EP1781770A1 - Composition detergente particulaire, et emballage associe - Google Patents

Composition detergente particulaire, et emballage associe

Info

Publication number
EP1781770A1
EP1781770A1 EP05772176A EP05772176A EP1781770A1 EP 1781770 A1 EP1781770 A1 EP 1781770A1 EP 05772176 A EP05772176 A EP 05772176A EP 05772176 A EP05772176 A EP 05772176A EP 1781770 A1 EP1781770 A1 EP 1781770A1
Authority
EP
European Patent Office
Prior art keywords
sachet
particulate
composition according
particulate fabric
scrubbing
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.)
Withdrawn
Application number
EP05772176A
Other languages
German (de)
English (en)
Inventor
Caroline S. Unilever R & D Port Sunlight CORDERY
Jane E. Unilever South Africa ORMOND (Pty) Ltd
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.)
Unilever PLC
Unilever NV
Original Assignee
Unilever PLC
Unilever NV
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 Unilever PLC, Unilever NV filed Critical Unilever PLC
Publication of EP1781770A1 publication Critical patent/EP1781770A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L25/00—Domestic cleaning devices not provided for in other groups of this subclass 
    • A47L25/08—Pads or the like for cleaning clothes
    • 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
    • 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
    • C11D17/06—Powder; Flakes; Free-flowing mixtures; Sheets

