FIELD OF THE INVENTION
The present invention relates to a soap de-molding system. More particularly, the present
invention relates to an automated system and a method of de-moulding of soap having simulating
the peeling action , chopping the runner of the solid casting (soap tablets) with a blunt blade and
mechanical action of twisting the flexible moulds to ensure removal of fresh soap bars which
could be slightly sticking on the mould surface.
BACKGROUND AND PRIOR ART OF THE INVENTION
Soap making can be broadly divided into: a) Stamping method and b) Casting Method. Casting
method involves filling of molten soap into moulds/ cavities. The moulds are subjected to
cooling operation wherein the melt takes the shape of the cavity. Cavity can be either in the form
of a bulk casted candle (which can be cut and stamped further to impart desired logo and features
to the shape) or final finished form of the soap tablets. Second option provides intricate shape
and superior surface finish to the finished soaps (particularly when a closed two-part mould is
employed). Though, this second option is inherently not suited for the high throughput
processing speeds. Thus, soap casting with closed-flexible moulds is used in handmade-
homemade soaps wherein post solidification manual twisting of flexible moulds is done to
displace the individual soap cavities. Soap tablets are then given finishing touch like chopping
off the runner, removing flashes etc.
US 6554246 (herein referred to as '246) discloses a mould for casting shaped, solid detergent
articles is provided. The mold is made of two rigid complimentary dies which upon engagement
define a cavity corresponding to a desired shape of the cast article, wherein the engaged dies
form a reservoir which on one side is open to receive cast melt and on another side is open to the
cavity.
In present case the system has flexible 2-part molds rather than rigid dies. The two parts of the
mold being the male-female parts with requisite grooves and projections to fit closely and define
a leak-free cavity when poured with a liquid with water-like viscosity
In present invention, the articles to be casted are soft (even post de-molding) and need to be
handled during cooling in a sufficiently rigid mould which is flexible enough for twisting and
displacing the casted product
Further, the ratio of volume of reservoir to that of cavity could be less than 5%
US20020070481 (herein referred to as '481) discloses a one piece mold, having a cavity into
which fluid material is fed through an input port, to result in a seamless, cast icon. At least the
input port portion of the mold is sufficiently elastic so that it can be stretched open: (a) by the
hardened icon, when positive pressure is applied into the cavity, remote from the input port; (b)
by negative pressure applied around the mold, at least proximate to the input port; or (c) by a
combination of such applied positive and negative pressures; to demold through the input port,
the then hardened icon. An endless conveyor system carries the molds past several stations,
including an icon demolding station, which applies the mold stretching pressure for the icon
domolding. The applied pressure(s) does not exceed the elastic capability of the mold, so that it
can be reused repeatedly, without deterioration as to form and shape of the icon.
De-molding apparatus mentioned in 481 is specifically for a one-piece mold which is sufficiently
elastic so as to stretch on application of air pressure.
Molds in 481 have elastic portion which can be stretched so as to allow the exit passage for the
icons.
De-molding operation does not depends on enlarging the size of the input passage by application
of pressure. It entails simulation of manual peeling of the two-part flexible molds which can be
twisted for displacing the adhered castings.
Solution to the above-mentioned problem has been envisaged as mechanical simulation of
peeling and twisting actions. Mechanical components inducing motion- like rotary cylinders,
stoppers, grippers, sensors etc- were employed on a table-top system integrated with conveyors
for the purpose.
OBJECTS OF THE INVENTION
One object of the present invention is to overcome the disadvantages / drawbacks of the prior art.
A basic object of the present invention is to provide a soap de-molding system with flexible
closed mould parts.
Another object of the present invention is to provide a soap de-molding system performing
automated demoulding during the soap casting process in closed flexible moulds wherein the
steps of mould opening, runner chopping and tablet withdrawal are involved .
Yet another object of the present invention is to provide a soap de-molding method with peeling,
chopping and twisting action.
Yet another object of the present invention is to provide high speed demoulding method of
casting in closed moulds for manufacturing intricately shaped finished products which are
relatively soft when taken out of the mould
These and other advantages of the present invention will become readily apparent from the
following detailed description taken in conjunction with the accompanying drawings.
