In the tobacco packaging system, preventing moisture penetration and preserving the original flavor of cigarettes are critical factors in maintaining product quality. Cigarettes are highly sensitive to humidity. Once exposed to moisture, their combustion performance deteriorates, and both aroma and taste are negatively affected.
Therefore, aluminum foil with superior barrier properties has become an indispensable core material in cigarette packaging.
Aluminum Foil for Cigarette Inner Liner
Many people refer to it as "tin foil," but in reality, most modern cigarette inner liners are made of aluminum foil laminated paper. It is not a single metal layer but a precisely engineered multi-layer structure:
Base Layer: Liner Paper
Provides stiffness and support, making embossing and forming easier.Barrier Layer: Aluminum Foil
Supplied by MC Aluminum, typically using 8011 Aluminum Alloy or 1235 Aluminum Alloy with a thickness of 0.006–0.007 mm. This layer is responsible for moisture resistance, aroma retention, and light shielding.Functional Layer: Adhesion & Coating
Bonds aluminum foil to paper. Some products include additional protective or decorative coatings.
This structure perfectly combines the flexibility of paper with the barrier performance of aluminum foil, ensuring smooth operation on high-speed packaging machines while providing an excellent protective barrier.
Product Specifications
| Item | Specification |
| Alloy | 1235 / 8011 |
| Temper | O (Fully Annealed) |
| Thickness | 0.006 – 0.007 mm |
| Thickness Tolerance | Within ±5% |
| Width | 10 – 1600 mm |
| Length | C |
| Color | Silver / Gold |
| Inner Diameter | 76 / 152 mm |
| Pinhole Density | ≤ 15 pcs/m² (premium grade near zero) |
| Water Vapor Transmission Rate | ≤ 0.1 g/(m²·24h) |
| Tensile Strength | 50 – 90 N/mm² |
| Elongation | ≥ 2.5% |
| Application | Cigarette inner liner |
| MOQ | 1–3 tons |
Functions of Aluminum Foil in Cigarette Packaging
1. Excellent Moisture Barrier
Aluminum foil is nearly impermeable to water vapor, effectively preventing moisture from entering the package and maintaining stable tobacco humidity.
2. Superior Gas Barrier
It blocks oxygen, reducing oxidation and extending shelf life.
3. Aroma Preservation
Its dense structure prevents the loss of volatile aroma compounds, preserving original flavor.
4. Light Protection
Aluminum foil is opaque, protecting tobacco from UV degradation.
5. Excellent Processability
Soft and flexible, it can be laminated with paper or plastic films and is suitable for high-speed automated packaging lines.
How Is Cigarette Aluminum Foil Produced?
1. High-Purity Raw Materials
Typically made from 1235 aluminum (≥99.35% purity) or higher-strength 8011 alloy.
2. Precision Rolling
Multiple cold rolling passes reduce thickness from several millimeters down to 0.006 mm, with strict control of tension and roll gap.
3. Pinhole Control
A critical quality indicator. High-quality foil maintains extremely low pinhole density per square meter.
4. Lamination Process
In controlled cleanroom conditions, foil is bonded with liner paper using adhesive, then slit into coils for cigarette packaging machines.
5. Embossing & Coloring
Final processes enhance visual appeal with customized textures and colors.
FAQ
1. What is aluminum foil used for in cigarette packaging?
A:It is used as an inner liner to protect tobacco from moisture, oxygen, and light, ensuring freshness and consistent flavor.
2. Why is aluminum foil ideal for moisture protection?
A:Because it has an almost zero water vapor transmission rate, making it one of the most effective barrier materials available.
3. What alloys are commonly used?
A:The most widely used alloys are 8011 Aluminum Alloy and 1235 Aluminum Alloy due to their excellent formability and barrier properties.
4. What is the typical thickness?
A:Typically 6-9 microns, depending on packaging structure and performance requirements.
5. Can aluminum foil be laminated with other materials?
A:Yes, it is commonly laminated with paper or plastic films to improve strength, printability, and usability in automated packaging.
6. Do you accept small orders?
A:Yes, we welcome small orders. Please feel free to contact us, we aim to provide flexible solutions and support all customers.
7. When can I get a quotation?
A:We usually provide a quotation within 24 hours after receiving your inquiry.