PROPASIL
Desiccant silica gel with adaptive absorption capacity for effective protection in any environmental condition.
PROPASIL is a desiccant silica gel designed to provide effective protection against moisture even under the most severe environmental conditions. Made from pure amorphous silica, it comes in the form of a hard, semi-transparent granulate with a unique characteristic: its absorption capacity adapts to environmental conditions consistently ensuring maximum protective effectiveness.
Propasil effectively reduces the dew point inside packaging during transport and storage, fully preserving the quality and properties of products that moisture could alter or damage. The PROPASIL Micro product range offers ultra-compact solutions from 0.5 to 3 grams for small spaces, while standard formats in sachets, chains, panels, canisters and capsules cover every industrial need.
For applications in specific sectors, such as pharmaceutical and food, where contamination issues may arise, special materials that meet the requirements of the FDA (Food and Drug Administration) and Regulations (EC) No. 1935/2004 and 10/2011 can be used.
In particular, PROPASIL desiccant sachets with Tyvek® coating produced by DuPont have been registered with the FDA agency by subscribing to a Drug Master File (DMF) type III for pharmaceutical applications. PROPASIL is certified according to NFH and MIL standards.
Beyond pharmaceutical and food sectors, PROPASIL represents the professional choice for electronic equipments, medical devices, medicine or supplement bottles, optical instruments, leather goods and all valuable products that require reliable long-term protection.
Problems solved by this product
Desiccant bags can be stored for a long time, the important thing is that the packaging with which are supplied is always intact. Propagroup put in every box a PROPASECARD humidity indicator so as to allow who open the packaging to immediately understand if desiccants have been submitted to humidity, or if they are still usable.
The desiccant salt sachets must be inserted inside the packaging of the product to be protected. The desiccant clay contained in the sachet absorbs moisture and therefore reduces the dew point inside the packaging. Consequently, the product retains its qualities and usage properties and is protected from any damage caused by moisture. Moisture can alter the product's qualities.
Desiccant bags have to be used inside the packaging where you have the product to protect. The desiccant argile inside the bag absorbs humidity and
I sacchetti di sali disidratanti devono essere inseriti all'interno dell'imballo del prodotto da proteggere. L'argilla disidratante contenuta nel sacchetto assorbe l'umidità e diminuisce quindi il punto di rugiada all'interno del packaging. Di conseguenza il prodotto conserva le proprie qualità e proprietà di utilizzo e viene protetto da eventuali danni causati dall'umidità. L'umidità può alterare le qualità del prodotto.
To understand the right quantity of desiccant bags to protect products from humidity, is important to consider some variables. Here following some of the most important:
- Air volume trapped inside the packaging. Air trapped inside the packaging is the main responsible of condensation that, thanks to thermal shock, can develop during transportation. To avoid this kind of problem, we suggest to use desiccant bags.
- The external packaging used. When a barrier material like our Propametic is used, the quantity of desiccant units to use is lower compared to a packaging made of plastic material.
- Type of transportation. The most dangerous are the maritime transportations via container, because of possible temperature changes. A container exposed to the sun and to weather conditions for a long time, undergo to marked temperature variations that affect packaging inside it. In this case it will be very important to protect products with a good barrier material and with an adequate quantity of desiccant bags.
- The protection duration. Another important variable to consider is the protection duration, that is the transportation and storage duration that the packaging is going to face.
There are many other variables to consider, for this reason we suggest to consult our technicians.
Contact us: export@propagroup.com
Desiccant salt bags are made from a permeable non-woven fabric, which allows water vapour to be absorbed inside the bag itself. This non-woven fabric, in accordance with DIN 55473, can be divided into two classes depending on the amount of powder that can be released from the desiccant bag itself:
• Class A: Slight dust leakage tolerated (must not release more than 10 mg of dust per desiccant unit);
• Class B: Total dust retention (regardless of the desiccant units, the bag must not release more than 1 mg of dust).
Desiccant bags can also be manufactured with other fabrics approved for food contact, such as Tyvek.
