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Blister Packaging in the Supplements Industry:

Key Benefits and Applications

Blister packaging has become a staple in the dietary supplement industry, offering a reliable and convenient method to package vitamins and other supplements. As consumers, we often overlook the packaging that protects our daily vitamins, but its significance is crucial. This article will delve into the essentials of blister packaging, explaining its role in the supplements industry, and why it's a preferred choice. By the end, you'll have a clear understanding of how blister packaging enhances the safety, shelf-life, and consumer experience of dietary supplements.

Blister: What Is It?
A blister pack is a type of pre-formed plastic packaging that securely encases products, usually sealed with a layer of paperboard or aluminum foil.
The main characteristic of blister packaging is its transparent, thermoformed plastic cavity designed to hold individual items, such as tablets or capsules, in place. This packaging not only keeps the product safe from external factors like moisture and contamination but also ensures that each dose is individually protected until use.
Blister with beige capsules

What Kind of Plastic Is Used for the Blister?

The most commonly used plastics in blister packaging are Polyvinyl Chloride (PVC), Polyethylene Terephthalate (PET), and Polypropylene (PP).

  • PVC

    PVC is the most popular choice due to its excellent formability, clarity, and barrier properties.

  • PET

    PET, known for its high transparency and strength, is also used, especially when recyclability is a priority.

  • PP

    PP, while less common, offers superior resistance to chemical interaction and is often chosen for specific formulations that require such protection.

Advantages of Blister Packaging

Blister packaging offers numerous advantages, particularly in the dietary supplement industry. It provides excellent protection against environmental factors like moisture, oxygen, and light, which can degrade the potency of vitamins and other supplements.
The individual compartments in blister packs also help in maintaining dosage accuracy, preventing accidental overdosing. Moreover, the transparent nature of the plastic allows consumers to easily see the product, ensuring quality and trust.
Additionally, blister packs are tamper-evident, providing an extra layer of security for consumers.
Blister Manufacturing Technology
The production of blister packaging involves several key steps.
Heating and forming
It starts with the heating and forming of plastic sheets into the desired cavity shape using a process called thermoforming.
Filling
Once formed, the cavities are filled with the product, typically through automated machinery.
Sealing
After filling, the cavities are sealed with a backing material, which could be paperboard, aluminum foil, or another type of film.
Cutting
The final step involves cutting the sheets into individual blister packs, ready for distribution.

Blister of Tablets

When it comes to tablets, blister packaging is specifically designed to accommodate their shape and size. Each tablet is placed into its own cavity, which is then sealed to ensure the tablet remains protected from moisture, air, and other contaminants.
This type of packaging is especially beneficial for tablets that are sensitive to environmental factors, as it prolongs their shelf life and maintains their efficacy.

Types of Blister Packs

There are several types of blister packs, each catering to different product requirements.
The most common type is the face-seal blister, where the plastic is sealed to a backing card. Full-face blisters cover the entire surface of the card, while clamshell blisters offer a more rigid and reusable option. There are also trapped blisters, where the product is encased between two cards, and child-resistant blisters, designed with additional safety features to prevent accidental ingestion by children.
blisters of different shapes with multi-colored tablets and capsules

For What Products Is It Suitable?

Blister packaging is particularly suitable for products that require precise dosing and protection, making it an ideal choice for dietary supplements like vitamins, minerals, and herbal tablets.
It is also commonly used for pharmaceuticals, medical devices, and small consumer goods such as batteries and electronic components.
The ability to customize the cavity size and shape makes blister packaging versatile enough to accommodate a wide range of products.
Conclusion

Blister packaging plays an indispensable role in the dietary supplement industry by ensuring that products remain safe, effective, and easy to use. From protecting the potency of vitamins to offering tamper-evident security, blister packs provide numerous benefits that make them a preferred choice for manufacturers and consumers alike.


As we continue to see advancements in packaging technology, blister packs will likely remain a cornerstone in the packaging of supplements and other sensitive products.

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