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Have you ever popped a pill out of a plastic bubble or sliced through a plastic shell to get to your new headphones? That’s blister packaging. Businesses across industries have been considering it as one of the most flexible and effective ways to protect, display, and sell products today.
What actually is blister packaging? How is it made, and what are the benefits of using it? Let’s reveal all the essential details.
What is Blister Packaging?
In addition to various box types, blister packaging has emerged as a trending innovation across industries.
At its core, blister packaging is a pre-formed plastic cavity (the “blister”). It is the ideal option for small consumer goods, pharmaceuticals, and food items.
This packaging usually consists of two main parts:
- A cavity made from a formable plastic or aluminum.
- A lidding or “backing” (cardboard, foil, or plastic) that seals the product inside.
It is exclusively designed to keep products safe from moisture, contamination, and light. And just like other custom packaging boxes, blister packaging enhances product visibility on store shelves.
How is Blister Packaging Made?
The manufacturing process of blister packaging is not really complicated. It involves either thermoforming or cold forming.
In thermoforming, a plastic sheet is heated until soft, then draped over a mold.
On the other hand, in cold forming, an aluminum-based film is simply pressed into a shape using a stamp.
Here’s the entire process.
- Forming: A plastic film is heated, shaped into cavities, and cooled into shape.
- Feeding/Filling: The product is placed into the formed blisters.
- Sealing: A backing material (aluminum foil or cardboard) is applied to the plastic using a heating plate to activate a heat-seal coating.
- Die-Cutting/Finishing: The sealed sheets are cut and trimmed into individual or multi-unit blister packs.
Materials Used in Blister Packaging
Not all blister packs are created equal. Depending on the level of protection your product requires, there are several material options.
Let’s break it down.
- PVC (Polyvinyl Chloride)
PVC is the most common plastic used for producing blister packaging. It is low-cost and easy to thermoform. Plus, it offers great clarity, so customers can see exactly what they are buying.
- PET (Polyethylene Terephthalate)
PET is an eco-friendly alternative to PVC. It is durable while being recyclable. And another quality to mention is that it provides an excellent barrier against gas and moisture.
- Cardboard
Cardboard is the “backbone” of the package. It is usually coated with a heat-seal adhesive, keeping the plastic blister in place. The cardboard also serves as a canvas for product details, branding, and barcodes.
- Aluminum Foil
Aluminum foil is mainly used in the pharmaceutical world. It provides a 100% barrier against light, oxygen, and moisture. In simple words, it is the “push-through” part of the cold medicine pack you have seen everywhere.
The Components of Blister Packaging
Despite being lightweight, a blister pack is actually a carefully engineered piece of technology.
Let’s have a look at its essential components.
- Forming Film: The plastic or foil sheet that forms the actual cavity or “pocket.”
- Lidding Material: The material that seals the product. Lids can be peelable, push-through, or permanent.
- Product Chamber: The space specifically tailored to the product’s shape.
- Seal Area: The margin area where the plastic meets the backing, creating an airtight bond.
- Perforation Lines: Handy dotted lines that let customers tear off one product at a time.
- Printing: Instructions, your business logo, and expiration dates.
- Child-Resistant Features: Specialized lidding that requires a “peel and push” action to keep children’s hands out.
Types of Blister Packaging
Every product has its own characteristics, and blister packaging comes in various types to meet each product’s needs.
Here are some common variations you can choose from.
- Face Seal Blister
In this type, the plastic bubble is sealed directly to the front of the cardboard.
- Full Card Blister
A full-card blister is when the plastic wraps around the edges of the card. The result? Extra product protection and a more premium look.
- Trapped Blister
“Trapped” means the plastic bubble is “sandwiched” between two pieces of cardboard. This type is more eco-friendly as it uses less plastic in production.
- Cold Seal Blister Packaging
Cold-seal blister uses pressure-sensitive adhesives rather than heat. It is a perfect option for heat-sensitive products.
- Clamshell Blister Packaging
Clamshell blister packaging features two plastic halves joined by a hinge. It is mostly used for electronic products.
| Type | Description | Key Advantage | Ideal Products |
| Face Seal | Blister flange sealed to the face of a card | Low cost, high visibility | Lightweight retail items, batteries, small tools |
| Full Card | Blister covers entire front of the card | High durability, stronger hang tab | Larger, heavier retail products |
| Trapped | Blister trapped between two cards | Secure, high-end look, double-sided print | High-value consumer goods, electronics, cosmetics |
| Cold Seal | Aluminum-to-aluminum cold-formed seal | Max environmental protection (no heat) | Pharmaceuticals, tablets, sensitive electronics |
| Clamshell | Hinged 2-part plastic container | Tamper resistance, high security | Electronics, toys, medical devices, hardware |
Benefits of Blister Packaging
Why do brands prefer blister packaging? Definitely because it offers tremendous benefits.
Here are some compelling benefits your business can get from using this packaging.
