1. Giriş

8079 PVDC coated aluminum foil is a key high-barrier material in pharmaceutical blister packaging. It is extensively used for packaging tablets, kapsul, health supplements, Tibbi cihazlar, and high-end food products.

With rising global demands for drug stability, shelf life, və təhlükəsizlik, conventional PVC blister materials often fall short for highly sensitive drugs. This includes hygroscopic, oxidation-prone, and light-sensitive drugs, as well as formulations containing high-activity APIs or designed for sustained release.

Packaging for such products must offer superior barrier properties, extremely low moisture and oxygen transmission rates, reliable heat seal performance, and stable mechanical strength.

It is against this market backdrop that 8079 PVDC coated aluminum foil has become a mainstream, high-end pharmaceutical packaging material. Its core advantages stem from two key components:

8079 Aluminum Alloy Substrate

8079 Alüminium ərintilərinin 8xxx seriyasına aiddir, known for:

• Extremely low pinhole count
• Əla islahatçılıq
• Superior deep-drawing performance
• More stable capability for ultra-thin rollingEven at thicknesses as low as 20μm, it retains good mechanical strength and barrier properties.

PVDC High-Barrier Coating

Pvdc (Poliviniliden xlorid) is a high-performance barrier polymer, nümayiş etdirir:

• Ultra-low moisture vapor transmission
• Ultra-low oxygen transmission
• Good chemical corrosion resistance
• Stable heat seal performanceThe PVDC coating can further seal micro-pores in the aluminum foil, significantly enhancing the overall barrier performance of the packaging.

Buna görə də, 8079 PVDC coated aluminum foil can achieve:

• Nəmin buxar ötürmə dərəcəsi (MVTR) < 0.1 g/m²·gün
• Oksigen ötürmə dərəcəsi (Oksir) close to 0This effectively extends drug shelf life and ensures efficacy stability.

Hal-hazırda, this material is a vital solution for PTP (Press-Through-Pack) əczaçılıq blister qablaşdırma, packaging for tropical regions, and other high-barrier pharmaceutical packaging applications.

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2. təhlili 8079 Aluminum Foil Base Material

2.1 Composition of 8079 Alüminium ərintisi

8079 aluminum alloy belongs to the 8xxx series. This series is primarily used for ultra-thin foil, əczaçılıq qablaşdırması, qida qablaşdırması, battery packaging, and high-barrier composite materials.

The uniqueness of 8079 lies in the strict control of its iron (Fe) to silicon (Və) ratio, which optimizes rolling performance and ductility while ensuring strength.

Kimyəvi tərkibi

2.2 Ümumi xasiyyət

In the pharmaceutical blister packaging field, 8079 is almost exclusively used in the Oymaq (Tavlanmış, Soft Temper).

The O temper represents a fully annealed state, characterized by high softness, strong elongation, əla formalaşdırma qabiliyyəti, and resistance to cracking during deep drawing.

Importance of O Temper

The blister forming process involves pressing, uzanan, və istilik sızdırması. Excessive foil hardness can lead to cracking, fracturing, pinholes, and poor sealing. Oymaq 8079 maintains stable deformation, improves package integrity, and reduces scrap rates, making it the standard temper for pharmaceutical packaging.

2.3 Common Thicknesses

Different packaging structures have varying thickness requirements.

Ümumi Spesifikasiyalar

Importance of Thickness Control

Foil thickness must be maintained with extremely high consistency. Excessive thickness variation can lead to unstable sealing, inconsistent forming depths, fluctuating barrier performance, and package leakage. High-end pharmaceutical foil typically controls thickness tolerance within ±5% or ±0.001mm to ensure compatibility with high-speed automated packaging equipment.

2.4 Fiziki və mexaniki xüsusiyyətlər

8079 pharmaceutical aluminum foil offers excellent overall performance.

Niyə 8079 More Suitable for Pharmaceutical Foil?

İlə müqayisədə 8011, 8079 offers higher elongation, lower pinhole count, and stronger deep-drawing capability, making it more widely used in high-end pharmaceutical packaging, packaging for tropical regions, and packaging for long-shelf-life drugs.

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3. Nədir 8079 PVDC Coated Aluminum Foil?

8079 PVDC coated aluminum foil is a high-performance composite material for pharmaceutical packaging. Its structure consists of a 8079 aluminum foil substrate coated with a PVDC high-barrier layer. This combination integrates the absolute light barrier of metallic aluminum foil​ with the superior oxygen and moisture barrier of PVDC, resulting in a packaging material with high barrier properties, yüksək sabitlik, and good heat sealability.

3.1 Function of the PVDC Coating

PVDC is one of the most established high-barrier materials in pharmaceutical packaging.

(1) Superior Oxygen Barrier

PVDC has a dense molecular structure, making it difficult for oxygen to penetrate. Its typical Oxygen Transmission Rate (Oksir) var <1 cm³ /(m² 24h), effectively protecting antibiotics, hormonal dərmanlar, and oxidation-sensitive formulations from degradation.

