mbar to about 90 mbar below atmospheric pressure or from about 25 mbar to about 35 mbar below atmospheric pressure.
  • the first film web can have a temperature of from about 5 °C to about 100 °C, or even from about 10 °C to about 100 °C, or even from about 20 °C to about 100 °C, when the first negative gage pressure is applied to the first film web.
  • first negative gage pressure the faster the first film web will be deformed. Slower deformation can reduce the amount of micro-cracking in the formed first web.
  • first negative gage pressure may be greater, i.e. less vacuum, so that deformation of the first film web is slow, which can reduce micro-cracking in the formed first web.
  • a second negative gage pressure can be applied to the first porous face of the one or more recesses when the first film web is at a second maximum temperature.
  • the second negative gage pressure can be applied via the second vacuum system.
  • the second maximum temperature can be greater than the first maximum temperature. For clarity, gage pressure is zero referenced at atmospheric pressure.
  • the first negative gage pressure is 50 mbar below atmospheric pressure and the second negative gage pressure is 100 mbar below atmospheric pressure, it can be said that the second negative gage pressure is less than the first negative gage pressure.
  • a gage pressure of 50 mbar below atmospheric pressure is a negative gage pressure since it is pressure below atmospheric pressure. Since a negative gage pressure of 50 mbar below atmospheric pressure is below atmospheric pressure, it is a vacuum. So, in the circumstances in which the second negative gage pressure is less than or equal to the first negative gage pressure, it can be thought of as the first negative gage pressure being a first level of vacuum and the second negative gage pressure being a second level of vacuum, and the second level of vacuum is more forceful than the first level of vacuum.
  • the second maximum temperature can be from about 90 °C to about 150 °C.
  • the second negative gage pressure can be from about 150 mbar to about 400 mbar below atmospheric pressure, from about 180 mbar to about 260 mbar below atmospheric pressure, from about 180 mbar to about 230 mbar below atmospheric pressure, or from about 210 mbar to about 230 mbar below atmospheric pressure. That is, the second negative gage pressure pulls harder on the first film web than the first negative gage pressure.
  • the first negative gage pressure, second negative gage pressure, first maximum temperature, and second maximum temperature can be selected so that the compartment is well formed, the first web is not drawn into the openings in the first porous face to an unacceptable degree, and the amount of micro-cracking that occurs during deformation of the first web is limited to an acceptable degree.
  • the higher the second temperature the greater the second negative gage pressure can be since it can be easier to deform the first web at a higher temperature.
  • a combination of vacuum and/or other sources of pressure differential may be utilized in the deformation of the film webs disclosed herein.
  • the first pressure difference across the first film web can be provided by, by way of non-limiting example, fluid pressure from above the mold.
  • the fluid can be a heated fluid.
  • the fluid pressure that can act on the water soluble first film web can be provided by a gas such as air or a liquid.
  • nozzles can dispense fluid, by way of non-limiting example a gas, under pressure in a direction towards the first film web to conform the first film web to the first porous face of the one or more cavities.
  • the second web can be at a temperature of from about ambient temperature to about 120 °C.
  • the second web can be at a temperature of from about 10 °C to about 120 °C.
  • the second web can be at a temperature of from about 20 °C to about 120 °C.
  • the water-soluble film of the present invention is soluble or dispersible in water.
  • the water-soluble film preferably has a thickness of from 20 to 150 micron, preferably 35 to 125 micron, even more preferably 50 to 110 micron, most preferably about 76 micron.
