8011 O-Temper 0,009 mm aliuminio folija pieno dangteliams
8011 O-Temper 0,009 mm aliuminio folija pieno dangteliams
1. Įvadas
1.1 Apžvalga 8011 O-Temper Aluminum Foil
- Basic Characteristics of 8011 Aliuminio lydinys: Belongs to the Al-Fe-Si series alloy. It features stable composition, puikus apdorojimo našumas, and is free from harmful heavy metal impurities, meeting food-grade standards. It combines good ductility, formuojamumas, ir barjerines savybes, making it suitable for the multi-step processing required for milk caps.
- Meaning of O-Temper: Refers to the fully annealed state. High-temperature annealing eliminates internal stress, resulting in a soft foil with excellent ductility. This prevents cracking and creasing during stamping, making it the optimal temper for milk cap foil.
- Advantages of 0.009mm Thickness: Balances lightweight construction, barjerines savybes, and easy-open functionality. It bonds tightly with various substrates, reducing packaging costs and energy consumption while ensuring controlled peel strength for convenient consumer opening.
1.2 Rinkos paklausa & Industry Background
- Global dairy consumption continues to grow, with emerging markets as the core growth driver, providing a vast market for milk cap foil. Upgraded food safety standards worldwide and the green packaging trend under “Dviguba anglis” goals are driving the widespread adoption of 8011 O-temper foil.
2. Fundamentals of 8011 Aliuminio lydinys
2.1 Cheminė sudėtis 8011 Aliuminio lydinys
- 8011 alloy has an aluminum purity ≥99.0%. Core alloying elements are Fe (0.7%-1.3%) ir Si (0.2%-0.7%), with impurity elements ≤0.1%. Fe and Si refine grains, enhance strength and rolling performance, ensuring foil quality.
- Palyginti su 1235 ir 8079 lydiniai, 8011 offers the best balance of strength, ausmingumas, ir ekonomiškumo, making it the top choice for milk caps. Specific parameters are shown below.
| Lydinio klasė | Aliuminio grynumas | Core Alloying Elements | Key Performance Characteristics | Main Application Scenarios |
|---|---|---|---|---|
| 8011, | ≥99,0 % | Fe (0.7%-1.3%), Ir (0.2%-0.7%) | Subalansuota jėga & ausmingumas, vidutinė kaina, puikus apdirbamumas | Dairy packaging like milk caps |
| 1235, | ≥ 99,35 % | Primarily Mn | Puikus lankstumas, lower strength | Laminate foil for ordinary food packaging paper |
| 8079, | Slightly lower than 8011 | Primarily Fe, Mg | Didelė jėga, poor ductility, difficult to roll, didelė kaina | High-end barrier packaging (pvz., farmacinės lizdinės plokštelės) |
3. Performance Characteristics of 8011 O-Temper 0.009mm Foil
3.1 Pagrindiniai techniniai parametrai
| Veiklos rodiklis | Typical Parameter | Testo standartas | Pastabos |
|---|---|---|---|
| Storis, | 0.009mm (±0,0005 mm) | GB/T 4947-2010 | Can be fine-tuned per customer requirements |
| Tempimo stiprumas, | 70-90 MPa | GB/T 228.1-2010 | O temperamentas, consistent longitudinal/transverse properties |
| Pailgėjimas, | ≥30 % | GB/T 228.1-2010 | Ensures resistance to cracking during stamping |
| Surface Wettability, | 38-42 mN/m | GB/T 14216-2008 | Po gydymo koronavirusu, suitable for coatings & laminavimas |
| Pinholes Density, | ≤3 /m² (Diameter ≤0.03mm) | GB/T 3048.10-2007 | No clustered pinholes, guaranteeing barrier performance |
| Barjeros savybės, | Oxygen TR ≤0.1 cm³/(m²·24h·atm), Water Vapor TR ≤0.1 g/(m² · 24 val) | GB/T 1038-2000, GB/T 16928-2018 | Properties of standalone foil; performance improves after lamination |
3.2 Additional Core Performance Features
- Barjeras & Šviežumo išsaugojimas: Excellent light-blocking, deguonies barjeras, and moisture-proof properties protect dairy nutrition and flavor, inhibit bacterial contamination, and extend shelf life.
- Šilumos sandarumas: Compatible with PE/PP heat seal layers. Heat seal strength ≥3N/15mm ensures leak-proof sealing, suitable for various dairy filling and high-speed production lines.
