CA2001717A1

CA2001717A1 - Method for the production of tablets of soap

Info

Publication number: CA2001717A1
Application number: CA 2001717
Authority: CA
Inventors: Cornelis Van Buuren
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-10-28
Filing date: 1989-10-27
Publication date: 1990-04-28
Also published as: NL8802654A; EP0366209A1

Abstract

ABSTRACT

A method for the production of tablets of soap, said tablets of soap being made up of several layers of soap, in a mould. This mould comprises two or more parts with a filling aperture. The mould is filled with a soap which is liquid above a specific temperature which is above 40 degrees Celsius, and which is solid below a temperature which lies below the afore-mentioned specific temperature;
before the parts are combined to form the mould, one or more parts of the mould are filled with a layer of soap at a temperature at which the soap is liquid. This soap layer is then cooled to a temperature, following which the mould is closed and the remaining space is filled up with a soap whose temperature is above the melting point of said soap, each soap filling having a desired composition. The preference is an object, such as an illustration, a free gift article, a logo or the like, is placed on the last layer of soap formed, after one or more layers is placed in one of the mould parts and cooled to a desired temperature, and before the mould parts are combined and the remaining space filed up with soap.

Description

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Method for the production of tablets of soap.

The inventlon relates to a method for the production of a tablet of soap, sald tablets of soap belng made up of several layers of soap. Tablets of soap whlch are used for cleanslng, for example, the skln are generally known. In general, these tablets are made by presslng them in a mould.
It ls also ~nown to cast the tablets of soap, in whlch case the soap must be liquld at a temperature whlch lles above the temperature at whlch sald tablets of soap are to be used.
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The alm of the lnventlon i8 a method for the productlon of -;
tablets of soap, ln whlch a tablet of soap ls made up of layers of soap, ln whlch each layer can be of a dlfferent colour.
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Thls alm ls achleved accordlng to the lnventlon by that ln a mould, comprlslng two or more parts whlch when comblned form a mould with a fllllng aperture, sald fllllng aperture belng . . .
used to permit the fllllng of the remalnlng space ln the mould wlth a soap whlch ls llquld above a speclflc tempera- ;;;
ture whlch is above 40 degrees Celslus, and whlch ls solld ;
below a temperature whlch lles below the above-mentloned speclflc temperature, whlle before the parts of the mould are comblned one~or more parts of the mould are fllled wlth a soap at a temperature at whlch lt ls llquid, thls soap layer ls then cooled to a temperature whlch lles below the above-mentloned speclflc temperature, followlng whlch the ;~
mould ls closed and the remalnlng space ls fllled up wlth a ' soap whose temperature lles above the meltlng polnt of sald ; ~ ' soap, each soap fllllng havlng a deslred compositlon. Thls process means that tablets of soap which are made up of several layers, and in whlch each layer can be of a dif-ferent desired colour, can be produced. This can greatly enhance the external appearance of the tablet of soap, most ~n~171.7 :

certainly lf the tablet of soap ls packed ln a transparant piece of packaging materlal such as cellophane or trans-parant plastic.

h speclal effect ls obtained lf another posslble process ls used. Thls other posslble process ls that after one or more layers are placed ln one of the mould parts and cooled to a deslred temperature, and before the mould parts are combln-ed, an ob~ect such as an lllustratlon, free glft artlcle, ;
logo or the llke, ls placed on the last layer of soap for- -;
med. Accordlng to this process, small ob~ects can be placed ln the soap durlng the productlon process. Thls placlng of small ob~ects ln the soap ls all the more appeallng slnce soaps whlch are vlrtually translucent or transparant can now be produced, wlth the result that these ob~ects are vlslble from the outslde of the soap, and they therefore dlffer from known tablets of soap whlch do not have the property of belng transparant.

The inventlon wlll be explalned ln greater detall wlth reference to the drawlng. In the drawlng: ;
Flg. 1 shows a cross-sectlon of a mould ln whlch a tablet of soap ls moulded ln layers accordlng to the process of the lnventlon;
Fig. 2 ls a cross-sectlon of a tablet of soap accordlng to the lnventlon, contalnlng an ob~ect.

Flg. 1 shows a mould 1, comprising two parts 2 and 3, ln whlch a tablet of soap 4 is moulded. A layer of soap 5 was flrst poured lnto the part 2 of the mould 1 and, after thls layer 5 had cooled to the extent that thls soap layer 5 was no longer llquld, a new layer 6 of the same type of composl-tlon as that of the first layer was poured ln. Such a flrst layer 5 wlll then not be able to heat up so far that lt becomes completely llquid again, due to the fact that lt takes qulte a large amount of energy to convert a substance from the solld phase to the liquld phase; on the other hand, if the temperature difference between the two layers ls not ;

~n ~ ~ 7~ 7 . , too great when the new layer ls poured in, the two layers will adhere well, because the surface layer against which the new soap layer is poured wlll then melt sllghtly, especlally slnce a soap of approxlmately the same composi-tlon, ln whlch, for example, only the colour is allways changed by addlng a dlfferent dye, ls used for all layers.
In the end, the last layer can be applled by closing the mould and fllllng up the mould through the fllllng aperture 7.
'' Flg. 2 shows a cross-sectlon through a tablet of soap, ln whlch the tablet of soap comprlses a number of layers and contalns an ob~ect 8. Thls ob~ect ls lnserted by placlng lt on a layer after the latter has cooled down sufflclently, and subsequently applylng the other layers of soap~ This `
placlng of logos or other small ob~ects in a tablet of soap i9 now very attractlve because soaps whlch are vlrtually transparant can now be made, whlch means that these ob~ects are very easy to see from the outslde. ~
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Claims

1. A method for the production of tablets of soap, said tablets of soap being made up of several layers of soap, wherein in a mould, comprising several parts which when combined form a mould with a filling aperture, said filling aperture being used to permit filling of the remaining space in the mould with a soap which is liquid above a specific temperature which is above 40 degrees Celsius, and which is solid below a temperature which lies below the above-men-tioned specific temperature, while before the parts are combined to form the mould, one or more parts of the mould are filled with a layer of soap at a temperature at which the soap is liquid, this soap layer is then cooled to a temperature which lies below the above-mentioned specific temperature, following which the mould is closed and the remaining space is filled up with a soap whose temperature is above the melting point of said soap, each soap filling having a desired composition.

2. A method according to claim 1 wherein one or more parts of the mould are successively filled with several layers of soap, each layer of soap of a desired composition, and in that each new layer of soap is applied at a temperature which lies above the above-mentioned specific temperature, and only after the layer of soap on which the new layer is poured has cooled down so far that this cooled-down layer is at a temperature below the above-mentioned specific tempera-ture of said soap layer.

3. A method according to claim 1, wherein after one or more layers is placed in one of the mould parts and cooled to a desired temperature, and before the mould parts are combined, an object, such as an illustration, a free gift article, a logo, is placed on the last layer of soap formed.

4. A method according to claim 2, wherein that after one or more layers is placed in one of the mould parts and cooled to a desired temperature, and before the mould parts are combined, an object, such as an illustration, a free gift article, a logo, is placed on the last layer of soap formed.