Choosing a suitable vacuum packer is very important, but the pouch must also match your product, machine, and storage or cooking conditions.
A pouch that is too light may puncture during handling, while an unnecessarily heavy bag can increase packaging costs without providing any benefit.
When selecting vacuum packer bags, consider three questions:
- What micron thickness suits the physical demands of your product?
- What pouch size fits both the food item and your machine's chamber?
- How should the pouch be loaded, positioned, and sealed for a leak-proof result?
Understanding how film thickness, material construction, and pouch dimensions work together can help protect products, reduce waste, and maintain an efficient prep/production line.
What Does “Micron” Mean?
A micron (sometimes referred to as a micrometre and written as µm) is equal to one-thousandth of a millimetre (0.001mm). For example:
- A 70-micron pouch has a film thickness of 0.07mm.
- A 90-micron pouch has a film thickness of 0.09mm.
- A 120-micron pouch has a film thickness of 0.12mm.
As a general rule, a higher micron rating indicates a physically thicker pouch with greater resistance to puncturing and rough handling.
However, two bags of the same thickness will not necessarily perform the same. Material quality, puncture-resistance additives, and manufacturing quality control all affect performance.
What Are Vacuum Pouches Made From?
Most high-performance commercial vacuum pouches are manufactured from a multilayer PA/PE (Polyamide/Polyethylene) film. Each material performs a different function:
- Polyamide or PA: Provides mechanical strength, toughness, and an oxygen barrier.
- Polyethylene or PE: Provides flexibility, moisture resistance, and the heat-sealing surface that fuses when pressed against the machine’s heated seal bar.
While micron rating reflects physical thickness, it does not determine the overall performance. Oxygen Transmission Rate (OTR), Moisture Vapor Transmission Rate (MVTR), sub-zero flexibility, and thermal limits for cooking must be verified on the manufacturer's specification sheet.
What Micron Vacuum Bag Do You Need?
To determine which micron vacuum bag is the most suitable, match the characteristics of your food against the physical demands placed on the packaging.
| Thickness Range | Commercial Applications | Operational Considerations |
|---|---|---|
| 50–60 microns | Lightweight, smooth products with a low puncture risk (e.g., ground spice mixes, soft garnishes). | Highly economical, but offers limited resistance to rough handling, freezing, or sharp edges. |
| 65–70 microns | Boneless meat joints, poultry breasts, fish fillets, cheese blocks, cooked deli meats, and daily prep. | The industry-standard, general-purpose commercial thickness for smooth food items. |
| 80–90 microns | Large or irregular cuts, hard cheeses, frozen items, and light bone-in chops. | Increased tensile strength and puncture resistance for demanding storage or transit. |
| 100–130+ microns | Sharp bone-in cuts (lamb racks, T-bones), whole shellfish, crabs, and long-term deep freezing. | Heavy-duty protection against sharp points, though physical bone guard tape and Soft Air may still be required. |
These figures represent indicative industry ranges. Always test new pouch specifications under actual storage, freezing, and transport conditions.
How To Extend Shelf Life
A common industry misconception is that switching to a higher-micron bag automatically extends food shelf life. A thicker pouch may provide better physical protection against tears and punctures, but shelf life is also affected by:
- The film’s oxygen and moisture barrier.
- The integrity of the seal.
- Product quality before packing.
- Hygiene during preparation and filling.
- Initial microbiological levels.
- Processing conditions.
- Storage temperature and cold-chain control.
- The business’s validated shelf-life procedures.
Vacuum packing limits oxygen but does not sterilise food. Some microorganisms can grow under low-oxygen conditions. Chilled vacuum-packed food must therefore be covered by suitable food-safety and shelf-life controls. Further information is available in the Food Standards Agency’s guidance on vacuum-packed chilled foods.
Smooth vs. Embossed Bags
Not all vacuum bags work with every type of machine.
Smooth pouches
Smooth pouches are normally used in chamber vacuum packers. The complete pouch is placed inside the chamber, and air is removed from both the chamber and the open pouch. The pouch therefore does not need textured channels.
Embossed pouches
Embossed or channelled pouches are normally used with external suction sealers. Their textured surface creates channels through which the machine can draw air while the pouch opening is clamped.
Smooth pouches will generally not evacuate reliably in a basic external suction machine because they do not provide these air channels. Embossed bags may work in some chamber machines, but they are usually unnecessarily expensive for that purpose.
