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WO2003037741A1 - Capsules solubles dans l'eau - Google Patents

Capsules solubles dans l'eau Download PDF

Info

Publication number
WO2003037741A1
WO2003037741A1 PCT/EP2002/012016 EP0212016W WO03037741A1 WO 2003037741 A1 WO2003037741 A1 WO 2003037741A1 EP 0212016 W EP0212016 W EP 0212016W WO 03037741 A1 WO03037741 A1 WO 03037741A1
Authority
WO
WIPO (PCT)
Prior art keywords
capsule
water soluble
detergent composition
seal
walls
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.)
Ceased
Application number
PCT/EP2002/012016
Other languages
English (en)
Inventor
Marcel Cornelis Bruggeman
Rudolfus Johannes Hendrikus Hafkamp
Paul Naylor
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.)
Hindustan Unilever Ltd
Unilever NV
Original Assignee
Hindustan Lever Ltd
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9925075&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2003037741(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Hindustan Lever Ltd, Unilever NV filed Critical Hindustan Lever Ltd
Priority to EP02792726A priority Critical patent/EP1440017B1/fr
Priority to CA2465263A priority patent/CA2465263C/fr
Priority to BR0213833-6A priority patent/BR0213833A/pt
Priority to DE60225462T priority patent/DE60225462T2/de
Publication of WO2003037741A1 publication Critical patent/WO2003037741A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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

