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Your materials and packaging are in contact with food, medicine, medical device or cosmetic, or are used in industrial environments such as in the construction sector. LNE provides you with its expertise and skills to qualify or evaluate the performance of your products and materials with regard to gas or water vapour transfer phenomena.
Assessing the permeability of materials to gases (air, oxygen) and water vapour to prevent their penetration or allow their evacuation meets different needs depending on your sector of activity:
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Food packaging: avoid spoilage of food and extend its shelf life.
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Construction and insulation: prevent condensation and mold, while remaining airtight to provide thermal insulation.
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Pharmaceutical, medical and cosmetic industries: protect their contents from external aggressions which could affect their physical integrity and health safety. Permeability can in particular be used as proof of a sterile barrier for sterile MD packaging.
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Technical textiles (sports, medical): ensure comfort and protection.
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Automotive and aeronautics industry: managing humidity, protecting against corrosion, or ensuring adequate insulation.
Entrusting permeability measurement to LNE allows you to ensure that the materials used in these industries meet performance and safety requirements while preserving the properties of the products they contain or protect.
Proposed services
Among the proposed characterisations:
- Barrier properties - gas permeability on plastic/aluminium materials and single or multi-layer packaging:
- to water vapour
- to oxygen
- to carbon dioxide
- Adapted temperature (ambient, low or high temperature)
- CO2 losses on capped sparkling or still wine bottles (standardised test)
- Technical expertise in the design of your packaging or finished products.
Resources available
To satisfy these testing needs, the LNE Laboratory features the following set of instruments:
| Instrumentation | Specification | Instrumentation use |
|---|---|---|
| MOCON OXTRAN 2/20, 2/21 and OXTRAN 2/22 L permeability analyser |
Temperature: 10 to 40°C Humidity: 0% RH or 35% to 90% RH Permeability :
|
Oxygen permeability on films, materials or shaped packaging |
| Gas chromatograph coupled to an FID detector and a methanation furnace |
Limit of quantification: 1.5 ppm V/V CO2 Humidity possible on 1 side |
Carbon dioxide permeability on films, materials or shaped packaging, measurement of carbon dioxide losses through capping |
| MOCON PERMATRAN W3/33MG+ permeability analyser |
Temperature: 10 to 50°C Humidity: 5% to 100% RH Permeability :
|
Water vapour permeability on films, materials or shaped packaging |
| Climate chamber |
Temperature: -40 to +180°C Humidity: 10% to 98% RH Characterised under standard test conditions |
Water vapour permeability on films, materials or packaging formed by gravimetric method |
| Single head capper for 29mm crown cork |
Capping pressure: 4412N Types of bottle :
|
Preparation of cylinders for carbon dioxide loss measurements |
Regulations
- NF ISO 2528,
- T54-130,
- ASTM E96/96M,
- ASTM D3985,
- ASTM F 1927,
- ASTM F 1307,
- ASTM F2622,
- ISO 15105-2,
- ASTM F1249,
- NF EN ISO 7783,
- USP 38,
- EN 1062-6,
- NF EN ISO 12572,
- NF EN 13726-2,
- NF EN 1931…
Affected products and materials
- Materials intended to be in contact with foodstuffs (films, objects and consumer products, capping and sealing systems).
- Materials for the building industry (insulation products, coatings, paints and varnishes, etc.),
- Packaging materials for medicines, medical devices, cosmetics
- Technical textiles (sportswear, medical textiles)
- Materials used in certain components in the automotive and aeronautical industry with specific permeability properties.
