One stop solution for industrial packaging products which confirm to international standards
It is our companies flagship product - "Eco-desiccant"
Desiccant is a substance which is very hygroscopic (adsorbs moisture from air) in nature. There are different kinds of such desiccants available, however only few would serve your purpose.
We have our "Eco-desiccant" (Clay desiccant) which is one of the most efficient desiccants available in the market.
The shipping products around the world come across different temperatures & humidity conditions. These variations cause damage to cargo due to moisture. Please note, every year thousands of containerized cargos are damaged by moisture problems. Metal parts arrive corroded, cardboard boxes mould & wet, food commodities are found to be unfit for consumption.
The root cause of moisture damage in container transport is the simple fact that warm air can hold more moisture than cold air i.e. when temperature decreases the moisture in air gets condensed to water molecules. It's like dewy grass in morning after a cool summer night as an example. Thus when the temperature in the container changes, damaging moisture conditions arises. The only remedy is to keep the air inside the container & inside packages dry. These desiccants controls the moisture level in containers, crates, boxes & so on.
Moisture damage happens even where there is no condensation. Many grades of steel will start to corrode at a relative humidity of about 70%. Mould growth could begin after even a short period over 80%. The fungus growth on wood material is due to this moisture in the container.
The only remedy is to keep the air inside the container dry. The first thing to do is to ensure that the cargo and all the packaging are as dry as possible. A wet container floor or some pallets stored in the rain may be enough to ruin a cargo.
No container is airtight whatever you do, it will "breathe" as a result of temperature cycles. When the air inside the container cools, the pressure drops. Air and moisture moves in from the outside to equalize the pressure. The opposite happen when the air inside the container heats up, but it is easy to show how a repeating cycle of breathing can cause a buildup of moisture inside he container, especially if there is absorbing packing materials. Using a container with good seals and vents taped shut will slow down, but not stop- the "container breathing".
Packaging and wrapping the goods in plastic foil will not necessarily help. Moisture migrates quite quickly through most types of plastic foil. Even if a moisture proof foil is used, there could still be a problem since the sealed package then in effect becomes a "mini-container" subject to the same processes as the container.
What causes condensation in your container?
Important Technical information
The following sources must be taken into consideration with regard to sweat formation in the container :
Temperature & water vapor content of the air Mollier h/x diagram.
Some fundamental product information issues need to be brought to mind for the following explanations.
Air always contains a certain proportion of water vapor, approx. 3 g/m³ in cold, dry air, as much as 30 g/m³ in warm, humid air. This is only a small proportion, amounting to at most 3% of the mass of the air, but has a considerable meteorological impact, as is clear from the day to day changes in the weather.
Decisively, the atmosphere can only contain a certain quantity of water vapor, the saturation content, which is dependent upon temperature. The hotter is the air, the more water vapor it may contain.
Mollier h/x diagram
Once the saturation content is reached, no further water can evaporate. Relative humidity is now 100%. A relative humidity of 60% means that air contains 60% of the saturation content.
The lower the relative humidity, the more intensively does water vapor adsorption proceed, so bringing about a drying action.
One clear parameter which indicates the risk of sweat formation is the dew point temperature of the air. This is the temperature at which the water vapor contained in the air reaches its saturation content and, if cooling continues, condensation occurs.
If the dew point temperature is known, it is possible to estimate the risk of sweat. The interrelationships between these variables are presented in diagrams. Fig. 1 shows a Mollier h/x diagram which is very well suited to such conversions.
The temperature values, i.e. air and dew point temperature, can be read from the Y-axis, while the mixture ratio x (g/kg) can be read from the X-axis. The mixture ratio x states how much water vapor one kilogram of dry air contains.
The curves running from the bottom left to the top right indicate the relative humidity in 10% increments. The bottom curve applies to a humidity of 100% and is thus known as the saturation curve. The position of a given mass of air within these coordinates must always be defined by at least two values, one of which should always be the air temperature. The second coordinate is then determined by the mixture ratio x, relative humidity or by the dew point.