  • the film has a water-solubility of at least 50%, preferably at least 75%or even at least 95%, as measured by the method set out here after using a glass-filter with a maximum pore size of 20 microns: 5 grams ⁇ 0.1 gram of film material is added in a pre-weighed 3L beaker and 2L ⁇ 5ml of distilled water is added. This is stirred vigorously on a magnetic stirrer, Labline model No. 1250 or equivalent and 5 cm magnetic stirrer, set at 600 rpm, for 30 minutes at 30°C. Then, the mixture is filtered through a folded qualitative sintered-glass filter with a pore size as defined above (max. 20 micron) . The water is dried off from the collected filtrate by any conventional method, and the weight of the remaining material is determined (which is the dissolved or dispersed fraction) . Then, the percentage solubility or dispersability can be calculated.
  • the water-soluble film material may be obtained by casting, blow-moulding, extrusion or blown extrusion of the polymeric material, as known in the art.
  • the water-soluble film comprises polyvinylalcohol.
  • the polyvinylalcohol may be present between 50%and 95%, preferably between 55%and 90%, more preferably between 60%and 80%by weight of the water soluble film.
  • the polyvinylalcohol preferably comprises polyvinyl alcohol homopolymer, polyvinylalcohol copolymer, or a mixture thereof.
  • the water-soluble film comprises a blend of polyvinylalcohol homopolymers and/or anionic polyvinylalcohol copolymers, preferably wherein the polyvinylalcohol copolymers are selected from sulphonated and carboxylated anionic polyvinylalcohol copolymers especially carboxylated anionic polyvinylalcohol copolymers, most preferably the water-soluble film comprises a blend of a polyvinylalcohol homopolymer and a carboxylated anionic polyvinylalcohol copolymer, or a blend of polyvinylalcohol homopolymers.
  • the polyvinylalcohol comprises an anionic polyvinyl alcohol copolymer, most preferably a carboxylated anionic polyvinylalcohol copolymer.
  • the polyvinylalcohol in the water soluble film is a blend of a polyvinylalcohol homopolymer and a carboxylated anionic polyvinylalcohol copolymer, the homopolymer and the anionic copolymer are present in a relative weight ratio of 90/10 to 10/90, preferably 80/20 to 20/80, more preferably 70/30 to 50/50.
  • the term “homopolymer” generally includes polymers having a single type of monomeric repeating unit (e.g., a polymeric chain comprising or consisting of a single monomeric repeating unit) .
  • the term “homopolymer” further includes copolymers having a distribution of vinyl alcohol monomer units and optionally vinyl acetate monomer units, depending on the degree of hydrolysis (e.g., a polymeric chain comprising or consisting of vinyl alcohol and vinyl acetate monomer units) .
  • a polyvinylalcohol homopolymer can include only vinyl alcohol units.
  • copolymer generally includes polymers having two or more types of monomeric repeating units (e.g., a polymeric chain comprising or consisting of two or more different monomeric repeating units, whether as random copolymers, block copolymers, etc. ) .
  • copolymer (or “polyvinylalcohol copolymer” ) further includes copolymers having a distribution of vinyl alcohol monomer units and vinyl acetate monomer units, depending on the degree of hydrolysis, as well as at least one other type of monomeric repeating unit (e.g., a ter- (or higher) polymeric chain comprising or consisting of vinyl alcohol monomer units, vinyl acetate monomer units, and one or more other monomer units, for example anionic monomer units) .
  • monomeric repeating unit e.g., a ter- (or higher) polymeric chain comprising or consisting of vinyl alcohol monomer units, vinyl acetate monomer units, and one or more other monomer units, for example anionic monomer units
  • a polyvinylalcohol copolymer can include a copolymer having vinyl alcohol units and one or more other monomer units, but no vinyl acetate units.
  • anionic copolymer includes copolymers having an anionic monomer unit comprising an anionic moiety.
  • anionic monomer units which can be used for the anionic polyvinyl alcohol co-polymer include the vinyl polymerization units corresponding to monocarboxylic acid vinyl monomers, their esters and anhydrides, dicarboxylic monomers having a polymerizable double bond, their esters and anhydrides, vinyl sulfonic acid monomers, and alkali metal salts of any of the foregoing.
