Anti fog and anti-condensations coatings help prevent fog and condensation or micro-beading of water droplets on surfaces, such as glass. Such coatings play a crucial role across various industries, including sports, medical, aerospace, military, and more, where compromising vision is both annoying and risky.
Fogging can happen out of the blue while you are wearing a face mask, stepping outside from indoors, or enjoying a cup of hot coffee with your family or friends.
At Hydromer, we manufacture premium, high-performance, anti-fog coatings to eliminate the inconvenience and safety concerns caused by foggy lenses, glasses, visors, windshields, glass, etc.
If you are curious how fog is formed on surfaces and how anti-fog coatings can help prevent it, make sure to read this article until the end.
Anti Fog Coatings – Definition & Overview
What is Fog / Condensation & Why is it an Issue?
In simple terms, condensation and fog happens when warm or moist air hits a cool surface. This will result in the surface becoming “fogged”. As a result, condensation and fog can cause issues in many situations.
The most obvious issue is that it makes it difficult to see. For example, fogged safety glasses or face protection (such as a shield) can become more just than an annoyance. Removing them and taking time to clean them may lead to issues, such as serious injuries and lower productivity.
In addition, condensation and fog can create issues in many other situations. These range from issues with electronics and sensors to LEDs and optics, and manufacturing equipment.
This is why fog control coatings have become so popular in a wide range of applications.
What are Anti-Fog Coatings?
Anti-fogging and condensation control coatings are applied on the surface of materials like glass when visibility or prevention of condensation is crucial. These viscous liquids are applied consistently on the surface of the substrate using a roll, dip, curtain or HVLP application method. They are then thermally cured to create a stable anti-fog coating.
Such a coating reduces the surface tension of water, allowing the moisture to spread evenly across the surface of the substrate.
Hydrophilic vs Hydrophobic Coatings
Generally, anti-fogging is achieved by making the surface either super-hydrophilic or superhydrophobic.
- Hydrophilic anti-fog coatings – Super-hydrophilic surfaces are created using a hydrophilic coating. Hydrophilic coating formulations tend to transform the water droplets into a transparent thin layer. Such thin films do not alter the optical properties of the substrate or underlying material. This makes them a good fit for many applications.
- Hydrophobic anti-fog coatings – water droplets will simply roll off when the surface is superhydrophobic. Such technology is mostly used in applications where self-cleaning or water-repellent surfaces are needed.
Suitable Substrates
Every coating formulation is different. Our Hydromer®, Inc. Brillianz® and Luxere® Anti-Fog/Condensation Control Coatings can be applied to a wide range of substrates. This makes them useful for many applications, not just fog/condensation control on glass.
Below is a list of compatible substrates for our anti-fog coatings:
- Acrylic
- PVC
- Polycarbonate (PC)
- Polyethyleneimine (PEI)
- PET (Polyester Film)
- Polyamide (Optical Nylon)
- Glass
- Metals – including stainless steel
- Silicone
- Transparent plastic films (used for food packaging)
Hydromer is a leading manufacturer of industrial coatings. Our team understands the importance of high-performance anti-fog coatings for your applications. Get in touch for expert guidance on anti-fog protection for your substrate or material.
Benefits of Anti-Fog Coatings
These coatings offer a variety of benefits. Some of the most notable are discussed below.
1. Improved Visibility
The main purpose of anti-fog and anti-condensation coatings is to keep the surface clear to ensure better visibility regardless of fluctuating temperatures that result in condensation/fogging.
An example of this is with eyewear and other applications where visibility is important or even critical. When these coatings are applied to surfaces, such as eyeglasses, face protection, windshields, etc. visibility is maintained. This means you will be able to see better. It means you don’t need to take the time to wipe or clean foggy lenses. Visibility can help ensure safety, maximize productivity, and more.
2. Extended Performance
Anti-fog coatings are used to extend the physical and chemical performance of the substrate. Along with excellent abrasion and impact resistance, such coatings also aim to ensure long-lasting performance under extreme environmental conditions.
3. Increased Safety
Accumulation of fog/condensation on the surface of eyeglasses, safety glasses, and face shields can cause serious injuries or accidents due to limited vision. Anti-fog coatings help you and your employees maintain visibility, which reduces the risk of injuries or accidents.
Similarly, eliminating fog increases the safety of vehicles, including automobiles, planes, etc.
4. Compatibility With a Wide Range of Substrates
Anti-fog coatings can be applied to a variety of substrates, including plastics, glass, and metals. They also provide flexibility with applications that require a specialized approach for successful coating. For example, anti-fog-coatings can be applied to transparent plastic films for food packaging.
5. Enhanced Efficiency
In addition to safety and comfort anti-fog coatings can also provide efficiency benefits. For example, they can reduce the need and expense of heating or ventilation systems in vehicles and industrial environments. In other words, the coatings provide the control of for/condensation vs other systems.
