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WO2025073632A1 - Barre de savon façonnée et procédé de fabrication de barres de savon façonnées pour un meilleur estampillage - Google Patents

Barre de savon façonnée et procédé de fabrication de barres de savon façonnées pour un meilleur estampillage Download PDF

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Publication number
WO2025073632A1
WO2025073632A1 PCT/EP2024/077462 EP2024077462W WO2025073632A1 WO 2025073632 A1 WO2025073632 A1 WO 2025073632A1 EP 2024077462 W EP2024077462 W EP 2024077462W WO 2025073632 A1 WO2025073632 A1 WO 2025073632A1
Authority
WO
WIPO (PCT)
Prior art keywords
soap
bar
face
mould
anyone
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.)
Pending
Application number
PCT/EP2024/077462
Other languages
English (en)
Inventor
Deepti BIJU
Chaitrali Dilip KANSE
Anushree Ratan PATIL
Ajay ROHILLA
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 Global IP Ltd
Unilever IP Holdings BV
Conopco Inc
Original Assignee
Unilever Global IP Ltd
Unilever IP Holdings BV
Conopco Inc
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 Global IP Ltd, Unilever IP Holdings BV, Conopco Inc filed Critical Unilever Global IP Ltd
Publication of WO2025073632A1 publication Critical patent/WO2025073632A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • C11D13/00—Making of soap or soap solutions in general; Apparatus therefor
    • C11D13/14—Shaping
    • C11D13/16—Shaping in moulds
    • 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
    • C11D13/00—Making of soap or soap solutions in general; Apparatus therefor
    • C11D13/14—Shaping
    • C11D13/18—Shaping by extrusion or pressing
    • 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
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/22—Carbohydrates or derivatives thereof
    • C11D3/222—Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin

