US3663671A - Process for the continuous manufacture of marbelized soap bars - Google Patents

Process for the continuous manufacture of marbelized soap bars Download PDF

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Publication number
US3663671A
US3663671A US818756A US3663671DA US3663671A US 3663671 A US3663671 A US 3663671A US 818756 A US818756 A US 818756A US 3663671D A US3663671D A US 3663671DA US 3663671 A US3663671 A US 3663671A
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United States
Prior art keywords
soap
screw
plodder
dye
marbelized
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Expired - Lifetime
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US818756A
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English (en)
Inventor
Reinhold Walter Meye
Gunter Thor
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Henkel AG and Co KGaA
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Henkel AG and Co KGaA
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Publication date
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    • 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
    • C11D13/08—Colouring, e.g. striated bars or striped bars, or perfuming
    • 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

Definitions

  • This invention relates to a continuous process for manufacturing soap bars having a marbelized appearance.
  • German Pat. 429,937 and Austrian Pat. 95,947 there have been described apparatus and methods for use in the extrusion of plastic compositions having a variegation or marbling in the interior thereof or on their surfaces.
  • German Pat. 429,937 a conical hollow mandrel equipped with numerous nozzles in a spiral arrangement is inserted into the extrusion nozzle and the colored material is then forced into the ground material by means of a second extrusion press.
  • an object of this invention is to provide a process of producing soap cakes or bars which are entirely marbelized both on their surfaces and in their interior, and which have an attractive appearance that unmistakably identifies the soap, not only before it is put to use, but also after any amount of use.
  • Another object of this invention is to provide a process for more simply and economically producing soap cakes or bars which are entirely marbelized both on their surfaces and in their interior and which have an attractive appearance and that unmistakably identifiies the soap, not only before it is put to use, but also after any amount of use.
  • marbelized soap bars can be continuously manufactured using an ordinary screw-type soap plodder equipped with a conical nozzle and introducing the dye solutions into the soap mass through at least two feeding means located in the jacket of the plodder, at least one feeding means being so arranged that it is separated from the input end of the screw by at least one spiral of the screw and is located at the third to seventh screw spiral from the discharge end of the screw, and at least one additional feeding means is disposed at the first to third screw spiral from the discharge end of the screw, the spacing between the two feeding means amounting to at least one screw spiral.
  • the process of the invention can be carried out with soap plodders of conventional construction. It has been found to be advantageous to use plodders in which the screw has 5 to 15, and preferably 7 to 12 spirals. As the mixing of the soap mass inside of the plodder increases as the pressure increases, it is advantageous to control the presure in the plodder so that it does not rise above 50 kg/cm. and preferably amounts to from 3 to 30 k-g./cm.
  • the pressure is dependent on the one hand on the cross section of the nozzle opening, and on the other hand it can be varied by means of a perforated strainer disk which is disposed at the discharge end of the screw and through which the soap mass is forced.
  • strainer disks are those in which the ratio between the open area and the closed area amounts to between 1:2.5 and 1:45.
  • Such strainer disks are constructed so as to have opening diameters of at least 5 mm. and preferably of from 8 to 20 mm.
  • the temperature prevailing in the soap plodder should be maintained under 60 C. if possible. This in some cases necessitates the cooling of the plodder.
  • plodders of conventional construction are provided with cooling jackets.
  • the plodding is carried out with a soap bar temperature of 30 to 50 C.
  • the dye is introduced into the soap through at least two feeding means.
  • the first feeding means according to the present invention, is located so that the soap entering the plodder has passed at least one screw spiral before it comes into contact with the dye. After the initial dye introduction the soap passes through three to seven more screw spirals before it is discharged from the screw.
  • the area in which the first feeding means is located shall be referred to hereinafter for the sake of brevity as the middle area. Any number of feeding means can be located in the middle area, although from 1 to 3 feeding means have been found to be entirely sufficient for the purpose of the instant invention.