SUMMARY OF THE INVENTION
According to one of the aspect of the present invention there is provided a soap de-molding
system, said system comprising:
a closed mould having a top portion and a bottom portion adapted to store soap tablets , said
mould comprises plurality of grooves;
a mould opening means for peeling action comprises :
a lifting/arm means having finger like grooves fixed on a mobile arm in said top portion for
holding and lilting;
a clamp means fixed with said bottom portion to hold bottom half;
a piston cylinder arm for vertical movement; and
a pressing rod operatively connected with said clamp means adapted to ensure that the tablets
remain in bottom half;
a neck cutting means for chopping of neck operatively connected with said mould opening
means, said neck cutting means comprises :
a stopper means with sensors placed on said bottom portion of mould adapted to stop said mould
and ensure straight tine orientation; and
a cutter means with profiled blades to chop the runner from soap tablet and providing a curved
profile to the cut portion inline with the tablet shape;
a withdrawal means operatively connected with said neck cutting means for simulating manual
twisting action to displace castings from moulds, said withdrawal means comprises :
a gripper frame means with projected fingers fixed on said bottom portion of mould ;
a pair of rotary cylinders for overturning twisting placed each side of mould;
stamping rods comprises piston cylinders adapted for complete removal of soap casting from
mould; and
a conveyor means having cushioned structure operatively connected with said withdrawal means
such that the tablets falls from, said mould to said conveyor and avoid damage to soft tablets.
According to another aspect of the present invention there is provided a soap de-molding method
, said method comprising steps of:
peeling of soap casting which is placed on a closed mould having a top portion and a bottom
portion;
chopping of the runner of said soap casting located on said bottom portion with a blade; and
twisting of moulds to ensure removal of fresh soap bars.
DETAILED DESCRIPTION OF THE INVENTION
The present invention relates to an automated soap de-molding system and method.
In the present invention entails runner in the casting which needs to be chopped off from the
final finished article. The chopping action entails designing the profiled knife as per the curve of
the cast product.
Simulating mechanical actions of peeling the two parts so as to ensure the castings remain on the
desired half of the mold. This is done by optimizing the speed of separation, identifying points of
gripping the mold, suitable grooves in the mold for accurate gripping and a pressing cylinder to
simulate the pressing of the top-half. All these modes ensure that the castings remain in the
bottom half of the peeled mold.
Twisting action to displace the adhered tablet is done by making provisions for the grooves in the
mold which can be held by the pressing jaws, lifted and rotated to invert the mold, twisting done
at the either side of the molds to twist. This action drops the castings onto a cushioned belt
conveyor for collection downstream. The mold half is placed on separate conveyor for recycling
operations.
Cushioned belt conveyor for collection of soft tablets withdrawn from the molds.
According to first embodiment of the present invention there is provided an automated soap de-
molding system.
The soap de-molding system comprise a closed mould having a top portion and a bottom portion
adapted to store soap tablets where the mould comprises plurality of grooves , a mould opening
means for peeling action , a neck cutting means for chopping of neck operatively connected with
the mould opening means, a withdrawal means operatively connected with the neck cutting
means for simulating manual twisting action to displace castings from moulds and a conveyor
means having cushioned structure operatively connected with the withdrawal means such that the
tablets falls from, the mould to the conveyor and avoid damage to soft tablets.
The mould opening means for peeling action comprises a lifting/arm means having finger like
grooves fixed on a mobile arm in the top portion for holding and lifting;a clamp means fixed
with the bottom portion to hold bottom half; a piston cylinder arm for vertical movement; and a
pressing rod operatively connected with the clamp means adapted to ensure that the tablets
remain in bottom half.
A neck cutting means comprises a stopper means with sensors placed on the bottom portion of
mould adapted to stop the mould and ensure straight line orientation; and a cutter means with
profiled blades to chop the runner from soap tablet and providing a curved profile to the cut
portion inline with the tablet shape.
A withdrawal means comprises : a gripper frame means with projected fingers fixed on the
bottom portion of mould ; a pair of rotary cylinders for overturning twisting placed each side of
mould and stamping rods comprises piston cylinders adpated for complete removal of soap
casting from mould; and
The mould is flexible. The mobile arm fits into plurality of holes drilled on the top portion. The
gripper frame means fits into plurality of holes on the bottom portion. The top and bottom
portion having specific degree of force applied on them adapted to ensure the solidified soap
tablets remain in the bottom half of the mould while peeling open the top surface clean.
The bottom portion of mould comprises cushioned flap so that the tablets donot dislocate and
come out of the mould .
