Antimicrobial Coating Solution - Singapore Asahi Chemical & Solder Ind. Pte Ltd Asahi Lifecare Technology
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Antimicrobial
Coating
Solution
Singapore Asahi Chemical & Solder Ind. Pte Ltd
Asahi Lifecare Technology
KH Chew Nov 2021
1
Table of Contents
• Development Background For AHC
• Antimicrobial Coating Technology
• Antimicrobial Coating vs Disinfectant
• Safety Test
• Anti-Bacteria Test Report
• Anti-viral Test Report
KH Chew Nov 2021
2
Development
Background For
AHC
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3
Mankind has faced, and will continue to face infectious
diseases of different scales Worst Hit Countries by COVID19 2021
# Country Total Cases Total Deaths Population
WORLD 248,023,907 5,024,258
1 USA 46,931,766 767,441 333,590,717
2 India 34,285,814 458,470 1,398,087,214
3 Brazil 21,814,693 607,954 214,573,835
4 UK 9,097,311 140,672 68,361,530
5 Russia 8,593,200 240,871 146,017,940
6 Turkey 8,061,666 70,828 85,548,479
7 France 7,168,743 1,117,689 65,466,165
8 Iran 5,944,599 126,616 85,425,266
9 Argentina 5,289,945 115,989 45,748,561
10 Spain 5,011,148 87,368 46,778,937
14 Indonesia 4,245,373 143,457 277,378,151
19 Philippines 2,792,656 43,404 111,524,107
20 Malaysia 2,476,268 28,975 32,918,484
24 Thailand 1,927,763 19,338 70,033,589
26 Japan 1,722,966 18,275 125,959,810
40 Vietnam 932,357 22,205 98,505,968
60 Myanmar 500,950 18,714 54,896,111
74 South Korea 367,974 2,874 51,328,044
93 Singapore 200,844 421 5,911,678
99 Australia 173,198 1,756 25,894,127
109 Cambodia 118,702 2,800 17,027,193
113 China 97,314 4,636 1,439,323,776
132 Laos 41,829 70 7,416,186
160 Taiwan 16,421 847 23,874,275
169 Brunei 13,321 89 443,062
172 Hong Kong 12,350 213 7,578,061
179 New Zealand 6,723 28 5,002,100
KH Chew Nov 2021
ASEAN Data: Worldometer's COVID19 data 02Nov2021
4
Transmission of Infectious Diseases is via skin contact with
contaminated surfaces
Wash our hand often is
recommended but difficult
to be practiced
Anti-microbial coating on common areas will kill
bacteria and virus and reduce the transmission rate
of infectious deceases
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Additional layers of protection are needed to protect the
most vulnerable
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AHC Anti-microbial Coating
Technology
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Asahi Coating Technology Overview
✓ Suitable* for Glass, Wood, Fabric, *Different substrates have different
Textile, Leather (natural & synthetic), adhesion and curing time, and surface
pre-treatment before coating
Polymer, Metals
✓ Matrix + Additives + Diluent
✓ Specially formulated matrix Substrates
for tunable concentration ✓ 99.99% anti-bacterial efficacy against
and functions E.coli (ATCC 8739), S.aureus (ATCC
✓ Silver/Copper Nanowires Anti- 6538P), MRSA and others.
and/or Silver-ion based Formulation Microbial ✓ >99.99% against EV-A71 virus, H1N1
additives for enhanced
Performance ✓ >99.99% Murine Coronavirus
antimicrobial function ✓ >99.9% Surrogate COVID OC43
AHC
Binder
✓ Non-cytotoxic (in-vitro)
✓ Tacky dried in minutes Coating
Safety
✓ Non-skin irritation/ sensitization
✓ Thermal cure preferred
Process (according to ISO10993-10)
✓ Ambient cure suitable ✓ Food Contact (FDA Part 175.300)
✓ Suitable for spraying, Additional
dipping, brushing, Functions
wipe-on ✓ Hydrophobic
✓ Transparent ✓ Stain Repellent
✓ Colored tunable ✓ Protective coating
✓ Gloss/ Matt finish tunable ✓ Easy to Clean
✓ Retain original look of Surfaces
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8
Disinfectant versus Antimicrobial
coating https://www.freepik.com/photos/technology>Technology
photo created by freepik - www.freepik.com
Disinfectant Antimicrobial Coating
1. Ability to kill instantly 1. Effective control of bacteria, mould,
2. Not sustainable fungi and viruses
3. Require continuous application 2. Formation of transparent coating
to get best effect onto surfaces
4. Upon cleaning, efficacy is 3. Protective coating on existing
compromised surfaces
4. Withstand cleaning without losing
efficacy
5. Absence of toxic effects on treated
surfaces
6. Enhanced durability
7. Continuously inactivate bacteria
https://www.freepik.com/photos/health'>Health photo created by and viruses
aleksandarlittlewolf - www.freepik.com
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9
Antimicrobial Coating
Recommended Test Process and
Procedures
Testing Procedure
I. Cleanliness Test By Adenosine Triphosphate (ATP) Method (Optional)
a. Equipment Used (by Asahi Lifecare) is Kikkoman ATP Tester
b. Take the cotton swab out from the individual casing provided by the supplier.
c. Prewet it in the DI or Distilled Water.
d. Rub the swab on intended test surface (100cm2) by following horizontal
strokes and followed by vertical strokes.
e. Placed the cotton swab back to the designated casing till you hear a click
sound.
f. Shake the casing vigorously till the chemical is in the casing dissolved
completely.
g. Placed the casing into the reader and READ and record results.