- Saugumas & Higiena:Netoksiškas, bekvapiai, free from heavy metal impurities, complies with domestic and international food contact standards, safe for direct contact with dairy products.
- Galimybė spausdinti & Dekoravimas: Smooth surface with strong ink adhesion, allowing for printing and embossing to enhance packaging aesthetics and brand recognition.
- Lengvo atidarymo funkcija: Controlled peel strength enables smooth opening without sharp edges, providing a good user experience.
4. Gamybos procesas 8011 O-Temper Milk Cap Foil
4.1 Žaliavos pasirinkimas
- Use aluminum ingots with purity ≥99.7%. After melting and refining, harmful impurities ≤0.001%. Precise control of Fe/Si content; filtration ensures inclusions ≤5μm.
4.2 Valcavimo procesas
- Ingots undergo homogenization at 450-500°C, hot rolling at 350-400°C to 3-5mm, multi-pass cold rolling to 0.015-0.02mm, then twin-roll rolling to 0.009mm with strict precision control.
4.3 Atkaitinimo procesas
- Continuous annealing at 300-400°C for 2-4 hours achieves O-temper softening, eliminates internal stress, prevents edge waving or deformation, and ensures processability.
4.4 Paviršiaus apdorojimas & Dengimas
- Alkaline degreasing and drying. Apply 0.1-0.2μm primer and 1-2μm PE heat seal coating. Corona treatment raises surface tension to 38-42 mN/m for lamination and printing compatibility.
4.5 Pjūvio & Gatavo gaminio apžiūra
- Slit to required widths (width tolerance ±0.1mm). Undergoes multiple inspections including pinholes and thickness. Packaged with moisture-proof materials; strict control of storage/transport temperature and humidity.
5. Laminated Structures for Milk Caps
5.1 Įprastos laminuotos konstrukcijos
| Laminuota konstrukcija | Taikymo scenarijus | Structural Advantages | Suitable Dairy Types |
|---|---|---|---|
| PET/AL/PE, | Yogurt cups, fresh milk bottle seals | Balances aesthetics, kliūtis, ir terminis sandarinimas; highly practical | Jogurtas, šviežio pieno, dairy beverages |
| Paper/AL/PE, | Milk powder cans, protein powder can seals | Rigid, atsparus drėgmei, suitable for rigid containers | Pieno milteliai, protein powder, whey powder |
| AL/Heat Seal Layer, | Small dairy product seals | Paprasta struktūra, maža kaina, suitable for high-speed production | Small yogurt cups, single-serve fresh milk |
| PET/AL/PET/PE, | Premium dairy product seals | High-end appearance, strong protection | Premium yogurt, organic milk |
5.2 Function of Each Layer & Equipment Compatibility
- Išorinis sluoksnis (PET/Paper): Carries printing, provides rigidity. Vidurinis sluoksnis (Aliuminio folija): Core barrier, ensures safety. Vidinis sluoksnis (PE/PP): Seals against leakage.
- Compatible with high-speed filling (300-1000 units/min) and automatic sealing equipment. Withstands 121°C high-temperature sterilization, suitable for various dairy sterilization processes.
6. Key Technical Standards & Quality Requirements
6.1 Tarptautiniai standartai & Bandymo metodai
- Complies with FDA (21 CFR 175.300), ES (EB) Ne 1935/2004 standartus. Follows ISO 22000, ISO 9001 kokybės sistemos. Undergoes multiple tests: skylutės, šilumos sandarinimo stiprumas, paviršiaus švara, ir tt.
