Aluminum blister foil is widely used for the hard packaging of medical and pharmaceutical products, particularly suitable for tablets, capsules, and pills. Typically, the thickness of this aluminum foil ranges from 25 to 28 microns.
Blister Aluminum Foil has a heat-seal coating on its glossy side and a printed treatment coating on its matte side; these coatings comply with food safety and environmental standards.
Blister Aluminum Foil Material Properties
- Alloy Type: Blister aluminum foil primarily uses 8011 and 8021 alloys.
- Coatings: Includes polyurethane and epoxy resin-based bonding promoters, heat-seal coatings, and release coatings.
- Colors and Printing: Offers a variety of standard or custom colors, and supports use with printed cards to enhance visual appeal.
Specification of blister aluminum foil
| Typical alloy | 8011, 8021, 8079 |
| Temper | O, H14, H18 |
| Thickness(mm) | 0.015-0.08 |
| Width (mm) | 50-1600 |
| Length (mm) | Coil |
| Treatment | mill finish |
| Functions | High obstruction, heat insulation, air tightness, printable, breakable in slightly. |
| Standard | ISO SGS ASTM ENAW |
| Price terms | LC/TT/DA/DP |
| Packaging | Standard seaworthy export packaging. Wooden pallets with plastics protection for the coil and sheet. |
As a large manufacturer of pharmaceutical aluminum foil, Haomei Aluminum provides high-standard 8011, 8021, and 8079 pharmaceutical packaging foils. These foils undergo rigorous pinhole testing, degreasing processes, and gauge control to ensure they achieve exceptional sealing performance during the lamination process, thereby perfectly protecting the quality of the pharmaceutical products.
Blister packaging is an economical, effective, and ideal packaging choice, offering purity, safety, and portability, while protecting product quality throughout the transportation process.
Advantages of Haomei Blister Aluminum Foil
1. Ensures Clean Aluminum Foil Surface
Cleaning Process: Haomei Aluminum optimizes the degreasing effect of the rolling mill to ensure that the produced aluminum foil surface is clean and safe. Improvements include modifying the rolling mill's cylinder cleaner, adding oil curtains behind the exit device to prevent oil contamination, and upgrading the oil splash board and air nozzles. These enhancements ensure the cleanliness of the aluminum foil surface, making it suitable for pharmaceutical packaging.
2. No Slackness on Both Sides of the Foil
Cooling Oil Spraying: A cooling oil spraying device is used on the roughing mill, with regular inspections and maintenance to reduce lateral or local slackness on both sides of the aluminum foil. This ensures stability and consistency during the production process, preventing slackness issues at the edges of the foil.
3. High Tensile Strength
Process Control: By strictly controlling the rolling speed and alloy composition of the foil, Haomei Aluminum produces pharmaceutical foils with high tensile strength. This reduces impurities and ensures excellent performance, meeting the high requirements for pharmaceutical packaging.
These advantages make Haomei Aluminum's blister aluminum foil outstanding in pharmaceutical packaging, effectively meeting the demands for packaging, and providing better protection and safety.
Blister Aluminium Foil Thickness
| STANDARD SIZE | ||
| Alu Foil Thickess (mm) | 0.025 – 0.028 | 0.02 – 0.023 |
| Tolerance (mm) | +/- 8% of AL foil | |
| Density (GSM/CC) | 2.71 | 2.71 |
| Alu Foil Wt (GSM) | 68 | 54 – 67 |
| Alu Foil Surface | Matt / Bright | |
| Temper | Hard Temper | |
| Primer (GSM) Max | 1 – 1.5 | |
| Heat Seal Lacquer | 3-5 GSM (Standard) | |
| 6-8 GSM (Special) | ||
Blister Aluminum Foil 8011 8021 8079 Chemical Composition
| Ingredient | Si | Fe | Cu | Mn | Mg | Cr | Zn | Ti | Other | Al |
| Content | 0.5-0.9 | 0.6-1 | 0.1 | 0.2 | 0.05 | 0.05 | 0.1 | 0.08 | 0.15 | Margin |
| 8011 Aluminum Foil | ||||||||||
| Alloy No. | Si | Fe | Cu | Zn | Others | Al |
| 8079 | 0.050 – 0.30 | 0.70 – 1.3 | ≤ 0.050 | ≤ 0.10 | ≤ 0.15 | REMAIN |
| 8079 Aluminum Foil | ||||||
| Alloy No. | Si | Fe | Cu | Mn | Mg | Zn | Others | Al |
| 8021 | ≦0.15 | ≦1.7 | ≦0.05 | ≦0.05 | ≦0.05 | ≦0.05 | ≦0.05 | Remain |
| 8021 Aluminum Foil | ||||||||
Blister Aluminium Foil Applications
Blister aluminium foil is widely used for pharmaceutical packaging, especially for capsules, tablets, powder granules, and liquid sachets. It effectively protects medications, ensuring their quality during storage and transportation.
