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Shehwa P&C
[Korea]
Address:
82-10, Myobong-ro, Idong-myeon, Cheoin-gu, Yongin-si Gyeonggi-do 17138 Korea
Phone:
82-31-6223893
Contact name:
Hanna Lim , Manager



Shehwa P&C
 

Anti-Fog Film

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Anti-Fog Film

Click to enlarge image

 Origin

Korea


Anti-fog film is commonly used in everyday life. For instance, glasses, bathroom-mirror, car windows, goggles, ski-goggles. This film makes clear view by preventing the fog. Anti-fog film can improve comfortable life and secure.
Sewh

Anti-fog film is commonly used in everyday life. For instance, glasses, bathroom-mirror, car windows, goggles, ski-goggles. This film makes clear view by preventing the fog. Anti-fog film can improve comfortable life and secure.
Sewha has Anti-fog film, Anti-fog Coated products, and Anti-fog coating solution.

Various Product Line

Product
Material
Coating
method
Usage
Advantage
Film
PET
Roll to Roll
Bathroom mirror, car window,interior window, showcase,outdoor display, goggles, helmet,air respirator, dashboard, camera lens, shower booth.
-Superior capability
-Applicable various material
-Shatter-proof effect
-Easy removable & easy apply
PC
Roll to Roll
Motorcycle helmet, air respirator, hygiene mask, sun visor
-High robustness
-High transparancy
-High durability
-Suitable for below 0.5t thickness
Flow
Goggles, lens
-Suitable for over 0.8t thickness
-Thermoform abailable
-High transparancy & durability
-Improved productivity due to advanced hardening time
-Good slip performance than competitors
Coating
Flow
Goggles, lens, dashboard, flat-plate(PC), interior window, CC camera
-Applying various shape of material
Dip
Goggles, lens, dashboard, CC camera, glasses
-Applying various shape of material
Coating Solution
Apply coating solution on various material like Helmet, PC material, etc.
-Varous coating available
-Easy solution recovery than competitors
-Reliable technical support

Advantage

  • High Durability / Long lasted coating performance, high chemical resistance, strong wear resistance.
  • High Transmission / Clear visibility and high optical transmittance in coating side
  • Anti-spattering / Preventing additional injuries of mirror and window's broken fragment
  • Waterproof / Maintaining performance while exteneded exposure to Ultraviolet with no yellowing
  • Convenience / Self-adhesive function, easy apply, easy to cleaning the coating side
  • Complience with environmental standard / Eco-friendly products with allowing domestic and international standard

Application Examples

Bathroom Mirror or Shower Booth

  • Keep your bathrom mirror and shower booth from fogging
  • 100% visibility provide useful for shaving or make up
  • Shatterproof function prevents injury of broken mirror

Canopy, Curtain, Wall, Dome, Lighting, Window

  • Eliminate fogging of the window in humid summer, get rid of frost or droplet formation on a cold winter. it improves the quality and growth of greenhouse plants by preventing the internal heat of the sun
  • Increase safty by preventing the glass scattering, when the glass is broken due to strong wind such as typhoon
  • Increase the energy efficiency by removing the glass fogging when applied to the solar cell, skylights, -Increase the energy efficiency by removing the glass fogging when applied to the solar cell, skylights, greenhouses.

Window and Dashboard of Car, Public Transportation, Airplane

  • Provide clear view in the winter or the rainy seasons
  • Prevent traffic accident to secure clear view of front and side-mirror

Military Tank, Plane, Binoculars, Endoscope, Security Camera, Outside Display

  • Increase publicity effect to prevent fogging outside display in the winter
  • Increase operational efficiency by clear outside observation available, when applied military tank, plane, etc.

Commercial Refrigeration Cabinet

  • Enhence display effect of commercial showcase, convenience store, bakery, etc. It achieve sales increase
  • High durability, resistant to abrasion and other contamination

Goggles, Helmet, Air Respirator, Swimming Goggles, Hygiene Mask

  • Improve visibility of sports goggles, helmet, swimming goggles
  • Provide clean impression when you apply hygiene mask in restaurant
  • Reduce glass breakage frequency and shatterproof function prevents injury of broken glasss

Standards and General Specifications

Category
Unit
Standard
Remark
Transmittance
%
>91
ASTM D 1003
Haze
%
<1.0
ASTM D 1003
Hardness
H
>H
JIS K5600-5-4
Performance maintenance time
sec
>40
European standard for shield
Cold resistance
-
60°C, 95%RH X 72hr /Test OK
 
Cold resistance
-
-18°C X 72hr/Test OK
 

Manufacture method and characteristic of Anti-fog film shield

Sewha's way
coating [PC]

  • Using Thermo curing or UV Curing types of coating solution to material’s surface for lowering water
  • Continuous process makes less production cost

Normal corrotion way
Surface treatment [CA (Cellulose Acetate), CP (Cellulose Propionate)]

