When choosing a spout pouch, many brands focus on the size, spout, or printing. But the laminate structure is what really determines how well the pouch protects your product.
When choosing a spout pouch, many brands focus on the size, spout, or printing. But the laminate structure is what really determines how well the pouch protects your product.
What is a laminate structure?
A spout pouch is made by combining different layers of material, with each layer performing a specific function. Some layers provide strength, while others protect the product from oxygen, moisture, or light.
The combination of these layers is called the laminate structure.
Which laminate should you choose?
There isn’t a single “best” laminate. The right choice depends on your product and how it will be processed and stored.
PET/PE is commonly used for products like liquid soaps and cleaning solutions where standard barrier protection is sufficient.
For products that need better protection from oxygen and light, PET/MetPET/PE offers improved barrier performance without the cost of aluminium foil.
If your product requires maximum shelf life, PET/Aluminium Foil/PE provides one of the highest barrier levels available. It’s widely used for products such as edible oils, juices, sauces, and dairy products.
Products that undergo high-temperature sterilisation require retort laminates, which are specially designed to maintain their strength during the retort process.
Related: Explore our Spout Pouches to see different material options for liquid packaging.
Don't choose based on price alone
A lower-cost laminate may save money initially, but if it doesn’t provide the protection your product needs, the long-term cost can be much higher.
Before selecting a laminate, consider:
- Product type
- Filling temperature
- Required shelf life
- Storage conditions
- Export or local distribution
These factors help determine the most suitable material for your application.
Final Thoughts
The laminate structure is one of the most important parts of a spout pouch, even though customers never see it. Choosing the right material helps protect product quality, improve shelf life, and reduce packaging failures.
If you’re unsure which laminate is right for your product, it’s always worth discussing your requirements with an experienced packaging supplier before production begins.
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References
- Flexible Packaging Association (FPA)
- PMMI – The Association for Packaging and Processing Technologies
- ASTM International – Flexible Packaging Material Standards
