SOURCE: VERSTRAETE
A highly topical subject in the injection moulding industry is the addition of an O2 barrier to packaging. There is a demand for this feature mainly for products such as salads, cheese and pet foods. An O2 barrier can be added in two ways. On the one hand, two components can be injected, in which an EVOH polymer can be injected between two PP layers.
On the other hand, Printing Company Verstraete in partnership with one of their film suppliers is introducing a film to the market which already possesses a PP-EVOH-PP structure. In designing packaging with IML and an O2 barrier, there is a requirement to cover the container in its entirety with the label.
A container with a base and all-round label was exhibited jointly with Borealis, Husky and Müller at the last K-Messe show. The first barrier tests were positive. The O2 permeability factor of the film being used is 2 cm³/m²/day/bar.
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