Skip to product information
1 of 5

Fresherpack Mylar Foil Bags 5cm x 12cm

Fresherpack Mylar Foil Bags 5cm x 12cm

Say goodbye to pinhole leaks and ruined shelf life—our heavy-duty, food-grade foil bags provide an airtight, odor-proof barrier perfect for long-term sample storage.

4.4 ★★★★★ 209 reviews
Regular price £5.98
Regular price £7.00 Sale price £5.98 (Save £1.02)
Unit price £0.12 each
Sale Sold out
Size

Low stock

  • 4.9/5 Google Store Rating
  • Free 60-Day Returns
  • Free over £30 or £2.99
🛡️ 5.1 Mil Heavy Duty Thickness
☀️ 100% Light & UV Block
🧪 BPA-Free / Food Grade Certified

Our smallest width Mylar foil bag. Foil bags offer a long-term food storage solution. Offering protection from light, moisture and oxygen. Fresherpack foil bags have a real layer of aluminium foil sandwiched between special plastic, this allows them to be easily heat sealed.

Our long but narrow opening foil bag is designed to hold for example coffee sachet sized volume, vitamin samples or other desired product, comes complete with integrated tear notch. Foil bags offer a long-term food storage solution.

Fresherpack premium quality foil bags are a fantastic product for long-term food storage of rice, pulses, dried beans, flour, sugar, seeds and hops or for your precious items, for example photos, vinyl albums, comics, clothes, the list is endless. The size of this bag is 5cm wide by 12cm long. The foil bag opens on the shorter side, with a tear notch on the longer side for easy opening of the bag once sealed, by hand. This size is designed to hold a small sample or similar, with tear notch included for easy opening.

Our premium foil bags are:

  • Thicker than you'd expect - Each side of our bags are 5.1mil (or 130um) thick with two sides to each bag the total thickness is an impressive 10.2mil (or 260um)

  • Lightproof - Due to the real layer of aluminium and not the cheaper sprayed on metal colour version (metallised) which shows pinholes easily

  • Smellproof - Once sealed smells cannot escape, this is due to extra thickness of our premium bags

  • Moistureproof - Once sealed mositure from the air or even ground cannot enter as air tight seal is made, due to premium quality of the bag

  • Boil in the Bag / Freezer Proof - Suitable for boil in the bag, due to special glue used,  for up to 30 minutes and down to - 60 degrees celsius

  • Foodgrade and BPA free - Safe for food contact

To seal these bags use a household clothes iron on the high setting, with no steam or hair crimper.

A quality product made in the USA and are 5.1 mil thick, most are around the 3.5 mil mark many other suppliers don't mention the thickness of the foil bag for this very reason. This extra thickness is important as this offers extra protection from the UV (ultra-violet) in sunlight and also from oxygen penetration for the air around, plus are very hard to puncture accidently. These foil bags are multilayered and have a food safe inner.

Foil bags are usually used with oxygen absorbers, please see the related items below. These remove the oxygen from inside the bag, preserving the shelf life of the food stuffs above for many years, usually up to 10 years. For camping or hiking trips or similar, oxygen absorbers are not really needed.

The 20cc oxygen absorbers we sell work with this bag size, you will need one 20cc oxygen absorber in each foil bag.

⚙️ Technical Data Sheet & Commercial Specifications
Fully verified engineering metrics. Compliant with international standards for commercial, long-term atmospheric barrier integrity.
Dimensions & Gauge
Width 50 mm (±2mm)
Length 120 mm (±2mm)
Material Thickness 131 Microns (±10%) per single wall
(Total 260 Microns combined thickness for sealed bag)
Composite Material Structure
3-Layer High-Barrier Laminate
  • Layer 1 (Outer) PET — 13 micron / 17.1 g/m²
  • Polyurethane Adhesive — 2.6 g/m²
  • Layer 2 (Core) Pure AL Foil — 7 micron / 18.9 g/m²
  • Polyurethane Adhesive — 2.5 g/m²
  • Layer 3 (Inner) Food-Grade PE — 111 micron / 102.1 g/m²
Total Composite Weight 143.2 g/m²
Barrier & Mechanical Integrity
Water Vapour Transfer (WVTR) 0.07 g / (m² · 24h)
Oxygen Transmission (OTR) 0.283 cm³ / (m² · 24h · 0.1Mpa)
Tensile Failure Stress 66.27 N (Standard target: ≥30)
Seal Strength 120 N / 15mm (Standard target: ≥30)
Heat Seal Strength 18 lbs/in² (Standard target: ≥7)
Thermal Sealing Range 200°C to 260°C (Impulse / Constant heat)
Coefficient of Friction (CoF) 0.14 (Kinetic/Static target: ≤0.4)
Stress Testing PASS (Drop & Internal Pressure Rated)
Safety, Chemical Lab Testing & Certifications
Regulatory Compliance ISO 22000:2005 (Food Safety Management)
GB10004-2008 (High-Barrier Plastics Compliance)
Heavy Metals Extraction 0.04 mg/L (Safety Limit: ≤1 mg/L)
Chemical Residues PASS (All evaporation metrics well below strict regulatory limits)

SKU:X0018243B9

View full details