Croda's anti-fogging additives for plastics allow water to spread into a continuous and uniform transparent layer of water on the surface of films. This results in improved light transmission and transparency which has benefits in both agricultural and food packaging applications.
What is fogging on plastic films?
Fogging is a term used to describe the formation of small water droplets on the surface of transparent film. Fogging most commonly occurs when there is a temperature differential between the inside and outside of an enclosed atmosphere.
How can Croda anti-fog additives help?
Our anti-fogging additives reduce surface tension which results in a thin and continuous layer of water of the surface. Our sustainable additives are 100% bio-based and are suitable for use in a variety of different polymer types and applications, as well as being available in different physical forms. Our long history of surfactant manufacturing means we have well-placed expertise to help you formulate the best solution for your application.
Anti-fog additives for food packaging
Improved fogging performance in PP food packaging
We supplied the manufacturer with Atmer 7373, a specially formulated anti-fog for polypropylene. When added at 3.75%, Atmer 7373 dramatically reduced fogging on the packaging. Over 95% of packages showed complete clarity and no droplet build up, with water droplets spread evenly in a continuous and transparent layer across the film.
Watch this demonstration video
Anti-fog benefits by Atmer
Demonstration of fogging in film with and without Atmer anti-fog additives.
Anti-fog additives for agricultural applications
Agricultural films are particularly challenging for anti-fogging additives as longevity of performance is key. Different climates as well as multi-layer films are some considerations that need to be taken into account when deciding on which additive and addition level to use.
The use of anti-fogging additives in agricultural films give a number of benefits, including:
- Improved light transmission resulting in higher plant growth rates, higher crop yield per plant and earlier crop maturity
- Reduced burning of plants and crop spoilage
- Reduced constant water dripping