Films heat-sealable oxygen barrier

Whilst simple in concept, each step requires an understanding of environmental, physical and biological factors that may affect the procedure. Perhaps the most important of the three steps is isolation of the objects. Isolating an object requires construction of a suitable barrier around the object. This means any enclosure system must successfully maintain such a low level of oxygen for extended periods of time, ideally with a minimum of intervention and cost. The enclosure may be hard-walled or soft-walled. The soft-walled, e.g. heat-sealable oxygen barrier film, gives the flexibility to create any sized... 

In 2004, RPC Bebo Nederland launched a range of biodegradable containers manufactured in NatureWork s PLA material. RPC says that PLA offers excellent clarity and has an equivalent oxygen barrier to polypropylene. For sealed packs, RPC Bebo Nederland can also supply a heat-sealable, compostable lidding film, which is manufactured from biodegradable cellulose derived from wood pulp. 

ExxonMobil Bicor films are coated, sealable OPP films with outstanding optical properties, superior machinability, excellent flavor and aroma barrier properties, broad seal ranges, excellent heat-seal and hot-tack strength, and good moisture and oxygen barrier properties. 

Mylar M30. A transparent, polyester packaging film, solvent-coated on both sides with a PVDC copolymer. The coating is heat-sealable and is an excellent moisture- and oxygen-barrier properties. 

Nitrocellulose, when coated on one side of cellulose film, can act as a moisture barrier, but does not affect permeability. A nitrocellulose coating on both sides of the film improves the barrier to oxygen, moisture and odor and enables the film to be heat sealed when broad seals are used. A PVC coating is applied to cellulose using either an aqueous dispersion (MXXT/A cellulose) or an organic solvent (MXXT/S cellulose). In each case the film is made heat sealable and the barrier properties are improved (Fellows, 2000). 

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