WO2000055044A1 - Procede de production d'emballage hydrosoluble - Google Patents

Procede de production d'emballage hydrosoluble Download PDF

Info

Publication number
WO2000055044A1
WO2000055044A1 PCT/EP2000/001647 EP0001647W WO0055044A1 WO 2000055044 A1 WO2000055044 A1 WO 2000055044A1 EP 0001647 W EP0001647 W EP 0001647W WO 0055044 A1 WO0055044 A1 WO 0055044A1
Authority
WO
WIPO (PCT)
Prior art keywords
film
cavity
deformable material
resiliently deformable
curved edge
Prior art date
Application number
PCT/EP2000/001647
Other languages
English (en)
Inventor
Richard Harbour
Original Assignee
Unilever Plc
Unilever Nv
Hindustan Lever Limited
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, Hindustan Lever Limited filed Critical Unilever Plc
Priority to CA002360805A priority Critical patent/CA2360805A1/fr
Priority to BR0009048-4A priority patent/BR0009048A/pt
Priority to EP00907646A priority patent/EP1161368B1/fr
Priority to AU29161/00A priority patent/AU2916100A/en
Priority to AT00907646T priority patent/ATE226905T1/de
Priority to ROA200101005A priority patent/RO118861B1/ro
Priority to DE60000684T priority patent/DE60000684T2/de
Publication of WO2000055044A1 publication Critical patent/WO2000055044A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B11/50—Enclosing articles, or quantities of material, by disposing contents between two sheets, e.g. pocketed sheets, and securing their opposed free margins

