1. Core requirements of food vacuum packaging technology
With the rapid development of pre-prepared dishes, fresh food e-commerce and medical sterilization packaging, food vacuum packaging technology has become a core technical link that the food and pharmaceutical industries cannot ignore.
| Product type | Core requirements | Recommended material structure |
|---|---|---|
| Food products | Good barrier, food safety | PET/AL/PE |
| Fresh products | Moisture resistance, puncture resistance | PET/NY/PE |
| Pharmaceutical products | Sterilization compatibility, high barrier | PA/AL/CPP |
Understanding these differences is the foundation for choosing the right food vacuum packaging technology.
2. Material structure selection
2.1 Short shelf life products (3-6 months)
- Recommended structure:PET/PE or PET/VMPET/PE
- Features:Moderate cost, barrier meets short-shelf-life needs
- Note:Avoid pure PE single-layer film — insufficient barrier
2.2 Medium shelf life products (6-12 months)
- Recommended structure:PET/AL/PE
- Features:Aluminum foil provides excellent barrier at controlled cost
- Note:AL (aluminum foil) has better barrier than VMPET (metallized)
2.3 Long shelf life products (12 months+)
- Recommended structure:PET/AL/PA/PE or PET/EVOH/PE
- Features:Multi-layer high barrier; EVOH provides top-tier oxygen barrier
- Note:Higher cost, suitable for premium-positioned products
For a detailed comparison of material barrier properties, refer to High-Barrier Packaging Material Technology Comparison (HASUPACK related article).
3. Pouch type selection
- Stand-up pouch (Doypack):Mainstream e-commerce choice, excellent 3D display
- Eight-side seal pouch:First choice for premium brands, flat bottom, most stable standing
- Three-side seal flat pouch:Economical choice, suitable for small packaging
4. Three practical pitfalls in vacuum packaging
Pitfall 1: residual oxygen content too high
Solution:Choose high-barrier structures containing AL or EVOH, control residual oxygen in the package to <=1% (nitrogen flushing).
Pitfall 2: insufficient heat-seal strength
Solution:Specify high-quality heat-seal materials, request heat-seal strength test reports (>=3N/15mm).
Pitfall 3: sharp contents puncture the packaging
Solution:Add a NY (nylon) layer to the outer layer for puncture resistance, choose laminated film with thickness >=120μm.
5. Environmental trends
A 2026 survey shows over 60% of consumers pay attention to the environmental impact of packaging when purchasing.
- Mono-material PE structure:Entire pouch recyclable, suitable for medium-shelf-life foods
- With PCR recycled plastic:Outer layer uses laminated film containing 30%-50% PCR material
- Compostable materials:Suitable for foods with short shelf life and low barrier requirements
Questions about or need a custom packaging solution? Welcome toContact OMOPACK. We offer one-stop service from material selection and structural design to printing sampling and mass production, and our professional team provides free customization advice.