Definitions

  • the invention relates to a soap bar shaped in such a way so as to allow better stamping.
  • the invention more particularly relates to solid shaped soap bar and a method of manufacturing soap bars.
  • soap bars are shaped in cuboidal, ovoid, cuboid, disk shaped and generally shaped in a way to rest on a flat bottom. These shapes have been successful over the years and appealed to the consumers. However, with change in formulations sometimes problems are faced with these shapes and the existing molds do not work.
  • Solid soap bars often incorporate structurants which are important for the soap hardness and other consumer desirable properties of the soap.
  • the structurants come with their own drawbacks, some enable high moisture content of soap and some like starch increase plasticity in a soap which means that the difference in soap composition may make in incompatible with the existing soap mold and the apparatus as the pressure to be applied for stamping may be different.
  • First aspect of the present invention provides a shaped soap bar of substantially cuboidal shape, wherein the bar comprises: a. a top face, b. a bottom face, c. at least two long side faces, d. at least two short side faces, e. at least four rounded corners around the top face, and f. a horizontal center-line dividing the soap bar into top part with the top face of the soap having thickness and a bottom part with the bottom face of the soap having thickness; wherein the horizontal center line has a bulge on the long side face, and wherein the angle formed between the bulge on the long side face and tangent drawn along the bulge in a direction perpendicular to the horizontal center line is between 5° to 30°.
  • Second aspect of the present invention provides a soap mould of substantially cuboidal shape for stamped a soap bar according to the first aspect, the mould comprising, a. a top cavity having a base and two long edges and two short edges for receiving the top part of the soap bar during the stamping process, b. a bottom cavity having a base and two long edges and two short edges for receiving the bottom part of the soap bar during the stamping process, wherein the four corners of the base of the top cavity are rounded, and wherein the long edges of the top and bottom cavity taper outwards away from the base at an angle in the range of 5° to 30°.
  • the inventors if the present invention were faced with a problem that when a structurant such as starch is used in the composition, the soap bars were not compatible with the mould die-set and due to plasticity of starch, there were always defects with the output soap bars, such as the soaps were not cut properly by the stamping machine and/or there was an extra mass of soap left in the finished output soap.
  • the inventors tried many ways to solve this problem, however, finally surprisingly they found that making certain changes in the shape of the soap bar, the soap bars could be stamped without any defects and with a good stamping speed.
  • Figure 3 shows the long side face (3A) of the shaped soap bar (SB) of the present invention.
  • wt% means weight % of the total weight of soap composition of the present invention.
  • the inventors if the present invention were faced with a problem that when a structurant such as starch is used in the composition, the soap bars were not compatible with the mould die-set and due to plasticity of starch, there were always defects with the output soap bars, such as the soaps were not cut properly by the stamping machine and/or there was an extra mass of soap left in the finished output soap.
  • a structurant such as starch
  • the inventors tried many ways to solve this problem, however, finally surprisingly they found that making certain changes in the shape of the soap bar, the soap bars could be stamped without any defects and with a good stamping speed.
  • the composition of the present invention is preferably used or used to prepare a shaped solid for example a bar.
  • the cleaning soap composition is preferably used or used to prepare a wash off product that generally has sufficient amount of surfactants included therein that it is used for cleansing the desired topical surface e.g. the whole body, the hair and scalp or the face. It is applied on the topical surface and left thereon only for a few seconds or minutes and washed off thereafter with copious amounts of water.
  • the present invention shaped soap bar (SB) of substantially cuboidal shape wherein the bar comprises: a top face, a bottom face, at least two long side faces, at least two short side faces, at least four rounded corners around the top face, a horizontal center-line dividing the soap bar into top part with the top face of the soap having thickness and a bottom part with the bottom face of the soap having thickness; wherein the horizontal center line has a bulge on the long side face, and wherein the angle formed between the bulge on the long side face and tangent drawn along the bulge in a direction perpendicular to the horizontal center line is between 5° to 30°.
  • the bulge along the long faces along the center line is the result of the tapering of the long edges of the top and the bottom cavity of the mould.
  • the bar comprises four rounded corners around the bottom face.
  • the ratio of corner radius (CR) to the thickness of top part (H1) is in the range of 0.35:1 to 5:1 , more preferably in the range of 0.4:1 to 4.5:1 and most preferably in the range of 0.5:1 to 4:1.
  • Preferred aspects of such soap compositions comprise at least 20 wt.%, preferably at least 25 wt.%, still preferably at least 30 wt.% and most preferably at least 35 wt.%, but typically not more than 58 wt.%, still preferably not more than 55 wt.%, still further preferably not more than 53 wt.%, still more preferably not more than 50 wt.%, and most preferably not more than 45 wt.% TFM by weight of the soap bar composition.
