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. Croda’s anti-fogging additives reduce surface tension which results in a thin and continuous layer of water of the surface.
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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 take place 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:
Food packaging benefits from anti-fogging additives by maintaining its clarity and transparency so the contents can be clearly seen by the consumer at the point of sale. By adding anti-fogging additives to food packaging films, condensed water droplets are spread into a thin layer rather than droplets. In general, food packaging only require short-term anti-fogging performance that lasts the lifetime of the packaged food.
We were approached by a polypropylene film manufacturer, supplying packaging for refrigerated salads in supermarkets. Using an alternative glycerol based anti-fog the supplier found that performance under cold fog conditions was especially poor, and that their customers were complaining about poor sales due to fog formation. Fog formation can mislead customers into believing that products have been on display for a long time.
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 layer across the film.
Croda offer a range of bio-based and biodegradable anti-fogging additive suitable for use in biopolymer applications.
Atmer 100 is a liquid sorbitan ester for use as an anti-fogging agent in PE and EVA food wrap films.
Sorbitan ester
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Atmer 103 is a sorbitan ester in bead form effective as an anti-fogging agent in both LDPE and PVC agricultural films.
Sorbitan ester
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Atmer 185 is a glycerol ester in microbead form giving long lasting anti-fog properties especially in EVA agricultural films.
Glycerol ester
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Atmer 1440 is a liquid glycerol ester which is recommended for use as an anti-fogging agent in polyolefin food wrap.
Glycerol ester
View product detailsOur anti-fogging additives are perfect for use in film production to give performance benefits in end-use applications such as agricultural and food packaging films.
Atmer 103 is a sorbitan ester in bead form effective as an anti-fogging agent in both LDPE and PVC agricultural films.
Sorbitan ester
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Atmer 185 is a glycerol ester in microbead form giving long lasting anti-fog properties especially in EVA agricultural films.
Glycerol ester
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Atmer 1440 is a liquid glycerol ester which is recommended for use as an anti-fogging agent in polyolefin food wrap.
Glycerol ester
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Atmer 7373 is a unique anti-fog concentrate designed especially to deliver outstanding anti-fog performance in both hot and cold food packaging. ...
Proprietary
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Atmer 7326 is a 50% concentrate in PE containing a long lasting anti-fog agent for use in greenhouse films, especially 3 layer films.
Proprietary
View product detailsWe do offer a number of products which can be applied to the surface as an external coating to give anti-fogging performance.
Atmer 110 is an ethoxylated sorbitan ester in liquid form. It is an external anti-static agent effective in all polyolefins. Atmer 110 can also be ...
Ethoxylated sorbitan ester
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Atmer 116 is a liquid ethoxylated sorbitan ester recommended as an anti-fogging agent in food wrap applications. It is highly effective when used i...
Ethoxylated sorbitan ester
View product detailsOur range of anti-fogging additives for PVC applications work by migration to the polymer surface. They are suitable for use in both food and agricultural applications.
Atmer 103 is a sorbitan ester in bead form effective as an anti-fogging agent in both LDPE and PVC agricultural films.
Sorbitan ester
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Atmer 121 is a modified liquid glycerol ester for use as an anti-fogging agent in PE and EVA films.
Glycerol ester
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Atmer 1010 is a glycerol ester paste which is recommended for use in combination with Atmer 116 as an anti-fogging agent in food wrap film. It also...
Glycerol ester
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