Yes, all Propagroup desiccants (PROPASEC, PROPASIL, PROPADRY) are free from DMF-Dimethyl Fumarate. It is possible to ask a certification of absence of this substance contacting us. export@propagroup.com
Anti-humidity desiccants are indispensable for guaranteeing suitable protection and preservation of the products over time. Propagroup has made a name for itself in the market due to its line of desiccants for controlling and protecting against the elements during the transportation and handling of goods. Propagroup developed anti-humidity products, because they are aware that changes in temperature can damage finished products and create considerable hardship for companies and their customers.
These products were developed to prevent and avoid this type of damage to goods, providing the tools necessary for keeping under control and eliminating any harmful agents. The range of desiccants free of dimethyl fumarate (DMF) includes:
• Propasec, which has a large capacity of absorption at a limited cost, is ideal for packaging electronic, pharmaceutical, and food items, etc.
• Propasil, desiccant bags or capsules of silica gel, used mainly in the chemical and pharmaceutical industries.
• Bags consisting of synthetic zeolites (molecular sieve) used when a large amount of moisture needs to be absorbed very quickly.
• Propacontainer, in 1 or 2 kg bags, for keeping freight containers below the dew point.
• Propadry and Propadry Plus, to prevent the formation of condensate in freight containers and in packing.
Propagroup also offers humidity and temperature indicators, barrier material, and Stirofilm. The barrier material Propametic is obtained by lamination and acts as a barrier against water vapor. Stirofilm is a technical multilayer film used to cover and line transport and storage crates; it is also extremely resistant in case of stacked crates.
Monitoring systems find strategic application in the pharmaceutical industry to maintain drug efficacy, in the food sector to preserve the cold chain, in precision electronics where shocks and vibrations can compromise delicate components. Other critical sectors include the transport of artworks, scientific instruments, medical equipment and all high-value products that require optimal transport conditions and complete documentation of their status during handling.
Silica gel is normally used in the pharmaceutical, food and electronics sectors and in all areas where it is necessary not to have a dispersion of powder of any kind or in cases in which the available space permits the use of only a small bag, albeit with a high absorption capacity. Clay is used in all other sectors, in various types of packaging with different sizes. In any event, we invite you to contact our agents in order to evaluate your specific needs and find the ideal solution for protecting your products in the most effective and efficient manner.
Contact us : export@propagroup.com
Desiccant bags for packaging are the most practical and flexible solution to prevent moisture circulation in enclosed spaces. Propagroup has many years of experience in the production of desiccant bags, capable of absorbing and neutralizing moisture and condensation in packaging or inside a container. Our desiccants include a wide range of products that, in addition to guaranteeing a high degree of protection, also ensure total respect for the environment, combining excellent absorption capacity with very low costs.
In the packaging field is the reduction of the dew point inside the packaging or container to eliminate humidity or guarantee preservation of qualities and properties of use of the product packed. Desiccant bag is an example of product absorbing humidity inside the packaging.
In physical chemistry absorption is the incorporation of a substance in one state into another of a different state (e.g. liquids being absorbed by a solid or gases being absorbed by a liquid).
Source: wikipedia | license
In the field of packaging protection we can use adsorbtion to define:
- the diffusion of VCI molecules inside the packaging
- the humidity attraction process from the raw material, like for example unpacked argile or silicagel
Adsorption is the adhesion of atoms, ions, biomolecules or molecules of gas, liquid, or dissolved solids to a surface.
Source: wikipedia | license
In the protective packaging sector we can speak of adsorption to define:
- the phenomenon of diffusion of VCI molecules in the packaging
- the process of moisture attraction by raw materials, such as clay or unpackaged silica gel
In the physical chemistry field, adsorption is generally a particular type of absorption that occurs only at the surface.
Source: wikipedia | license
Bentonite is a clayey mineral made of montmorillonite, calcium or sodium. In the packaging field bentonite is used as desiccant in bags of non-woven tissue to eliminate humidity inside packagings.
Propasecard humidity indicators are cobalt chloride free.
Cobalt chloride is an inorganic compound of cobalt and chlorine, with the formula CoCl2. It is usually supplied as the hexahydrate CoCl2·6H2O, which is one of the most commonly used cobalt compounds in the laboratory. The hexahydrate is deep purple in color, whereas the anhydrous form is sky blue. A blend would be mauve. Because of the ease of the hydration/dehydration reaction, and the resulting color change, cobalt chloride is used as an indicator for water in desiccants. Niche uses include its role in organic synthesis and electroplating objects with cobalt metal. It has been classified as a Substance of very high concern by the European Chemicals Agency.
