Package Integrity: Methods of Detection - ASTM · PDF filePackage Integrity: Methods of...
Transcript of Package Integrity: Methods of Detection - ASTM · PDF filePackage Integrity: Methods of...
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Committee F02 on
Flexible Barrier Packaging
Package Integrity:
Methods of Detection
Wendy Mach
Packaging Section Leader,
Nelson Laboratories.
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Agenda
Define package integrity
Define Leak
Methods of detection (ASTM options)
Visual Inspection
Dye Penetration
Bubble Emission
Container Closure
Helium Tracer gas
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What is Package Integrity?
ASTM F17-08
“the physical capability of a given
package to protects its contents with the
desired level of protection over a
defined period of service.”
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Package Integrity
A barrier to physical,
microbiological or chemical
challenges
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What is a Leak?
ASTM Definition – F17-08
“ Any opening in a flexible packaging that is
contrary to intention and either lets contents
escape or permits substances to enter.”
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Example of Leak
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Leak rates are continuous
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ASTM test methods
Non-destructive Destructive
Visual Inspection Bubble Emission
Pressure Decay Dye Penetration
Tracer Gases Tracer Gases
Vacuum Decay
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Visual Inspection
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Visual Inspection
Human Leak Inspector
Easiest and Least Expensive
Least Sensitive (10-1 cm3/s threshold)
Limitation - Human Ocular Resolution = ~40-
50 mm
Operator skill variability, fatigue, error, training
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Visual Inspection
Example of crease through a seal.
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Dye Penetration
Involves injecting dye into the package
Placing the weight of the solution against each
portion of the seal for a specific length of time
Examine package for evidence of seal failure
Examination by visual or microscopic
Demonstrated by dye slipping through the seal
Sensitivity dependent on the solution used
Alcohol, surfactants change the surface tension
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Dye Penetration
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Dye Penetration
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Bubble Emission
Involves inflating the package and
submerging it into a surfactant solution
Package examined for evidence of seal
failure or holes in packaging, demonstrated
by bubbles emerging through the seal
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Bubble Emission
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Bubble Emission
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Container Closure Integrity
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Container Closure
An integrity test for rigid containers, based on
concepts from ASTM D4991
Samples are exposed to methylene blue dye for a
specific time under vacuum.
Samples can be verified for the presence of the
dye in the sample matrix with either visual
inspection or UV/Vis
Ensure the dye is not inhibited by the matrix
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Pressure Decay
An inflation leak test in which a non-porous
package or product is pressurized to a preset level.
After the package has stabilized, the decay in
pressure over a preset test time is evaluated to
determine if a leak is present.
100
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Pressure/Vacuum Decay
chart
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Helium Tracer Gas
Two methods outlined in the ASTM method
Sniffer Mode
The package is scanned externally
Higher variability based on how the package is handled
Vacuum Mode
Package is filled with helium and sealed closed
Placed in a chamber and pressurized
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Helium Tracer Gas
Can apply to a variety of packages including:
Flexible
Semi-rigid
Rigid
Not a test for porous materials
Vacuum chamber is completely customizable
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Other options..
O2, ASTM F2714 Oxygen Headspace Analysis Using
Fluorescent Decay and ASTM New Standard Oxygen
Analysis of Packages Using Headspace Sampling
CO2, ASTM F2227 Nondestructive Detection of Leaks
in Trays by CO2 and ASTM F2228 Nondestructive
Detection of Leaks in Porous Packaging by CO2
Water Vapor
H2, ongoing research
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ASTM test methods
F1886 Test Method for Determining Integrity of
Seals for Medical Packaging
F1929 Test Method for Detecting Seal Leaks in
Porous Medical Packaging
D3078 Test Method for Determination of Leaks
in Flexible Packaging by Bubble Emission
F2095 Test Method for Pressure Decay Leak
Test for Flexible Packages With or Without
Restraining Plates
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ASTM test methods
F2096 Test Method for Detecting Gross Leaks
in Medical Packaging by Internal Pressurization
F2227
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Questions?
Wendy Mach,
Nelson Laboratories Inc.
801-290-7810