(2) Extremely Low Moisture Vapor Transmission

PVDC can achieve a Water Vapor Transmission Rate (Wvtr) of <0.1 g /(m² 24h), significantly improving the stability of moisture-sensitive products like effervescent tablets, kapsul, probiotics, and herbal preparations.

(3) Kimyəvi Korroziyaya Müqavimət

PVDC offers excellent chemical resistance, tolerating acids, qələvi, and organic solvents, preventing reactions between the packaging material and the drug.

(4) Enhanced Heat Seal Performance

PVDC improves seal strength, seal integrity, and peel stability. It is compatible with various blister base webs like PVC, Pet, PP, and Aclar.

3.2 Functioning in Packaging

In blister packaging, 8079 PVDC coated aluminum foil is typically used as the qapaq folqa.

After packaging, the PVDC layer faces the interior of the blister, functioning to block moisture and oxygen, provide the heat seal, and prevent drug degradation. The outer aluminum foil layer can be printed on, serialized, or marked with anti-counterfeit features to meet pharmaceutical regulations.

3.3 Tipik Struktur

The common structure is as follows:

Some high-end products may include additional layers like anti-counterfeit layers, easy-peel layers, or laser-marking layers to increase market competitiveness.

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4. Niyə seçin 8079 PVDC Coated Blister Foil?

4.1 Üstün Baryer Xüsusiyyətləri

This is its primary advantage. The aluminum foil itself blocks light, qaz, və rütubət. The PVDC coating further seals micro-pores, reducing oxygen and moisture transmission, achieving a near-absolute barrier. This is especially suitable for highly sensitive drugs, tropical markets, and drugs requiring a long shelf life.

4.2 Strong Pinhole Resistance

The 8079 alloy’s fine grain structure, stable ductility, and low-silicon design effectively reduce pinhole formation. The PVDC coating can also cover micro-defects in the foil, providing a dual-layer of protection.

4.3 Excellent Deep-Draw Formability

Oymaq 8079 foil is highly flexible, suitable for deep-cavity blisters, xüsusi formalı qablaşdırma, and high-speed blister forming, effectively reducing the risk of cracking and scrap rates.

4.4 Stable Heat Seal Performance

PVDC has a wide heat seal temperature range, enabling low-temperature, high-speed, and high-strength sealing, making it well-suited for modern high-speed pharmaceutical equipment.

4.5 High Packaging Durability

8079 foil possesses high tear resistance and good mechanical strength, allowing it to withstand compression, friction, and temperature/humidity variations during transportation, effectively protecting the drug product.

4.6 Yüngül Üstünlük

Using ultra-thin aluminum foil helps reduce packaging weight, shipping costs, and carbon footprint, aligning with green packaging trends.

4.7 Əla çap qabiliyyəti

The outer foil layer supports color printing, UV printing, pharmaceutical serialization, and anti-counterfeit printing, meeting the needs of branded drug packaging.

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5. Production Process of 8079 PVDC Coated Pharmaceutical Foil

5.1 Raw Material Preparation

Yüksək təmiz alüminium külçə (Al ≥ 99.7%) istifadə olunur. The Fe and Si content and Fe:Si ratio are strictly controlled via spectroscopic analysis to ensure final performance consistency.

5.2 Folqa Yayma Prosesi

This includes:

1. İsti yuvarlanan:​ The ingot is initially rolled to a thickness of 2–6mm.
2. Soyuq yayma:​ The foil is further thinned, with control over surface roughness, rolling oil, and tension.
3. Yayılmaq:​ The foil reaches the final target thickness (0.006–0.09mm / 6-90μm) with precision controlled by online X-ray thickness gauging.

5.3 Annealing Treatment

Annealing is performed at 250–300°C to relieve rolling stress, optimize the grain structure, and increase softness, achieving the O temper.

5.4 Səthi təmizləmə

Before PVDC coating, the foil must undergo degreasing, təmizlənmə, and corona treatment to increase its surface energy and coating adhesion.

5.5 PVDC Coating Process

Primarily uses gravure coating or precision roll coating.

Online inspection ensures coating uniformity.

5.6 Slitting and Packaging

The final product is slit to various widths (E.G., 60–1700mm). Finished rolls are packaged with moisture barrier, vacuum-sealed, or include desiccants to prevent moisture absorption during transport and storage.

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6. Quality Control System

Onlayn yoxlama

Qalınlığın ölçülməsi daxildir, coating uniformity check, and surface defect detection.

Laboratoriya Testi

• Baryer Xüsusiyyətləri:​ WVTR and OTR testing.
• Mexaniki xüsusiyyətlər:​ Tensile strength, uzlaşma, burst strength testing.
• Packaging Performance:​ Heat seal strength, soyma gücü, coating adhesion testing.
• Safety Testing:​ Residual solvent analysis, heavy metal content, microbiological control.

All testing must comply with international standards and regulations such as FDA, EMA, ISO, and USP.

