Moisture is one of the most critical factors affecting the quality, stability, and performance of oral dissolving films (ODF). At RSBM, we integrate advanced moisture-control components across formulation, casting, drying, and packaging to guarantee that each film maintains optimal texture, flexibility, dissolution speed, and shelf-life—even under challenging storage conditions.
1. Moisture-Regulating Polymers
We use carefully selected film-forming materials—such as HPMC, pullulan, PVA, and moisture-stable hybrid polymers—to ensure controlled water activity within the film matrix. These polymers provide stable mechanical strength without becoming brittle or overly soft during seasonal humidity changes.
2. Hygroscopic & Anti-Hygroscopic Additives
Depending on the formulation goals, we incorporate moisture-balancing excipients such as:
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Glycerin / sorbitol for flexibility and water retention
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Moisture-scavenging agents to prevent film swelling
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Controlled-release binders to stabilize sensitive actives
These components allow your ODF to maintain consistent dissolution performance over time.
3. Precision Drying for Moisture Uniformity
RSBM’s drying systems use multi-zone temperature and airflow control to ensure that every micron of film dries evenly. This prevents:
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Edge or center brittleness
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Over-drying (leading to cracking)
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Residual moisture pockets (leading to microbial risk)
The result is a film with uniform water activity from batch to batch.
4. Moisture-Barrier Packaging Integration
We validate each ODF film with appropriate packaging solutions, including:
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High-barrier pouches (PET/AL/PE, foil laminates)
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Moisture-proof sachets for powder-sensitive actives
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Air pouch systems for nicotine/caffeine films
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Desiccant-supported packaging options
By combining barrier packaging with RSBM’s film-grade moisture control, your product achieves long-term stability across global shipping climates.
5. Full-Chain Moisture Control from R&D to Mass Production
Because RSBM designs both equipment and formulations, we control moisture at every step:
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Formulation → Casting → Drying → Slitting → Packaging
This integrated approach ensures your film reaches the ideal balance between flexibility, mouthfeel, and stability—even for sensitive active compounds such as enzymes, probiotics, plant extracts, NAD+, melatonin, and nicotine.