Definitions

  • This invention relates to water soluble containing a detergent composition.
  • Detergent compositions for machine washing of laundry are provided in many forms such as free-flowing powders, liquids.
  • Detergents in the form of compressed powder tablets are also commonly available. These are advantageous in that they do not require measuring they are thus easier to handle and dispense into the wash load and allow for accurate dosing of detergent .
  • Water-soluble capsules generally comprise a detergent composition encapsulated with water-soluble film, such as polyvinyl alcohol. Encapsulation allows for handling of the product without direct contact with the detergent composition. This is especially advantageous when the detergent composition includes aggressive cleaning components which would irritate the skin on direct contact.
  • capsule film may remain undissolved, presenting an unsightly mess to the user when they remove the washing from the machine.
  • the invention provides a water soluble capsule containing a detergent composition, the capsule being in the form of a polyhedron having four or more walls and characterised in that each wall is inclined at an angle relative to each other wall.
  • the advantage of the topological constraints imposed by the above arrangement is that if the capsule does start to collapse, (after partial dissolution of the capsule and release of detergent) it is more difficult for walls to become co-joined with complete evacuation of fluid. Even if walls do become attached in places the orientation of the walls relative to each other is such that this facilitates crumpling of the walls and entrapment of wash liquor which aids dissolution.
  • each wall is between 30-90 degrees.
  • the inclination of each wall is between approximately 30 - 60 degrees.
  • the capsule is in the form of a tetrahedron (four-walled polyhedron) .
  • the tetrahedron may be regular or irregular i.e. the walls may take the shape of regular or irregular polygons.
  • the tetrahedron shape is advantageous in that it can be a fairly simple structure to manufacture (as compared with other polyhedrons with more walls) and at the same time the inclination of each wall relative to each other walls is optimised.
  • the invention provides a water soluble capsule containing a detergent composition, the capsule being formed from a flexible film disposed in folded configuration and sealed with a) one or more longitudinal seals; and b) first and second end seals located at opposed ends of the capsule, characterised in that the first end seal is substantially orthogonal to the or each longitudinal seal and inclined at an angle to the second end seal .
  • the capsule may be formed into a polyhedron by adapting existing vertical form fill and seal machinery, thereby reducing the costs of producing capsules according to the invention.
  • the relative inclination of first and second end seals is between approximately 30 and 90 degrees.
  • the first and second end seals are orientated orthogonal relative to each other. This provides a tetrahedron shaped capsule.
  • transition between adjacent walls may be slightly curved (e.g. due to the force exerted by the contents of the capsule, and the flexibility of the capsule material) whilst at the same time, distinct walls can still be seen and are still distinguishable from one another.
  • the walls may be substantially flat however, it this is not essential, indeed the or each wall may have a slight curvature (e.g. due to the force exerted by the contents of the capsule, and the flexibility of the capsule material) so long as the overall shape is still apparent and the general plane of each wall is inclined to the general plane of each of the other walls.
  • edges of the polyhedron may be formed with increased sharpness by, for example, arrangement of one or more seals during formation, so that one or more seals are orientated along respective one or more edge portions of the polyhedron to give more distinct edges.
  • the capsule may contain any form of detergent: liquid, powder, gel, paste or the like or combinations thereof.
  • the detergent composition may be a laundry (fabric cleaning/treatment) detergent composition or a dishwashing machines detergent composition and thus is suitable for use in (fabric) washing and dishwashing machines (automatic or manual) .
  • Figure 1 is a perspective view of a capsule according to another form of the invention.
  • Figure 2 is a side view of the capsule of Figure 1;
  • Figures 3a and 3b are front and side views of a known pillow shaped capsule containing a liquid detergent ;
  • Figure 4 is a view of a capsule according to another form of the invention.
  • Figure 5 is a view of a capsule according to another form of the invention.
  • Figure 6 is a view of a capsule according to another form of the invention.
  • a capsule 1 according to one form of the invention is shown, which contains a measured unit dose of flowable detergent composition 2, which may be liquid, powder, gel, paste or a combination thereof.
  • the detergent is a liquid detergent (as described below) .
  • the capsule is in the form of a four-walled polyhedron, i.e. a tetrahedron, each wall (only two shown: 10,12) of the polyhedron being inclined at an angle of relative to each other wall (10,12) .
  • the capsule is formed from a flexible film disposed in folded configuration and sealed with one longitudinal seal 4a and first and second end seals 6,8 located at opposed ends of the capsule 1.
  • the first seal 6 is substantially orthogonal to the longitudinal seal 4a and further it is substantially orthogonal to the second end seal 8.
  • the capsule shown in the drawings is formed by a so-called
  • a flat web of thermoplastic film is unwound from a roll and formed into a continuous tube in a tube-forming section, by heat-sealing together the longitudinal edges of the web to form a lap seal or a fin seal which eventually forms the longitudinal seal 4a of the capsule 1.
  • the tube thus formed is then pulled down to a filling station.
  • a section of the tube is flattened at a sealing device positioned below the filling station, and the first transverse seal is made, providing the first end seal of the capsule 1 which is a fluid-impervious barrier.
  • the tube is then moved down through a predetermined distance, and the jaws of the sealing device are closed.
  • the flowable detergent is then caused to enter the tube, and fill the tube upwardly from the first end seal 6.
  • a second transverse seal is then made at an angle orthogonal to the first transverse seal 6, forming the second end seal 8 of the capsule and trapping the flowable detergent composition inside the capsule. This second end seal 8 is located just above the fill-level in the tube to avoid trapping liquid in the seal which would compromise the seal integrity.
  • the sealing and severing of successive end seals can be performed by mutually transverse pairs of sealing bars which are motor driven to make successive seals in mutually transverse directions.
  • the filled package now in the form of a tetrahedron pouch, is either cut away or left in place.
  • the second transverse seal also forms the bottom seal of the next package, and the process can be repeated to form the next package.
  • the sealing device for forming the transverse seals is commonly an impulse sealer, wherein an electrical current flows through the sealing element for only a fraction of the sealing cycle. After the current has heated the sealing element and melted the thermoplastic film, there is then a cooling period, during which the seal resolidifies.
  • a typical vertical form, fill and seal machine is sold under the trade name GV2K1 by Gainsborough Engineering Company.
  • GV2K1 Vertical form, fill and seal machine
  • some of the edges 24,22 of the tetrahedron are sharply defined by seals -
  • some of the edges 20,26,28 have no seal so that the transition between adjacent walls e.g. walls 10 and 12 is slightly curved (due to the pressure of the contents contained in the capsule) whilst at the same time, two distinct walls 10, 12 can still be seen extending from such an edge 20 and the overall shape of a tetrahedron is apparent.
  • each wall of the capsule is entirely flat, indeed the walls may have a slight curvature as shown in the drawings (e .g. due to the force exerted by the contents of the capsule) so long as general plane of each wall is inclined to the general plane of each of the other walls so that the overall tetrahedron shape is still apparent .
  • the tetrahedron shapes shown are not perfectly regular tetrahedrons as the walls are not perfectly regular polygons.
  • Regular tetrahedrons can be formed by adjusting the width of the tube (i.e. length of end seal) to equal the length of the tube (length of the longitudinal seal) .
  • the capsule 1 shown here has end seal 6 oriented orthogonal relative to the longitudinal seal and inclined at an angle of approximately 80 degrees to the second end seal 8. This produces what may be describes as a slightly skewed tetrahedon, -whose walls are asymmetrical. However, the shape still functions to increase the solubility of the capsule film.
  • the capsule shown here is formed with two longitudinal seals 4b and 4c along side edges (26,28) of the capsule during formation.
  • the polyhedron formed has a greater number of distinct edges (22,24,26,28) where the seals (4b, c, 6, 8) are located (as compared say with the capsule shown in figs 1 and 2) .
  • Figures 6 shows another capsule according to the invention.
  • the capsule has five-walls and is configured as a pyramid with 4 walls and a base.
  • a capsule according to the invention contains a liquid detergent composition.
  • a liquid detergent composition it is preferred that the composition is essentially non-aqueous.
  • compositions may be used which contain substantial amounts of water, provided that this water is in a form where its chemical activity is reduced (e.g. as water of crystallisation or in combination with a solvent such that its vapour pressure is reduced) such that the soluble film does not dissolve prematurely.
  • capsules contain a granular laundry detergent powder as follows:
  • capsules according to the invention can conveniently be placed directly into the wash liquor where the film dissolves, releasing the liquid detergent composition. Dissolution of all the capsule film is aided by the topological constraints imposed by the above arrangement. If the capsule does start to collapse, (after partial dissolution of the capsule and release of detergent) it is more difficult for walls to- become co-joined with complete evacuation of fluid. Even if walls do become attached in places the orientation of the walls relative to each other is such that this facilitates crumpling of the walls and entrapment of wash liquor which aids dissolution and reduces the possibility of undissolved capsule film persisting throughout the wash.

