Barrier 7

A seven-layer film with a high oxygen barrier property and high strength, ideal for long-term food storage

  • Gas barrier properties
  • Non-curl
  • Label adhesion
  • Transparency and gloss
  • High strength
  • Automatic machine compatibility
  • Suitable for heat sealing
  • Pinhole resistant (frozen)
  • Aroma retention property


Barrier 7 consists of seven layers of resin. The barrier property and high strength are achieved by using EVOH resin and NY resin characteristics. It is ideal for applications requiring a high oxygen barrier property, such as packaging for foods that readily oxidize and gas flush packaging. Low melting point L-LDPE is used for the innermost layer, and it can be sealed at low temperatures or even when bags are stacked.

  • High oxygen barrier property of EVOH resin

  • Sealable even when bags are stacked

  • Inhibits drip spread

  • High aroma retention property

  • High label adhesion


  1. High barrier (EVOH) performance

    The EVOH layer helps preserve food for longer and extends shelf life

    EVOH resin is characterized by its high oxygen barrier property, making it ideal for packaging food products that tend to oxidize and for gas flush packaging.

  2. Stack-sealable bag

    Bags can be sealed even when stacked

    Special polyethylene resin is used for the inner layer, which enables low-temperature sealing. Multiple bags can be sealed even when stacked.

  3. Drip prevention bag

    Reduces drip spread and improves appearance

    Due to the low melting point of the inner layer, the inner surface fuses during vacuum boiling sterilization (three minutes at 85°C), suppressing the drip spread and improving the finished appearance.

  4. Highly flavor retention

    Maintains the aroma of freshly prepared food.

    Aromatic polyester resins such as polybutylene terephthalate resin (PBT resin) have the property of retaining the aroma of the contents. This property has been used to impart an aroma-retaining function to the film.

  5. Easy labeling pouch

    Good label adhesion

    Polybutylene terephthalate resin (PBT resin) has a very low water absorption rate and is used for the outermost layer. This minimizes moisture absorbed by the film surface and prevents adhesive loss with the label glue. PBT resin is a hydrophilic resin, and since most label glues are acrylic resin, which is also a type of hydrophilic resin, this technology takes advantage of the characteristics that resins with the same properties tend to bond together.


  • Processed meat products
    • Chilled pork
    • Dry-cured ham
    • Salami
    • Beef jerky
  • Processed seafood products
    • Salmon jerky
    • Salmon roe
  • Other
    • Mayonnaise
    • Cheese
    • Confectionery


Main applications
Processed meat products /
Fisheries field /
Use temperature range
Layer composition
Number of layers
7 layers
Adhesive resin /
Nylon /
Nylon /
Adhesive resin /
Special L-LDPE
50μm /
60μm /
70μm /
80μm /
100μm /
140mm ~ 550mm

Table can swipe left or right

Test item Test method Units 60μm 70μm 80μm 100μm 120μm
Tensile strength JIS K 7127 MPa MD 33 33 32 33 32
TD 31 31 30 30 30
N MD 20 23 27 33 40
TD 19 22 25 31 37
Tensile elongation JIS K 7127 MD 425 425 425 425 425
TD 430 430 430 430 430
Tear strength JIS K 7128 N/mm MD 125 125 125 125 125
TD 135 135 135 135 135
N MD 7.5 8.8 10 13 15
TD 8.1 9.5 11 14 16
Heat sealing strength JIS Z 1707 N/15mm 26 29 33 40 48
Oxygen transmissivity JIS K 7126 cc/m2・24h・atm
(23℃ , 75%RH)
5.3 4.5 3.9 3.1 2.5
Moisture permeability JIS Z 0208 g/m2・24h
(40℃ , 90%RH)
16 14 12.5 9.7 7.5
Puncture strength JIS Z 1707 N 2.4 2.8 3.2 4 4.8

*These are representative values and not guaranteed.


  1. STEP.01


  2. STEP.02

    Specifications meeting / Estimate creation

  3. STEP.03

    Order / Production start

  4. STEP.04

    Shipping / Delivery

  5. STEP.05

    After-sales service


Can it be boiled?
Yes, but the inner surface of the film will heat fuse in three minutes at 85°C.
Can it be frozen?
Yes, it can be frozen down to -40°C.
Can it be printed on?
Yes, it can be.
Can we use an oxygen absorber with it?
Yes, it can be.
Do you have colored films?
This is not in our current lineup, but we can explore the possibility. Please contact us for more information.

Contact us

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