Definitions

  • a particulate detergent composition and packaging therefor.
  • the present invention relates to a particulate fabric treatment composition having a dynamic flow rate of at least 90 ml/s and packaging therefor.
  • the present invention provides a particulate fabric treatment composition having a dynamic flow rate of at least 90 ml/s, characterised in that the particulate detergent composition is contained in a water insoluble elongate tubular sachet comprising a scrubbing portion.
  • the elongate shape is important for a number of reasons.
  • an elongate dispenser is also easier to handle in dispensing and scrubbing than a more compact shape.
  • the dynamic flow rate should be at least 90 ml/s and the may be at least 100 ml/s. More preferably the dynamic flow rate is at least 110 ml/s.
  • the scrubbing portion may be located at or toward only one end of the sachet. Preferably the scrubbing portion is remote from any end having opening features or end which will form a dispensing opening. In such an embodiment, preferably opposite to an end having any opening features such as lateral slits or slots for easy opening.
  • the scrubbing means may be integral with the sachet and may comprise a surface effect which is applied e.g. moulded on to the surface of the sachet material.
  • the scrubbing means may be applied so that the whole thickness of the material is affected.
  • ribs may be applied by e.g. moulding, and these may be on the surface only or the entire thickness of the material may form the ribs.
  • the surface effect may be pre-applied to the sachet material, that is, applied to the sheet material which is used to formed the sachet, before the tube is formed.
  • the scrubbing means may be formed at a sealing stage, that is, when the appropriate end of the sachet is sealed. Sealing may be achieved using heated sealing bars, and these may be configured to provide upstanding ribs or * other such projections e.g. small finger like projections, domed like projections, etc.
  • the scrubbing means may be provided in addition to or as part of the seal. The whole of the seal may comprise the scrubbing portion.
  • the sachet may, once formed and filled with the particulate composition, have a flattened cross section so that effectively the sachet has two sides.
  • scrubbing portion extends to both sides in this way the user does not need to pay special attention to the orientation of the sachet, and further advantageously, the opposite side to that in use as a scrubbing tool, can form a gripping surface to stop slippage in use.
  • particle as used herein is intended to include powder, agglomerated or discrete particles, granules, or any other solid particles.
  • an elongate tubular body containing a particulate fabric treatment composition having a dynamic flow rate of at least 90 ml/s is advantageous in that it reduces the likelihood that the flow of the particulate composition from tubular container becomes blocked.
  • the particulate fabric treatment composition has a compressibility of less than 25%; further preferably less than 20% and even further preferably less than 17%.
  • the particulate composition has a compressibility of less than 15%. Reducing the compressibility of the composition is advantageous as this further improves flow properties of the composition within the tubular sachet during dispensing thereby reducing the likelihood of blockages.
  • Compressibility as used herein is measured by compressing a known volume of particulate composition by the application of a standard weight, at defined conditions of temperature and humidity after which the volume reduction is noted. The method used is described below.
  • the sachet needs to be sufficiently long to ensure good separation of the scrubbing portion and dispensing end.
  • the sachet needs to be wide enough to incorporate a decent size scrubbing portion.
  • the ratio of the (longitudinal) length of the sachet (before filling with the particulate composition) to the width of the sachet (again, before filling) is therefore preferably from 3:1 to 6:1. Most preferably, the ratio is 4:1 to 5.1. This enables a sachet which can be hand-held easily but which allows good separation of scrubbing portion and dispensing opening and which incorporates a fairly decent sized scrubbing portion.
  • the length of the sachet (measured before filling and along the longitudinal axis) may be 100mm -300mm, preferably 150 - 250mm and further preferably 170 -200mm. This provides good separation of an opening end and a scrubbing end.
  • the width of the sachet (measured before filling and perpendicular to the longitudinal axis) may be 20mm - 50mm, preferably 30-45mm. This provides a substantial scrubbing portion.
  • the length is 185mm and the width is 45mm, so that the ratio is approximately 4 : 1 and the dynamic flow ratio of the composition is at least 100 ml/s.
  • the sachet is preferably a three-seemed sachet with a lengthwise seam (5) formed as a sealed flat seam.
  • the sachet is preferably initially closed at each end by sealed transverse seam and an opening end may have a lateral incision (4) for opening.
  • the opening end may have incisions e.g. by means of ⁇ zig-zagged' edges to allow opening.
  • the lengthwise seam may be a fin or ⁇ lap f seal.
  • a lap seam is formed where two layers of film overlap, with the outermost face of the inner layer in contact with the innermost face of the outer layer. The two layers are then bonded together either by use of an adhesive or by the formation of a weld.
  • a weld requires the surface layers of the film to be made of a thermoplastic material (i.e. one which will melt when a high temperature is applied) .
  • a welded bond is formed by melting the surface layers, allowing the molten layers to merge together, then allowing resolidification to take place.
  • the fin seam is formed by contacting the inner faces of two layers of film together and then bonding the two layers together.
  • a weld is frequently used to bond the inner faces of the film together. This requires the inner layers of the film to be made from a thermoplastic material.
  • the fin seal Compared to the lap seal, the fin seal requires a greater area of flexible film for the same volume of package.
  • a lap seal mean that it can only be conveniently formed at an early stage in the manufacture of a package, before product is in the partially formed package, as it requires the application of a sealing bar to the inner and outer surfaces of the package.