Definitions

  • the invention relates to a process for producing a thermoformed package of the type comprising the steps of placing a first sheet of formable film over a forming die having a cavity, moulding the film into the cavity thereby forming a recess in the film, placing a composition in the thus formed recess, and sealing a second sheet of film across the recess to close the package.
  • the invention relates to such a process for producing a water- soluble package containing a detergent composition.
  • Detergent compositions for the machine washing of laundry are provided in many forms.
  • Probably the most prevalent form of laundry detergent is washing powder or granules.
  • a problem with the use of these forms of detergent is that the product needs to be dosed into the machine in such a way that the detergent is quickly and thoroughly dissolved in the wash water of the machine without coming into contact with the laundry in a solid form.
  • many dosing devices which overcome this problem have been proposed.
  • 0 343 070 and 0 343 069 teaches the use of a flexible fabric sock which holds the particulate detergent in the machine, the fabric of the sock being permeable to water so as to allow water enter the sock and carry the detergent out of the sock through the fabric walls in the form of an aqueous solution.
  • More recently unit dose forms of detergent have been proposed in the form of compressed tablets of detergent powder.
  • a problem encountered with the provision of detergent tablets is that the tablets need to be strong enough to withstand storage and transport, yet weak enough to disintegrate and dissolve quickly in the washing machine.
  • a further problem is the need to prevent the tablets "posting" in the porthole and between the drums of conventional washing machines.
  • thermoformed package of the above mentioned type the process being characterised in that the or each cavity in the forming die has a curved edge, wherein at least a portion of the curved edge is formed from a material which is less hard and more deformable than the material of the cavity.
  • at least a portion of the curved edge comprises a resiliently deformable material.
  • a predominant portion, and most preferably a whole, of the curved edge is formed of a resiliently deformable material.
  • the curved edge comprises an annular gasket of resiliently deformable material, which gasket is mounted in a circumferential groove around the or each cavity. In such a case, the gasket should be dimensioned such that, when mounted in the groove, an exposed surface of the gasket should be flush with a surface of the cavity.
  • the or each cavity is surrounded by a raised flange, wherein at least a portion, and ideally most or all, of the raised flange comprises resiliently deformable material.
  • the curved edge and flange are preferably integrally formed.
  • a single gasket preferably comprises the curved edge and the flange.
  • a ratio of a width of the flange to a minor diameter of the cavity is between 1:50 and 1:10, preferably about 1:12.
  • the resiliently deformable material is preferably silicone rubber, however other suitable material performing the same function are envisaged.
  • the film is heated by a heating plate.
  • This may be flat but preferably has at least one concave depression which in use overlies the at least one cavity, wherein the heating step involves the step of bringing the film into intimate contact with the or each depression.
  • the use of a heating plate having concave depressions helps to ensure that the film when heated thermoforms uniformly which results in a package having less weak spots.
  • intimate contact between the film and the concave depression is achieved by exerting a vacuum between the depression and the film.
  • the depression may include holes through which the vacuum may be pulled.
  • the heating plate may comprise a porous material.
  • the vacuum should ideally comprise a pressure of up to 1 Bar, and preferably be less that 0.6 Bar.
  • the film is forced into intimate contact with the concave depression by blowing air against it. Typically the pressure of the blown air will be less than 5 Bar, preferably less than 3 Bar.
  • the heating plate preferably has a temperature in the region of 100 to 120 degrees C, and ideally is approximately 110 degrees C.
  • the time the film contacts the heating plate depends to a large extent on the type of film used and the temperature of the heating plate, the time of contact between the film and the plate should be in the region 0.1 to 5 seconds, preferably 0.5 to lseconds, ideally approximately 700 milliseconds.
  • the film is a water- soluble film.
  • the package contains a liquid, gel or other type of fluent composition.
  • the liquid comprises a detergent or any other type of active agent used in the machine washing of laundry or dishes .
  • the package contains a bathing or shower gel composition or any other type of personal care composition.
  • Fig 1 is a sectional view illustration portions of a forming die and heating plate for use with the process of the invention
  • Fig 2 is a detailed sectional view of a concave depression of Fig 1 ;
  • Fig 3 is a detailed sectional view of an edge of a forming cavity according to the invention.
  • thermoforming process where a number of packages according to the invention are produced from a sheet of water soluble material, namely polyvinyl alcohol supplied under reference CC8534 from Chris Craft.
  • recesses are formed in the sheet using a forming die having a plurality of cavities with dimensions corresponding generally to the dimensions of the packages to be produced.
  • a single heating plate is used for moulding the film for all the cavities, and in the same way a single sealing plate is described.
  • a first sheet of polyvinyl alcohol film is drawn over a forming die so that the film is placed over the plurality of forming cavities in the die, the details of which are described in further detail below. In order to maximise package strength, the film is delivered to the forming die in a crease free form and with minimum tension.
  • the film is heated to 110 degrees C, for approximately 700 micro seconds.
  • a heating plate 1 is used to heat the film, which plate is positioned to superpose the forming die 2.
  • the plate includes a plurality concave depressions 3 (only one is shown) which correspond to the cavity 4 on the forming die 2.
  • Each concave depression is generally circular having a diameter of approximately 50mm and a depth of about 5mm.
  • An edge 5 of the depression 3 is radiussed as is the base 6, the radius of the base being about 50mm and the radius of the edge being about 30 mm.
  • a vacuum is pulled through the pre-heating plate to ensure intimate contact between the film and the pre-heating plate 1, this intimate contact ensuring that the film is heated evenly and uniformly (the extent of the vacuum is dependant of the thermoforming conditions and the type of film used, however in the present context a vacuum of less than 0.6 bar was found to be suitable)
  • Non-uniform heating results in a formed package having weak spots.
  • the vacuum it is possible to blow air against the film to force it into intimate contact with the preheating plate. In such cases the air should be blown at a pressure of less than 3 Bar.
  • thermoformed film is thus moulded into the cavities forming a plurality of recesses which, once formed, are retained in their thermoformed orientation by the application of a vacuum through the walls of the cavities. This vacuum is maintained at least until the packages are sealed.
  • the composition in this case a liquid detergent is added to each of the recesses.
  • a second sheet of polyvinyl alcohol film is then superposed on the first sheet covering the filled recesses and heatsealed thereto using a heating plate.
  • the heat sealing plate which is flat, operates at a temperature of about 140 to 160 degrees centigrade, and contacts the films for 1 to 2 seconds and with a force of 8 to 30kg/cm2, preferably 10 to 20kg/cm2.
  • each cavity 4 is generally dome shaped having a curved edge 10 with a radius of curvature.
  • a raised flange 11 surrounds each cavity to ensure that the films are sealed together along the flange to form a continuous seal.
  • the radiussed edge 10 and raised flange 11 are both formed a by a resiliently deformable material gasket 12 of silicone rubber. This results in reduced force being applied at the inner edge of the sealing flange to avoid heat/pressure damage to the film.
  • the packages formed are separated from the web of sheet film using cutting means. At this stage it is possible to release the vacuum on the die, and eject the formed packages from the forming die. In this way the packages are formed, filled and sealed while nesting in the forming die. In addition they may be cut while in the forming die as well .
  • the relative humidity of the atmosphere is controlled to ca . 50%. This is done to maintain the heat sealing characteristics of the film.
  • it may be necessary to reduce the relative humidity ensure that the films have a relatively low degree of plasticisation and as such tend to be stiffer resulting in easier handling.
  • the actual specific RH of the atmosphere needed will vary according to the temperature of the environment and the type of film used, however for temperatures in the region of 20 degrees C, the RH should be in the region of 30 to 50% depending on the thickness and elasticity of the film.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Packages (AREA)
  • Wrappers (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Paper (AREA)
  • Detergent Compositions (AREA)