  • suitable anionic monomer units include the vinyl polymerization units corresponding to vinyl anionic monomers including vinyl acetic acid, maleic acid, monoalkyl maleate, dialkyl maleate, monomethyl maleate, dimethyl maleate, maleic anyhydride, fumaric acid, monoalkyl fumarate, dialkyl fumarate, monomethyl fumarate, dimethyl fumarate, fumaric anyhydride, itaconic acid, monomethyl itaconate, dimethyl itaconate, itaconic anhydride, vinyl sulfonic acid, allyl sulfonic acid, ethylene sulfonic acid, 2-acrylamido-1-methylpropanesulfonic acid, 2-acrylamido-2-methylpropanesulfonic acid, 2-methylacrylamido-2-methylpropanesulfonic acid, 2-sufoethyl acrylate, alkali metal salts of the foregoing (e.g., sodium, potassium, or other alkali metal salts) , esters of the for
  • the anionic monomer may be one or more acrylamido methylpropanesulfonic acids (e.g., 2-acrylamido-1-methylpropanesulfonic acid, 2-acrylamido-2-methylpropanesulfonic acid, 2-methylacrylamido-2-methylpropanesulfonic acid) , alkali metal salts thereof (e.g., sodium salts) , and combinations thereof.
  • the anionic moiety of the first anionic monomer unit is selected from a sulphonate, a carboxylate, or a mixture thereof, more preferably a carboxylate, most preferably an acrylate, a methacrylate, a maleate, or a mixture thereof.
  • the anionic monomer unit is present in the anionic polyvinyl alcohol copolymer in an average amount in a range of between 1 mol. %and 10 mol. %, preferably between 2 mol. %and 5 mol. %.
  • the polyvinyl alcohol, and/or in case of polyvinylalcohol blends the individual polyvinylalcohol polymers have an average viscosity ( ⁇ 1) in a range of between 4 mPa. s and 30 mPa. s, preferably between 10mPa. s and 25 mPa. s, measured as a 4%polyvinyl alcohol copolymer solution in demineralized water at 20 degrees C.
  • the viscosity of a polyvinyl alcohol polymer is determined by measuring a freshly made solution using a Brookfield LV type viscometer with UL adapter as described in British Standard EN ISO 15023-2: 2006 Annex E Brookfield Test method. It is international practice to state the viscosity of 4%aqueous polyvinyl alcohol solutions at 20 °C. It is well known in the art that the viscosity of an aqueous water-soluble polymer solution (polyvinylalcohol or otherwise) is correlated with the weight-average molecular weight of the same polymer, and often the viscosity is used as a proxy for weight-average molecular weight.
  • the weight-average molecular weight of the polyvinylalcohol can be in a range of 30,000 to 175,000, or 30,000 to 100,000, or 55,000 to 80,000.
  • the polyvinyl alcohol, and/or in case of polyvinylalcohol blends the individual polyvinylalcohol polymers have an average degree of hydrolysis in a range of between 75%and 99%, preferably between 80%and 95%, most preferably between 85%and 95%.
  • a suitable test method to measure the degree of hydrolysis is as according to standard method JIS K6726.
  • the water-soluble film comprises a non-aqueous plasticizer.
  • the non-aqueous plasticizer is selected from polyols, sugar alcohols, and mixtures thereof.
  • Suitable polyols include polyols selected from the group consisting of glycerol, diglycerin, ethylene glycol, diethylene glycol, triethyleneglycol, tetraethylene glycol, polyethylene glycols up to 400 molecular weight, neopentyl glycol, 1, 2-propylene glycol, 1, 3-propanediol, dipropylene glycol, polypropylene glycol, 2-methyl-1, 3-propanediol, trimethylolpropane and polyether polyols, or a mixture thereof.
  • Suitable sugar alcohols include sugar alcohols selected from the group consisting of isomalt, maltitol, sorbitol, xylitol, erythritol, adonitol, dulcitol, pentaerythritol and mannitol, or a mixture thereof.
  • the non-aqueous plasticizer is selected from glycerol, 1, 2-propanediol, dipropylene glycol, 2-methyl-1, 3-propanediol, trimethylolpropane, triethyleneglycol, polyethyleneglycol, sorbitol, or a mixture thereof, most preferably selected from glycerol, sorbitol, trimethylolpropane, dipropylene glycol, and mixtures thereof.
  • One particularly suitable plasticizer system includes a blend of glycerol, sorbitol and trimethylol propane.
  • Another particularly suitable plasticizer system includes a blend of glycerin, dipropylene glycol, and sorbitol.
  • the film comprises between 5%and 50%, preferably between 10%and 40%, more preferably between 20%and 30%by weight of the film of the non-aqueous plasticizer.
  • the water-soluble film comprises a surfactant.
  • the water-soluble film comprises a surfactant in an amount between 0.1%and 2.5%, preferably between 1%and 2%by weight of the water-soluble film.