Examples of the use of a Mollier h/x diagram
The following three examples show how, starting from the known values, the others are determined. All the points from which the results are read off are indicated with an arrow in the Figure.
We are the manufacturers of "Eco-desiccants" having manufacturing facilities in Pune. "Eco-desiccant " is environmental friendly moisture adsorbing material having vigorous adsorption capacity over large temperature range i.e. it removes moisture from air very aggressively.
The big size pouches ( 1Kg- 1.5 Kg) are called as " Eco-desiccant Container dry pouches".
Container Dry pouches has a large adsorption area as water can be adsorbed from both sides of the bag. This results in a very high adsorption rate.
The adsorption characteristics of Clay + additives provide Container dry with a superior adsorption capacity, even at low humidity levels, and the ability to effectively protect cargo throughout the entire voyage.
A high equilibrium moisture adsorption capacity of more than 70% at 99% RH.(25°C) ensures that the goods will be protected for a longer period over transportation time from the fluctuations of temperature and humidity conditions of the container.
Pouches / Quantity needed
The number / quantity may vary depending on the length of the voyage, the range of temperatures encountered and the type of cargo protected, free air space in container, nature of packaging material used (wooden pallets, corrugated boxes) etc. However, on case to case basis we can advise suitably to customers based on our experience.
Standard packaging Sizes
Desiccant Pouches / Standard packaging Sizes
|Sr No.||Wt of pouch||Pouch fabric material||Dimensions of pouch
(W mm x Ht mm)
|1||5 gm||Tyvek||42 x 52|
|2||10 gm||Tyvek||42 x 72|
|3||20 gm||Tyvek||52 x72|
|4||50 gm||Tyvek||80 x100|
|5||100 gm||Tyvek||90 x 120|
|6||500 gm||Tyvek||140 x 200|
|7||750 gm (with hanger)||Outside : PP Inside : Tyvek||PP : 200 x 270 , Tyvek : 195 x 260|
|8||1 Kg (with hanger)||Outside : PP Inside : Tyvek||PP : 200 x 270 , Tyvek : 195 x 260|
|9||1.5 Kg (with hanger)||Outside : PP Inside : Tyvek||PP : 200 x 350 , Tyvek : 195 x 340|
Hanger dimensions :
For domestic requirements :
Our standard packaging includes : For 10 gm to 1.5 Kg pouches
LLDPE bag containing 1 kg desiccant pouches (260 x 370 mm) + Big size LLDPE bag (590 x 980 mm) + Outside Woven bag laminated (590 x 1000 mm)
Each bag size : 30 Kg . This kind of packaging ensures full protection for these desiccant bags from outside moisture .
For export requirements :
Alternative 1 : Pallet packaging - Euro pallets i.e. Ply wood pallet ( no fumigation required )
Alternative 2 : Loose 30 kg bags in container
|Details||Size of pallet||No. of
30 Kg bags
|Dimensions of pallet
pallets in 20'
|Pallet packing :
For 5/10 / 20 gm small pouches
|1000 x 800 x 135mm (ht)||14||420 kg||1000 x 800 x 990 mm (ht)||28||11760 Kg||12400 Kg|
|Pallet packing :
For 1- kg Container dry pouches
|1000 x 800 x 135 mm (ht)||12||360 kg||1000 x 800 x 990 mm (ht)||28||10080 kg||10724 kg|
|Pallet packing : 1.5 kg||1000 x 800 x 135 mm (ht)||10||300kg||1000 x 800 x 990 mm (ht)||28||8400 kg||9044 kg|
|Loose bags in container
- For 10/20 gm small pouches
|-||-||-||12600 kg||12650 kg|
|Loose bags in container
- For 1 - kg container dry pouches
|-||-||-||15120 kg||15170 kg|
|Loose bags in container
- For 1.5 kg container dry pouches
|-||-||-||12960 kg||13110 kg|
Product damage due to moisture
Following photographs shows the extent of damage (after reaching to final destination overseas) due to moisture if proper desiccants are not used during packing of final product.