Abstract

La présente invention concerne un procédé de production d'un emballage thermoformé qui consiste à placer un premier film sur une matrice de formation présentant au moins une cavité, à chauffer le film afin de le mouler dans ladite cavité avec pour résultat la formation au moins d'un creux dans le film, à placer une composition dans ce creux et à sceller un second film en travers du creux formé, dans le but de produire au moins un emballage fermé. Chaque cavité comprend une extrémité incurvée dont au moins une partie comprend un matériau déformable résilient.
PCT/EP2000/001647 1999-03-17 2000-02-29 Procede de production d'emballage hydrosoluble WO2000055044A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
CA002360805A CA2360805A1 (fr) 1999-03-17 2000-02-29 Procede de production d'emballage hydrosoluble
BR0009048-4A BR0009048A (pt) 1999-03-17 2000-02-29 Processo para produzir uma embalagem termoconformada
EP00907646A EP1161368B1 (fr) 1999-03-17 2000-02-29 Procede de production d'emballage hydrosoluble
AU29161/00A AU2916100A (en) 1999-03-17 2000-02-29 A process for producing a water soluble package
AT00907646T ATE226905T1 (de) 1999-03-17 2000-02-29 Verfahren zum herstellen einer wasserlöslichen verpackung
ROA200101005A RO118861B1 (ro) 1999-03-17 2000-02-29 Procedeu de realizare aunei capsule solubile în apă
DE60000684T DE60000684T2 (de) 1999-03-17 2000-02-29 Verfahren zum herstellen einer wasserlöslichen verpackung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9906179.8A GB9906179D0 (en) 1999-03-17 1999-03-17 A process for producing a water soluble package
GB9906179.8 1999-03-17

Publications (1)

Publication Number Publication Date
WO2000055044A1 true WO2000055044A1 (fr) 2000-09-21

Family

ID=10849833

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2000/001647 WO2000055044A1 (fr) 1999-03-17 2000-02-29 Procede de production d'emballage hydrosoluble

Country Status (14)