Similarly, reducing the need to clean fog/condensation off of surfaces increases productivity. This is true whether it is employees or equipment.
Uses of Anti-Fog Coatings
These coatings are versatile. They can be applied to a variety of materials to maintain clear vision, ensure safety, and boost productivity/efficiency.
Here are a few of many real-life applications of anti-fog/anti-condensation coatings:
- Eyeglasses and Safety Goggles
- Reflectors and Signage
- Windshields, Visors, and Mirrors
- LED’s and Sensors
- Automotive Headlights
- Cameras and Computers
- Drones and GPS Systems
- Shields and Visors
- Commercial Freezer and Refrigerators
- Industrial Displays
- Greenhouse Glasses
Below we take a deeper dive into how various industries are leveraging anti-fog coatings to improve their product’s efficiency and performance.
Below we take a deeper dive into how various industries are leveraging anti-fog coatings to improve their product’s efficiency and performance.
1. Optical Industry
From eyeglasses to camera lenses, almost every optical device needs anti-fog coatings. They are not only useful for maintaining clear vision, but also for making the lenses scratch and abrasion-resistant.
2. Sports Industry
Fog accumulation and blurred vision can lead to serious safety concerns. This is true during activities such as cycling, swimming, racing, karting, hiking, skiing, and more. Anti-fog coating helps the sporting industry (and athletes) eliminate those issues. Eliminating fog and enhancing vision helps to enrich the experience of various activities. In addition, these coatings can help to boost an athlete’s overall performance during a game.
3. Automotive Industry
Weather changes instantly lead to windshield fogging, which makes it nearly impossible to see. As a result, anti-fog coatings are beneficial whether you are driving in humid, rainy, or cold conditions.
These coatings have revolutionized the automotive industry with improved visibility and enhanced safety. They also reduce energy consumed by defog systems.
4. Aerospace Industry
NASA was the first to address the need for anti-fog coatings and additives when an astronaut stumbled during a spacewalk. The cause was a continually fogged faceshield, leading to impaired vision.
It led to the development of a formulation that solved the problem and became the base for modern anti-fog coatings. Nowadays, most aerospace and aviation equipment, including windshields, canopies, and navigation systems, actively use anti-fog coatings.
5. Medical Industry
Anti-fog coating is used to enhance the efficiency of eyewear, such as visors and glasses used by surgeons and medical staff.
Fogging on protective eyewear during critical medical procedures can lead to major issues. Continued transparency and unimpaired vision are invaluable in maintaining precision throughout such procedures.
Hydromer® Anti-Fog and Anti-Condensation Coatings
At Hydromer, Inc. we leverage decades of experience developing hydrophilic coatings for medical devices to produce innovative heat-stable, anti-fog coatings. In addition to their excellent superhydrophilic properties, our coatings enhance the aesthetics and surface feel of the substrate.
We offer ready-made anti fogging/condensation control coatings, which include:
1. Luxere® Anti-Fog/Condensation Control Coating
Luxere is Hydromer’s best-selling heat-stable, anti-fog and condensation control coating. It is perfect for applications that require enhanced water-sheeting and fog-reduction features.
This coating is most popular among the eyewear manufacturers designing anti-fog eyeglasses and safety goggles. In addition to optical applications, it is useful for sports equipment, electronics/sensors, navigation systems, LEDS and optics, process manufacturing machines, gauges, and more.
Luxere can be applied to various materials, including Acrylic, Glass, Silicone, PET, Polycarbonate, PVC, Stainless Steel, and more.
Application methods include roll, dip, curtain or HVLP spray coating.
Contact us for more information or download our Luxure® Product Info Sheet to learn more.
2. Brillianz® UV Stable Anti-Fog/Condensation Control Coating
Brillainz is our cutting-edge, heat and UV-stable, anti-fog and condensation control coating. This coating is used by industry-leading automotive and aerospace equipment manufacturers. It is extremely useful to build robust products that can withstand extended exposure to sunlight while preventing fogging and maintaining clarity. Brillianz is effective regardless of fluctuating temperature and weather conditions.
This coating is optimal for products that are placed outdoors and/or continuously exposed to sunlight. That is because it is both UV and heat-stable. As a result, it is designed to maintain transparency and resist yellowing over an extended time.
Contact us for more information or download our Brillianz® Product Info Sheet to learn more.
Get in Touch with the Hydromer Anti-Fog Coatings Team
Are you looking for specialized hydrophilic coating solutions for anti condensation, medical, industrial, and other applications? Contact Hydromer for questions and information by clicking here or using the form below.
We offer the following support services to our clients:
- In-house contract coating services
- Contract research and development (R&D) services
- Specialized analytical testing
- Custom machine building
- Turn-key operations
- Technology transfer services
- Technical consulting and support services