  • soap means salt of fatty acid.
  • the soap is soap of Cs to C24 fatty acids.
  • the soap may be obtained by saponification of oils, fats or fatty acids.
  • the fats or oils generally used to make soap compositions may be selected from tallow, tallow stearins, palm oil, palm stearins, soya bean oil, fish oil, castor oil, rice bran oil, sunflower oil, coconut oil, babassu oil, and palm kernel oil.
  • the fatty acids may be from coconut, rice bran, groundnut, tallow, palm, palm kernel, cotton seed or soyabean.
  • the fatty acid soaps may also be synthetically prepared (e.g. by the oxidation of petroleum or by the hydrogenation of carbon monoxide by the Fischer-Tropsch process). Resin acids, such as those present in tall oil, may also be used. Naphthenic acids may also be used.
  • the soap composition generally comprises electrolyte and water.
  • Electrolytes as per this invention include compounds that substantially dissociate into ions in water. Electrolytes as per this invention are not an ionic surfactant. Suitable electrolytes for inclusion in the soap making process are alkali metal salts. Preferred electrolytes include sodium sulfate, sodium chloride, sodium citrate, potassium chloride, potassium sulfate, sodium carbonate and other mono or di or tri salts of alkaline earth metals, more preferred electrolytes are sodium chloride, sodium sulfate, potassium chloride and especially preferred electrolytes are sodium chloride and sodium sulfate and combinations thereof. For the avoidance of doubt is clarified that the electrolyte is a non-soap material. For the avoidance of doubt, it is clarified that the electrolyte is a non-soap material.
  • the present invention comprises an electrolyte in the range of 0.1 to 5 wt% electrolyte by weight of the extruded soap bar composition, more preferably 1 to 4 wt% and most preferably 1 .5 to 3.5 wt% by weight of the soap bar composition.
  • the soap bar composition has a structurants and preferably an organic structurants such as starch, which may also be referred as filler.
  • the organic filler is a starch and preferably the starch is a native starch, pregelatinized starch, converted starch or its mixture.
  • the present invention provides a soap mould of substantially cuboidal shape for stamped a soap bar according to the first aspect, the mould comprising, a top cavity having a base and two long edges and two short edges for receiving the top part of the soap bar during the stamping process, a bottom cavity having a base and two long edges and two short edges for receiving the bottom part of the soap bar during the stamping process, wherein the four corners of the base of the top cavity are rounded, and wherein the long edges of the top and bottom cavity taper outwards away from the base at an angle in the range of 5° to 30°.
  • the mould could be of any material used in the industry, it is preferred that the mould is of metal.
  • the base of the cavity mould could be designed such that a logo of the soap or any indica is imprinted on the top or bottom face of the soap bar. It is preferred that a logo is designed on the base of the top cavity or bottom cavity of the soap, more preferably base of the top cavity. It is further preferred that the base of the top or bottom cavity is designed to provide dents, indentations, or grooves or dimples on the top or the bottom face of the soap, more preferably such indentations are provided on the base of the bottom cavity.
  • the corners of the base of the bottom cavity are rounded and further preferred that the rounded corners have a corner radius in the range of 3mm to 20mm, more preferably 3.5 to 18 mm, and most preferably between 4 to 15mm.
  • the long edges of the top and bottom cavity taper outwards away from the base at an angle in the range 5° to 30°, more preferably between 7° to 25° and most preferably between 10° to 22°.
  • the present invention also provides use of mould according to the second aspect for making soap bars comprising starch stamped at least at a rate of 100 bars per minute at factory scale.
  • the present invention provides a method of manufacture of soap bar according to the first aspect using mould according to the second aspect, the method comprising providing a soap billet, providing a mould according to the second aspect, placing the billet in between the top cavity and the bottom cavity of the soap mould for stamping the soap to obtain the soap according to the first aspect.
  • a billet refers to the pieces after cutting of a log of soap and a bar refers to the piece after it has been stamped from the billet.
  • the soaps are stamped at least at a rate of 100 bars per minute and preferably 200 bars per minute at factory scale.
  • soap billets are extruded and then stamped to form soap bars of the present invention.
  • Figure 1- shows a perspective view of the shaped soap bar (SB) of the present invention a top face (1), a bottom face (2), at least two long side faces (3A, 3B), at least two short side faces (4A, 4B), at least four rounded corners (1A, 1 B, 1C and 1 D) around the top face (1), a horizontal center-line (HCL), wherein at least the top face (1) is substantially flat; and wherein the horizontal center line (HCL) has a bulge on the long side face (3A, 3B).
  • Figure 2 shows the top face (1) of the shaped soap bar (SB) with the round four rounded corners (1A, 1 B, 1C and 1 D) around the top face (1) and the corner radius (CR) depicted in an enlarged circle.
  • Figure 3 shows the long side face (3A) with centre point of arch (CPA) and horizontal center line (HCL) dividing the soap bar into top part (TH) with the top face of the soap (1) having thickness (H1) and a bottom part (BH) with the bottom face (2) of the soap having thickness (H2).
  • the figure also shows thickness (H3) between the center point of the arch (CPA) and the horizontal center line (HCL).