The pair of rotary cylinders for overturning of the moulds (180° rotation) and 90° twisting action
on either side in opposite directions to ensure removal of sticky-soft soap tablets.
The pair rotary cylinders rotates sequentially while the other remains stationary to provide
twisting action to moulds.
The neck cutting means comprise the moulds with cast tablets. The stopper means comprises a
stopper plate connected with the stopper means lifts upwards the mould with tablets and ensure
horizontal alignment of the mould; and plurality of rotating wheels at the side locations the
stopper means to ensure that the mould do not get lifted upwards and disorient when the stopper
means disengages to allow the mould to move forward.
The system also has a transfer means for taking away the demoulded moulds so that the twisting
frame continues for new mould.
According to second embodiment of the present invention there is provided an automated soap
de-molding method. The three steps of the method are:
peeling of soap casting which is placed on a closed mould having a top portion and a bottom
portion; chopping of the runner of the soap casting located on the bottom portion with a blade
and twisting of moulds to ensure removal of fresh soap bars.
The step of peeling of soap casting adapted for peeling action for the 2-part mould opening-
separating the two portions of the mould , the step comprises: gripping of mould lower and top
half; applying force to ensure that the solidified soap tablets remain in the bottom half of the
mould while peeling open the top surface clean; guiding cylinder positioning and pressing
application so as to help in peeling the top half of mould empty (without any tablets sticking).
The step of chopping of the runner of the soap casting located on the bottom portion with a blade
adapted for Chopping the runner of the solid casting (soap tablets) with a blunt blade, while the
solid tablets are inside the bottom part of the mould itself, without damaging the mould , the step
comprises : positioning of the mould half via sensors and stoppers to align the mould in straight-
line orientation before the chopping action; profiling the blade so as to dismember the runner
from soap tablet and providing a curved profile to the cut portion inline with the tablet shape and
cushioned flap covering the mould bottom half so that the tablets do not dislocate and come out
of the mould due to pushing force applied.
The step of twisting of moulds to ensure removal of fresh soap bars adapted for Simulating
mechanical action of twisting the flexible moulds to ensure removal of fresh soap bars which
could be slightly sticking on the mould surface, the step comprises : overturning of the moulds
(180° rotation) and 90° twisting action on either side in opposite directions to ensure removal of
sticky-soft soap tablets via rotary cylinders on each side of the mould ; removing of all soap
tablets in the mould by stamping rods; carrying the Tablets when separated from the mould on a
cushioned conveyor to ensure no damage to the soft-solid soap bars ; taking away the demoulded
moulds by a Carrier plate employed for so that the twisting frame can continue for new mould.
Features
- Simulating the peeling action for the 2-part mould opening- separating the two portions
of the mould;
- Chopping the runner of the solid casting (soap tablets) with a blunt blade, while the solid
tablets are inside the bottom part of the mould itself, without damaging the mould
- Simulating mechanical action of twisting the flexible moulds to ensure removal of fresh
soap bars which could be slightly sticking on the mould surface.
Simulating the manual actions of:
o peeling the top half of the mould,
o chopping off the runner with a profiled blade and
o twisting of the lower half of mould to withdraw the adhered tablets
Utility
The present system is an attempt to automate the soap casting process for flexible moulds. Linear
automation, in terms of mechanical gripping, conveying-gripping-overturning of moulds etc so
as to simulate the manual actions of demoulding, is employed for the system.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWING
Other features as well as the advantages of the invention will be clear from the following
description.
In the appended drawing:
Figure 1 illustrates the flowchart of the method steps.
Figure 2 illustrates the schematic view of the system.
Figure 3 illustrates the mould opening station for peeling action.
Figure 4 illustrates neck cutting station for chopping of neck.
Figure 5 illustrates table withdrawal station for simulating manual twisting action .
Figure 6 illustrates another view of the table withdrawal station for simulating manual twisting
action.
Figure 7 illustrates two part of the mould.
Figure 8 illustrates the measurements of two part of the mould.
DETAILED DESCRIPTION OF THE ACCOMPANYING DRAWING
In the following detailed description, reference is made to the accompanying drawings that form
a part hereof, and illustrate the best mode presently contemplated for carrying out the invention.
