Desiccant packs and sachets are more than just the little bags you get in your Tylenol bottles or shoe boxes. These small but strong bags come packed with moisture vapor adsorbing granules ready to protect even the largest machines or electronics. Our clay-activated desiccant is a naturally occurring adsorbent clay that is widely used in industrial packaging.
This desiccant falls within the MIL-STD-2073-E1 standard, meaning it is used to protect materials against environmentally induced corrosion and deterioration when used in conjunction with a Barrier foil bag.
How Do Desiccant Packs Work?
Desiccant is often contained in a Tyvek (™) pouch. This material is porous and allows the desiccant to pull in moisture vapor from the surrounding atmosphere. In order for desiccant packs to work to their fullest potential, they must be within an airtight sealed package (such as a barrier foil bag). This will make sure that no moisture vapor or oxygen is allowed to circulate within the package. Barrier bags and packaging is the perfect partner to desiccant pack because they offer the lowest moisture vapor transmission of any known flexible material. Desiccant works in conjunction with Barrier Foil packaging by mopping up any moisture vapor that may have been sealed into the bag during the sealing. Also adsorbing the small amount of moisture vapor that may transfer through the Barrier foil. Thus creating an absolutely controlled atmosphere.
Desiccant for Military applications here in the US must be certified to Mil-D3464 E.
How Do We Calculate The Amount Of Desiccant?
Here at 3D Barrier Bags, Inc we can calculate the exact amount of desiccant needed for the storage or transports of any of your goods so that you don’t have to. We do this by taking the size of the bag, transmission rates of the material, climate the bag will be stored in, ideal storage time and taking into consideration any dunnage in the bag that may have a retained moisture content. This conforms with British Standard 1133.
For temperate climates: W = 11ARM + DF
For tropical climates: W = 40ARM + DF
W = Weight in grams of basic desiccant
A = Area in square meters of the moisture vapor barrier
R = Water vapor transmission rate of the barrier in grams per square meter in 24 hours, measuring at 90% of RH and 38 ° C (100 ° F)
M = Maximum time in months of transit and storage
D = Weight in grams of blocking packaging, impact damping and any other hygroscopic packaging materials that are inside the barrier (including cardboard, timber, foam, etc.)
F = Factor, depending on the type of stowage
Looking to store or ship moisture-sensitive products? Contact us today for your moisture barrier packaging with desiccant packs.