  • the dye solution fed into the middle area serves principally for coloring the inner portions of the soap bar. The amount of dye introduced at this point should amount to from 30 to of the total quantity of dye that is to be used.
  • the remaining dye solution is introduced into the soap in the so-called end area which is located at the first to third scre'w spiral from the discharge end of the screw.
  • the end area is separated from the middle area by at least one, and preferably by 2 to 4 screw spirals.
  • the dye solution introduced into the end area serves mainly for coloring the marginal portions of the soap bar.
  • the number of feeding means located in this zone amounts preferably to from 2 to 6, although any desired number of such feeding means can be used.
  • the feeding means can be spaced apart from one another as desired and distribution over the periphery of the plodder. Alternatively they can also be located in a star-like arrangement, for example.
  • the marbling effect achieved is sharp-edged. If the dye solution is delivered in the area of the second to third spiral, from the discharge end of the screw, the colors blend softly into one another. Finally, differentcolored solutions can be fed into the various areas and feeding means in order to achieve numerous attractive color combinations. Another possibility for achieving variation is to color the soap mass itself before it is delivered to the plodder.
  • Dyes commonly used in the soap industry can be used to color the soap. It is desirable to add thickening agents to the dye solutions in order to increase their viscosities. Suitable thickening agents are, for example, cellulose derivatives, such as cellulose glycolate or methyl cellulose, alginates, starch, hydrolyzed proteins, polyvinyl alcohol, polyvinyl pyrrolidone, polyacrylates, polyglycols and other polymers of natural or synthetic origin which can be dissolved in water or can be made to swell in water.
  • cellulose derivatives such as cellulose glycolate or methyl cellulose, alginates, starch, hydrolyzed proteins, polyvinyl alcohol, polyvinyl pyrrolidone, polyacrylates, polyglycols and other polymers of natural or synthetic origin which can be dissolved in water or can be made to swell in water.
  • the soap bar following its removal from the dye can be cut into cakes and pressed in the customary manner.
  • FIG. 1 shows a longitudinal section
  • FIG. 2 shows a cross section of the apparatus.
  • the device consists of a cylindrical plodder jacket (A), a cooling jacket (B), a soap inlet (C), a screw (D), a strainer disk (E) and an extrusion nozzle (F).
  • the first dye feeding means (G) is located in the middle area (I) and the second feeding means (H, H, H") are located in the end area (K) of the plodder.
  • EXAMPLE A plodder of conventional construction (Manufactured by Mazzoni, of Busto Arsizio, Italy) of 31.0 cm. internal diameter having a screw of 9 spirals and a length of 140 cm. was used.
  • One of the dye solution feeding means was loacted at the 5th spiral from the discharge end.
  • Three additional feeding means were arranged at the second spiral from the discharge end of the screw at angles of 120 to one another in a star arrangement.
  • the feeding means were connected by hoses to proportioning pumps and pressure gauges for indicating the plodder pressure.
  • a perforated strainer disk having a diameter of 31.0 cm., corresponding to a cross section of 754.8 cm.
  • Three suitable disks were available:
  • the soap bar which was discharged from the plodder was cut and pressed into cakes.
  • the scraps from the stamping were collected and then used for tinting fresh soap, being delivered for this purpose to a mixer from which it passed through a homogenizer back into the plodder.
  • Process for the continuous manufacture of marbelized soap bars utilizing a soap plodder provided with a conical die which comprises conveying a soap mass at a temperature not exceeding 60 C. through a plodder by means of a screw having from 5 to 15 screw threads, introducing dye solutions into the soap mass through at least two inlets arranged in the jacketing for the plodder, at least one of said inlets being arranged so that it is spaced from the input end of the screw by at least one screw thread and from the outlet end of the screw by three to seven screw threads, and at least one additional inlet arranged at the first to third screw thread from the discharge end of the screw, the distance between the two inlets amounting to at least one screw thread, maintaining the pressure in said plodder at a value not exceeding 3 to 30 kg./cm.
  • Process according to claim 1 which comprises maintaining the temperature in said soap mass at a value not exceeding 30 to 50 C.
  • Process according to claim 1 which comprises introducing 30 to of the total amount of the dye to be introduced through at least one inlet arranged at the third to seventh screw threads from the inlet end of said screw.
  • Process according to claim 1 which comprises introducing 20 to 70% of the total amount of the dye to be introduced through two to six inlets arranged at the first to third screw threads from the outlet end of said screw.
  • Process according to claim 1 which comprises introducing 10 to 40 g. of dye per kg. of soap.