  • the fin seal can be used when there is product in the package, and to form the final seam closing the package, as sealing bars have only to be applied to the outer surfaces of the package.
  • it may be formed by sealing a lengthwise seam sealing strip onto the reciprocally abutting lengthwise edges (taping seam) .
  • the sachet is preferably formed of a water-insoluble thermoformable plastics material such as polystyrene, high or low-density polyethylene, polypropylene.
  • An insoluble sachet is advantageous for when the user has wet hands which invariably results during pre-treatment and hand washing fabrics. Water soluble sachets and tablets may, in such circumstances begin to prematurely dissolve whereas a non- soluble sachet would not.
  • All of the above polymers include the aforementioned polymer classes whether as single polymers or as copolymers formed of monomer units or as copolymers formed of monomer units derived from the specified class or as copolymers wherein those monomer units are copolymerised with one or more comonomer units.
  • Blends i.e. not copolymers of two or more polymers recited herein, may also be used.
  • a plurality of sachets according to the present invention may be formed together end to end, e.g. on a vertical form fill and seal machine. Batches of sachets may be provided held together end-to-end in ⁇ strings' a line of weakness in the material separating each sachet from an adjacent sachet. Then, in use, the consumer may tear-off an individual container leaving the remainder in the ⁇ string' .
  • Fill volumes of contents of the sachet are from 3Og to 10Og, for example 4Og to 7Og. In one example the fill volume is
  • the dosage may be such to provide a unit dose, which as it is in particulate form is advantageous because it offers high washing efficiency as compared with, for example, other unit dose formats such as compacted tablets.
  • EXAMPLES 1 and 2 are particularly suitable for handwashing formulations.
  • Example 1 is particularly suitable for handwashing formulations.
  • the following formulation was prepared by drum drying alpha- olefin sulphonate paste (70 wt%) , alkyl ether sulphate paste (70 wt%) and sodium alkaline silicate solution to form granules. Sodium carboxymethyl cellulose, fluorescer and enzymes were subsequently admixed.
  • Alpha-olefin sulphonate (38 wt% solution) , alkyl ether sulphate (28.5 wt% solution), fluorescer and sodium alkaline silicate (42 wt% solution) were mixed to form a slurry which was drum-dried.
  • the resulting product was granulated in a L ⁇ dige Ploughshare mixer with additional AOS (38 wt% active) , silica, sodium carboxymethyl cellulose, enzymes (Enzyme Ace protease/lipase granules and cellulase) and perfume.
  • Raw materials and their suppliers were as in Example 1. The resulting formulation and some physical properties are shown below.
  • the tgo dissolution time is the time required for 90 wt% dissolution (as measured by a conductivity method) .
  • F1-F4 were typical detergent base powders containing substantial levels of builder, anionic surfactant and nonionic surfactant.
  • B1-B3 were builder granules.
  • Nonionic surfactants ex ICI.
  • Granular components Al, A2 and A3 containing high levels of anionic surfactant were prepared by non-spray-drying processes as follows.
  • NaPAS sodium primary alcohol sulphate particles
  • the temperature of the material entering the drying zone was set at 6O 0 C and a small negative pressure was applied to the drying zone.
  • a throughput in the flash drier of 120 kg/hr of paste was used.
  • the temperature of the wall of the drying zone was initially 14O 0 C.
  • the heat transfer area of the drying and cooling zones was 10 m 2 and 5m 2 respectively.
  • the temperature of the wall of the drying zone was raised in steps to 170 0 C.
  • the throughput was increased in steps to 430 kg/hr at 170 0 C.
  • the process conditions were stabilised for 15 minutes.
  • the particles then passed to a cooling zone operated at a temperature of 30 0 C.
  • NaLAS sodium linear alkyl benzene sulphonate particles
  • zeolite MAP was dosed as a layering agent and optionally sodium sulphate was dosed as well.
  • a 1.2 m 2 VRV flash-drier machine was used having three equal jacket sections. Dosing ports for liquids and powders were situated just prior to the first hot section, with mid-jacket dosing ports available in the final two sections. Zeolite was added via this port in the final section. An electrically-powered oil heater provided the heating to the first two jacket sections. Ambient process water at 15°C was used for cooling the jacket in the final section.
  • Make-up air flow through the reactor was controlled between 10 and 50 m 3 /kg hr by opening a bypass on the exhaust vapour extraction fan. All experiments were carried out with the motor at full-speed giving a tip speed of about 30 m/s. Screw-feeders were calibrated to dose sodium carbonate and zeolite MAP for layering. The sodium carbonate and liquids were added just prior to the first hot section and zeolite layering was added into the third section which was cold. The minimum level of zeolite was added to give free-flowing granules leaving the drier. A jacket temperature of 145 0 C was used in the first two sections, with an estimated throughput of components 60 to 100 kg/hr. A degree of neutralisation of alkyl benzene sulphonate of greater than 95 was achieved. The bulk density, surfactant level and compressibility of the particles was then measured.
  • Alpha-olefin sulphonate (AOS) granules A3 were produced in a similar manner by drying an AOS paste containing 70% neutralised AOS and 30% water in a dryer/granulator supplied by VRV SpA, Italy.
  • the temperature of the material fed into the drying zone was set at 60°C and a small negative pressure was applied to the drying zone.
  • the temperature of the wall of the drying zone was initially 140 0 C.
  • the heat transfer areas of the drying and cooling zones were 0.8 m 2 and 0.4 m 2 respectively.
  • the temperature of the wall of the drying zone was raised in steps to 155°C.
  • the particles then passed to a cooling zone operated at a temperature of 30 0 C and were collected as free flowing granules.
  • the anionic surfactant granules had the following compositions:
  • a granular component Nl containing nonionic surfactant was manufactured by the following process.
  • a mixture of sodium sulphate, sodium carbonate and Sokalan (Trade Mark) CP5 (acrylic/maleic copolymer ex BASF, Na salt] was spray-dried to form a porous carrier powder of the formulation given below.
  • the slurry was made by successively dosing Sokalan CP5, sodium sulphate and sodium carbonate in water.