  • Suitable surfactants can include the nonionic, cationic, anionic and zwitterionic classes.
  • Suitable surfactants include, but are not limited to, polyoxyethylenated polyoxypropylene glycols, alcohol ethoxylates, alkylphenol ethoxylates, tertiary acetylenic glycols and alkanolamides (nonionics) , polyoxyethylenated amines, quaternary ammonium salts and quaternized polyoxyethylenated amines (cationics) , and amine oxides, N-alkylbetaines and sulfobetaines (zwitterionics) .
  • Suitable surfactants include dioctyl sodium sulfosuccinate, lactylated fatty acid esters of glycerol and propylene glycol, lactylic esters of fatty acids, sodium alkyl sulfates, polysorbate 20, polysorbate 60, polysorbate 65, polysorbate 80, lecithin, acetylated fatty acid esters of glycerol and propylene glycol, and acetylated esters of fatty acids, and combinations thereof.
  • the water-soluble film according to the invention comprises lubricants /release agents.
  • Suitable lubricants/release agents can include, but are not limited to, fatty acids and their salts, fatty alcohols, fatty esters, fatty amines, fatty amine acetates and fatty amides.
  • Preferred lubricants/release agents are fatty acids, fatty acid salts, and fatty amine acetates.
  • the amount of lubricant/release agent in the water-soluble film is in a range of from 0.02%to 1.5%, preferably from 0.1%to 1%by weight of the water-soluble film.
  • the water-soluble film comprises fillers, extenders, antiblocking agents, detackifying agents or a mixture thereof.
  • suitable fillers, extenders, antiblocking agents, detackifying agents or a mixture thereof include, but are not limited to, starches, modified starches, crosslinked polyvinylpyrrolidone, crosslinked cellulose, microcrystalline cellulose, silica, metallic oxides, calcium carbonate, talc and mica.
  • Preferred materials are starches, modified starches and silica.
  • the amount of filler, extender, antiblocking agent, detackifying agent or mixture thereof in the water-soluble film is in a range of from 0.1%to 25%, preferably from 1%to 10%, more preferably from 2%to 8%, most preferably from 3%to 5%by weight of the water-soluble film.
  • one preferred range for a suitable filler, extender, antiblocking agent, detackifying agent or mixture thereof is from 0.1%to 1%, preferably 4%, more preferably 6%, even more preferably from 1%to 4%, most preferably from 1%to 2.5%, by weight of the water-soluble film.
  • the water-soluble film according to the invention has a residual moisture content of at least 4%, more preferably in a range of from 4%to 15%, even more preferably of from 5%to 10%by weight of the water-soluble film as measured by Karl Fischer titration.
  • Preferred films exhibit good dissolution in cold water, meaning unheated distilled water.
  • Preferably such films exhibit good dissolution at temperatures of 24°C, even more preferably at 10°C.
  • good dissolution it is meant that the film exhibits water-solubility of at least 50%, preferably at least 75%or even at least 95%, as measured by the method set out here after using a glass-filter with a maximum pore size of 20 microns, described above.
  • Preferred films include those supplied by Monosol under the trade references M8630, M8900, M8779, M8310.
  • the film may be opaque, transparent or translucent.
  • the film may comprise a printed area.
  • the area of print may be achieved using standard techniques, such as flexographic printing or inkjet printing.
  • the ink used in the printed area comprises between 0ppm and 20ppm, preferably between 0ppm and 15ppm, more preferably between 0ppm and 10ppm, even more preferably between 0ppm and 5ppm, even more preferably between 0ppm and 1ppm, even more preferably between 0ppb and 100ppb, most preferably 0ppb dioxane.
  • Those skilled in the art will be aware of known methods and techniques to determine the dioxane level within the ink formulations.
  • the film may comprise an aversive agent, for example a bittering agent.
  • Suitable bittering agents include, but are not limited to, naringin, sucrose octaacetate, quinine hydrochloride, denatonium benzoate, or mixtures thereof.
  • Any suitable level of aversive agent may be used in the film. Suitable levels include, but are not limited to, 1 to 5000ppm, or even 100 to 2500ppm, or even 250 to 2000rpm.