Better Product Protection
Blister packaging acts as a protective barrier for your products to fight against moisture and physical damage.
Improved Shelf Life
High-barrier materials used in cold-form blisters prevent moisture/oxygen ingress. As a result, it can extend the product’s shelf life.
Security Features
It is naturally tamper-evident. If the seal is broken, you know someone has tried to open the packs. And don’t forget the child-resistant locks that keep your products out of children’s reach.
Clear and Attractive Displays
Its clear plastic display allows customers to see the exact look and quality of your products without touching them.
Portion Control
Blister packaging provides easy portion control. This is essential in medicine, as it ensures that customers take exactly one dose.
Customizable with Excellent Finishes
Blister packaging is printable and customizable on both the backing card and the blister cavity. You can apply excellent finishes like:
- Gloss or matte lamination
- Spot UV coating for highlighting
- Embossing/debossing for texture
- Metallic foil stamping for a luxurious look
Cost-Effective Production
High-speed machinery makes this packaging the cheapest way to pack high-volume products.
Blister Packaging Applications
Considering its features and benefits, you will find this packaging in almost every aisle of the store.
Here’s where blister packaging performs.
- Pharmaceuticals
It is one of the gold standards in custom medicine boxes for protecting and displaying unit-dose packs of tablets and capsules.
- Electronics
Blister packs are the ones that keep USB drives, batteries, and cables organized and visible.
- Consumer Goods
This packaging is a one-for-all option for presenting consumer goods. You can attractively display everything from toothbrushes to screwdrivers and pens.
- Food Items
Yes, it is also included in customized food packaging. For example, think of gum packs or those little cups of jelly.
- Cosmetics and Personal Care Items
Blister packaging can be used as a cosmetic box for small beauty items. If you have ever seen lip balms, medicines, and sample-sized creams displayed transparently, you have seen how blister packaging works.
Blister Packaging vs Other Packaging Options
Blister packs are more flexible and offer superior product visibility compared to other packaging options like bottles, sachets, or strip packaging.
What makes this packaging different?
Have a look at the comparison table below.
| Factor | Blister Packaging | Strip Packaging | Bottles/Vials | Sachets |
| Best Use | Pharma, Consumer goods | High-barrier Pharma (tablets/capsules) | Liquids | Powders, Liquids, Gels |
| Product Visibility | High (clear plastic) | Low (opaque materials) | Low (usually opaque) | Low |
| Durability | High (tamper-evident, child-resistant) | High (Hermetic seal) | Moderate (requires extra sealing) | Moderate |
| Storage | Compact, space-efficient | Slim. compact | Bulky | Thin, space-saving |
| Customization | Excellent for specific shapes | Limited to flat shapes | Limited to bottle shape | Medium |
Challenges and Limitations of Blister Packaging
There are always two sides to a coin. Alongside its compelling benefits, blister packaging also presents some challenges and limitations.
Environmental Concerns
The manufacturing process for blister packs often uses multilayer, non-biodegradable plastics bonded to aluminum. Thus, making them nearly impossible to recycle and dispose of.
Technical Hurdles
When it comes to producing blister packaging, high-quality, specialized machinery is required.
Product Limitations
Not all products are “blisterable.” Some large or irregularly shaped products are not suitable for this packaging.
Limited Customization
Modifying blister packaging for different sizes can be time-consuming.
Matching the Blister Design with Your Product
Obviously, you cannot just place any product into a blister pack. Instead, you must consider some factors as well.
Note the points below when matching the blister design with your product characteristics.
- Size and Shape: Ensure the cavity will be a snug fit to prevent product rattling and damage.
- Product Sensitivity: Consider your product’s sensitivity. Does it need a UV filter or an oxygen barrier?
- Handling Needs: Figure out whether you need a “hang hole” to display your products in retail settings.
- Marketing Requirements: Make sure there’s ample space for your branding and marketing messages.
- Target Audience: Think of your target audience. Should the blister pack be easy for seniors to open? Or does it have to be child-proof?
- Compliance: Focus on the FDA or industry safety standards when designing your blister packaging.
The Takeaway
No doubt, blister packaging is considered one of the most flexible and effective ways to protect, display, and sell products today. With all the qualities and benefits it offers, this packaging has emerged as a trending innovation across industries.
So, are you thinking of using blister packaging?
FAQs
What is blister packaging?
Blister packaging is a pre-formed plastic cavity (the “blister”) used for small consumer goods, pharmaceuticals, and food items.
How is blister packaging made?
The manufacturing process for blister packaging involves forming, feeding/filling, sealing, and die-cutting/finishing.
What products are suitable for blister packaging?
Blister packaging is an ideal option for pharmaceuticals, electronics, consumer goods, food items, and cosmetics & personal care items.
What are the benefits of blister packaging?
The benefits of blister packaging include better product protection, security features, clear & attractive displays, portion control, and cost-effective production.
