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Brasil
PackTrends
2020
147
quality and new technologies
(hydrophilic): polyglycol, ethylene/propylene glycol;
and an active desiccant component: molecular sieve,
silica gel or combined desiccants. The CSP’s desiccant
polymer can be used as an internal layer of tubes, cap
liner, seals and internal layer of a laminated structure
with aluminum for blister. Concerning the liquid
absorbers, there are many products in the market, such
as Thermarite® or Peaksorb® (Peakfresh Products,
Australia), Toppan™ (ToppanPrintingCo., Japan) and
Dri-Loc (Cryovac Sealed Air, EUA), used for meat, fish,
chicken and fresh products in general. Basically, the
system consists in a superabsorbent polymer located
between two plastic films or non-woven with micro
perforation. The most used absorbent polymers are the
polyacrylate sodium, carboxymethyl cellulose fiber and
amide copolymers.
FIGURE 6.4
Liquid absorber incorporated into
the film for minimally processed
fruits: “Fruit Pop” Pouches
(Maxwell Chase Technologies)
Source: Press Release
Cryovac associated an anti-theft system to
the liquid absorber in the Dri-Loc
®
Theft-Sensor Pad
product, which contains a label called Sensormatic
Ultra-Max
®
label, to be used with the EAS system –
Ultra-Max
®
Electronic Article Surveillance (Figure 6.5).
An example of innovation in this field was given
by the German company Sealpac, which developed a
thermoformed packaging system, for vacuum packing,
with double compartment; the first packs the product
and the second collects and holds the liquid exuded
from the meat, increasing the product shelf life, allowing
the package to be displayed straighten up or hanging on
hooks in the expositors (Figure 6.6).
FIGURE 6.5
Liquid absorbers with
anti-theft system
Source: Press Release
FIGURE 6.6
Liquid absorber in
thermoformed package
Source: Press Release
An observed trend is the association of moisture/
liquid absorbers with other active package technologies,
such as oxygen and aroma absorbers, antimicrobials
and pH controllers, multiplying the benefits of
the active package. The concept is to provide the
synergism reached by the relative humidity control, and
microbiological growth in fresh products, resulting in
combined effects of hurdle technologies.