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7. Tətbiq sahələri

7.1 Pharmaceutical Blister Packaging

8079 PVDC coated aluminum foil is mainly used for pharmaceutical blister packaging, including tablets, kapsul, antibiotiklər, cardiovascular medicines, and hormonal drugs. Its excellent moisture and oxygen barrier properties help protect sensitive medicines from degradation caused by humidity, oksigen, və yüngül məruz qalma.

This material is especially suitable for pharmaceutical products exported to tropical and high-humidity regions such as Southeast Asia, Orta Şərq, and Africa. It maintains stable sealing and barrier performance even under high-temperature and high-humidity storage conditions.

For long shelf-life medicines, 8079 PVDC blister foil helps reduce oxidation, nəm udma, və çirklənmə, ensuring drug stability during transportation and storage.

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7.2 Yüksək səviyyəli qida qablaşdırması

8079 PVDC coated aluminum foil is widely used in high-end food packaging applications such as chocolate, qəhvə, pendir, and ready-to-eat foods. Its high-barrier structure helps preserve aroma, təravətlilik, and nutritional value while preventing moisture penetration and oxidation.

In coffee packaging, the material effectively retains aroma and flavor stability. For chocolate and dairy products, it helps reduce oxidation and extend shelf life. It is also suitable for premium export foods requiring long-term freshness protection.

Compared with ordinary plastic packaging, 8079 PVDC foil offers significantly better oxygen and moisture barrier performance.

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7.3 Health Supplement Packaging

8079 PVDC coated aluminum foil is suitable for health supplements such as fish oil, probiotics, vitaminlər, and Omega-3 products. These products are highly sensitive to oxygen and moisture, which can reduce product effectiveness and stability.

The excellent barrier performance of PVDC coated foil helps prevent oxidation and moisture absorption, extending the shelf life of active ingredients and maintaining product quality during storage and transportation.

It is also widely used for collagen, coenzyme Q10, bitki ekstraktları, and other functional nutritional products.

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7.4 Tibbi Cihaz Qablaşdırması

8079 PVDC coated aluminum foil is widely used in medical device packaging because of its excellent moisture barrier, Sızdırmazlıq etibarlılığı, və təmizlik. It is suitable for diagnostic test strips, medical consumables, sterile products, and in-vitro diagnostic (IVD) qablaşdırma.

For products such as blood glucose test strips and pregnancy tests, moisture protection is critical to maintaining testing accuracy. The high-barrier structure helps reduce contamination risks and improves long-term storage stability.

Its strong sealing performance and puncture resistance also help protect medical products during transportation and handling.

 

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8. Müqayisə 8079 with Other Materials

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9. Niyə seçin 8079 PVDC Coated Aluminum Foil?

The core advantages are summarized below:

• Yüksək maneə:​ Suitable for highly sensitive drugs.
• Lower Pinhole Count:​ Improves packaging security.
• More Stable Heat Seal:​ Compatible with high-speed automated equipment.
• Longer Shelf Life:​ Enables stable storage for 2–5 years.
• Stronger Processing Performance:​ Suitable for deep drawing, high-speed blistering, and automated production.

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10. Nəticə

8079 PVDC coated aluminum foil is a key material in current high-end pharmaceutical blister packaging. The combination of high-performance 8079 alüminium folqa​ and a PVDC high-barrier coating​ delivers ultra-high barrier properties, extremely low pinhole counts, sabit sızdırmazlıq, and excellent deep-draw performance. It effectively meets the stringent modern pharmaceutical industry requirements for drug stability, long shelf life, and high-barrier packaging.

İrəliyə baxıram, as global pharmaceutical packaging standards rise and the number of highly sensitive formulations grows, üçün bazar tələbi 8079 PVDC pharmaceutical aluminum foil is expected to continue expanding.

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Tez-tez verilən suallar

Q1: What is PVDC?

A: PVDC is Polyvinylidene Chloride, a high-barrier polymer with excellent moisture barrier, oksigen maneəsi, and chemical resistance properties, widely used in demanding packaging applications.

Q2: Niyə 8079 alloy suitable for pharmaceutical foil?

A: Çünki 8079 alloy offers high ductility, a low pinhole count, and excellent deep-drawing performance, making it particularly suitable for producing the ultra-thin, complex-formed foils required in pharmaceutical packaging.

Q3: How does the PVDC coating enhance barrier performance?

A: The PVDC coating covers the microscopic pinholes inherent in the aluminum foil itself, further reducing the transmission rate of both moisture vapor and oxygen, thereby enhancing the overall barrier integrity of the packaging.

Q4: Var 8079 PVDC pharmaceutical foil safe?

A: Bəli. Its production and quality control must comply with international pharmaceutical and food packaging regulations and standards such as FDA, EMA, and USP, ensuring its safety.

Q5: bilər 8079 foil be printed?

A: Bəli. The outer foil layer supports various printing processes including color printing, UV printing, anti-counterfeit printing, and serialization, meeting the information labeling and branding needs of modern pharmaceutical packaging.