  • the water-soluble film or water-soluble unit dose article or both are coated in a lubricating agent, preferably, wherein the lubricating agent is selected from talc, zinc oxide, silicas, siloxanes, zeolites, silicic acid, alumina, sodium sulphate, potassium sulphate, calcium carbonate, magnesium carbonate, sodium citrate, sodium tripolyphosphate, potassium citrate, potassium tripolyphosphate, calcium stearate, zinc stearate, magnesium stearate, starch, modified starches, clay, kaolin, gypsum, cyclodextrins or mixtures thereof.
  • the lubricating agent is selected from talc, zinc oxide, silicas, siloxanes, zeolites, silicic acid, alumina, sodium sulphate, potassium sulphate, calcium carbonate, magnesium carbonate, sodium citrate, sodium tripolyphosphate, potassium citrate, potassium tripolyphosphate, calcium stearate, zinc stea
  • the water-soluble film and each individual component thereof, independently comprises between 0ppm and 20ppm, preferably between 0ppm and 15ppm, more preferably between 0ppm and 10ppm, even more preferably between 0ppm and 5ppm, even more preferably between 0ppm and 1ppm, even more preferably between 0ppb and 100ppb, most preferably 0ppb dioxane.
  • 0ppm and 20ppm preferably between 0ppm and 15ppm, more preferably between 0ppm and 10ppm, even more preferably between 0ppm and 5ppm, even more preferably between 0ppm and 1ppm, even more preferably between 0ppb and 100ppb, most preferably 0ppb dioxane.
  • the water-soluble unit dose article comprises a substrate treatment composition.
  • the substrate treatment composition may be a liquid laundry detergent composition which refers to any laundry detergent composition comprising a liquid capable of wetting and treating a fabric, and includes, but is not limited to, liquids, gels, pastes, dispersions and the like.
  • the liquid detergent composition can be used in a fabric hand wash operation or may be used in an automatic machine fabric wash operation.
  • the substrate treatment composition may comprise from 0.1%to 70%, preferably from 1%to 60%, more preferably from 5%to 50%, most preferably from 10%to 45%, by weight of the composition, of a surfactant, and from 1%to 50%, preferably from 4%to 40%, more preferably from 7%to 35%, most preferably from 10%to 30%, e.g. 10%, 15%, 20%, 25%, 30%or any ranges therebetween, by weight of the composition, of a non-aqueous solvent.
  • the surfactant is selected from the group consisting of C 6 -C 20 alkyldimethyl amine oxides, C 6-20 amido alkyl dimethyl amine oxides, C 6 -C 20 linear alkylbenzene sulfonates (LAS) , C 6 -C 20 alkyl sulfates (AS) , C 6 -C 20 alkyl alkoxy sulfates (AAS) , C 6 -C 20 methyl ester sulfonates (MES) , C 6 -C 20 alkyl ether carboxylates (AEC) , fatty acids, alkyl alkoxylated alcohols, alkyl alkoxylated phenols, alkyl polysaccharides, alkyl polyglycosides, methyl ester ethoxylates, polyhydroxy fatty acid amides, alkoxylated fatty acid esters, sucrose esters, sorbitan esters and alkoxylated derivatives of sorb
  • the surfactant comprises a C 6 -C 20 alkyldimethyl amine oxide, a C 6 -C 20 LAS, a C 6 -C 20 alkoxylated alcohol having a weight average degree of alkoxylation ranging from 1 to 20 preferably having a weight average degree of ethoxylation ranging from 1 to 20, a C 6 -C 20 alkyl alkoxy sulfate (AAS) preferably a C 6 -C 20 alkyl ethoxylated sulfate having a weight average degree of ethoxylation ranging from 1 to 5, a fatty acid, and any combinations thereof, and the non-aqueous solvent is selected from the group consisting of ethanol, propanol, isopropanol, terpineol, ethylene glycol, 1, 2-propanediol, 1, 3-propanediol, butanediol, glycerine, butanetriol, pentaerythrito
  • the liquid laundry detergent composition comprises from 7 to 18%, preferably from 8 to 15%, e.g. 8%, 9%, 10%, 11%, 12%, 13%, 14%, 15%or any ranges therebetween, by weight of the liquid laundry detergent composition of water.
  • the liquid laundry detergent composition may comprise a cleaning or care polymer, preferably wherein the cleaning or care polymer is selected from an ethoxylated or mixed ethoxylated/propoxylated polyethyleneimine, alkoxylated polyalkyl phenol, an amphiphilic graft copolymer, an optionally anionically modified polyester terephthalate, an optionally cationically modified hydroxyethylcellulose, a carboxymethylcellulose or a mixture thereof.