Propagroup product range for humidity protection also includes a specified desiccant to be used inside container, PROPADRY.
An intermodal container or freight container is a reusable transport and storage unit for moving products and raw materials between locations or countries; the terms container or box may be used on their own within the context of shipping.
Source: wikipedia | license
A desiccant is a hygroscopic substance that induces or sustains a state of dryness (desiccation) in its local vicinity in a moderately well-sealed container. Commonly encountered pre-packaged desiccants are solids, and work through absorption or adsorption of water, or a combination of the two. Desiccants for specialized purposes may be in forms other than solid, and may work through other principles, such as chemical bonding of water molecules. Pre-packaged desiccant is most commonly used to remove excessive humidity that would normally degrade or even destroy products sensitive to moisture. Drierite, Silica gel, calcium sulfate, calcium chloride, montmorillonite clay, and molecular sieves are commonly used as desiccants.
Source: wikipedia | license
Desiccant clay is the name commonly used to define calcium bentonite (montmorillonite), a naturally occurring material that is chemically inert, non-corrosive and composed mainly of calcium and magnesium aluminum silicates.
Desiccant clay is the common name to call calcium bentonite (montmorellonite), a material of natural origin and chemically inert, non-corrosive and mainly consisting of magnesium and calcium silicate aluminium.
Humidity is a term for the amount of water vapor in air, and can refer to any one of several measurements of humidity. Formally, humid air is not "moist air" but a mixture of air and water vapor, and humidity is defined in terms of the water content of this mixture, called the Absolute humidity. In everyday usage, it commonly refers to relative humidity, expressed as a percent in weather forecasts and on household humidistats; it is so called because it measures the current absolute humidity relative to the maximum. Specific humidity is a ratio of the water vapor content of the mixture to the dry air content. The water vapor content of the mixture can be measured either as mass per volume or as a partial pressure, depending on the usage.
A molecular sieve is a material containing tiny pores of a precise and uniform size that is used as an adsorbent for gases and liquids. Molecules small enough to pass through the pores are adsorbed while larger molecules are not. It is different from a common filter in that it operates on a molecular level and traps the adsorbed substance. For instance, a water molecule may be small enough to pass through the pores while larger molecules are not, so water is forced into the pores which act as a trap for the penetrating water molecules, which are retained within the pores. Because of this, they often function as a desiccant. A molecular sieve can adsorb water up to 22% of its own weight.[1] The principle of adsorption to molecular sieve particles is somewhat similar to that of size exclusion chromatography, except that without a changing solution composition, the adsorbed product remains trapped because in the absence of other molecules able to penetrate the pore and fill the space, a vacuum would be created by desorption. Often they consist of aluminosilicate minerals, clays, porous glasses, microporous charcoals, zeolites, active carbons, or synthetic compounds that have open structures through which small molecules, such as nitrogen and water can diffuse. Molecular sieves are often utilized in the petroleum industry, especially for the purification of gas streams and in the chemistry laboratory for separating compounds and drying reaction starting materials. The mercury content of natural gas is extremely harmful to the aluminium piping and other parts of the liquefaction apparatussilica gel is used in this case. Methods for regeneration of molecular sieves include pressure change (as in oxygen concentrators), heating and purging with a carrier gas (as when used in ethanol dehydration), or heating under high vacuum. Temperatures typically used to regenerate water-adsorbed molecular sieves range from 130 °C to 250 °C
Source: wikipedia | license
Silica gel is most commonly encountered in everyday life as beads packed in a vapor-permeable plastic. In this form, it is used as a desiccant to control local humidity in order to avoid spoilage or degradation of some goods. Because of poisonous dopants (see below) and their very high absorption of moisture, sílica gel packets usually bear warnings for the user not to eat the contents. If consumed, the pure silica gel is unlikely to cause acute or chronic illness, but would be problematic nonetheless. Food-grade desiccant should not include any poisons which would cause long-term harm to humans if consumed in the quantities normally included with the items of food.
Source: wikipedia | license
In many items, moisture encourages the growth of mold and spoilage. Condensation may also damage other items like electronics and may speed the decomposition of chemicals, such as those in vitamin pills. Through the inclusion of silica gel packets, these items can be preserved longer.