Country Link
EP (1) EP1161368B1 (fr)
CN (1) CN1344210A (fr)
AT (1) ATE226905T1 (fr)
AU (1) AU2916100A (fr)
BR (1) BR0009048A (fr)
CA (1) CA2360805A1 (fr)
CZ (1) CZ20013334A3 (fr)
DE (1) DE60000684T2 (fr)
ES (1) ES2184696T3 (fr)
GB (1) GB9906179D0 (fr)
RO (1) RO118861B1 (fr)
TR (1) TR200102518T2 (fr)
WO (1) WO2000055044A1 (fr)
ZA (1) ZA200105054B (fr)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6451750B2 (en) 2000-04-14 2002-09-17 Unilever Home & Personal Care Usa Division Of Conopco, Inc. Water soluble package and liquid contents thereof
GB2374830A (en) * 2001-04-20 2002-10-30 Reckitt Benckiser Improvements in or relating to compositions/components including a thermoforming step
US6479448B2 (en) 2000-05-15 2002-11-12 Unilever Home & Personal Care Usa, Division Of Conopco, Inc. Liquid detergent composition
WO2003084836A1 (fr) 2002-04-10 2003-10-16 Henkel Kommaditgesellschaft Auf Aktien « recipients solubles dans l'eau »
WO2004037650A2 (fr) 2002-09-26 2004-05-06 Henkel Kommanditgesellschaft Auf Aktien Detergents sous forme de corps moules fortement tendus
US7083047B2 (en) 2002-10-03 2006-08-01 Unilever Home & Personal Care Usa Division Of Conopco, Inc. Polymeric film for water soluble package
US7375070B2 (en) 2002-08-14 2008-05-20 Henkel Kommanditgesellschaft Auf Aktien Portioned detergent composition
EP2504242A1 (fr) * 2009-11-23 2012-10-03 Rideau Machinery Inc. Améliorations apportées au thermoformage, par mouvement de rotation continu, de poches solubles
DE10305799B4 (de) * 2003-02-12 2012-12-27 Henkel Ag & Co. Kgaa Verfahren zur Herstellung eines blasgeformten Waschmittelkörpers
WO2014207286A1 (fr) 2013-06-28 2014-12-31 Kao Corporation, S.A. Composition détergente liquide
WO2015000970A1 (fr) 2013-07-03 2015-01-08 Basf Se Composition polymère solide obtenue par polymérisation d'un monomère contenant des groupes acides en présence d'un composé polyéther
WO2017158002A1 (fr) 2016-03-16 2017-09-21 Basf Se Films polymères à action détergente et nettoyante, procédé pour les produire et leur utilisation
WO2018109200A1 (fr) 2016-12-16 2018-06-21 Basf Se Feuilles multicouches, leur procédé de fabrication et leur utilisation
WO2018109201A1 (fr) 2016-12-16 2018-06-21 Basf Se Films multicouche à action détergente et nettoyante, procédé de production desdits films et utilisation correspondante
WO2019238730A1 (fr) 2018-06-14 2019-12-19 Basf Se Procédé pour la production de contenants hydrosolubles pour l'ajout dosé de détergent
US10703515B2 (en) 2016-08-08 2020-07-07 Cloud Packaging Solutions Llc Pouch forming mold configuration, method and pouch
WO2020224962A1 (fr) 2019-05-03 2020-11-12 Basf Se Films hydrosolubles à topographie tridimensionnelle
US10974412B2 (en) 2016-11-15 2021-04-13 Cloud Packaging Solutions Llc Machine for cutting pouches with shaped perimeter edge, method and pouch
WO2022017974A1 (fr) 2020-07-24 2022-01-27 Basf Se Film multicouche à base de caséine présentant des propriétés barrières améliorées

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102793607B (zh) * 2012-07-23 2014-08-20 枝江奥美医疗用品有限公司 一种自粘弹性绷带的制造方法及自粘弹性绷带
CN105035389B (zh) * 2015-08-18 2017-03-08 瑞安市贝德机械科技有限公司 水溶膜包装机

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2060544A (en) * 1979-10-17 1981-05-07 Fuji Pack System Ltd Packaging apparatus
DE9303456U1 (de) * 1993-03-09 1993-04-29 Mosheer, Hanspeter, Bürglen Vorrichtung zum Erzeugen, Beladen und Verschließen von Blisterpackungen
EP0608910A1 (fr) 1991-04-05 1994-08-03 Rhone-Poulenc Agriculture Ltd. Emballage pour pesticides

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2060544A (en) * 1979-10-17 1981-05-07 Fuji Pack System Ltd Packaging apparatus
EP0608910A1 (fr) 1991-04-05 1994-08-03 Rhone-Poulenc Agriculture Ltd. Emballage pour pesticides
DE9303456U1 (de) * 1993-03-09 1993-04-29 Mosheer, Hanspeter, Bürglen Vorrichtung zum Erzeugen, Beladen und Verschließen von Blisterpackungen