  • the cleaning or care polymer is selected from an ethoxylated or mixed ethoxylated/propoxylated polyethyleneimine, alkoxylated polyalkyl phenol, an amphiphilic graft copolymer, an optionally anionically modified polyester terephthalate, an optionally cationically modified hydroxyethylcellulose, a carboxymethylcellulose or a mixture thereof.
  • the water-soluble unit dose article may comprise an adjunct ingredient selected from hueing dyes, polymers, builders, dye transfer inhibiting agents, dispersants, enzymes, enzyme stabilizers, catalytic materials, bleach, bleach activators, polymeric dispersing agents, anti-redeposition agents, suds suppressors, aesthetic dyes, opacifiers, perfumes, perfume delivery systems, structurants, hydrotropes, processing aids, pigments and mixtures thereof.
  • an adjunct ingredient selected from hueing dyes, polymers, builders, dye transfer inhibiting agents, dispersants, enzymes, enzyme stabilizers, catalytic materials, bleach, bleach activators, polymeric dispersing agents, anti-redeposition agents, suds suppressors, aesthetic dyes, opacifiers, perfumes, perfume delivery systems, structurants, hydrotropes, processing aids, pigments and mixtures thereof.
  • the laundry detergent composition has a pH between 6 and 10, between 6.5 and 8.9, or between 7 and 8, wherein the pH of the laundry detergent composition is measured as a 10%product concentration in demineralized water at 20°C.
  • the liquid laundry detergent composition is Newtonian.
  • the liquid laundry detergent composition is non-Newtonian.
  • a non-Newtonian liquid has properties that differ from those of a Newtonian liquid, more specifically, the viscosity of non-Newtonian liquids is dependent on shear rate, while a Newtonian liquid has a constant viscosity independent of the applied shear rate.
  • the liquid laundry detergent composition may have a viscosity of at least 2Pa. s at a shear rate of 0.5s -1 as measured using a TA Rheometer AR2000 at 25°C, preferably wherein the liquid detergent composition has a viscosity of between 2Pa. s and 35Pa. s, preferably between 2.5Pa. s and 30Pa.
  • the liquid laundry detergent composition may be characterized by a high shear viscosity ranging from about 100 to about 900 mPa ⁇ s, preferably from about 150 to about 800 mPa ⁇ s, more preferably from about 200 to about 600 mPa ⁇ s, measured at a shear rate of about 1000 s -1 and at a temperature of about 20°C.
  • the fluid may be preferably a non-Newtonian fluid with shear-thinning properties, hence is further characterized by a low shear viscosity ranging from about 1000 mPa. s to about 10000 mPa. s, preferably from about 1500 mPa. s to about 7500 mPa. s, more preferably from about 2000 mPa. s to about 5000 mPa. s when measured at a shear rate of about 0.5 s -1 .
  • a further aspect of the present invention is a method of washing comprising the steps of adding the water-soluble unit dose article according to the present invention to sufficient water to dilute the liquid detergent composition by a factor of at least 300 fold to create a wash liquor and contacting items to be washed with said wash liquor.
  • a further aspect of the present invention is a packaged product comprising a recloseable container and at least one water-soluble unit dose article according to the present invention comprised therein.
  • the storage receptacle is a flexible, preferably resealable, bag, a rigid, preferably recloseable, tub or a mixture thereof, preferably, wherein the storage receptacle comprises a child resistant closure.
  • suitable child resistant closures Those skilled in the art will be aware of suitable child resistant closures.
  • the package may be made from any suitable material.
  • the container may be made from metallic materials, Aluminium, plastic materials, cardboard materials, laminates, cellulose pulp materals or a mixture thereof.
  • the package may be made from a plastic material, preferably a polyolefin material.
  • the package may be made from polypropylene, polystyrene, polyethylene, polyethylene terephthalate, PVC or a mixture thereof or more durable engineering plastics like Acrylonitrile Butadiene Styrene (ABS) , Polycarbonates, Polyamides and the like
  • ABS Acrylonitrile Butadiene Styrene
  • the material used to make the container may comprise other ingredients, such as colorants, preservatives, plasticisers, UV stabilizers, Oxygen, perfume and moisture barriers recycled materials and the like.
