8079 PVDC Coated Aluminium Ntawv Nyiaj rau Blister
Qauv:cov 8079 PVDC Coated Foil
Daim ntawv thov: High-barrier blister packaging for sensitive drugs and supplements.
Kev kho kom haum:Thickness, daim plhaub, luam ntawv.
Daim ntawv pov thawj: FDA, EMA, ISO.
Cov yam ntxwv tseem ceeb:
- Superior moisture/oxygen barrier
- Muaj peev xwm ua tau zoo heev
- Stable heat seal
- Low pinholes
Ntim: Jumbo rolls.
1. Lub hauv paus rau phau ntawv
8079 PVDC coated aluminum foil is a key high-barrier material in pharmaceutical blister packaging. It is extensively used for packaging tablets, tsoom qab, health supplements, medical devices, and high-end food products.
With rising global demands for drug stability, shelf life, thiab kev nyab xeeb, 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 belongs rau 8xxx series ntawm txhuas alloys, known for:
- Extremely low pinhole count
- Zoo heev ductility
- 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 (Polyvinylidene Chloride) is a high-performance barrier polymer, featuring:
- 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.
Yog li ntawd, 8079 PVDC coated aluminum foil can achieve:
- Ya raws vapor kis tus nqi (MVTR) < 0.1 g/m² · hnub
- Cov pa oxygen kis (OTR) close to 0This effectively extends drug shelf life and ensures efficacy stability.
Ziag no, this material is a vital solution for PTP (Press-Through-Pack) Kws Khoos Hluav Taws Xob Hluav Taws Xob Ntim, packaging for tropical regions, and other high-barrier pharmaceutical packaging applications.
2. Analysis of 8079 Aluminum Foil Base Material
2.1 Composition of 8079 Aluminium Alloy
8079 aluminum alloy belongs to the 8xxx series. This series is primarily used for ultra-thin foil, kev ntim tshuaj, Cov Khoom Noj Ntim, battery packaging, and high-barrier composite materials.
The uniqueness of 8079 lies in the strict control of its iron (Fe) to silicon (Thiab) ratio, which optimizes rolling performance and ductility while ensuring strength.
Tshuaj Muaj Tshuaj
| Lub ntsiab | Cov ntsiab lus ntau | Primary Function |
|---|---|---|
| Aluminium (Al) | ≥ 98.0% | Provides the base barrier properties |
| Hlau (Fe) | 0.7 - 1.3% | Increases strength, refines grain structure |
| Silicon (Thiab) | 0.05 - 0.30% | Improves rolling performance |
| Tooj (Cu) | ≤ 0.05% | Impurity control |
| Tooj dawb (Zn) | ≤ 0.10% | Impurity control |
| Lwm tus | ≤ 0.15% | Trace element control |
2.2 Common Temper
In the pharmaceutical blister packaging field, 8079 is almost exclusively used in the Saib Tauj (Ib qho tseem ceeb, Soft Temper).
The O temper represents a fully annealed state, characterized by high softness, strong elongation, zoo heev formability, and resistance to cracking during deep drawing.
Importance of O Temper
The blister forming process involves pressing, ncab, thiab tshav kub khi. Excessive foil hardness can lead to cracking, fracturing, pinholes, and poor sealing. Saib Tauj 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.
Common Specifications
| Daim ntawv thov | Thickness Ntau Yam |
|---|---|
| Standard PTP Ntawv Nyiaj | 20 - 30 μm |
| High-Barrier Blister Packaging | 25 - 30 μm |
| Foil for Tropical Climates | 25 - 35 μm |
| Cold-Forming Aluminum-Aluminum Packaging | 40 - 65 μm |
| Flexible Packaging Laminates | 6 - 20 μm |
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 Physical thiab Mechanical Properties
8079 pharmaceutical aluminum foil offers excellent overall performance.
| Khoom | Tus nqi | Muaj nuj nqi |
|---|---|---|
| Tensile zog | ≥ 100 - 150 MPa | Ensures packaging strength |
| Elongation | 3.5% - 7% | Enhances deep-drawing capability |
| Qhov ntom | 2.70 g/cm³ | Enables lightweight packaging |
| Lub zog tawg | 80 - 270 Kpa | Resistance to internal pressure |
| Kev tswj cov pinhole | ≤ 1 PCS / M² | Ensures high barrier properties |
| Tuab ntaus | Ã 5% | Improves equipment runnability |
Vim li cas 8079 More Suitable for Pharmaceutical Foil?