  • the moisture content of the slurry was 55% at a temperature 90 0 C.
  • the slurry was sprayed in a counter-current spray-drying tower using an inlet temperature of 350-400 0 C.
  • Nonionic surfactant was sprayed into this spray-dried carrier in a rotating pan-granulator, resulting in the following final composition Nl.
  • a second nonionic surfactant granule N2 was manufactured by the following procedure.
  • Silica (Sorbosil TC15 ex Crosfield) was dosed into a Fukae FS30 granulator and a mixture of nonionic surfactant (Synperonic 7 supplied by ICI) and Pristerene 4916 (fatty acid supplied by Unichema) at a temperature of approximately 60°C was added on top of the solid. Thereafter, 50% sodium hydroxide solution was sprinkled on top. Directly after addition of the sodium hydroxide, the mixture was granulated using an agitator speed of 200 rpm and a chopper speed of
  • the composition was as follows:
  • detergent base powders having the following compositions were prepared in a Vblender by addition of the various powders followed by 5 minutes mixing.
  • the powder properties are shown in the following Tables.
  • Sodium tripolyphosphate built compositions having a medium surfactant level were manufactured by blending the following components. All three compositions had the same final composition (ie that of base powder F2) .
  • the antifoam granule contained 70 wt% sodium carbonate, 18 wt% silicone oil and 12 wt% filler materials.
  • the base powder has been reformulated to include components of compressibility less than 17%, provides a low compressibility and high DFR.
  • Dynamic flow rate is measured by the following method.
  • the apparatus used consists of a cylindrical glass tube having an internal diameter of 35 mm and a length of 600 mm.
  • the tube is securely clamped in a position such that it ' s longitudinal axis is vertical. Its lower end is terminated by means of a smooth cone of polyvinyl chloride having an internal angle of 15° and a lower outlet orifice of diameter 22.5 mm.
  • a first beam sensor is positioned 150 mm above the outlet, and a second beam sensor is positioned 250 mm above the first sensor.
  • the outlet orifice is temporarily closed, for example, by covering with a piece of card, and powder is poured through a funnel into the top of the cylinder until the powder level is about 10 cm higher than the upper sensor; a spacer between the funnel and the tube ensures that filling is uniform.
  • the outlet is then opened and the time t: (seconds) taken for the powder level to fall from the upper sensor to the lower sensor is measured electronically. The measurement is normally repeated two or three times and an average value taken. If V is the volume (ml) of the tube between the upper and lower sensors, the dynamic flow rate DFR (ml/s) is given by the following equation:
  • the method of measuring compressibility used in the present invention is as follows.
  • the experiment is carried out at 20-25 0 C and a relative humidity of about 40%. These values represent typical ambient conditions in a northern European indoor laboratory environment.
  • the exact relative humidity at which the measurement is carried out is not critical, provided that it is not so high that the samples take up moisture.
  • the apparatus comprises a perspex cylinder with an internal diameter of 54 mm and a height of 170 mm.
  • the side of the cylinder is graduated in millimetres.
  • a piston is provided which fits the internal diameter of the perspex cylinder.
  • the top of the piston has means to support a weight, whereby pressure can be applied to detergent powder contained in the perspex cylinder.
  • the combined mass of the piston and the weight is 25 kg.
  • the perspex cylinder is filled with particulate detergent composition (herein after "powder") .
  • the top of the layer of powder is levelled by removing superfluous powder with a straight- edge.
  • a standard volume of powder is tested. The initial volume is measured by means of the scale on the side of the cylinder.
  • the piston and weight are then lowered onto the surface of the powder and are allowed to rest freely on the powder for 60 seconds.
  • the volume of the powder after 60 seconds is measured by means of the scale on the side of the cylinder.
  • volume reduction is used to calculate the compressibility using the following equation:
  • Compressibility (initial volume - final volume) x 100
  • Figure 1 shows a sachet according to one embodiment of the invention.
  • Figure 2 shows a cross section along A-A of fig 1
  • a elongate tubular sachet 1 containing a particulate detergent composition comprises a longitudinally folded packaging wrapper having a longitudinal seal 3 and transverse end seals 5,7 at respective ends 9,11 of the wrapper (ie. a "three-seamed" sachet) .
  • End 11 is the dispensing opening end and end 9 is the scrubbing end.
  • the longitudinal seal is a fin seal, formed by contracting the inner faces of the fin together and then bonding, eg. welding the two layers together. If welding is used to bond the surfaces, the bonding inner faces need to be made of thermoplastic material.
  • the end seals 5 and 7 are heat sealed.
  • the edge of end seal 7 has a zig-zag configuration to allow for easy opening of the pack at this end.
  • the edge of end 9 is straight to discourage opening at this, the scrubbing end.
  • the end 9 has a longer seal area, and the sealing process involves the application of a surface finish (to both sides of the sachet) which has upstanding ribs 15 (shown in cross section on figure 2) for scrubbing and (on the other side) for gripping.
  • the sachet measured before filling is 45 mm wide and 185 mm long halved length to width ratio of about 4:1.
  • the sachets are made using vertical form fill and seal (VFFS) machinery so that a long tube is first formed from a sheet of material and creating a longitudinal lap seal as described above.
  • the tube is then moved to a filling station where a section is flattened at a sealing device positioned below the filling station and sealed transversely using an 'impulse' sealer.
  • the tube is then moved downward through a predetermined distance and filled with a dose of the particulate detergent composition.
  • a second seal is then formed across the tube, above the fill level.
  • the second seal is a modified sealer to provide the moulded ribs 15.
  • a sachet 185mm long and 45mm wide with end seals 5-7mm in length, can accommodate approximately 45-5Og, and preferably 47g detergent powder.
  • a dynamic flow rate of at least 100 ml/s is advantageous for such dimensions.

