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
  • C11D13/10—Mixing; Kneading
• • 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
  • C11D17/02—Floating bodies of detergents or of soaps

Definitions

• the present invention relates to a low density soap, more particularly a floating toilet soap and its manufacturing process.
• a floating toilet soap does not drip, remains on the surface of the water and therefore has a practical advantage, for example when a user taking a bath searches for the soap in the bathtub or when washing in a surface. open water like a lake or river.
• the soap, raw or coming from a finished toilet soap is ground and / or kneaded and added with 3 to 30% of water, preferably from 5 to 25%, more preferably from 10 to 20% by volume, in a suitable container.
• the mixture is brought to a temperature of 40 to 150 ° C., preferably from 60 to 100 ° C., for a period depending on the kneading and which can vary from a few minutes to several hours, typically 1 hour 30 minutes, maintaining kneading and leaving water evaporate.
• the resulting paste which is substantially swollen is removed from the container, then cooled in air, in a refrigerator, or in a mold.
• the dough, possibly solidified, can be advantageously reworked by introducing it in a classic soap extruder. However, the use of excessive compression in the extruder should be avoided.
• the extruder does not indeed include a cone and / or grid at the outlet.
• the extruder is not cooled and operates under normal atmospheric pressure.
• the head of the extruder after the Archimedes screw, simply has a shrinking chamber heated to a temperature of 40 to 120 ° C, preferably around 100 ° C.
• a die can be provided in the form of an additional tubular part of constant cross section, of dimensions corresponding to the desired final dimensions of the bung and of the soap bars resulting therefrom, fixed at the outlet, heated tubular part from which the hot bung will come out.
• the additional piece can measure between 10 and 20 cm.
• the process does not call upon any chemical or physical operation foreign to the operations normally carried out in soap making.
• the process can obviously be adapted to continuous production, without fundamentally modifying the equipment currently used by a soap factory.
• the mixing time and the temperature simply have to be adapted according to the material.
• the hot mixing step is preferably carried out in the open air. Overpressure or depression at this stage can be envisaged but is not necessary to obtain the result according to the invention.
• a gas other than air can be used if the mixing step is carried out in an enclosed space into which said gas has been introduced. Less preferably, the gas could also be introduced directly into the dough, for example by injection.
• the floating soaps according to the invention have an external appearance identical to conventional toilet soaps. They can be molded and receive various imprints in relief by stamping without any difficulty.
• the internal texture is effectively aerated, without however the presence of visible bubbles or discrete cells.
• the appearance is that of a solid snow foam with a coarse texture.
• the texture is however essentially uniform from the center to the periphery.
• the texture is preferably not layered by pressing, which would be an indication of a defective step in the process.
• the density is estimated to be greater than 0.9, in general even greater than 0.95.
• Additional ingredients may be present in the starting soap, or - 6 -
• a conventional 200 liter mixer (Mazzoni) is used, two Z-shaped arms, previously provided with a means of heating by circulation of water at 90-100 ° C.
• the mixing is carried out at a blade rotation speed of approximately 1 to 2 rotations per second, at a temperature of approximately 85 ° -100 ° C.
• the paste is then visibly swollen, the level having risen appreciably by about 10 centimeters. in the tank At the end of mixing, the dough can no longer stick to touch. This last characteristic can be advantageously used as an end of mixing test.
• the dough is transferred to u or more containers.
• the contents of the containers are spread on a plastic sheet spread on the ground and the dough is cooled and broken into pieces of about 20 cm in size, preferably 5 to 10 cm, thus allowing residual steam to escape .
• the pieces are introduced into a hopper supplying a conventional extruder of soap (Mazzoni, screw of about 1.5 m) without there being cooling of the body of the extruder.
• the extruder is not provided with a cone or a grid, the head, in the form of a narrowing chamber, being however heated by an oil bath to approximately 100 ° C.
• an additional tubular element of 15 cm has been adapted, of constant rectangular section (6 ⁇ 4 cm) heated by an electrical resistance, intended to smooth and facilitate the sliding of the external surface of the bung when that - it comes out of the extruder.
• the outgoing bung does not collapse and passes on a rolling bench then on a cutting table known per se (Mazzoni) and the resulting pieces are then pressed in a conventional manner by stamping, the operation however being carried out at a temperature of about -10 ° C.
• the toilet soap obtained (115 g) has a smooth surface similar to a normal soap which under analogous manufacturing conditions would weigh approximately 120 g, with a stable decorative relief on its upper face, the blue color being mottled with whitish areas.
• the density is greater than 0.9 but less than 1 g / cm3.
• the soap dissolves essentially at the same rate as a normal soap and keeps the same consistency. It will be understood that the different parameters are interdependent and will vary depending on the type of soap paste used, the secondary ingredients and the characteristics of the mixer and the extruder. These parameters will be easily optimized by those skilled in the art to adapt them to any particular circumstances.

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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)

Applications Claiming Priority (3)

Publications (1)

Family

ID=3888789

Family Applications (1)

Country Status (2)

Family Cites Families (13)

• 1996
  • 1996-02-19 EP EP96904674A patent/EP0809688A1/de not_active Withdrawn
  • 1996-02-19 WO PCT/BE1996/000016 patent/WO1996025480A1/fr not_active Ceased

Non-Patent Citations (1)

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