Piv rau 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.
3. Dab tsi yog 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, high stability, 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 (OTR) yog <1 cmy /(24.), effectively protecting antibiotics, tshuaj hormonal, and oxidation-sensitive formulations from degradation.
(2) Extremely Low Moisture Vapor Transmission
PVDC can achieve a Water Vapor Transmission Rate (WVTR) ntawm <0.1 g /(24.), significantly improving the stability of moisture-sensitive products like effervescent tablets, tsoom qab, probiotics, and herbal preparations.
(3) Chemical Corrosion Resistance
PVDC offers excellent chemical resistance, tolerating acids, alkalis, and organic solvents, preventing reactions between the packaging material and the drug.
(4) Enhanced Heat Seal Performance
PVDC improves seal strength, foob kev ncaj ncees, and peel stability. It is compatible with various blister base webs like PVC, Xuas, PP, and Aclar.
3.2 Functioning in Packaging
In blister packaging, 8079 PVDC coated aluminum foil is typically used as the lidding ntawv ci.
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 Hom qauv
The common structure is as follows:
| Txheej | Muaj nuj nqi |
|---|---|
| Luam Txheej | Branding and information display |
| Primer Layer | Enhances ink adhesion |
| 8079 Aluminium Ntawv Nyiaj Substrate | Primary barrier layer (blocks light, gas, ya raws) |
| PVDC txheej | High barrier layer (blocks oxygen, ya raws) |
| Thaum tshav kub kub Seal Txheej | Seals to PVC or other blister base webs |
Some high-end products may include additional layers like anti-counterfeit layers, easy-peel layers, or laser-marking layers to increase market competitiveness.
4. Vim li cas thiaj xaiv 8079 PVDC Coated Blister Foil?
4.1 Superior Barrier Properties
This is its primary advantage. The aluminum foil itself blocks light, gas, thiab ya raws. 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
Cov 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
Saib Tauj 8079 foil is highly flexible, suitable for deep-cavity blisters, ntim tshwj xeeb zoo li, 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, kev sib txhuam, and temperature/humidity variations during transportation, effectively protecting the drug product.
4.6 Lightweight Advantage
Using ultra-thin aluminum foil helps reduce packaging weight, shipping costs, and carbon footprint, aligning with green packaging trends.
4.7 Zoo heev Printability
The outer foil layer supports color printing, UV printing, pharmaceutical serialization, and anti-counterfeit printing, meeting the needs of branded drug packaging.
5. Production Process of 8079 PVDC Coated Pharmaceutical Foil
5.1 Raw Material Preparation
High-purity aluminium ingots (Al ≥ 99.7%) yog siv. The Fe and Si content and Fe:Si ratio are strictly controlled via spectroscopic analysis to ensure final performance consistency.
5.2 Foil Rolling Process
Qhov no suav nrog:
- Kub Rolling: The ingot is initially rolled to a thickness of 2–6mm.
- Cuav Dab: The foil is further thinned, with control over surface roughness, rolling oil, and tension.
- Tiav Diav Daus: 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 Nto Kho
Before PVDC coating, the foil must undergo degreasing, ntxuav, and corona treatment to increase its surface energy and coating adhesion.
5.5 PVDC Coating Process
Primarily uses gravure coating or precision roll coating.
| Parameter | Cov Khoom Nquag Yog |
|---|---|
| Txheej hnyav | 5 - 120 g / m² |
| Common Specification | 20 - 30 g / m² |
| Txheej Thickness | 1 - 30 μm |
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.
6. Quality Control System
Kev soj ntsuam online
Xws li kev ntsuas thickness, coating uniformity check, and surface defect detection.
Laboratory Testing
- Barrier Properties: WVTR and OTR testing.
- Mechanical Properties: Tensile strength, elongation, burst strength testing.
- Packaging Performance: Heat seal strength, peel zog, 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.
