What is alu-alu base foil?
Alu-Alu Base Foil, also known as cold-formed blister foil, is a specialized packaging material primarily used in the pharmaceutical industry. It serves as the base layer in blister packaging and is especially suitable for drugs that are highly sensitive to environmental factors such as humidity, oxygen, and light. This foil is essential for protecting solid dosage forms such as tablets, capsules, and injectables, ensuring their stability and effectiveness.
Composition and Structure of Alu-Alu Base Foil
Alu-Alu Base Foil is typically composed of multi-layer laminated materials:
- Polyamide (OPA) film: Approximately 25 microns thick, providing flexibility and strength.
- Adhesive layer: Promotes adhesion between the OPA film and aluminum foil.
- Aluminum foil: Thickness ranges from 45 to 60 microns, offering a robust barrier against environmental elements.
- Second adhesive layer: Ensures adhesion between the aluminum foil and PVC film.
- Polyvinyl chloride (PVC) film: Approximately 60 microns thick, serving as the heat-seal surface in blister packaging.
This structure utilizes a dry lamination process to ensure strong and durable composite material.
Specifications of Alu-Alu Base Foil
Common specifications of Alu-Alu Base Foil include:
- Thickness: Typically ranges from 140 to 160 microns.
- Width: Less than 700 millimeters.
- Roll diameter: Between 240 millimeters and 280 millimeters.
- Core diameter: 76 millimeters, tolerance ±0.5 millimeters.
Features of Alu-Alu Base Foil
| Feature | Description |
| Excellent Barrier Properties | Alu-Alu Base Foil provides outstanding barrier properties, effectively blocking moisture, oxygen, and light. This characteristic is vital for pharmaceutical packaging, especially for drugs that need to be stored under specific environmental conditions, such as those sensitive to oxidation or moisture. With this barrier protection, the stability and efficacy of the drug are preserved, preventing adverse effects caused by external environmental factors. |
| Cold Formability | Alu-Alu Base Foil possesses excellent cold formability, enabling the formation of deep and complex blister cavities without the need for heating. This cold-forming property is ideal for packaging potent or moisture-sensitive drugs, as it allows the desired packaging structure to be formed without altering the properties or efficacy of the medication. This feature makes Alu-Alu Base Foil an ideal packaging material in the pharmaceutical industry, especially suitable for complex blister packaging. |
| Chemical Stability | The materials used in Alu-Alu Base Foil exhibit high chemical stability, ensuring that they do not react with the drug during use. This chemical inertness makes Alu-Alu Base Foil very suitable for pharmaceutical packaging, particularly for drugs highly sensitive to external environmental changes. The chemical stability of the material effectively avoids adverse interactions between the drug and the packaging material, thereby guaranteeing the purity and safety of the medication. |
| Tamper Evident | The packaging design of Alu-Alu Base Foil features tamper-evident characteristics that clearly indicate any tampering. This design provides an extra layer of security for pharmaceuticals, helping to prevent unauthorized tampering or misuse. During the sale and transportation of drugs, consumers and regulatory authorities can easily identify whether the packaging has been opened or damaged, thus enhancing the safety and compliance of the medication. |
| Customization | The aluminum foil of Alu-Alu Base Foil can be customized according to customer requirements, including brand logo printing, regulatory information, and packaging structure adjustments. This flexible customization capability allows Alu-Alu Base Foil to meet functional needs of pharmaceutical packaging while also providing space for brand promotion and information delivery. Whether it’s the appearance design or specific packaging requirements, Alu-Alu Base Foil offers a high level of personalization to meet market and consumer demands. |
Applications of Alu-Alu Base Foil
Alu-Alu Base Foil is mainly used for:
- Packaging of sensitive drugs: Suitable for drugs that degrade due to environmental factors.
- Packaging of high-value medications: Provides enhanced protection for expensive or low-dosage drugs.
- Packaging of nutritional supplements: Ensures stability of vitamins and other supplements.
- Cosmetic packaging: Used for packaging light-sensitive and moisture-sensitive skincare products.
Advantages of Alu-Alu Base Foil over Traditional PVC Blister
Compared to traditional PVC blister packaging, Alu-Alu Base Foil offers the following advantages:
| Advantage | Description |
| Enhanced Protection | Alu-Alu Base Foil provides higher barrier performance than traditional PVC blister packaging. It effectively resists the influence of environmental elements such as moisture, oxygen, and light. This ensures better protection for drugs, particularly those highly sensitive to environmental conditions. The barrier capability of Alu-Alu Base Foil significantly reduces the risk of drug degradation, ensuring the quality and efficacy of the medicine throughout storage and transportation. |
| Extended Shelf Life | Due to the excellent barrier properties of Alu-Alu Base Foil, it helps maintain the efficacy of medications for a longer period. Compared to traditional PVC blister packaging, Alu-Alu Base Foil better prevents contact of drugs with air, moisture, and light, thereby delaying the decomposition and failure of drug components. For medications requiring long-term storage, especially those susceptible to external environmental influences, Alu-Alu Base Foil effectively extends shelf life and preserves drug potency. |
| Improved Safety | Alu-Alu Base Foil features tamper-evident capabilities that clearly indicate any unauthorized opening or tampering. This significantly enhances the safety of pharmaceutical packaging and helps prevent the circulation of counterfeit products. Compared to traditional PVC blister, Alu-Alu Base Foil provides more reliable anti-counterfeiting protection, enabling consumers and regulatory bodies to easily detect any tampering, ensuring the safety and compliance of the medicine. |
Alu-Alu Base Foil is a critical component in pharmaceutical packaging, requiring strict protection from environmental influences. Its excellent barrier properties and adaptability make it an essential choice for ensuring the safety and efficacy of sensitive medications.