- Typical Alloy: 8021 Aluminium Foil
- Material State: O
- Thickness (mm): 0.04-0.065
- Width (mm): 100-1600
- Typical Products: Blister packs, etc.
Blister packaging involves placing medications into blisters or blister packs made from thermoformed plastic sheets, which are then heat-sealed onto aluminium foil coated with protective agents and adhesives. Blister packaging aluminium foil can be used in a single machine to complete printing, coating with protective agents and adhesives, and corresponding drying processes, making it suitable for high-volume production and a primary choice in the pharmaceutical field.
Blister Aluminium Foil effectively protects medications from ultraviolet light, moisture, and contamination. Opaque blisters also protect light-sensitive products from UV damage.
Blister Aluminium Foil Manufacturing Process
- 1. Blister Design: Includes thermoformed plastic blisters (blister film) and aluminium foil seals. Medications are stored in the cavities of the thermoformed blisters and sealed with aluminium foil.
- 2. Sealing Process: Heat seal lacquer is applied to the aluminium foil, which, when combined with the plastic material of the blister through the correct combination of time, pressure, and heat, forms a perfect seal to protect the medication.
Blister Aluminium Foil Types
In pharmaceutical packaging, blister packaging is a highly popular solution. There are two main types of blister packaging based on the materials used: Alu-PVC and Alu-Alu.
- Hard Aluminium Foil: Traditionally used, with lower elongation and easier to rupture, suitable for quick-release medications.
- Soft Aluminium Foil: Higher elongation, requiring more force to puncture, considered to offer better child safety.
Alu-Alu Blister Packaging
- Structure: Multi-layer construction using aluminium-based materials as both the lid and base of the blister packaging.
- Protective Function: The aluminium foil layer plays a crucial role in protecting the contents of the blister cavity. It effectively blocks moisture, air, and UV light, extending the shelf life of medications and enhancing tamper resistance.
- Application: Ideal for packaging sensitive medications due to its excellent protective performance.
Alu-PVC Blister Packaging
- Structure: Composed of a transparent PVC film and an aluminium foil layer. The PVC film serves as the base, and the aluminium foil layer is coated on it to form the blister packaging.
- Protective Function: The PVC film provides a strong and flexible base, while the aluminium foil layer forms a protective barrier against moisture, oxygen, and light, preventing medication degradation.
- Application: This combination of materials is widely used for pharmaceutical packaging, particularly where high protection requirements are needed.
- Alu-Alu blister packaging is suitable for medications with extremely high protection requirements, achieving effective protection through a multi-layer aluminium foil structure.
- Alu-PVC blister packaging combines the sturdiness of the PVC film with the protective capability of the aluminium foil, providing a flexible and effective medication protection solution.
| Alu-Alu Packaging | Alu-PVC Packaging | |
| Composition | Aluminum foil layer sandwiched between plastic film layers | Aluminum foil layer with a layer of polyvinyl chloride (PVC) |
| Barrier Properties | Exceptional shield against humidity, oxygen, and UV rays | Good barrier against moisture and light |
| Visibility | No visibility for the contents inside the blister cavities | Transparent PVC film for excellent product visibility |
| Tamper Resistance | Enhanced tamper resistance with features like blister perforations or tear lines | Can be made tamper-resistant with appropriate blister designs |
| Flexibility | Less flexible, suitable for standard-sized blisters | More flexible, suitable for various blister shapes and sizes |
| Cost | Generally more expensive | Generally more economical |
| Heat Resistance | Aluminum-based materials with good resistance to temperature changes | Plastic-based materials with limited heat resistance |
| Recyclability | Less recyclable due to a combination of materials | More recyclable with separate PVC and aluminum recycling |
| Shelf Life | Extended shelf life due to excellent barrier properties | Good protection but slightly inferior barrier properties |
Blister Aluminium Foil Related Questions
What foil is used in blister packaging?
Blister packaging typically uses aluminium foil, such as 8021 or 8011.
How thick is aluminum foil for blister packaging?
The thickness is approximately 25 microns (μ) for hard aluminium foil blister film. If medication needs to be taken, it can be pushed through the hard aluminium. The film's hardness facilitates what is known as push-through opening.
What material is used for blister packaging?
The materials used for blister packaging are primarily aluminium foil and plastic sheets (such as PVC).
What is the difference between strip foil and blister foil?
Strip foil is used for strip packaging of medications, while blister foil is used for blister packaging, providing higher protection.