In today’s packaging industry, central sealed alufoil bags have become one of the most trusted solutions for food, coffee, tea, and pharmaceutical packaging. Their superior barrier properties and sleek metallic appearance make them ideal for protecting products from moisture, oxygen, and light while maintaining freshness and aroma.
As a professional machinery solution provider, we specialize in customizing complete production lines for central seal pouch manufacturing. Below is a detailed guide on how these bags are made and how you can get the right solution for your needs.
The first step in producing central sealed aluminum foil bags is selecting high-quality laminated films.
Typical structure includes:
Outer layer: PET or BOPP for printing and stiffness
Middle layer: Aluminum foil for light and oxygen barrier
Inner layer: Food-grade PE for heat sealing
This multilayer structure ensures high barrier protection while remaining heat-sealable and durable. All materials must comply with FDA and EU food contact regulations.
Using flexo or gravure printing machines, the outer film layer is printed with your desired design, logo, and product information.
After printing, a laminating machine bonds the layers together with solvent or solventless adhesive, ensuring a strong composite film suitable for central sealing.
The laminated roll is fed into a Central Seal Pouch Making Machine, which performs:
Unwinding and tension control – keeps film alignment stable.
Edge folding and central sealing – forms the bag by joining both sides with a heat-sealed center seam.
Cutting and trimming – creates individual bags of precise size.
Our MJ-series high-speed central seal bag making machines feature:
Servo-driven control for precision
Intelligent temperature regulation
Adjustable bag length and width
Speeds up to 100 cycles/min
photoelectric tracking for printed marks
To ensure the best sealing performance and packaging integrity, every bag undergoes visual inspection or automatic web inspection systems to detect any film misalignment, wrinkles, or seal defects.
This step guarantees that all central sealed alufoil bags meet international food safety and barrier performance standards.
Central sealed alufoil bags are widely used in:
Coffee beans and ground coffee
Powdered drinks and protein mixes
Snacks and nuts
Pet food
Medical and pharmaceutical packaging
Advantages:
Excellent barrier against light, air, and moisture
Long shelf life
Sleek silver appearance
Printable surface for brand promotion
We are currently looking to source central sealed alufoil bags to understand your specific requirements better.
📩 To tailor our offer, could you please share your bag design images (size, layout, and gusset style)?
💻 Also, let us know your availability for an online demo, where we’ll show how our machines can produce your exact bag type efficiently and cost-effectively.
| Specification | Description |
|---|---|
| Material | Aluminum foil (multilayer composite) |
| Seal type | Central sealed |
| Barrier properties | High barrier against moisture, oxygen, and light |
| Inner layer | Food-grade PE |
| Color | Silver |
| Compliance | Meets FDA and EU food packaging regulations |
As a custom machinery solution provider, we deliver turnkey pouch-making solutions that meet global standards and specific packaging requirements.
Let’s create your perfect central sealed alufoil bag system together.
📧 Contact us today for a technical consultation or schedule a live online demo.