Desiccant use without inflowing ambient air

In product packaging – or when goods are packed in cardboard boxes or export crates – items such as electronics, household goods, automotive parts, foodstuffs, leather goods, machine components, medical devices, metal parts, furniture, injection-moulded parts, textiles, 3D printing filaments and many more should be protected against moisture damage during storage and transport. This applies both to goods enclosed in additional plastic packaging and to breathable packaging concepts that deliberately avoid supplementary films or PE bags. To prevent mould, electrical damage, corrosion, mildew stains or unpleasant odours from developing inside the packaging, so-called inbox desiccants are used.

For packaging without an additional film barrier layer, the BoxDryy® high-performance desiccant is suitable, offering particularly strong moisture absorption. When additional foil packaging is used, the proven Desi Dry silica gel packets are a suitable choice. They are available in various sachet sizes, wrapping materials, and with or without saturation indicators. Or you can use our CertiDry desiccant according to DIN 55473. The latter contain dry clay and their minimum absorption capacity, the packaging units or even the labelling are stipulated in the above-mentioned standard. Browse through our best-practice examples or contact us and tell us about your specific application. Together we will find a solution for your needs.

Electronics packaging without film

Electronics packaging without film

Medical equipment

Medical equipment

Lab Diagnostics

Lab Diagnostics

Animal Feed

Animal Feed

Injection Moulded Parts

Injection Moulded Parts

3D Printing

3D Printing

Optical Lenses

z.B.

Optical Lenses

Undertaker Equipment

Undertaker Equipment

Electronics packaging without plastic film

More and more manufacturers of high-quality electronic products are switching to plastic-free shipping packaging. Instead of polybags or protective films, they are using custom cardboard inlays made from paper-based materials. This shift not only supports sustainability goals, but also strengthens brand image among environmentally conscious end customers. At the same time, it brings new challenges in terms of product protection – especially against moisture.

Challenge: Silica gel desiccants are not sufficient without additional film

Condensation during transport or under changing climatic conditions can damage sensitive surfaces, lenses, components or contacts. Commonly used silica gel sachets are no longer effective in such open packaging systems, as their moisture absorption performance is insufficient without an additional film barrier.

Solution: BoxDryy® as the answer to reduced packaging with maximum protection

The solution lies in replacing silica gel sachets with the high-performance desiccant BoxDryy®: it absorbs multiple times its own weight in moisture and binds it into a solid mass. This ensures effective moisture protection for electronic products directly within the breathable interior of the packaging – without the need for a barrier layer. Both packaging effort and the use of protective films can thus be effectively reduced.

High-performance desiccants protect electronic products without additional plastic film packaging

Desiccant in Packaging of Medical Equipment

Wearing a filtering facepiece (FFP) can reduce the risk of harmful aerosols being emitted or absorbed through the air we breathe for the wearer and those around them. To protect so-called particle-filtering half-masks from excessive humidity during transport and storage, a ThoMar customer uses Desi Dry silica gel packets enclosed in the foil bag serving as subpackaging.

Silica gel packets are enclosed in the packaging of FFP masks.

Keeping Lab Test Kits Dry

ThoMar OHG supplies several manufacturers of corona tests with desiccants. According to the manufacturers, test kits from Germany are shipped worldwide. Each test-kit is enclosed in an airtight sealed edge bag made of composite film with a silica gel packet in pharmaceutical quality. The desiccant particularly protects the sensitive detection reagent from excessive humidity during the entire logistics chain.

Reagents, e.g. for the detection of Sars-CoV-2, are very sensitive to moisture.

Keeping Animal Feed Dry

A manufacturer of special feeds for farm animals produces, among other things, tablets that are individually packed in aluminium composite bags. The tablets are produced at 20% relative humidity and are highly hygroscopic. The project manager turned to the ThoMar team because the tablets absorbed too much of the ambient moisture during transport and storage and crumbled when removed from the bag. After an initial test (adding desiccant to the outer carton) did not show sufficient effect, it was finally decided to pack 20 of the individual tablet bags in another aluminium composite bag and to enclose a Desi Dry silica gel packet.

A desiccant is enclosed with each of the outer packaging bags.

Moisture Protection for Injection Moulded Parts

Injection moulded plastic elements are very sensitive to moisture. If these parts attract moisture, they change their shape. Particularly in the automotive industry, tolerances regarding the accuracy of fit of individual components are very small. The addition of suitable desiccants, e.g. Desi Dry silica gel packets into the PE or aluminium composite bag in which the articles are packed, during shipping and storage reduces the risk of customer complaints.

Injection moulded parts are sensitive to moisture and should be protected by desiccants during shipping and storage.

Moisture Protection for 3D Printing Filaments

Plastic is the most common print material in 3D printers. For a printer using fused deposition modeling technology the plastic is placed in the printer in the form of a so-called filament reel. When these filaments absorb moisture the 3D printer can no longer optimally process them. Therefore we advise you to use a suitable desiccant when you ship or store these materials. Our Desi Dry silica gel packets are available in various pouch sizes and materials.

Desiccants ensure consistently good quality during storage and transport of 3D filaments.

Glass Corrosion on Optical Lenses

One of our customers specialises in precision optics; the products are used worldwide in measuring, laser and aerospace technology, among others. The person responsible for the process approached us with the problem that glass corrosion occurred on optical lenses manufactured in a clean room during intermediate storage. This was caused by excessive humidity in the storage containers.

He conducted tests on the release of particles between 0.3 µm and 5 µm with Desi Dry silica gel packets, both with low-dust and dust-proof pouch material. Both types of bags were first moved in the hand at a distance of 5 cm from a measuring head and then shaken vigorously. As a result, the Desi Dry silica gel packets with a dust-proof pouch showed an average particle emission up to 28 times lower than the version with a low-dust pouch - the right desiccant for our customer's sensitive products.

Optical lenses should be protected against glass corrosion caused by excessive humidity.

Liquid protection for undertakers

One of ThoMar's customers uses the Liquids absorber LiquiDry for the preservation of deceased persons.

The specific purpose of LiquiDry is to act as a kind of barrier in the body, helping to prevent fluids from escaping from orifices such as the throat. Thanks to its gel formation, liquids are securely bound, while the compact bag dimensions and high absorption capacity enable simple and flexible placement. LiquiDry's fast reaction time is particularly appreciated: as soon as the absorber comes into contact with liquid, the granules it contains immediately turn into a solid gel. This prevents liquids from escaping and creates a hygienic environment.

Liquid absorbers are e.g. used to preserve the deceased.