  • FIG. 1A and 1B show an exemplary unit dose article 1 according to the present disclosure comprising a first compartment 11, a second compartment 12 and a third compartment 13 which are all crescent-shaped.
  • the sealing plane 14 is the plane formed by the sealing of a first water-soluble film and a second water-soluble film.
  • the shape of compartments is optimized without significantly changing the overall shape (i.e., to maintain crescent-shaped) by optimizing the shape of molds.
  • the optimization comprises the modification of the shape parameters including Minimum RLDR, Average RLDR, Minimum CLDR, Average CLDR and Minimum curvature.
  • FIG. 2A and 2B show an illustrative diagram of shape parametric test.
  • a footprint of a recess 21 in a mold for producing an exemplary unit dose article comprising a crescent-shaped compartment according to the present disclosure is shown.
  • Test 1 Shape parametric test, a first end point 22 having a first minimum curvature radius and a second end point 23 having a second minimum curvature radius are identified. Then, a short path 25 (vs. a long path) on the contour of the footprint from the first end point 22 to the second end point 23 is determined. In the short path 25, four middle points which can evenly divide the shorter path into five equal parts are identified.
  • a cross-section 24 of the recess 21 which is perpendicular to the contour of the footprint is established.
  • a length 241 and a depth 242 of the cross-section 24 are measured in accordance with the Test 1.
  • Test 1 Shape parametric test
  • the 3D model of a recess in a mold for producing an unit dose article is imported.
  • a plane of the footprint of the recess in the forming surface of the mold is processed by the software.
  • a first end point having a first minimum curvature radius is identified and the first minimum curvature radius is assigned as the Minimum Curvature.
  • a second end point having a second minimum curvature radius is identified provided that the distance between the first and the second end points on the contour is at least 20%of the total length of the contour. If the point having a second minimum curvature radius does not meet the requirement as above, the point having a third minimum curvature radius which can meet the requirement is identified as the second end point.
  • a short path (vs. a long path) on the contour of the footprint from the first end point to the second end point is determined.
  • the short path four middle points which can evenly divide the shorter path into five equal parts are identified.
  • a cross-section of the recess which is perpendicular to the contour of the footprint is established.
  • the axis x is along the tangential direction of the contour at the middle point
  • the axis y is along the intersection line of the forming surface and the cross-section plane
  • the axis z is along the direction which is perpendicular to the axis y on the cross-section plane.
  • RLDR the length/the depth.
  • Minimum RLDR is the lowest value among the four RLDRs for four cross-sections
  • Average RLDR is the average value of the four RLDRs.
  • Minimum CLDR and Average CLDR are calculated as below:
  • #: 0.94 is an empirical value due to slight deformation of unit dose articles after demolding.
  • Laundry three-chamber side-by-side pouches (available in CN market, July 2022) was prepared using standard mixing techniques and equipment known to those skilled in the art. Particularly, the organic solvent level in the liquid detergent formulation is around 20 ⁇ 25%and the water level in the liquid detergent formulation is around 9 ⁇ 13%. Then, the liquid detergent composition ( ⁇ 10ml) was encapsulated into the three compartments of the unit dose as shown in Fig. 1.
  • the rupture time for unit dose articles before and after optimization were determined by using Chinese national standard for laundry detergent unit dose article. Before testing, the samples were balanced at (23 ⁇ 2) °C and relative humidity of (50 ⁇ 5) %for at least 24h.
  • Test procedure Measure 1000ml (23 ⁇ 1) °C water with a 1L measuring cylinder and pour it into a 1000ml beaker. Put the sample into a cage. Immerse into the water and fix it in the middle of the beaker. Start timing from the time when the sample contacts with water, record the film rupture time (in term of multi-compartment unit dose articles pods, rupture time for the first compartment is recorded) .