Further functioning of the system and method has been discussed below to describe the way it
operates. However, such description should not be considered as any limitation of scope of the
present system. The structure thus conceived is susceptible of numerous modifications and
variations, all the details may furthermore be replaced with elements having technical
equivalence. In practice the materials and dimensions may be any according to the requirements,
which will still be comprised within its true spirit.
Fig 1 discloses an automated soap de-molding method. The three steps of the method are:
1) Simulating the peeling action for the 2-part mould opening- separating the two portions
of the mould- with elements of:
a. accurate position and contact points for gripping of mould lower and top half.
b. degree of force applied to ensure that the solidified soap tablets remain in the
bottom half of the mould while peeling open the top surface clean.
c. guiding cylinder positioning and pressing application so as to help in peeling the
top half of mould empty (without any tablets sticking).
2) Chopping the runner of the solid casting (soap tablets) with a blunt blade, while the solid
tablets are inside the bottom part of the mould itself, without damaging the mould .
a. accurate positioning of the mould half via sensors and stoppers to align the mould
in straight-line orientation before the chopping action
b. profiling the blade so as to dismember the runner from soap tablet and providing a
curved profile to the cut portion inline with the tablet shape
c. cushioned flap covering the mould bottom half so that the tablets do not dislocate
and come out of the mould due to pushing force applied
3) Simulating mechanical action of twisting the flexible moulds to ensure removal of fresh
soap bars which could be slightly sticking on the mould surface.
a. Rotary cylinders on each side of the mould for overturning of the moulds (180°
rotation) and 90° twisting action on either side in opposite directions to ensure
removal of sticky-soft soap tablets
b. Stamping rods employed to ensure complete removal of all soap tablets in the
mould
c. Tablets when separated from the mould are carried on a cushioned conveyor to
ensure no damage to the soft-solid soap bars
d. Carrier plate employed for taking away the demoulded moulds so that the twisting
frame can continue for new mould. This helped in cutting down the cycle time of
the operation.
Fig 2 discloses the entire an automated soap de-molding system .
The different components of the an automated soap de-molding system are the Mould Opening
Station for peeling action, Neck Cutting Station for chopping of neck and Tablet Withdrawal
Station for simulating manual twisting action to displace adhered castings from moulds
(Simulating mechanical action of twisting the flexible moulds to ensure removal of fresh soap
bars which could be slightly sticking on the mould surface).
Fig 3: Mould Opening Station for peeling action: (Simulating the peeling action for the 2-part
mould opening- separating the two portions of the mould)
Components: .
• Arm with projected fingers to lift the top half.
• Clamps to hold bottom half.
• Mould with grooves for holding & lifting.
1. Piston cylinder arm for vertical movement
2. Projected fingers to peel off the top half
3. Mould with grooves
4. Clamps to hold the bottom half
19. Pressing Rod for ensuring tablets remain in
bottom half
Two part closed mould is gripped at the bottom half and the top half is lifted via finger-like
grooves on a mobile arm which fits into the holes drilled in the top half. The action is done to
simulate the manual peeling operation of the mould opening. Exact degree and point of
application of force is needed to ensure that the cast tablets remain in the bottom half of the
mould.
Simulating the peeling action for the 2-part mould opening- separating the two portions of the
mould- with elements of
• accurate position and contact points for gripping of mould lower and top half
• degree of force applied to ensure that the solidified soap tablets remain in the bottom half
of the mould while peeling open the top surface clean
• pressing rod positioning and pressing application so as to help in peeling the top half of
mould empty (without any tablets sticking)
Fig 4: Neck Cutting Station for chopping of neck: - Chopping the runner of the solid casting
(soap tablets) with a blunt blade, while the solid tablets are inside the bottom part of the mould
itself, without damaging the mould.
Components:
• Moulds with cast tablets.
• Stopper with sensors for horizontal alignment and wheels for smooth engagement.
• Cutter plate with profiled blades.
5. Mouldwith easted tablets
6. Stopper Plato
7. Sensors for horizontal alignment
8. Cutter Plato
9. Profiled Blades
10. Roller wheels
Mould bottom half with the cast tablets is stopped via a stopper and orientation is ensured via a
unique stopper. Once oriented, a cutting plate with profiled projections chops the runner off the
main casting within the mould. Post-chopping of the runner, the stopper plate lifts upwards to
allow the mould with tablets and chopped necks to be conveyed farther to Tablet Withdrawal
Station.
