Susceptor

Susceptor

A susceptor is a material used for its ability to absorb electromagnetic energy. This energy is typically radiofrequency or microwave radiation used in industrial heating processes, and also occasionally in microwave cooking. The name is derived from "susceptance", an electrical property of materials that measures their tendency to convert electromagnetic energy to heat.

In microwave cooking, susceptors are built into paper packaging of certain foods, where they absorb microwaves which penetrate the packaging. This process raises the susceptor patch temperature to levels where it radiates strongly in the infrared. This infrared radiation then shines onto the food below, causing a "broiling" type effect (high skin heating), due to lower ability of infrared to penetrate foods, vs. microwaves. Conversion of some microwave to infrared is particularly useful for goods which require crust browning from infrared, such as frozen pies.

The susceptor (which may be located on examination from its gray or blue-gray color, which is different from paper) is the reason why these products carry instructions to microwave the the food while still inside its packaging. Susceptor-containing bands meant to be slipped onto foods (example, Hot Pockets) are also sold.

Among the first microwave susceptors marketed were those from the early 1990s in a product called McCain Micro Chips, which demonstrated a susceptor sheet which cooked French fries in a microwave oven. These are currently used in several types of packaging for heating and cooking products in microwave ovens.

Design

Susceptors are usually made of metallised film, ceramics or metals (aluminium flakes), etc.

See also

*Metallised film

External links

* [http://www.ameritherm.com/overview_susceptorheat.html "Susceptor heating" on commercial website]
* [http://home.c2i.net/metaphor/mvpage.html Casting bronze using a domestic microwave oven]
* [http://www.foodproductdesign.com/articles/462/462_0597CS.html Susceptor heating film on fast food package with carbon-based coatings]


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Look at other dictionaries:

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  • Susceptor — (lat.), 1) der etwas auf od. unternimmt; 2) in den römischen Provinzen zu der Kaiserzeit Leute, welche die Steuern in Empfang zu nehmen hatten …   Pierer's Universal-Lexikon

  • Susceptor —    • Susceptor,          назывался во времена Империи сборщик податей в провинции; сначала он назначался местными городскими куриями или сенатами, позже императорским правительством …   Реальный словарь классических древностей

  • susceptor — sus·cep·tor (sə sĕpʹtər) n. A metallic patch attached to microwaveable packages of food in which radiant energy produced in the patch by microwaves helps cook the food, often by browning its surface. * * * …   Universalium

  • susceptor — suscepˈtor noun (obsolete) A sponsor • • • Main Entry: ↑susceptible …   Useful english dictionary

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  • Popcorn bag — A popcorn bag can refer to either the bag in which popcorn kernels that have been popped in heated oil are served, or to a specially designed, microwavable bag that contains the popcorn, oil, and seasoning. Microwave popcorn bags The bag is… …   Wikipedia

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