6.2 Core Quality Indicators
| Rodiklis | Reikalavimas | Impact of Non-Conformity |
|---|---|---|
| Paviršiaus švara, | No oil/stains, oil ≤5mg/m² | Affects lamination, contaminates dairy |
| Pinholes Rate, | ≤3 /m², Diameter ≤0.03mm | Reduced barrier, product spoilage |
| Storio tolerancija, | ±0,0005 mm | Stamping cracks, unstable heat sealing |
| Šilumos sandarinimo stiprumas, | ≥3N/15mm | Poor seal, leakage risk |
7. Palyginimas su kitomis pakavimo medžiagomis
7.1 Aluminum Foil Cap vs. Plastic Cap
| Palyginimo matmenys | 8011 O-Temper Aluminum Foil Cap | Traditional Plastic Cap |
|---|---|---|
| Barrier/Freshness, | Puikiai, extends shelf life | Vargšas, prone to oxidation/spoilage |
| Eco-Friendliness/Print, | Perdirbamas, excellent print quality | Hard to degrade, average print quality |
| Kaina, | Vidutinis, high overall cost-effectiveness | Lower initial cost, higher loss rate |
7.2 Palyginimas: 8011 prieš. 1235 prieš. 8079 Aliuminio folija
| Turtas | 8011 | 1235 | 8079 |
|---|---|---|---|
| Suitability for Milk Caps, | Optimal, (Balance of processability & lengvai atidaromas) | Good ductility but low strength | High strength but poor formability |
| Formuojamumas, | Puikiai | Gerai | Vargšas |
8. Taikymo scenarijai & Naudoja
8.1 Pagrindiniai taikymo scenarijai
- Dairy Packaging Seals: Covers fresh milk, jogurtas, dairy drinks, pieno milteliai, protein powder, ir tt. Suitable for cups, buteliai, and cans.
- Food Packaging Auxiliary: Used for sealing small foods, sveikatos produktai, ir tt. Leverages barrier properties to extend shelf life on high-speed automated lines.
- Aukščiausios klasės pakuotė: Ideal for organic or imported dairy products, combining sealing performance with premium aesthetics to enhance brand perception.
8.2 Primary Uses
- Sealing Barrier: Isolates oxygen, drėgmės, šviesa, and microbes to prevent oxidation, gedimas, and leakage, ensuring product quality and safety.
- Convenient Usage: Controlled peel strength allows for easy tearing without sharp edges, improving consumer experience for all user groups.
- Brand Enhancement: Printable and embossable surface carries brand information and product identification, boosting aesthetics and recognition.
- Žalia & Ekologiškas:, 100% perdirbamas, aligns with green packaging trends, reduces packaging waste pollution, and meets industry development requirements.
9. Dažnai užduodami klausimai (DUK)
Q1: Why has 8011 O-Temper 0.009mm foil become the preferred material for milk caps?
A1: The core advantage lies in its combination of cost-effectiveness and performance suitability. The Fe/Si ratio in 8011 offers excellent processability and barrier properties. The O-temper ensures crack-free stamping. The 0.009mm thickness balances lightweight construction, lengvas atidarymas, ir išlaidų kontrolę, while meeting food-grade standards—perfectly matching the core needs of dairy packaging.
Q2: Why is the thickness tolerance so strictly controlled at ±0.0005mm?
A2: Thickness tolerance directly impacts processing performance and product quality. Excessive deviation leads to stamping breakage or unstable heat sealing in thin areas, while thick areas increase cost and hinder easy opening. The ±0.0005mm tolerance ensures the foil works flawlessly on high-speed stamping and sealing lines, guaranteeing batch-to-batch consistency.
Q3: Kokie yra pagrindiniai skirtumai tarp 8011, 1235, ir 8079 folijos?
A3:, 1235 has higher purity but lower strength, suitable for ordinary laminates but not milk cap stamping. 8079 has high strength but poor ductility, is harder to roll, and costs more, typically used for pharmaceuticals. 8011 offers the best balance of strength, ausmingumas, ir kaina, making it the optimal choice for milk caps.
Q4: Why is pinhole density controlled at ≤3 /m²? What’s the impact of too many pinholes?
A4: Pinholes compromise the barrier integrity. Excessive pinholes (>3 /m²) allow oxygen, drėgmės, and microbes to enter the package, causing dairy products to oxidize, spoil, and shorten shelf life. Strict control ensures effective barrier performance.
Q5: Which dairy scenarios is this foil suitable for? Can it withstand high-temperature sterilization?
A5: Suitable for fresh milk, jogurtas, pieno milteliai, dairy drinks, ir tt, for cups, buteliai, and cans. It withstands 121°C high-temperature sterilization, fully compatible with various dairy sterilization processes without affecting its performance or food safety.
6 klausimas: How recyclable is 8011 O-temper foil, and does it meet green packaging trends?
A6: This foil is 100% perdirbamas. Post-consumer scrap can be re-melted and reprocessed without generating polluting waste. This aligns perfectly with the green packaging trend driven by “Dviguba anglis” goals and meets the environmental development requirements of the global food packaging industry.