Choosing the Correct Pouch Size
A vacuum pouch must fit both the food product and your vacuum packer's internal chamber dimensions.
When measuring a 3D product (such as a roast joint or cheese block), do not rely solely on its flat surface footprint. Factor in the product's height and depth, leaving at least 50mm to 70mm of empty pouch space above the food line to sit flat across the seal bar.
The pouch should:
- Enclose the product without being stretched tightly.
- Lie within the chamber without obstructing the lid.
- Sit flat across the seal bar.
- Remain free from folds and wrinkles in the sealing area.
- Leave enough space between the food and the seal.
- Be narrower than the machine’s usable seal-bar length.
| Pouch Size | Commercial Use |
|---|---|
| 140 × 170mm | Individual herb portions, compound butter logs, cheese wedges, single-serve garnishes. |
| 200 × 200mm | Single burger patties, individual steaks, small boneless chops, deli portions. |
| 250 × 300mm | Medium steaks, chicken breasts, pre-sliced deli meats, meal prep portions. |
| 300 × 300mm | Wider meat cuts, medium cheese blocks, grouped sausage packs, large fish fillets. |
| 400 × 400mm | Large primal joints, bulk catering portions, wholesale diced meat packs. |
| 400 × 600mm | Long pork loins, whole fish, large bone-in legs, bulk factory processing. |
The dimensions of your vacuum packer’s internal chamber and seal bar length dictate the maximum pouch dimensions you can run:
Compact Tabletop Machines
Ideal for tabletop prep areas running pouches from 140 x 170mm up to 300 x 300mm. Some (or 400 x 400mm on XL chambers).
(Henkelman Mini Jumbo, Jumbo 42, Boxer 42/42XL, Aero 42)
Floor-Standing Machines
Heavy-duty, high-capacity single chambers designed to handle large 400 x 600mm pouches or multiple smaller pouches per cycle across double seal bars.
(Falcon 52/80, Marlin 52/90, Polar 52/80/110)
Double-Chamber Machines
Industrial production units built for continuous output, allowing operators to load one chamber side while the other cycle runs.
(Falcon 2-60, Polar 2-50/2-95)
How to Store and Care for Unused Vacuum Bags
Vacuum pouches are not durable equipment. Unused stock must be protected from contamination, ageing, and physical damage before it’s used.
Good practice includes:
- Keep bags in their original box or another clean, covered container.
- Store them in a clean, dry area.
- Keep packaging off the floor and away from waste, chemicals, and cleaning products.
- Protect bags from direct sunlight, heaters, and excessive temperature changes.
- Do not place heavy equipment or boxes on top of pouches.
- Avoid bending, crushing, or creating permanent creases across the sealing area.
- Keep sharp knives, staples, and damaged box edges away from exposed bags.
- Remove only the quantity needed for the immediate production run.
- Handle the pouch opening as little as possible.
- Rotate stock on a first-in, first-out basis.
- Retain the packaging label, batch details and food-contact documentation for traceability.
- Follow any shelf-life and storage conditions supplied by the manufacturer.
Government guidance requires wrapping material to be stored so that it is protected from contamination and kept clean.
After sealing, avoid throwing or dragging packs across abrasive surfaces. Do not stack heavy products on fragile packs, and check for punctures before the food enters storage.
Treat commercial food pouches as single-use unless the manufacturer explicitly confirms that they can be safely cleaned and reused. Discard bags that are contaminated, damaged, excessively creased, or no longer seal reliably.
Sous Vide, Freezing, and Hot-Fill Applications
Micron rating alone does not determine temperature tolerance. Standard PA/PE pouches are engineered for chilled storage, but prolonged thermal processing requires certified cook-in pouches.
Before using pouches for sous-vide cooking, pasteurisation, or hot filling. Before applying heat, check the supplier’s food-contact documentation for:
- Permitted food types.
- Maximum and minimum temperatures.
- Maximum contact or cooking duration.
- Suitability for freezing, reheating or pasteurisation.
- Any restrictions relating to fatty, acidic or alcoholic foods.
- Recommended sealing conditions.
Matching your pouch thickness, size, and sealing settings to your specific food product eliminates bag punctures, reduces packaging waste, and safeguards your shelf life.
Explore our full range of professional vacuum packer bags and commercial vacuum packers. Have questions about pouch compatibility? Contact the team for tailored advice.