Aluminum Blister Foil

Aluminum blister foil Introduction

High-quality pharmaceutical products require blister packaging to protect them from environmental influences, oxygen and moisture. Only in this way can pharmaceutical ingredients maintain their efficacy after taking them.

Aluminum blister foil is an important component of blister packaging and comes in three types: bare, coated or printed. Blister packaging coatings available include polyurethane and epoxy resin-based adhesion promoters, heat seal and release coatings.

Aluminum blister foil is typically 25-30 microns thick. The glossy side is coated with a heat seal coating and the matte side is coated with a printed treatment coating.

What is blister packaging?

Blister packaging is commonly used for pharmaceutical products in the pharmaceutical industry. Generally consists of two parts, including a so-called push-in blister (or simply "blister", a molded plastic with a cavity for holding individual tablets), and a push-in closure made of aluminum foil ( called blister film or aluminum blister foil). Plastic press-fit blisters must be sealed with an aluminum lidding film to ensure effective protection of the tablets. For this purpose, the aluminum foil is coated with a suitable sealant, usually a heat sealing paint, which is used to seal the blister to the blister film. Therefore, capsules and tablets are hygienically clean and protected.

Finished aluminum blister foil, on the other hand, is usually coated with a primer and often printed with the manufacturer's logo or other markings so that consumers can safely identify the medicine. huawei aluminum provides customized logo printing services

Specifications of aluminum blister foil from huawei aluminum

Aluminum blister foil is widely used in the pharmaceutical industry for packaging tablets, capsules, and other solid dosage forms. Here are some common specifications for aluminum blister foil from huawei aluminum:

1. Material Composition

• Alloy: Usually 8011, 8021, or 8079
• Temper: Generally H18, H19, or O

2. Dimensions

• Thickness: Commonly ranges from 20 microns (µm) to 30 microns (µm). Typical thicknesses include:
• 20 µm
• 25 µm
• 30 µm
• Width: Ranges from 60 mm to 800 mm, depending on the specific packaging requirements and machinery used.
• Length: Usually provided in rolls with lengths varying according to customer needs.

3. Coating and Lamination

• Primer Coating: Applied on the aluminum surface to ensure adhesion of printing inks.
• Heat Seal Lacquer: Typically applied on the inner side to enable sealing with PVC, PVDC-coated PVC, or other polymer films.
• Adhesive Layer: Used for lamination with other materials if needed.
• Printing Ink: Can be applied as per customer requirements for branding and product information.

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4. Mechanical Properties

• Tensile Strength: High tensile strength to withstand the packaging process.
• Elongation: Adequate elongation properties to ensure flexibility without tearing.

5. Barrier Properties

• Moisture Barrier: Excellent moisture barrier to protect the contents from humidity.
• Oxygen Barrier: Effective oxygen barrier to prevent oxidation of the pharmaceutical products.
• Light Barrier: Provides protection from light, which can degrade sensitive drugs.

6. Surface Finish

• Surface Treatment: Can be plain, printed, or lacquered.
• Appearance: Often bright, matte, or embossed, depending on the specific requirement.

7. Regulatory Compliance

• FDA and EU Regulations: Compliant with relevant pharmaceutical packaging standards.
• Non-toxic and Odorless: Safe for pharmaceutical use.

8. Printing

• Gravure Printing: Common method used for printing on aluminum foil.
• Colors: Up to six colors, depending on the branding and product information requirements.

9. Sealing Properties

• Sealing Strength: High sealing strength to ensure integrity and tamper-evidence.
• Sealability: Capable of forming strong seals with various lidding films like PVC, PVDC-coated PVC, PET, and others.

Typical Applications

• Blister Packs: For tablets, capsules, and other solid dosage forms.
• Strip Packs: For unit dose packaging of pharmaceutical products.

These specifications ensure that aluminum blister foil provides excellent protection for pharmaceutical products, maintaining their efficacy, safety, and shelf life.