What is Clamshell Packaging?

June 25, 2025

What is Clamshell Packaging?

What is Clamshell Packaging?

Clamshell packaging is a type of rigid, hinged plastic container that opens and closes like a clam shell, securely encasing a product inside. It is commonly made from PET (Polyethylene Terephthalate), PVC (Polyvinyl Chloride), or RPET (Recycled PET) and is widely used in retail for its durability, visibility, and tamper resistance.


Key Features of Clamshell Packaging:

  1. Material Options:

    • PET (clear, strong, recyclable)

    • PVC (cheaper but less eco-friendly)

    • RPET (recycled, more sustainable)

    • Biodegradable PLA (eco-friendly alternative)

  2. Design Types:

    • Standard Clamshell – Two hinged halves that snap shut.

    • Blister Clamshell – Plastic blister sealed to a cardboard back.

    • Locking Clamshell – Includes security features like zip ties or anti-theft tags.

  3. Common Uses:

    • Electronics (headphones, USB drives, batteries)

    • Toys & Games (action figures, trading cards)

    • Cosmetics (makeup palettes, skincare sets)

    • Food Packaging (berries, salads, bakery items)

    • Pharmaceuticals & Medical Devices


Advantages of Clamshell Packaging:

Product Visibility – Clear plastic showcases the product.
Tamper-Resistant – Hard to open without damage, reducing theft.
Durability – Protects fragile items during shipping.
Customizable – Can be molded into unique shapes with branding.
Lightweight – Reduces shipping costs compared to glass or metal.


Disadvantages:

Difficult to Open – Often requires scissors, causing frustration ("wrap rage").
Environmental Concerns – Non-recyclable plastics (like PVC) contribute to waste.
Higher Production Costs – Custom molds can be expensive for small batches.


Eco-Friendly Alternatives:

  • Recycled PET (RPET) Clamshells – More sustainable than virgin plastic.

  • Cardboard-Based Clamshells – With minimal plastic windows.

  • Compostable PLA Clamshells – Breaks down in industrial composting.


Clamshell vs. Blister Packaging:

Feature Clamshell Packaging Blister Packaging
Structure Hinged plastic shell Plastic cavity + cardboard/foil backing
Security More tamper-resistant Easier to open (some types)
Cost Higher (due to more plastic) Lower (less material)
Eco-Friendliness Depends on plastic type PET/RPET is more recyclable

Conclusion:

Clamshell packaging is ideal for high-security, high-visibility retail products, but brands are shifting toward recyclable PET or biodegradable options to reduce environmental impact.