II. On Site Microbes Swab Test (In-House or 3rd Party Lab)
a. Pre-wet the sterile swab stick in 0.85% sterile saline
b. Rub the stick on intended test surface (100cm2) by following horizontal
strokes, followed by vertical strokes
c. After sampling, store the swabbed stick back to empty swab packaging
d. Label the name of the intended surface and date and time of the swab
e. Transport and store the swabbed stick to intended laboratory within 4 hours
f. Report Results by laboratories with photos of the colonies.
Schedule of Swab Test
1. Swab Test should be done before coating
2. Swab Test done after 24 hours of coating or recommended by the coating supplier
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3. Scheduled swab as per intended timing after coating for example swab every weekly
or fortnightly or monthly to check on the coating efficacy towards microbes.
10Product and Application Video
(Youtube links)
AHC7 Product Video
Nostalgia Hotel Project Video
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11Safety Tests
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12Cytotoxicity Test Report Degree of cytotoxicity
Skin Irritation Test Primary irritation is negligible (index
Skin Sensitization
Test Report
No skin sensitization, as per ISO 10993-10:2013
Biological evaluation of medical devices Part 10:
Tests for irritation and skin sensitization
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15Food
Contact
Test
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16Anti-bacterial Test Report
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17Coated PET film with Antimicrobial activity value,
tested as per JIS Z 2801: Antibacterial Products -- Test For Antibacterial Activity And
Efficacy
Conclusion: AHC7 has exhibited at least 99.99% reduction on various bacteria such as Staphylcoccus, MRSA, E-Coli,
Kiensiella pneumonia, etc
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18Coated fabric Undergo washability Test,
tested as per ASTM E2180 - 07: Standard Test Method for Determining the Activity of
Incorporated Antimicrobial Agent(s) In Polymeric or HydrophobicMaterials
Conclusion: After 10X wash, coated fabric with AHC7 antimicrobial coating exhibited at least 99.9% reduction on
bacteria such as Staphylcoccus and Kiebsiella pneumonia.
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19Anti-Virus Test Report
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20Anti Viral Test Report using AHC coating
Conclusion:
AHC7 has showed complete
inhibition on influenza A virus or
H1N1
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21Anti Viral Test Report using AHC coating
Conclusion:
AHC7 has exhibited at least
99.99% reduction on EV-A71 or
HFMD virus
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22Anti Viral Test Report using AHC coating
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23Test Results on
Sars-Cov2
Surrogate OC43
by TUV NORD
Conclusion: Efficacy against
Human coronavirus OC43
Surrogate to Sars-Cov2 99.9%
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24Anti-Bacterial
Varying Contact
Time Testing
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25Conclusion: After 30minutes of coating, bacterial efficacy can be as much as 99.9%
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26Washability Test
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27Methodology
Adopted from ASTM D4828 - Standard Test Methods for Practical Washability
of Organic Coatings
• Check WCA & other properties of sample before
test
• Soak the 3M sponge sufficiently with tap water
• Place the wet sponge and holder at one end of the
panel so that its long axis is parallel to the length of
the sample
• Turn on pump to add water while the equipment
run
• Allow the sponge to travel specific number of cycles
• Check WCA & other properties of sample after
specific number of cycles
• Test pieces were sent for Mueller Hinston Agar
(MHA) Plate Testing using E-Coli BL21 in accordance
to JIS Z 2801:2010 “Antibacterial products-Test for Speed: 37±1 cycle/min
antibacterial activity and efficacy” Load: Dry sponge + holder = 1kg
• Incubation period – 24 hours KH Chew Nov 2021
28Bacterial Efficacy based Percent reduction after
24 Hours Contact
Sample condition:
- Sprayed 2 pass at 5cm distance – about 1 micron thickness
- Contact period: 24hours
- Incubation period: 24 hours
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29Bacterial Efficacy based Percent reduction after 24Hours
Contact
Sample condition:
- Sprayed 2 pass at 5cm distance – about 1 micron thickness
- Contact period: 24hours
- Incubation period: 24 hours
Initial After 5k wash
AHC on PC >99% reduction > 99% reduction
AHC on glass > 99% reduction > 90%
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30Examples of
AHC7/AHC23 End-Users
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31The Mills International
• Anti-microbial carpets & flooring alternatives for exhibition halls
• Created a new line of product: EXPOflor
Source: https://expoflor.com.sg/ Source: https://expoflor.com.sg/
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32Nostalgia Hotel Singapore
• Boutique Hotel situated at Tiong Bahru
• Coated AHC7 for their hotel room, including
curtains, carpet, bathroom
• Other high touch areas coated includes phone,
remote control, switches and doorknobs
Source: https://www.hotelnostalgia.com.sg/
Source: https://www.hotelnostalgia.com.sg/
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33Thank you
KH Chew
Technical cum R&D Director
KH Chew Nov 2021
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