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  • 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)
  • Detergent Compositions (AREA)

Abstract

La présente invention se rapporte à une composition particulaire de traitement de tissus présentant un débit dynamique d'au moins 90 ml/s, ladite composition détergente particulaire étant caractérisée en ce qu'elle est contenue dans un sachet tubulaire allongé non hydrosoluble comportant une partie de lavage.
EP05772176A 2004-08-25 2005-08-01 Composition detergente particulaire, et emballage associe Withdrawn EP1781770A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0418918A GB0418918D0 (en) 2004-08-25 2004-08-25 A particulate detergent composition, and packaging therefor
PCT/EP2005/008381 WO2006021294A1 (fr) 2004-08-25 2005-08-01 Composition detergente particulaire, et emballage associe

Publications (1)

Publication Number Publication Date
EP1781770A1 true EP1781770A1 (fr) 2007-05-09

Family

ID=33104587

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05772176A Withdrawn EP1781770A1 (fr) 2004-08-25 2005-08-01 Composition detergente particulaire, et emballage associe

Country Status (7)

Country Link
EP (1) EP1781770A1 (fr)
CN (1) CN101048489A (fr)
AR (1) AR054079A1 (fr)
BR (1) BRPI0514578A (fr)
GB (1) GB0418918D0 (fr)
WO (1) WO2006021294A1 (fr)
ZA (1) ZA200701445B (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1530122A (en) * 1923-05-04 1925-03-17 Johnston John White Shoe-cleaning device
US2225540A (en) * 1938-06-04 1940-12-17 Urlyn C Tainton Powder container and applicator
EP0024756A1 (fr) * 1979-08-17 1981-03-11 THE PROCTER & GAMBLE COMPANY Récipient distributeur avec moyen de fixation pour dispositif de récurage
ATE10010T1 (de) * 1981-03-20 1984-11-15 Unilever Nv Verfahren zur herstellung von reinigungsmittelzusammensetzungen, die natriumaluminiumsilikate enthalten.
GB8817386D0 (en) * 1988-07-21 1988-08-24 Unilever Plc Detergent compositions & process for preparing them
GB0000846D0 (en) * 2000-01-15 2000-03-08 Master Chemicals Leeds Limited Combined container and cleaning device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006021294A1 *

Also Published As

Publication number Publication date
AR054079A1 (es) 2007-06-06
BRPI0514578A (pt) 2008-06-17
WO2006021294A1 (fr) 2006-03-02
GB0418918D0 (en) 2004-09-29
CN101048489A (zh) 2007-10-03
ZA200701445B (en) 2008-07-30

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