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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)
  • Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Emergency Medicine (AREA)
  • Detergent Compositions (AREA)

Abstract

L'invention concerne une barre de savon façonnée de forme sensiblement cuboïde, la barre comprenant : une face supérieure, une face inférieure, au moins deux faces latérales longues, au moins deux faces latérales courtes, au moins quatre coins arrondis autour de la face supérieure, une ligne centrale horizontale divisant la barre de savon en partie supérieure avec la face supérieure du savon et une partie inférieure avec la face inférieure du savon; la ligne centrale horizontale présentant un renflement sur la face latérale longue, l'angle formé entre le renflement sur la face latérale longue et la tangente tracée le long du renflement dans une direction perpendiculaire à la ligne centrale horizontale étant compris entre 5° et 30°.
PCT/EP2024/077462 2023-10-06 2024-09-30 Barre de savon façonnée et procédé de fabrication de barres de savon façonnées pour un meilleur estampillage Pending WO2025073632A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
IN202321067279 2023-10-06
IN202321067279 2023-10-06
EP24162946 2024-03-12
EP24162946.8 2024-03-12

Publications (1)

Publication Number Publication Date
WO2025073632A1 true WO2025073632A1 (fr) 2025-04-10

Family

ID=92895524

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2024/077462 Pending WO2025073632A1 (fr) 2023-10-06 2024-09-30 Barre de savon façonnée et procédé de fabrication de barres de savon façonnées pour un meilleur estampillage

Country Status (1)

Country Link
WO (1) WO2025073632A1 (fr)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE633018A (fr) * 1963-05-29 1963-10-21 Anciaux Henri T. R.A. Brique de savon
CA1141256A (fr) * 1979-03-15 1983-02-15 Hans W. Hornig Pain de savon, et methode de fabrication connexe
US4879063A (en) * 1987-06-05 1989-11-07 The Dial Corporation Process for making translucent soap bars
WO1991013970A1 (fr) * 1990-03-07 1991-09-19 Rourke Peter William O Pain de savon ameliore
CA1291312C (fr) * 1987-06-30 1991-10-29 Yvon Roussel Dispositif de mise en forme de pains de savon
US5087188A (en) * 1987-11-18 1992-02-11 Staver Robert B Dies for forming soap with attached member
WO1993006982A1 (fr) * 1991-09-30 1993-04-15 Staver Robert B Savon pourvu d'un element de retenue, dispositif et procede de fabrication dudit savon
WO1996014390A1 (fr) * 1994-11-04 1996-05-17 Demetrios Georgiades Savon
US6554246B1 (en) * 1997-05-09 2003-04-29 Lever Brothers Company, Division Of Conopco, Inc. Casting of shaped soft solid articles
WO2009065766A2 (fr) 2007-11-21 2009-05-28 Unilever Plc Pains de détergent innovants

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE633018A (fr) * 1963-05-29 1963-10-21 Anciaux Henri T. R.A. Brique de savon
CA1141256A (fr) * 1979-03-15 1983-02-15 Hans W. Hornig Pain de savon, et methode de fabrication connexe
US4879063A (en) * 1987-06-05 1989-11-07 The Dial Corporation Process for making translucent soap bars
CA1291312C (fr) * 1987-06-30 1991-10-29 Yvon Roussel Dispositif de mise en forme de pains de savon
US5087188A (en) * 1987-11-18 1992-02-11 Staver Robert B Dies for forming soap with attached member
WO1991013970A1 (fr) * 1990-03-07 1991-09-19 Rourke Peter William O Pain de savon ameliore
WO1993006982A1 (fr) * 1991-09-30 1993-04-15 Staver Robert B Savon pourvu d'un element de retenue, dispositif et procede de fabrication dudit savon
WO1996014390A1 (fr) * 1994-11-04 1996-05-17 Demetrios Georgiades Savon
US6554246B1 (en) * 1997-05-09 2003-04-29 Lever Brothers Company, Division Of Conopco, Inc. Casting of shaped soft solid articles
WO2009065766A2 (fr) 2007-11-21 2009-05-28 Unilever Plc Pains de détergent innovants

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