What is the difference between clay and silica gel?

Clay desiccant is a material of natural origin. It is chemically inert, non-corrosive and is composed mainly of calcium and magnesium aluminium silicates. Thanks to its absorption capacity, clay reduces the dew point inside packaging, making it possible to protect the quality and properties of products against moisture attacks.

Silica gel is an excellent drying agent and is thus used as a desiccant and for local humidity control. Although its action is called "desiccant", in reality the physicochemical process whereby water vapour is removed from the air consists in an operation of adsorption: molecules of water vapour bind to the surface of the silica gel, which should not be understood as only the outer surface, but rather the total surface: silica has considerable porosity, and this means a larger total available area for the exchange of matter, that is, a fairly rapid dehumidification process. 

Antihumidity

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Are Propagroup desiccants free from DMF-Dimethyl Fumarate?

Yes, all Propagroup desiccants (PROPASEC,...

Is it possible to have desiccant bags with molecular sieve inside?

Yes, on request it is possible to produce...

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Is it possible to have desiccant bags with silica gel that changes color?

According to REACH regulation it is possible to...

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PROPASEC desiccant bags comply with which norms?

PROPASEC desiccant bags are certified and...

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Is it possible to control the humidity level inside the product packaging?

To control the humidity level it is necessary...

Which is the meaning of UD, the writing on desiccant bags?

The Desiccant Unit defines the product quantity...

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Propametic barrier foil is a multi-layer film?

Yes, Propametic barrier foil is an aluminium...

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Does Propagroup manufacture desiccant silica gel bags?

Propagroup is specialized in the manufacture of...