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)
  • Detergent Compositions (AREA)
  • Cosmetics (AREA)

Abstract

L'invention concerne une capsule soluble dans l'eau (1) contenant une composition détergente (2) pouvant être une composition de lavage de linge ou de vaisselle. Ladite capsule peut se présenter sous la forme d'un polyèdre présentant au moins quatre faces et caractérisé en ce que chaque face (10, 12) du polyèdre est inclinée d'un certain angle par rapport à chacune des autres faces (10, 12). L'invention concerne également une capsule soluble dans l'eau (1) contenant une composition détergente, ladite capsule étant formée d'une pellicule flexible disposée de façon pliée, et fermée par a) un ou plusieurs joints longitudinaux (4a, 4b, 4c), et b) des premier et deuxième joints terminaux (6, 8) disposés sur des extrémités opposées de la capsule (1), le premier joint terminal (6) étant essentiellement orthogonal à ou aux joints longitudinaux (4a, 4b, 4c) et incliné d'un certain angle par rapport au deuxième joint terminal (8). Dans un mode de réalisation préféré, l'angle d'inclinaison est un angle droit de manière que la capsule selon l'invention se présente sous la forme d'un tétraèdre.
PCT/EP2002/012016 2001-11-02 2002-10-25 Capsules solubles dans l'eau Ceased WO2003037741A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP02792726A EP1440017B1 (fr) 2001-11-02 2002-10-25 Capsules solubles dans l'eau
CA2465263A CA2465263C (fr) 2001-11-02 2002-10-25 Capsules solubles dans l'eau
BR0213833-6A BR0213833A (pt) 2001-11-02 2002-10-25 Cápsula solúvel em água contendo uma composição detergente
DE60225462T DE60225462T2 (de) 2001-11-02 2002-10-25 Wasserlösliche kapseln