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Wrappers (AREA)

Abstract

La présente invention concerne des articles en dose unitaire solubles dans l'eau.
PCT/CN2022/134305 2022-11-25 2022-11-25 Article en dose unitaire soluble dans l'eau WO2024108538A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2022/134305 WO2024108538A1 (fr) 2022-11-25 2022-11-25 Article en dose unitaire soluble dans l'eau
CN202311503711.6A CN118085976A (zh) 2022-11-25 2023-11-13 水溶性单位剂量制品

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2022/134305 WO2024108538A1 (fr) 2022-11-25 2022-11-25 Article en dose unitaire soluble dans l'eau

Publications (1)

Publication Number Publication Date
WO2024108538A1 true WO2024108538A1 (fr) 2024-05-30

Family

ID=84901167

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/134305 WO2024108538A1 (fr) 2022-11-25 2022-11-25 Article en dose unitaire soluble dans l'eau

Country Status (2)

Country Link
CN (1) CN118085976A (fr)
WO (1) WO2024108538A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170349863A1 (en) * 2014-03-24 2017-12-07 The Procter & Gamble Company Laundry unit dose article
US20170349864A1 (en) * 2014-03-24 2017-12-07 The Procter & Gamble Company Laundry unit dose article
US10059912B2 (en) * 2013-06-19 2018-08-28 Conopco, Inc. Multi-compartment water-soluble capsules
US20200131457A1 (en) * 2018-10-30 2020-04-30 The Procter & Gamble Company Water-soluble multicompartment unit dose article

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10059912B2 (en) * 2013-06-19 2018-08-28 Conopco, Inc. Multi-compartment water-soluble capsules
US20170349863A1 (en) * 2014-03-24 2017-12-07 The Procter & Gamble Company Laundry unit dose article
US20170349864A1 (en) * 2014-03-24 2017-12-07 The Procter & Gamble Company Laundry unit dose article
US20200131457A1 (en) * 2018-10-30 2020-04-30 The Procter & Gamble Company Water-soluble multicompartment unit dose article

Also Published As

Publication number Publication date
CN118085976A (zh) 2024-05-28

Similar Documents

Publication Publication Date Title
US8276756B2 (en) Water-soluble film having improved dissolution and stress properties, and packets made therefrom
RU2693257C2 (ru) Способ изготовления водорастворимого мешочка
EP3279303B1 (fr) Article de dose unitaire soluble dans l'eau comprenant un tensioactif amphotère
US8309203B2 (en) Water-soluble substrate with resistance to dissolution prior to being immersed in water
JP2019506495A (ja) 深絞りプロファイルを熱成形するための水溶性フィルム及びそれを備える熱成形物品
WO2022062756A1 (fr) Article en dose unitaire soluble dans l'eau comprenant un tensioactif d'oxyde d'amine avec un solvant non aqueux dominant
WO2024108538A1 (fr) Article en dose unitaire soluble dans l'eau
CN220618854U (zh) 水溶性单位剂量制品
WO2024055289A1 (fr) Article en dose unitaire soluble dans l'eau comprenant une composition de détergent à lessive liquide qui contient du polyéthylène glycol
EP4339267A1 (fr) Article de dose unitaire hydrosoluble comprenant une composition de détergent à lessive liquide qui comprend du polyéthylène glycol
US20240158113A1 (en) Process of making water-soluble unit dose articles
EP4353808A1 (fr) Article de dose unitaire soluble dans l'eau à compartiments multiples
EP4353809A1 (fr) Article de dose unitaire soluble dans l'eau à compartiments multiples
EP3786275B1 (fr) Article de dose unitaire soluble dans l'eau
EP3279305B1 (fr) Article de dose unitaire soluble dans l'eau comprenant un diamine cyclique