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Fogging on glass is a problem that affects many people and can be particularly annoying when driving. This is largely because the humidity in the air can cause water to form droplets on the surface of the lens, which causes a fogging effect.
There are many ways that you can try to combat this problem, but the most effective one is by using an anti-fogging agent. This chemical is commonly used on goggles, dive masks, and car visors to prevent the condensation of water in small droplets.
The most common anti-fogging agents are surfactants that minimize the surface tension on the glass to prevent the condensation of water in small droplets. These treatments were originally developed by NASA during the Gemini program and are now used in a variety of optical applications.
Food packaging is another important application for anti-fogging additives. Foods that are stored at a high moisture content can cause condensation on the surface of the film, which can lead to fogging.
These films may be filled with hot or warm foods that are then cooled to store in a refrigerator. The condensation will cause the package to become foggy and ruin the shelf appeal of the product.
Anti-fogging agents are used in conjunction with anti-static coatings to ensure the clarity and transparency of plastics used in food packaging. They can be used in conjunction with extruded or thermoformed films and are generally applied before the film is longitudinally oriented or before the film is oriented transversally. They are environment-friendly, easily biodegradable and comply with EC-Directives on the antistatic finishing of plastics in food packaging.