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0126407.6 2001-11-02
GBGB0126407.6A GB0126407D0 (en) 2001-11-02 2001-11-02 Water soluble capsules

Publications (1)

Publication Number Publication Date
WO2003037741A1 true WO2003037741A1 (fr) 2003-05-08

Family

ID=9925075

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2002/012016 Ceased WO2003037741A1 (fr) 2001-11-02 2002-10-25 Capsules solubles dans l'eau

Country Status (10)

Country Link
EP (1) EP1440017B1 (fr)
AR (1) AR042596A1 (fr)
AT (1) ATE388096T1 (fr)
BR (1) BR0213833A (fr)
CA (1) CA2465263C (fr)
DE (1) DE60225462T2 (fr)
ES (1) ES2300499T3 (fr)
GB (1) GB0126407D0 (fr)
WO (1) WO2003037741A1 (fr)
ZA (2) ZA200403191B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003052042A3 (fr) * 2001-12-14 2003-09-04 Unilever Plc Sac polyedre hydrosoluble contenant un detergent lessiviel liquide en couches
WO2012104610A1 (fr) * 2011-01-31 2012-08-09 Reckitt Benckiser N.V. Contenant destiné à être utilisé dans un procédé de lavage

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014109313A1 (de) * 2014-07-03 2016-01-07 Ideapro Gmbh Dosiervorrichtung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4156047A (en) * 1976-08-18 1979-05-22 E. I. Du Pont De Nemours And Company Water-soluble films from polyvinyl alcohol compositions
GB2305931A (en) * 1995-10-02 1997-04-23 Burman Mueller Frances Honor Dissolvable container
WO2000055068A1 (fr) * 1999-03-17 2000-09-21 Unilever Plc Emballage hydrosoluble
WO2001085895A1 (fr) * 2000-05-12 2001-11-15 Unilever N.V. Produit de nettoyage en dose unitaire
WO2002085737A1 (fr) * 2001-04-20 2002-10-31 Reckitt Benckiser (Uk) Limited Enveloppe soluble dans l'eau pourvue d'au moins deux ouvertures

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4156047A (en) * 1976-08-18 1979-05-22 E. I. Du Pont De Nemours And Company Water-soluble films from polyvinyl alcohol compositions
GB2305931A (en) * 1995-10-02 1997-04-23 Burman Mueller Frances Honor Dissolvable container
WO2000055068A1 (fr) * 1999-03-17 2000-09-21 Unilever Plc Emballage hydrosoluble
WO2001085895A1 (fr) * 2000-05-12 2001-11-15 Unilever N.V. Produit de nettoyage en dose unitaire
WO2002085737A1 (fr) * 2001-04-20 2002-10-31 Reckitt Benckiser (Uk) Limited Enveloppe soluble dans l'eau pourvue d'au moins deux ouvertures

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003052042A3 (fr) * 2001-12-14 2003-09-04 Unilever Plc Sac polyedre hydrosoluble contenant un detergent lessiviel liquide en couches
WO2012104610A1 (fr) * 2011-01-31 2012-08-09 Reckitt Benckiser N.V. Contenant destiné à être utilisé dans un procédé de lavage
GB2503818A (en) * 2011-01-31 2014-01-08 Reckitt Benckiser Nv Container for use in a washing process
US9523066B2 (en) 2011-01-31 2016-12-20 Reckitt Benckiser Finish B.V. Container for use in a washing process

Also Published As

Publication number Publication date
CA2465263C (fr) 2010-10-12
CA2465263A1 (fr) 2003-05-08
AR042596A1 (es) 2005-06-29
EP1440017B1 (fr) 2008-03-05
ES2300499T3 (es) 2008-06-16
DE60225462D1 (de) 2008-04-17
DE60225462T2 (de) 2009-04-02
ZA200403191B (en) 2005-04-28
GB0126407D0 (en) 2002-01-02
ZA200403192B (en) 2005-04-28
EP1440017A1 (fr) 2004-07-28
BR0213833A (pt) 2004-08-31
ATE388096T1 (de) 2008-03-15

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