  • Using special chemical material to surface treatment for lowering the contact angle
  • High material cost and High production cost due to complex process (Etching-washing-drying)

Physical Property of CA, CP and PC

Property
Unit
Test method
CA
CP
PC
Density
-
ASTM
D792
1.31
1.2
1.2
Water absorption
%
ASTM
D570
2
1.8~2.5
0.4
Tensile Strength
Psi
ASTM
D882
5,300
-
8,500
Elongation
%
ASTM
D882
25
-
100~150
Coefficient of thermal expansion
10-sin/in-°C
ASTM
D696
11~16
14~17
3~4
Tg
°C
TGA
67~68
130
150

Regarding PC, High mechanical property such as impact resistance and no deformation of heat

Optical Property of CA, CP and PC

Sheet
Transimittance
(%)
Haze
(%)
Remark
CA(0.5T)
90~91%
<0.3
-
CP(0.5T)
90~91%
<0.3
-
PC (0.3T) AF coating both side
92~93%
<0.3
High optical properties than CA, CP

Reliability Test of Anti-fog Film

Category
Measurement
Standard
Testing method
Anti-fog function
Maintain 3 years performance(from manufacture date)
-
*Maintenance Performance Period
- initial performance: After the products completely dried, maintain anti-fog effect about 15 minutes to 80% humidity in an enclosed area of approximately 20m3
- postscript performance: There are differences of performance decrease due to usage habbit or contamination of user space. Compliance with the management rules in a conventional environment, the performance decrease gradually after constuction, and 40~50% performance remains after 3 years
Discoloration
No discoloration
-
No discoloration after 3years of manufactured date
Room temperature durability
No fogging over 5 times
KS M6685
Applied 1cycle, exposed to 5±2°C 30min, 20±°C, 65±5% humidity
After repeatedly performing, judge blur and dew condesation
Low-temperature durability
No fogging over 5 times
KS M6685
Applied 1 cycle, exposed to 5±2°C 30min, 23±2°C, 50±5% humidity
After repeatedly performing, judge blur and dew condesation
High-temperature durability
No fogging over 600 hours
KS M6685
Exposed to 70±1°C, having blur test every 24hour during initial 7days
Interval measurement after 14 days : Follows low temperature durability evaluation criteria
High temperature & humidity Durability
No fogging over 600 hours
KS M6685
Exposed to 55±2°C, 95%, having blur test every 24hour during initial 7days
Interval measurement after 14 days : Follows low temperature durability evaluation criteria
Water resistant
>20sec
EN 168 EN 166
Dipping 1 hour in distilled water, natural drying over 12 hours at room temperature,
At 50°C water vapor survey, duration time over 80% transmittance
UV stability
>30sec
-
48 hours UV irradiation at 125W, Xenon lamp,
At 50°C water vapor survey, duration time over 80% transmittance

 

a has Anti-fog film, Anti-fog Coated products, and Anti-fog coating solution.

 

Various Product Line

Product
Material
Coating
method
Usage
Advantage
Film
PET
Roll to Roll
Bathroom mirror, car window,interior window, showcase,outdoor display, goggles, helmet,air respirator, dashboard, camera lens, shower booth.
-Superior capability
-Applicable various material
-Shatter-proof effect
-Easy removable & easy apply
PC
Roll to Roll
Motorcycle helmet, air respirator, hygiene mask, sun visor
-High robustness
-High transparancy
-High durability
-Suitable for below 0.5t thickness
Flow
Goggles, lens
-Suitable for over 0.8t thickness
-Thermoform abailable
-High transparancy & durability
-Improved productivity due to advanced hardening time
-Good slip performance than competitors
Coating
Flow
Goggles, lens, dashboard, flat-plate(PC), interior window, CC camera
-Applying various shape of material
Dip
Goggles, lens, dashboard, CC camera, glasses
-Applying various shape of material
Coating Solution
Apply coating solution on various material like Helmet, PC material, etc.
-Varous coating available
-Easy solution recovery than competitors
-Reliable technical support

Advantage

  • High Durability / Long lasted coating performance, high chemical resistance, strong wear resistance.
  • High Transmission / Clear visibility and high optical transmittance in coating side
  • Anti-spattering / Preventing additional injuries of mirror and window's broken fragment
  • Waterproof / Maintaining performance while exteneded exposure to Ultraviolet with no yellowing
  • Convenience / Self-adhesive function, easy apply, easy to cleaning the coating side
  • Complience with environmental standard / Eco-friendly products with allowing domestic and international standard

Application Examples

Bathroom Mirror or Shower Booth

  • Keep your bathrom mirror and shower booth from fogging
  • 100% visibility provide useful for shaving or make up
  • Shatterproof function prevents injury of broken mirror

Canopy, Curtain, Wall, Dome, Lighting, Window

  • Eliminate fogging of the window in humid summer, get rid of frost or droplet formation on a cold winter. it improves the quality and growth of greenhouse plants by preventing the internal heat of the sun
  • Increase safty by preventing the glass scattering, when the glass is broken due to strong wind such as typhoon
  • Increase the energy efficiency by removing the glass fogging when applied to the solar cell, skylights, -Increase the energy efficiency by removing the glass fogging when applied to the solar cell, skylights, greenhouses.

