Medical Design Briefs - September 2022 - 33

softer for tighter seals and also more suitable
for withstanding high- temperature
sterilization processes.
In addition to the polyethylene family of
plastics, HIPS is also commonly used for
thermoforming in medical packaging.
HIPS plastics are impact-resistant and clear,
and they have excellent hygienic qualities.
Strong Flange and Complex Geometries.
The shape of the packaging typically
differs for medical products. The
entire package must withstand the
temp erature and pressure extremes of
the sterilization process. The flange
must have the required thickness and
rigidity - and smooth surface - to accept
and maintain a hermetic seal to a
Tyvek lid. The sidewalls must also have
adequate and consistent strength and
thickness to prevent cracking and leakage
during transport and handling.
The most challenging aspect of medical
packaging design is often the complex
geometries required to isolate individual
items into separate compartments and to
lock each item in place. When properly
designed and manufactured, undercuts
allow each part to be snapped into place
and held securely.
Elimination of Airborne Particulates.
Most medical packaging applications call
for enclosing the thermoforming machinery
in a protective enclosure to minimize
exposure to airborne particulates that can
cause gaps during the hermetic sealing
process. It is imperative that measures are
taken to eliminate static that will attract
particulates and to ensure that the cutting
process does not generate particulates that
can migrate to the product.
Enclosing the machinery is important
not only for protection against particulates
but also for isolating the system from ambient
air and temperature that can cause fluctuations
in the heating of materials and in
the air pressure of pneumatic components.
n Increasing Automation
All of these special requirements for
medical packaging have led to the widescale
adoption of form/cut/stack thermoforming
systems. Simpler and less-costly
contact heat systems are suitable for only a
small fraction of medical packaging applications
because they lack plug-assist capabilities
required for complex geometries
and the higher clamping forces that form/
cut/stack systems offer. Contact heat systems
are primarily used for simple package
designs and low production volumes.
Medical Design Briefs, September 2022
Form/cut/stack systems are usually enclosed
in a protective envelope, protecting
the process and the product from
airborne particulates and ambient temperature
and humidity. They can be more
fully automated and, therefore, more precisely
monitored and controlled, especially
machines with 100 percent servo motors
and drives.
Investment in automation offers many
advantages in medical packaging manufacturing.
More precision and control
result in much higher repeatability,
which means higher quality products as
well as fewer defects and less waste. The
process improvements achieve faster cycle
times and predictable output, for higher
throughput and scalability.
Medical-grade tubing -
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production requirements
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* Available in a variety of brands, types,
diameters, durometers and materials
* Low minimum order quantities
* Free samples
Stock Materials
* DEHP-free PVC
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Qosina Corp.:
Qosina Europe:
2002-Q Orville Drive North, Ronkonkoma, NY 11779 USA
qosina.com
Viale Giacomo Matteotti, 26, 20095 Cusano Milanino (MI) Italy
+1 631 242-3000
+39 02 66401337
info@qosina.com
info@qosinaeurope.com
www.medicaldesignbriefs.com
33
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Medical Design Briefs - September 2022

Table of Contents for the Digital Edition of Medical Design Briefs - September 2022

Medical Design Briefs - September 2022 - Cov1A
Medical Design Briefs - September 2022 - Cov1B
Medical Design Briefs - September 2022 - Cov1
Medical Design Briefs - September 2022 - Cov2
Medical Design Briefs - September 2022 - 1
Medical Design Briefs - September 2022 - 2
Medical Design Briefs - September 2022 - 3
Medical Design Briefs - September 2022 - 4
Medical Design Briefs - September 2022 - 5
Medical Design Briefs - September 2022 - 6
Medical Design Briefs - September 2022 - 7
Medical Design Briefs - September 2022 - 8
Medical Design Briefs - September 2022 - 9
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Medical Design Briefs - September 2022 - Cov3
Medical Design Briefs - September 2022 - Cov4
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