Desiccant solutions for air-conditioning systems, electric cars and alternative vehicle drives

Customised solutions to protect automotive components against moisture. In addition to desiccant solutions for mobile and fixed air-conditioning systems in cars, trucks, buses and vans, which professionally protect against moisture problems /related to cooling systems, TROPACK desiccant bags are also used to protect electric and alternative vehicle engines and their components.


Automotive desiccant bags

As desiccants designed for use in air-conditioners, these bags contain molecular sieves made by leading manufacturers, and tested and approved for the automotive industry (IMDS registration and tolerance studies available). In addition to these molecular sieves, white gel and clay have also established themselves as other possible desiccants for electric engines.

The special non-woven bag material used in air-conditioning systems meets the highest quality requirements (appropriate tests for aging, stability and tolerance available). We also offer a wide range of standard dust-proof fleeces for other automotive-related applications.

Benefits for you

  • Highly resistant non-woven
  • Extreme seam resistance on bags (including as tubuluar bag compared to a four-sided seam)
  • Suitable as a filter in cooling systems
  • Very low handling and installation costs
  • No corrosion
  • Increased system reliability
  • Protection for attached parts

Tracer Wafer™

Automotive desiccant bags with integrated leak detection


The Tracer Wafer™ is the perfect solution to easily and reliably detect leaks in air-conditioning systems. Integrated into the bag, they contain a fluorescent dye which only enters the system through the coolant after final assembly when the air-conditioning system is started up.

  • Easy and low-cost, as no production changeover required
  • Enables an additional quality check in production
  • No additional work involved to integrate the dye into the overall system
  • Compatible with all cooling agents and lubricants, including hybrid A/C systems and the new R-1234yf  cooling agent 


Customised solutions

We can offer custom solutions tailored to your specific requirements. Our modern fleet of machinery and extensive testing and measurement equipment mean we can flexibly cater to even the most challenging of orders.

Bags for use in air-conditioning systems can have widths ranging from 30 to 150 mm. Desiccants for alternative power units can be made in widths of up to 200 mm. Bag lengths can be anything up to 350 mm. Special designs can of course be accommodated upon request.

 Contact us – we’ll be glad to advise you.


Consulting | Service | High availability

TROPACK provides desiccant bags, desiccant cartridges, desiccant capsules and aluminium-composite film for a wide range of applications.
Custom designs tailored to your specifications are also available. Contact us for advice:

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TROPACK – you can count on us

TROPACK products comply with the highest quality standards according to DIN 55473 (12/2015). Our desiccants meet the relevant requirements established by the European Union (e.g. EC 1935/2004) and the US Food & Drug Administration FDA (e.g. 21 CFR part 175/part 177).

TROPACK quality standards are regularly verified in the form of DIN 55473 and ISO 9001 certifications.That’s something industry, the retail market and consumers alike can count on. TROPACK desiccants are food-safe, contaminant-free, odourless and renewable. (We expressly refrain from using dimethyl fumarate (DMF)!)

We’ll be glad to answer any questions you may have!

German-quality desiccants

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Vor dem Polstück 8
35633 Lahnau-Waldgirmes

Tel. +49 (0)6441 21089-0