Chopping the runner of the solid casting (soap tablets) with a blunt blade, while the solid tablets
are inside the bottom part of the mould itself, without damaging the mould .
• accurate positioning of the mould half via sensors and stoppers to align the mould in
straight-line orientation before the chopping action.
• profiling the blade so as to dismember the runner (Excess bulk is filled in the cavity to
compensate for shrinkage. Runner is the solidified portion which is extra as compared to
the defined casting boundary and hence, needs to be chopped off from the casting body)
from soap tablet and providing a curved profile to the cut portion inline with the tablet
shape.
• cushioned flap covering the mould bottom half so that the tablets do not dislocate and
come out of the mould due to pushing force applied.
Stopper consists of a flat plate to ensure horizontal alignment and rotating wheels at the side
locations to ensure that the mould doesn't get lifted upwards and disorient when the stopper
disengages to allow the mould to move forward.
Fig 5 and 6: Tablet Withdrawal Station for simulating manual twisting action to displace adhered
castings from moulds (Simulating mechanical action of twisting the flexible moulds to ensure
removal of fresh soap bars which could be slightly sticking on the mould surface)
Components:
• Rotatory cylinders for overturning twisting
• Cushioned conveyor
11. Rotary Cylinders for twisting
action
12. Piston/Stamping Rods
13. Stamping plate
14. Cushioned Conveyor
15. Mould getting twisted for tablets
ejection
16. Transfer Plate
17. Holding Rod for transfer
18. Convcyor for top mould
This is the most critical station as it involves the direct handling of the finished casting. The
mould half with tablets and chopped neck is lifted via gripper frame with projected fingers which
fits with the holes drilled in the mould lower half. Overturning of the bottom half by 180 degree
is done so that the tablets are upside down (adhered in the mould half due to their sticking
tendency).
Cylinders at either end of the frame rotates sequentially while the other end remains stationary to
give a twisting action to the flexible mould which helps the tablets to separate from the mould
and fall beneath onto a cushioned conveyor to avoid any damage to the soft castings; In order to
ensure 100% removal of tablets from the moulds, a step of stamping the mould half via stamping
piston cylinders is done.
Simulating mechanical action of twisting the flexible moulds to ensure removal of fresh soap
bars which could be slightly sticking on the mould surface.
The rotary cylinders on each side of the mould, adapted for overturning of the moulds (180°
rotation) and 90° twisting action on either side in opposite directions to ensure removal of sticky-
soft soap tablets.
Stamping rods employed to ensure complete removal of all soap tablets in the mould.
Tablets when separated from the mould are carried on a cushioned conveyor to ensure no
damage to the soft-solid soap bars.
Carrier/ Transfer plate employed for taking away the demoulded moulds so that the twisting
frame can continue for new mould. This helped in cutting down the cycle time of the operation.
WE CLAIM:
1. A soap de-molding system, said system comprising
a closed mould having a top portion and a bottom portion adapted to store soap
tablets , said mould comprises plurality of grooves;
a mould opening means for peeling action comprises :
a lifting/arm means having finger like grooves fixed on a mobile arm in said top
portion for holding and lifting;
a clamp means fixed with said bottom portion to hold bottom half;
a piston cylinder arm for vertical movement; and
a pressing rod operatively connected with said clamp means adapted to ensure
that the tablets remain in bottom half;
a neck cutting means for chopping of neck operatively connected with said mould
opening means, said neck cutting means comprises :
a stopper means with sensors placed on said bottom portion of mould adapted to
stop said mould and ensure straight line orientation; and
a cutter means with profiled blades to chop the runner from soap tablet and
providing a curved profile to the cut portion inline with the tablet shape;
a withdrawal means operatively connected with said neck cutting means for
simulating manual twisting action to displace castings from moulds, said
withdrawal means comprises:
a gripper frame means with projected fingers fixed on said bottom portion of
mould ;
a pair of rotary cylinders for overturning twisting placed each side of mould;
stamping rods comprises piston cylinders adapted for complete removal of soap
casting from mould; and
a conveyor means having cushioned structure operatively connected with said
withdrawal means such that the tablets falls from, said mould to said conveyor and
avoid damage to soft tablets.
2. System as claimed in claim 1 wherein said mould is flexible.
3. System as claimed in claim 1 wherein said mobile arm fits into plurality of holes drilled
on said top portion.
