Desiccant Paper

Desiccant paper used to keep a battery pack moisture-free

IMPAK’s multiple product lines of Desiccant Paper continue to offer some of the most diverse solutions to complex packaging and sorbent problems. Desiccant paper offers high capacity adsorption within a semi-rigid structure, which speaks to its incredible versatility in the packaging industry. Our desiccant paper feature millions of adsorbent particles contained in a semi-rigid cellulose fiber matrix, which enables fast drying and extraordinary versatility in package design.

The finished pieces can be machine cut to meet a wide variety of technical drawing specifications or any specialized functions. With 2 grades (Grade 460 and Grade 105) and thicknesses of silica gel impregnated cellulose fibers and 1 industrial carbon-impregnated paper, IMPAK now offers 3 distinctly different types of sorbent loaded paper substrates to meet a wide variety of applications.

Many desiccants are rated by their adsorption or pick up by weight, but in the case of Grade 460 desiccant paper which is 67% silica gel by weight, the pick up is calculated at 0.07 grams of water vapor adsorbed per square inch (0.07g/in² or 10.12 grams per square foot (10.12g/in²). Grade 460 is also a nominal 54 mils thick or 0.054", making it an ideal desiccant option when circumstances do not permit a standard pillow pack.

Active vs. Inactive - What's the Difference?

Because desiccant paper adsorbs moisture from the air, its default state is inactive, meaning that it is saturated with moisture (although it will still feel dry to the touch). In order to make the paper active, the moisture must be baked out in an oven and the paper sealed in high-barrier packaging in order to prevent re-adsorption of ambient moisture.

Activation: One minute at 500°F / Five minutes at 300°F

Anti-fog desiccant paper inserts used in a camera

Advantages:

• Can be cut into different shapes and sizes to suit your application.
• Easy to apply drying agents that extract moisture from a large range of materials.
• Can be formed in a package to provide a uniform environment for moisture control.

Applications include:

• Electronic components, computer parts
• Lateral flow devices
• Bio-medical instruments, diagnostic test kits
• Pressed flowers
• Biohazard adsorbent pads
• Aerospace component storage
• Anti-condensation for Lensed devices
• Pharmaceutical goods storage (blister packs)
• Instrumentation, components packaging