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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)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
US818756A 1968-05-02 1969-04-23 Process for the continuous manufacture of marbelized soap bars Expired - Lifetime US3663671A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681767353 DE1767353B2 (de) 1968-05-02 1968-05-02 Verfahren zur kontinuierlichen herstellung von farbig marmorierten seifenstraengen

Publications (1)

Publication Number Publication Date
US3663671A true US3663671A (en) 1972-05-16

Family

ID=5699319

Family Applications (1)

Application Number Title Priority Date Filing Date
US818756A Expired - Lifetime US3663671A (en) 1968-05-02 1969-04-23 Process for the continuous manufacture of marbelized soap bars

Country Status (9)

Country Link
US (1) US3663671A (de)
JP (1) JPS5035927B1 (de)
AT (1) AT295005B (de)
BE (1) BE732385A (de)
CH (1) CH518359A (de)
DE (1) DE1767353B2 (de)
ES (1) ES366695A1 (de)
FR (1) FR1600543A (de)
NL (1) NL154266B (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3832431A (en) * 1969-11-10 1974-08-27 Lever Brothers Ltd Process for making marbleized soap or detergent
US3940220A (en) * 1970-12-29 1976-02-24 Colgate-Palmolive Company Method and equipment for the manufacture of variegated detergent bars
US4011170A (en) * 1974-07-10 1977-03-08 John Harlan Pickin Marbled detergent bars
US4090829A (en) * 1974-11-05 1978-05-23 Colgate-Palmolive Company Striated soap bar forming apparatus
US20080214430A1 (en) * 2007-03-01 2008-09-04 Conopco, Inc., D/B/A Unilever Extruded artisan soap having inner vein
WO2009003787A1 (en) * 2007-06-29 2009-01-08 Unilever N.V. Process and apparatus for making marbled detergent bars

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2455982C2 (de) * 1974-11-27 1982-04-08 Henkel KGaA, 4000 Düsseldorf Verfahren und Vorrichtung zur Herstellung marmorierter Seifenstücke
ZA897714B (en) * 1988-11-02 1991-06-26 Colgate Palmolive Co Detergent bar with improved foam and skin feel

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3832431A (en) * 1969-11-10 1974-08-27 Lever Brothers Ltd Process for making marbleized soap or detergent
US3940220A (en) * 1970-12-29 1976-02-24 Colgate-Palmolive Company Method and equipment for the manufacture of variegated detergent bars
US4011170A (en) * 1974-07-10 1977-03-08 John Harlan Pickin Marbled detergent bars
US4090829A (en) * 1974-11-05 1978-05-23 Colgate-Palmolive Company Striated soap bar forming apparatus
US20080214430A1 (en) * 2007-03-01 2008-09-04 Conopco, Inc., D/B/A Unilever Extruded artisan soap having inner vein
US7683019B2 (en) 2007-03-01 2010-03-23 Conopco, Inc. Extruded artisan soap having inner vein
US7858571B2 (en) 2007-03-01 2010-12-28 Conopco, Inc. Extruded artisan soap having inner vein
WO2009003787A1 (en) * 2007-06-29 2009-01-08 Unilever N.V. Process and apparatus for making marbled detergent bars

Also Published As

Publication number Publication date
ES366695A1 (es) 1971-03-16
DE1767353A1 (de) 1972-02-03
DE1767353C3 (de) 1973-11-22
AT295005B (de) 1971-12-27
NL6905250A (de) 1969-11-04
DE1767353B2 (de) 1973-04-19
JPS5035927B1 (de) 1975-11-20
CH518359A (de) 1972-01-31
BE732385A (de) 1969-10-30
FR1600543A (de) 1970-07-27
NL154266B (nl) 1977-08-15

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