7. Chaw thov
7.1 Pharmaceutical Blister Packaging
8079 PVDC coated aluminum foil is mainly used for pharmaceutical blister packaging, including tablets, tsoom qab, tshuaj tua kab mob, cardiovascular medicines, and hormonal drugs. Its excellent moisture and oxygen barrier properties help protect sensitive medicines from degradation caused by humidity, oxygen, thiab lub teeb raug.
This material is especially suitable for pharmaceutical products exported to tropical and high-humidity regions such as Southeast Asia, Middle East, thiab 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, noo noo nqus, thiab paug, ensuring drug stability during transportation and storage.
7.2 High-End Food Ntim
8079 PVDC coated aluminum foil is widely used in high-end food packaging applications such as chocolate, dej kas fe, cheese, and ready-to-eat foods. Its high-barrier structure helps preserve aroma, tshiab, 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.
7.3 Health Supplement Packaging
8079 PVDC coated aluminum foil is suitable for health supplements such as fish oil, probiotics, Cov vitamins, 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, tshuaj ntsuab extracts, and other functional nutritional products.
7.4 Ntim Cov Khoom Siv Kho Mob
8079 PVDC coated aluminum foil is widely used in medical device packaging because of its excellent moisture barrier, sealing kev ntseeg tau, and cleanliness. It is suitable for diagnostic test strips, medical consumables, sterile products, and in-vitro diagnostic (IVD) ntim.
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.
8. Kev sib piv ntawm 8079 with Other Materials
| Hom | Khoom siv / Txheej | Elongation | Pinhole suav | Deep-Draw Performance | Oxygen Barrier | Moisture Barrier | Heat Sealability | Kev tsim nyog / Ntsiab nta | Tus nqi |
|---|---|---|---|---|---|---|---|---|---|
| Aluminum Foil Alloy | 8079 Ntawv nyiaj | Siab dua | Qi dua | Zoo heev | Zoo heev | Zoo heev | Zoo heev | Stronger suitability for high-barrier pharmaceutical packaging | Slightly Higher |
| Aluminum Foil Alloy | 8011 Ntawv nyiaj | Lub hom phiaj | Xws luag | Zoo | Zoo | Zoo | Zoo | Standard pharmaceutical blister packaging applications | Qi dua |
| Txheej Khoom | Pvdc | — | — | — | Zoo heev | Zoo heev | Zoo heev | Best overall performance, mainstream for pharma high-barrier packaging | Nruab nrab-siab |
| Txheej Khoom | EVOH | — | — | — | Zoo heev | pluag | Ncaj ncees | High oxygen barrier, but sensitive to moisture | Nruab nrab |
| Txheej Khoom | Acrylic | — | — | — | Zoo | Zoo | Zoo | Balanced barrier and sealing performance | Nruab nrab |
| Txheej Khoom | PE | — | — | — | Ncaj ncees | Zoo | Zoo heev | General barrier performance with excellent sealing capability | Qi |
9. Vim li cas thiaj xaiv 8079 PVDC Coated Aluminum Foil?
The core advantages are summarized below:
- Siab dua Barrier: 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.
10. Xaus
8079 PVDC coated aluminum foil is a key material in current high-end pharmaceutical blister packaging. The combination of high-performance 8079 aluminium ntawv ci and a PVDC high-barrier coating delivers ultra-high barrier properties, tsis tshua muaj pinhole suav, ruaj khov sealing, and excellent deep-draw performance. It effectively meets the stringent modern pharmaceutical industry requirements for drug stability, long shelf life, and high-barrier packaging.
Saib tom ntej, as global pharmaceutical packaging standards rise and the number of highly sensitive formulations grows, kev ua lag luam xav tau 8079 PVDC pharmaceutical aluminum foil is expected to continue expanding.
FAQ
Qi1: What is PVDC?
A: PVDC is Polyvinylidene Chloride, a high-barrier polymer with excellent moisture barrier, oxygen barrier, and chemical resistance properties, widely used in demanding packaging applications.
Q2: Vim li cas 8079 alloy suitable for pharmaceutical foil?
A: Vim 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.
Qi4: Yog 8079 PVDC pharmaceutical foil safe?
A: Yog lawm. 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: Ua tau 8079 foil be printed?
A: Yog lawm. 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.
