
How to Store Capsules Properly – Are You Doing It Right?
Capsules are one of the most common dosage forms in pharmaceuticals, dietary supplements, and traditional medicine. They are widely used thanks to their convenience and ease of consumption. In addition, capsules help protect active ingredients more effectively than many other dosage forms.
However, capsules are highly sensitive to environmental factors. Moisture, air, and bacteria can all affect product quality. If capsules are not stored properly, they may become soft, deformed, or less effective. In some cases, they may even lose their original function.
That is why, besides outer packaging, proper bottle sealing plays a critical role. A good sealing solution helps protect capsules from environmental exposure and extends shelf life. Among current options, self-adhesive sealing liners for capsule bottles are increasingly preferred. This solution is effective, easy to use, and cost-efficient.
What Is a Self-Adhesive Seal Liner for Capsule Bottles?
A self-adhesive seal liner is a sealing film placed directly on the bottle mouth. It adheres firmly without the need for heat sealing machines. Once applied and capped, the liner forms a tight protective barrier.
This barrier helps block air, moisture, and external contaminants. As a result, capsules remain stable and well-protected during storage and transportation.
Self-adhesive seal liners are especially suitable for small and medium-sized businesses. They are also ideal for pharmaceutical and dietary supplement manufacturers. This solution allows companies to reduce equipment costs while still meeting packaging standards.
How Does a Self-Adhesive Seal Liner Work?
Safe, Medical-Grade Materials
Self-adhesive seal liners are made from safe, health-friendly materials. They meet the requirements of the pharmaceutical and dietary supplement industries. The material does not react with capsules and does not affect odor, taste, or product quality.
Moisture Protection and Bacterial Prevention
Moisture is one of the main causes of capsule deterioration. Airborne bacteria can also compromise product safety. A self-adhesive seal liner creates a tight seal. This helps minimize moisture penetration and bacterial contamination.
Easy to Use, No Equipment Required
Unlike aluminum induction seals, self-adhesive liners do not require heat sealing machines. They can be applied manually. Simply place the liner correctly and press gently. This saves time, labor, and operating costs.
Tamper Evidence and Product Integrity
When the bottle is opened, the seal liner is torn. This allows consumers to easily identify whether the product has been opened before. Tamper-evident sealing helps prevent counterfeiting and builds trust in the brand.
Compatible with Various Bottle Types
Self-adhesive seal liners are compatible with many packaging materials. They can be used with PET, HDPE, PP plastic bottles, as well as glass bottles. This flexibility meets diverse packaging needs across the market.

How to Use a Self-Adhesive Seal Liner for Capsule Bottles
To achieve optimal sealing performance, follow these simple steps:
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Clean the bottle mouth to ensure it is dry and free from dust or oil
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Place the self-adhesive seal liner on the bottle opening
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Press gently to allow the adhesive layer to bond firmly
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Close the cap to secure the liner and enhance protection
With just a few simple steps, your capsules are safely sealed and well-protected.
Conclusion
Today’s consumers are increasingly concerned about the safety and quality of pharmaceutical products. As a result, proper sealing solutions have become more important than ever. Self-adhesive seal liners for capsule bottles not only improve product protection but also enhance brand credibility.
With moisture resistance, tamper evidence, ease of use, and cost efficiency, this solution is ideal for many businesses. It allows manufacturers to optimize packaging costs while maintaining high quality standards.
Sam Lan proudly provides high-quality self-adhesive seal liners that are flexible and reliable.
Contact Sam Lan today to receive expert consultation and choose the most suitable sealing solution for your products.