VRT GROUP 3

THE USABILITY Material : Polymer-
OF RICE COOKER thermoplastic (PTFE)

IN HUMAN DAILY LIFE

Group 3 // VRT3013
// TEKNOLOGI BAHAN
1. Nurzahira Awadah Binti Mohammad Anuar (D20182085692)
2. Nur Ain Faqihah Bt Mazran (D20182085682)
3. Nurza'im Najwa Binti Zainurin (D20182085670)
4. Izzati Nadiah Binti Zakaria (D20182085684)
5. Nur Hanis Binti Mohd Firdaus (D20182085694)
6. Nur Khairun Nisa’ Bt Noor Khairudin (D20182085651)
7. Athirah Binti Mahadi (D20182085681)
8. Nurin Khalidah Binti Najib (D20201093641)

// TABLE OF CONTENTS

01 INTRODUCTION 02 INTRODUCTION

RICE COOKER_ POLYMER-
THERMOOLASTIC_
PAGE 4-5 PAGE 6

03 CHEMICAL 04 APPLICATION
PROPERTIES OR
CHARACTERISTICS POLYMER-
OF PTFE_ THERMOOLASTIC_
PAGE 7-8
PAGE 9-14

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// TABLE OF CONTENTS

05 ADVANTANGES & 07 INTERACTIVE
DISADVANTANGE
SPTFE ON RICE QUIZ_
COOKER_
PAGE 17
PAGE 15

06 CONCLUSION 08 LAST
POLYMER- REFERENCE
THERMOOLASTIC_ PAGE 18
PAGE 16

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1. // INTRODUCTION

OF RICE COOKER

● A commercial Rice Cooker is a compact

countertop appliance designed to cook large
quantities of rice with the minimum amount of
supervision. Consisting of a non-stick inner
bowl, thermostat control and heating element,
the rice cooker is incredibly simple to use,
yet a massively valuable asset for businesses
which require bulk quantities of rice on a
daily basis.

● The first rice cooker was introduced in Japan

by Toshiba in 1955. Due to its huge popularity,
other companies soon joined the market, adding
innovations that expanded the abilities and
features available.

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// USES OF RICE COOKER BESIDES RICE

MAC & CHEESE PANCAKES SOUP CAKES

// HOW DOES RICE COOKER WORK?

First, the cooker heats up 5
the water until it reaches
212°F or 100°C and starts
to boil. Once it starts to
boil, it can’t get any
hotter. When the water is
gone and is absorbed by the
rice, the temperature
begins to rise and the rice
cooker notices this. Then
the machine turns off the
cooking and goes into keep
warm mode.

2. // INTRODUCTION (PTFE)

ThTehlearsmtico-Ppolalystmice-rPrmoloypmer Introduction of PolytetraP-fTeluFthoEyr–oleenthylene
Thermoplastics -
Thermoplastics are a Polymer (PTFE) Polytetrafluoroethylene
class of polymers that is a fluorocarbon solid
can be softened and (at room temperature),
as it is a high-molecular-
melted by the
application of heat, weight polymer
and can be processed consisting wholly of
either in the heat- carbon and fluorine.
softened state (e.g. by
thermoforming) or in PTFE is hydrophobic:
the liquid state (e.g. by neither water nor water-
extrusion and injection containing substances

molding). wet PTFE, as
fluorocarbons
demonstrate mitigated 6
London dispersion
forces due to the high

3. //
CHARACTERISTICS OF
POLYMER-
THERMOPLASTIC
(PTFE)

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// BASIC
PROPERTIES OF
POLYMER-
THERMOPLASTIC
(PTFE)

Good fatigue Low coefficient Exception
resistance under of friction chemical
low stress resistance
Good electrical
Availability of insulating Good
food, medical power in hot resistance to
and high-purity and wet heat and low
grades environments temperature

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4.

USES &
APC/P/ELNOICTUAERTRIONS
OF POLYMER-

THERMOPLASTIC
(PTFE) IN LIFE

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// USES

PTFE has applications in a

huge range of industrial

sectors, including automotive,

chemical, electronic,

aerospace and medical.

// USES

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// IPNTNFOEVSAHTEIOENTSAND FILM

PTFE has such a high melting point
for a polymer,, it is commonly used to
produce sheets and films for further
applications. Sheets and thin films of
PTFE are used mainly in the
packaging sector. In the packaging of
chemical equipment, pharmaceuticals
and cosmetic products, a chemically
inert material such as PTFE is worth
the extra cost in comparison to other
commodity packaging materials.

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// INNDUOSVTARTIAOLNCSOATING

The most frequent application of PTFE globally is in
industrial coatings. It has a very low friction
coefficient and high-temperature resistance, making
it perfect for demanding conditions. Interestingly,
PTFE lubricant is used in the construction of
igniters for rocket propellants, and to coat certain
types of bullets to reduce wear on the inside of the
barrel. Other uses include coatings for hoses
subjected to corrosive environments and low-
friction coatings on windshield wipers and hair
straighteners. Teflon coatings and non-stick wear
are used on kitchenware to prevent food from
sticking to pots and pans.