Window and Dashboard of Car, Public Transportation, Airplane

  • Provide clear view in the winter or the rainy seasons
  • Prevent traffic accident to secure clear view of front and side-mirror

Military Tank, Plane, Binoculars, Endoscope, Security Camera, Outside Display

  • Increase publicity effect to prevent fogging outside display in the winter
  • Increase operational efficiency by clear outside observation available, when applied military tank, plane, etc.

Commercial Refrigeration Cabinet

  • Enhence display effect of commercial showcase, convenience store, bakery, etc. It achieve sales increase
  • High durability, resistant to abrasion and other contamination

Goggles, Helmet, Air Respirator, Swimming Goggles, Hygiene Mask

  • Improve visibility of sports goggles, helmet, swimming goggles
  • Provide clean impression when you apply hygiene mask in restaurant
  • Reduce glass breakage frequency and shatterproof function prevents injury of broken glasss

Standards and General Specifications

Category
Unit
Standard
Remark
Transmittance
%
>91
ASTM D 1003
Haze
%
<1.0
ASTM D 1003
Hardness
H
>H
JIS K5600-5-4
Performance maintenance time
sec
>40
European standard for shield
Cold resistance
-
60°C, 95%RH X 72hr /Test OK
 
Cold resistance
-
-18°C X 72hr/Test OK
 

Manufacture method and characteristic of Anti-fog film shield

Sewha's way
coating [PC]

  • Using Thermo curing or UV Curing types of coating solution to material’s surface for lowering water
  • Continuous process makes less production cost

Normal corrotion way
Surface treatment [CA (Cellulose Acetate), CP (Cellulose Propionate)]

  • Using special chemical material to surface treatment for lowering the contact angle
  • High material cost and High production cost due to complex process (Etching-washing-drying)

Physical Property of CA, CP and PC

Property
Unit
Test method
CA
CP
PC
Density
-
ASTM
D792
1.31
1.2
1.2
Water absorption
%
ASTM
D570
2
1.8~2.5
0.4
Tensile Strength
Psi
ASTM
D882
5,300
-
8,500
Elongation
%
ASTM
D882
25
-
100~150
Coefficient of thermal expansion
10-sin/in-°C
ASTM
D696
11~16
14~17
3~4
Tg
°C
TGA
67~68
130
150

Regarding PC, High mechanical property such as impact resistance and no deformation of heat

Optical Property of CA, CP and PC

Sheet
Transimittance
(%)
Haze
(%)
Remark
CA(0.5T)
90~91%
<0.3
-
CP(0.5T)
90~91%
<0.3
-
PC (0.3T) AF coating both side
92~93%
<0.3
High optical properties than CA, CP

Reliability Test of Anti-fog Film

Category
Measurement
Standard
Testing method
Anti-fog function
Maintain 3 years performance(from manufacture date)
-
*Maintenance Performance Period
- initial performance: After the products completely dried, maintain anti-fog effect about 15 minutes to 80% humidity in an enclosed area of approximately 20m3
- postscript performance: There are differences of performance decrease due to usage habbit or contamination of user space. Compliance with the management rules in a conventional environment, the performance decrease gradually after constuction, and 40~50% performance remains after 3 years
Discoloration
No discoloration
-
No discoloration after 3years of manufactured date
Room temperature durability
No fogging over 5 times
KS M6685
Applied 1cycle, exposed to 5±2°C 30min, 20±°C, 65±5% humidity
After repeatedly performing, judge blur and dew condesation
Low-temperature durability
No fogging over 5 times
KS M6685
Applied 1 cycle, exposed to 5±2°C 30min, 23±2°C, 50±5% humidity
After repeatedly performing, judge blur and dew condesation
High-temperature durability
No fogging over 600 hours
KS M6685
Exposed to 70±1°C, having blur test every 24hour during initial 7days
Interval measurement after 14 days : Follows low temperature durability evaluation criteria
High temperature & humidity Durability
No fogging over 600 hours
KS M6685
Exposed to 55±2°C, 95%, having blur test every 24hour during initial 7days
Interval measurement after 14 days : Follows low temperature durability evaluation criteria
Water resistant
>20sec
EN 168 EN 166
Dipping 1 hour in distilled water, natural drying over 12 hours at room temperature,
At 50°C water vapor survey, duration time over 80% transmittance
UV stability
>30sec
-
48 hours UV irradiation at 125W, Xenon lamp,
At 50°C water vapor survey, duration time over 80% transmittance

 




Inquire now