Even monolayer, polyamide films are barrier to gases (oxygene, carbon dioxid).
However, polyamide barrier film performances are slightly lower than EVOH. Like EVOH, PA is permeable to water vapor.
Polyamide has an excellent thermal stability due to a high melting point and a very good thermoformability. It withstands steam at temperature up to 140°C.
Polyamide films have also a good resistance to abrasion and shocks.
Main applications are vacuum packing, processed meat, fish, and cheese.
Polyamide films are available in one, 3, 5 and 7 layers |
- LFT : Lay Flat Tube. This is the basic product obtained by blown extrusion, a tubular film. At the end of the process, the plastic film is winded on a core and flattened.
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Mono-layer polyamide film :
- Polyamide or nylon symmetrical or assymmetrical
- No curling effect
- With till 2350 mm depending of the thickness
- Thicknesses till 250 microns (0.25 mm)
- Available in SWS
- Certified BRC IoP
Multi-layers Polyamide films :
PE/PA : Tubular film
- Tubular polyethylene polyamide film
- Very good gases and aroma barrier
- excellent mechanical properties
- for vacuum and pressure resistant bags applications
- fullfilled all food, pharmacopeia and industry requirements
- Sealing properties can be adapted
- Width 450 to 1400 mm
- Thicknesses 30 to 200 microns
- Available only in LFT
PE/PA : SWS
- Flat polyethylene polyamide film
- High puncture resistance
- High line speeds
- Broad heat seal range
- High drop test resistance
- Good machinability
- For vacuum pouches and food packaging
- Width till 2350 mm depending of thickness
- Thickness till 250 microns
- Available in SWS only
- Certified BRC IoP
PE PA PE :
- Polyethylene polyamide polyethylene film
- Good gases and aroma barrier
- appropriate sealing capacities
- Good mechanical resistance.
- High thermal resistance
- Used in lamination and sack liner for food
- Thickness from 30 to 200 microns
- Width from 300 to 1850 mm
- Available
in LFT,SWS, CFS
PE/PA/EVOH/PA/PE
- Polyethylene polyamide evoh flat film
- Very good gases and aroma barrier
- appropriate sealing capacities
- Good mechanical resistance
- High puncture resistance
- High thermal resistance
- width up to 2350 mm depending on thickness
- thickness from 30 to 150 microns
- Available in SWS
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- CFS : Centre fold sheet. It is a lay flat tube cut (or opened) on one side.
- SWS : Single wound sheet. This film is obtained when both edges of a lay flat tube (or tubular film) are cut. Each film is then winded on a core.
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