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6451750B2 (en) 2000-04-14 2002-09-17 Unilever Home & Personal Care Usa Division Of Conopco, Inc. Water soluble package and liquid contents thereof
US6479448B2 (en) 2000-05-15 2002-11-12 Unilever Home & Personal Care Usa, Division Of Conopco, Inc. Liquid detergent composition
GB2374830A (en) * 2001-04-20 2002-10-30 Reckitt Benckiser Improvements in or relating to compositions/components including a thermoforming step
WO2003084836A1 (fr) 2002-04-10 2003-10-16 Henkel Kommaditgesellschaft Auf Aktien « recipients solubles dans l'eau »
DE10215601B4 (de) * 2002-04-10 2005-08-04 Henkel Kgaa Wasserlöslicher Behälter sowie Verfahren zu seiner Herstellung und Verwendung desselben
US7375070B2 (en) 2002-08-14 2008-05-20 Henkel Kommanditgesellschaft Auf Aktien Portioned detergent composition
WO2004037650A2 (fr) 2002-09-26 2004-05-06 Henkel Kommanditgesellschaft Auf Aktien Detergents sous forme de corps moules fortement tendus
US7083047B2 (en) 2002-10-03 2006-08-01 Unilever Home & Personal Care Usa Division Of Conopco, Inc. Polymeric film for water soluble package
DE10305799B4 (de) * 2003-02-12 2012-12-27 Henkel Ag & Co. Kgaa Verfahren zur Herstellung eines blasgeformten Waschmittelkörpers
EP2504242A1 (fr) * 2009-11-23 2012-10-03 Rideau Machinery Inc. Améliorations apportées au thermoformage, par mouvement de rotation continu, de poches solubles
WO2014207286A1 (fr) 2013-06-28 2014-12-31 Kao Corporation, S.A. Composition détergente liquide
WO2015000970A1 (fr) 2013-07-03 2015-01-08 Basf Se Composition polymère solide obtenue par polymérisation d'un monomère contenant des groupes acides en présence d'un composé polyéther
US10323215B2 (en) 2013-07-03 2019-06-18 Basf Se Solid polymer composition obtained by polymerization of an acid group containing monomer in the presence of a polyether compound
US10655088B2 (en) 2013-07-03 2020-05-19 Basf Se Solid polymer composition obtained by polymerization of an acid group-containing monomer in the presence of a polyether compound
WO2017158002A1 (fr) 2016-03-16 2017-09-21 Basf Se Films polymères à action détergente et nettoyante, procédé pour les produire et leur utilisation
US10822443B2 (en) 2016-03-16 2020-11-03 Basf Se Washing- and cleaning-active polymer films, process for the production thereof and use thereof
US10703515B2 (en) 2016-08-08 2020-07-07 Cloud Packaging Solutions Llc Pouch forming mold configuration, method and pouch
US11148837B2 (en) 2016-08-08 2021-10-19 Mespack Cloud, Llc Pouch forming mold configuration, and method
US11858671B2 (en) 2016-08-08 2024-01-02 Mespack Cloud, Llc Pouch forming mold configuration, and method
US10974412B2 (en) 2016-11-15 2021-04-13 Cloud Packaging Solutions Llc Machine for cutting pouches with shaped perimeter edge, method and pouch
WO2018109201A1 (fr) 2016-12-16 2018-06-21 Basf Se Films multicouche à action détergente et nettoyante, procédé de production desdits films et utilisation correspondante
WO2018109200A1 (fr) 2016-12-16 2018-06-21 Basf Se Feuilles multicouches, leur procédé de fabrication et leur utilisation
WO2019238730A1 (fr) 2018-06-14 2019-12-19 Basf Se Procédé pour la production de contenants hydrosolubles pour l'ajout dosé de détergent
WO2020224962A1 (fr) 2019-05-03 2020-11-12 Basf Se Films hydrosolubles à topographie tridimensionnelle
WO2022017974A1 (fr) 2020-07-24 2022-01-27 Basf Se Film multicouche à base de caséine présentant des propriétés barrières améliorées

Also Published As

Publication number Publication date
DE60000684D1 (de) 2002-12-05
GB9906179D0 (en) 1999-05-12
CA2360805A1 (fr) 2000-09-21
DE60000684T2 (de) 2003-06-12
ZA200105054B (en) 2002-06-20
ES2184696T3 (es) 2003-04-16
EP1161368A1 (fr) 2001-12-12
RO118861B1 (ro) 2003-12-30
ATE226905T1 (de) 2002-11-15
TR200102518T2 (tr) 2002-01-21
AU2916100A (en) 2000-10-04
CZ20013334A3 (cs) 2002-03-13
BR0009048A (pt) 2002-01-15
CN1344210A (zh) 2002-04-10
EP1161368B1 (fr) 2002-10-30

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