4. System as claimed in claim 1 wherein said gripper frame means fits into plurality of holes
on said bottom portion.
5. System as claimed in claim 1 wherein said top and bottom portion having specific degree
of force applied on them adapted to ensure the solidified soap tablets remain in the
bottom half of the mould while peeling open the top surface clean.
6. System as claimed in claim 1 wherein said bottom portion of mould comprises cushioned
flap so that the tablets do not dislocate and come out of the mould .
7. System as claimed in claim 1 wherein said pair of rotary cylinders for overturning of the
moulds (180° rotation) and 90° twisting action on either side in opposite directions to
ensure removal of sticky-soft soap tablets.
8. System as claimed in claim 7 wherein said pair rotary cylinders rotates sequentially while
the other remains stationary to provide twisting action to moulds.
9. System as claimed in claim 1 wherein said neck cutting means comprise said moulds with
cast tablets.
10. System as claimed in claim 1 wherein said stopper means comprises :
a stopper plate connected with said stopper means lifts upwards said mould with
tablets and ensure horizontal alignment of said mould; and
plurality of rotating wheels at the side locations said stopper means to ensure that
said mould do not get lifted upwards and disorient when said stopper means
disengages to allow the mould to move forward.
11. System as claimed in claim 1 further comprises a transfer means for taking away the
demoulded moulds so that the twisting frame continues for new mould.
12. A soap de-molding method , said method comprising steps of:
peeling of soap casting which is placed on a closed mould having a top portion and
a bottom portion;
chopping of the runner of said soap casting located on said bottom portion with a
blade; and
twisting of moulds to ensure removal of fresh soap bars.
13. Method as claimed in claim 12 wherein said step of peeling of soap casting adapted for
peeling action for the 2-part mould opening- separating the two portions of the mould ,
said step comprises: gripping of mould lower and top half; applying force to ensure that
the solidified soap tablets remain in the bottom half of the mould while peeling open the
top surface clean; guiding cylinder positioning and pressing application so as to help in
peeling the top half of mould empty (without any tablets sticking).
14. Method as claimed in claim 12 wherein said step of chopping of the runner of said soap
casting located on said bottom portion with a blade adapted for Chopping the runner of
the solid casting (soap tablets) with a blunt blade, while the solid tablets are inside the
bottom part of the mould itself, without damaging the mould , said step comprises :
positioning of the mould half via sensors and stoppers to align the mould in straight-line
orientation before the chopping action; profiling the blade so as to dismember the runner
from soap tablet and providing a curved profile to the cut portion inline with the tablet
shape and cushioned flap covering the mould bottom half so that the tablets do not
dislocate and come out of the mould due to pushing force applied.
15. Method as claimed in claim 12 wherein said step of twisting of moulds to ensure removal
of fresh soap bars adapted for Simulating mechanical action of twisting the flexible
moulds to ensure removal of fresh soap bars which could be slightly sticking on the
mould surface, said step comprises : overturning of the moulds (180° rotation) and 90°
twisting action on either side in opposite directions to ensure removal of sticky-soft soap
tablets via rotary cylinders on each side of the mould ; removing of all soap tablets in the
mould by stamping rods; carrying the Tablets when separated from the mould on a
cushioned conveyor to ensure no damage to the soft-solid soap bars ; taking away the
demoulded moulds by a Carrier plate employed for so that the twisting frame can
continue for new mould.
16. A soap de-molding system as herein substantially described and illustrated with the
accompanying drawings.
17. A soap de-molding method as herein substantially described and illustrated with the
accompanying drawings.

ABSTRACT

The present invention relates to an automated system and a method of de-moulding of soap . The
soap de-molding system comprises a closed mould having a top portion and a bottom portion
adapted to store soap tablets , a mould opening means for peeling action , a neck cutting means
for chopping of neck operatively connected with said mould opening means, a withdrawal means
operatively connected with said neck cutting means for simulating manual twisting action to
displace castings from moulds and a conveyor means having cushioned structure operatively
connected with said withdrawal means such that the tablets falls from, said mould to said
conveyor and avoid damage to soft tablets. A soap de-molding method comprises peeling of soap
casting which is placed on a closed mould having a top portion and a bottom portion; chopping
of the runner of said soap casting located on said bottom portion with a blade and twisting of
moulds to ensure removal of fresh soap bars.