What Is Vacuum Packaging?
Vacuum packaging removes air from a flexible bag or pouch before sealing, creating an oxygen-free environment that dramatically slows spoilage, oxidation and bacterial growth. It is the most widely used technology for extending the shelf life of meat, seafood, cheese, coffee and prepared foods. Packtastic is a specialized vacuum bag manufacturer, supplying co-extruded and laminated vacuum bags in a wide range of sizes, thicknesses and barrier levels.
Vacuum Packaging Requirements
- Oxygen barrier: PA, EVOH and PVDC layers control oxygen transmission to match product shelf-life targets.
- Puncture and tear resistance: PA (nylon) provides toughness for sharp-edged and bone-in products.
- Seal strength and leak resistance: reliable seals prevent vacuum loss during storage and shipping.
- High clarity: transparent bags let buyers inspect product quality.
- Compatibility: works with chamber, nozzle and skin-pack vacuum machines.
Recommended Vacuum Packaging Solutions
- Vacuum Bags - co-extruded PA/PE and PA/EVOH vacuum bags for food and industrial products.
- PVDC & EVOH Barrier Films & Bags - ultra-high-barrier vacuum bags for premium and export products.
- Thermoforming Films - top and bottom webs for vacuum skin packaging (VSP) and thermoform-fill-seal lines.
Material Structures
Common vacuum bag structures:
- PA/PE - the standard vacuum bag; tough, clear, economical.
- PA/EVOH/PE - maximum oxygen barrier for extended chilled shelf life.
- PA/PE with PVDC - high-barrier alternative with good puncture resistance.
- PET/PE - lightweight structure for non-food and lighter applications.
Vacuum Packaging FAQ
What is the difference between PA/PE and PA/EVOH vacuum bags?
PA/PE bags offer good barrier and toughness for most applications. PA/EVOH bags provide a significantly higher oxygen barrier, extending shelf life for premium meat, seafood and cheese.
Can vacuum bags be printed?
Yes, vacuum bags can be printed with brand logos and product information using food-safe inks.
How thick should a vacuum bag be?
Typical thickness ranges from 60 to 120 microns. Thicker bags (90-120u) are recommended for bone-in meat and heavy items; 60-80u suits most food products.
Do vacuum bags work in all vacuum machines?
Most PA/PE bags work in chamber and nozzle machines. For skin-pack machines, use dedicated thermoforming top/bottom webs.