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// IPNTNFOEVPAOTWIODNESR

Fine PTFE powder can be paste
extruded into useful shapes such
as tapes, wires and tubes. These
are mostly used for the insulation
of wires and cables, tubing, pipe
liners and films. PTFE powder can
also be used as a powder coating
for some materials, offering a
more aesthetic finish.

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// APPLICATION

// TECHNOLOGY
// INNOVATION

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// PTFE ON RICE COOKER

ADVANTANGE DISADVANTANGE 15

➔ Teflon is safe if it is not ➔ Price – it is not a low-cost
scratched or overheated. Teflon polymer.
becomes a problem if it is
exposed to the temperatures ➔ Production sizes – it is not
exceeding 500 °F. easy to mass produce.

➔ However, Rice cooker cooks rice ➔ It cannot be cemented.
around the boiling point 212 °F.
Therefore, there is a no concern ➔ It can change shape under
with Teflon being overheated pressure.

➔ The good of quality product for ➔ It is unwelldable.
long term as not scratched or
overheated.

6. // CONCLUSION

The fact of the matter is that most rice
cookers have PTFE coating, and PTFE can be
dangerous to our health.

Even with careful use and cleaning, PTFE can
still scratch and release harmful chemicals
into our food as the appliance as it ages.
It’s better to choose a safe alternative that
we don’t have to worry about every single
time we’re preparing our food.

Consider our product suggestions and make the
right choice. Be sure to compare all the
available options so that we can choose the
best product for our cooking needs.

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7. // THE DIFFERENCES
BETWEEN OLD RICE COOKER
AND NEW DESIGN RICE COOKER.

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THE DIFFERENCES BETWEEN OLD RICE COOKER
AND NEW DESIGN RICE COOKER.

OLD RICE COOKER NEW DESIGN RICE COOKER

The heating element in the rice Has a pressure sensor and a lid that
cooker heats up the liquid with the can be sealed or locked. This allows
rice, causing it to evaporate and the cooker to increase and maintain
turn to steam. The rice then absorbs the pressure level inside the pot.
the hot liquid and becomes soft.
It cooks food more quickly. Suitable
Manufactured as multi-functional used for tenderizing large chunks of
and may be used as slow cooker. meat for dishes

Material : Aluminium and coated with Materials : Aluminium alloy inner pot
non-stick Teflon. Inner bowl made of is durable and offers more effective
high quality 3-ply Stainless Steel heat conduction. Special coloured
18/10 with 100% pure aluminium clad Whitford golden coating is anti-
material for even heat distribution scratch and non-stick.

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//THE DIFFERENCES BETWEEN
OLD RICE COOKER AND NEW
DESIGN RICE COOKER.

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THE DIFFERENCES BETWEEN OLD RICE COOKER
AND NEW DESIGN RICE COOKER.

OLD RICE COOKER NEW DESIGN RICE COOKER

Material : stainless steel inner cooking Materials : have an inner pot made of
pot which means no Teflon coated aluminium aluminium coated with non-stick Teflon.
cooking pot

The inner cooking pot is made from surgical- This non-stick coating is used for preventing
grade stainless steel. It still save to use rice from sticking to the pot. However, if
even have scratched other than Teflon coating non-stick Teflon is scratched, the pot can
rice cooker. release dangerous chemicals. Teflon is safe
if it is not scratched or overheated.

The stainless steel pot is removable and easy When the cooking cycle is started a heating
enough to clean. The automatic warm mode element with built-in temperature control
keeps the rice warm after it has finished sensors is activated. Water boils and turns
cooking. to steam upon reaching 212℉, the thermostat
turns off and the steam cooks the rice

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8. INTERACTIVE QUIZ

https://wordwall.net/play/25573/108/783

// TECHNOLOGY
// INNOVATION

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REFERENCE_

1. https://www.smartechonline.com/uses-ptfe/
2. https://matmatch.com/learn/material/polytetrafluoroethylene-ptfe-teflon
3. https://www.nisbets.co.uk/ricecookers
4. https://www.buzzfeed.com/melissaharrison/rice-cooker-recipes
5. https://omnexus.specialchem.com/selection-guide/polytetrafluoroethylene-ptfe-fluoropolymer
6. https://www.hardwaremise.com.my/characteristic-of-ptfe
7. https://kitchensnitches.com/do-rice-cookers-have-teflon/
8. https://www.roechling.com/sg/industrial/materials/thermoplastics/detail/fibracon-ptfe-virgin-
9. https://www.sciencedirect.com/topics/materials-science/thermoplastics
10. https://www.potskitchenware.com/homeplus/homeplus-3-ply-stainless-steel-18-10-rice-
cooker-msrc320-2-litre
11. https://www.corriecooks.com/rice-cookers-vs-pressure-cookers-differences/
12. https://ricecookeradvice.com/features/rice-cooker-without-teflon
13. https://www.corriecooks.com/rice-cookers-vs-pressure-cookers-differences/
14. https://ovenspot.com/how-do-rice-cookers-work/

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