Ask ten packaging suppliers which sheet they use for clamshells and you will get ten answers u2014 not because anyone is hiding anything, but because the right material depends on your product, your market and your story. Here is the honest rundown.

PET: The Default Choice

PET delivers the clearest optics, good rigidity and full recyclability. Most of our clamshell blister packs run on food-grade PET, especially for anything touching food or cosmetics.

RPET: Recycled Content

RPET is PET made from post-consumer recycled bottles. Same clarity, slightly higher cost, far better sustainability story. European retailers increasingly ask for it, and we supply RPET clamshells on request.

PVC: The Budget Workhorse

PVC is cheaper and easy to thermoform, which is why it remains popular for hardware and toys. The catch is disposal u2014 some EU markets restrict it. If price drives your decision and your market allows PVC, it is a legitimate option.

PP: Tough and Flexible

Polypropylene resists cracking and returns to shape after bending u2014 ideal for reusable clamshells and products that get opened repeatedly, like our fold-over blisters.

Matching Material to Application

Electronics want anti-static options; food wants food-grade; medical wants certified materials with full traceability u2014 like our diagnostic kit trays. Tell us your market and we will specify the sheet u2014 free samples before you commit.

Selecting Clamshell Blister Pack Materials

The right clamshell blister pack materials balance clarity, rigidity and cost. Request material certificates with your quote so your market compliance is never in question.

Related reading: thermoforming overview.