At Protective Packaging Ltd., we specialise in designing and manufacturing custom aluminium foil bags and liners that safeguard atmospherically sensitive materials across a range of industries. A key area where our expertise makes a critical difference is in the protection of hygroscopic polymers and resins. To meet these specific needs, we offer tailored resin and polymer protective packaging solutions that minimise the risk of moisture and oxygen ingress during storage and transport.
Understanding Hygroscopic vs. Non-Hygroscopic Materials
Hygroscopic polymers—such as Nylon-6, Polyamides, Polycarbonate, PBT, PET, ABS, acrylics, and urethanes—have a natural tendency to attract and absorb moisture from the air. This moisture is adsorbed directly onto the molecular structure of the material. In contrast, non-hygroscopic polymers do not attract moisture in this way; any surface moisture collected is not absorbed into the material.
For hygroscopic materials, even brief exposure to ambient air can lead to moisture uptake, which in turn requires a drying process before further manufacturing or processing can occur. This step is both costly and time-consuming—making prevention through proper packaging essential.
The Role of Aluminium Barrier Foil Laminates
Our aluminium barrier foil laminates provide outstanding protection against moisture and oxygen ingress. These materials incorporate a metallic aluminium layer that delivers the lowest water vapour transmission rate (WVTR) of any flexible packaging substrate. This makes them an ideal solution for maintaining the integrity and quality of hygroscopic polymers and resins, particularly during long-term storage, export, or global transit.
Our laminates also offer excellent protection against odours, UV light, and atmospheric contamination, providing a total climatic barrier that preserves your product in its original state.
Packaging Solutions Tailored to Polymers and Resins
For customers dealing with bulk polymers and resins, we commonly recommend the following barrier foil liner formats:
- Box Liners
- Octabin Liners
- Round Bottom Drum Liners
These formats are popular due to their efficiency in storage and shipping, as well as their compatibility with standard industrial containers. Each liner is manufactured to meet the exact internal dimensions of your container, ensuring a secure, airtight fit.
Custom features such as open tops, filling spouts, or heat-sealable designs can be added to accommodate closed-system filling, reduce sealing time, and improve overall handling efficiency.
Our Round Bottom Drum Liners come in a variety of standard sizes and include a flared edge for easier cuffing and application—ideal for streamlining packing operations.
Why Choose Protective Packaging Ltd?
When protecting hygroscopic materials, we deliver packaging solutions that maintain your product’s original properties—ensuring performance within tolerance and preventing expensive post-processing.
Key Benefits Include:
- Preservation of original product characteristics
- No minimum order quantity—ideal for small-scale and large-volume requirements
- Laminates with zero moisture and oxygen transmission rates
- Anti-static laminate options for ESD-sensitive environments
- ISO 9001:2015 accredited manufacturing standards for consistent quality assurance
Do you have a need you would like to discuss?
Talk to our team of experts who will be happy to work with you to develop a solution.