The
uniqueness of Soarnol®
is not merely its ability to prevent the intrusion of oxygen
from outside air. Because of its polar chemical nature,
it
does not readily absorb non-polar chemicals.
This gives rise to its unique applicability in paper board
packaging of liquids such as juices. In such applications, Soarnol® is
positioned either in direct contact, or nearly direct contact,
with the liquid. The EVOH layer
will not absorb non-polar flavor constituents in the food (whereas
polyolefin would), thereby preserving flavor and freshness.
A typical
example is orange juice. Freshly squeezed orange juice
contains abundant quantities of limonene, an aromatic component.
Polyethylene, which is the innermost layer of an ordinary
juice carton, absorbs limonene, thereby degrading
the flavor of the freshly squeezed juice. But producing
a laminate with
Soarnol®
as the innermost layer prevents the absorption of limonene and
enables the essential flavor of the orange juice to be preserved
for
long
periods
of time. It also prevents oxidation of the vitamin C in the juice,
enabling the flavor and freshness to be further preserved. In
this way, the oxygen barrier property of Soarnol® and its anti-absorption
(anti-scalping) property are combined to deliver a unique
solution for this package.
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