Cold-Formed Blister Packaging: The Premium Choice for High-End Pharmaceutical Solutions

Cold-formed blister packaging delivers exceptional barrier properties, reliable sealing, and operational efficiency, making it the preferred solution for premium pharmaceutical packaging. The cold-stamped rigid film typically comprises three functional layers:

Surface strength support layer

Middle aluminum foil barrier layer

Inner heat-seal layer

8021 aluminum foil

Among these, 8021 aluminum foil is widely adopted in pharmaceutical applications for its high tensile strength, excellent elongation, and superior barrier performance.

Role & Advantages of 8021 Foil in Cold-Stamped Blister Packaging

Unlike conventional flexible packaging, the aluminum foil barrier layer in cold-stamped blisters must provide:

✅ Triple-function performance: Barrier protection + structural support + stamping resistance

✅ Optimized mechanical properties:

High strength withstands pressure/impact to protect products

Exceptional elongation (≥3%) prevents cracking/deformation during stamping

Ensures blister cavity precision and dimensional stability

✅ Unmatched barrier protection:

Blocks >99.9% oxygen, moisture, and UV penetration

Extends shelf life of sensitive pharmaceuticals and nutraceuticals

✅ Enhanced processability:

Superior printability for brand customization

Excellent heat-sealing performance (seal strength ≥3.5N/15mm)