ADHESION
TEST
P R E S E N T E D B Y:
•
RASMITHA R
•
SHRIHARI A
•
S I VA R A N J I N I T
PEEL ADHESION TEST:
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Peel adhesion test is a method to measure the strength of an
adhesive bond between two materials.
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This test is also known as “peel test” or “peel strength test” and it is
used to determine the force required to separate two bonded
surfaces.
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The test measures the maximum force required to separate a material
from a substrate at a specific angle and rate.
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It is performed in Universal Testing machine.
UNIVERSAL TESTING MACHINE
METHODS OF PEEL ADHESION TEST:
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180-degree Peel Test: This method measures the force required to
separate two materials that are bonded together, by peeling them
apart at a 180-degree angle. It is the most commonly used method
and is suitable for most adhesives.
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90-degree Peel Test: This method measures the force required to
separate two materials that are bonded together by pulling them apart
at a 90-degree angle. This method is suitable for materials that have a
low peel strength or are brittle.
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T-Peel Test: This method measures the force required to separate
two materials that are bonded together, by pulling them apart at a 180degree angle in a T-shape. This method is suitable for materials that
have a low peel strength or are brittle.
•
Rolling Peel Test: This method measures the force required to separate
two materials that are bonded together by rolling them apart. This method is
suitable for materials that have a low peel strength or are brittle.
PUPOSE:
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To evaluate the bond strength of adhesives materials
To determine the suitability of an adhesive for a specific application
To compare the performance of different adhesives
To monitor the quality control of adhesive bonds in the manufacturing process
STANDARDS
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The ASTM International (formerly
known as the American Society for
Testing and Materials) has various
standards for adhesion testing based on
the materials being bonded.
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ASTM D3359 is a common standard.
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It provides guidance on methods for
assessing the adhesion of coating films
to metallic substrates.
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ASTM D4541, which covers the pull-off
strength of coatings using portable
adhesion testers.
RANGE OF
VALUES
Paper and
Cardboard:
Plastic Films:
• Tensile or peel strength: 1 to 5 N/cm
• Bond strength for glued joints: 2 to 10 N/cm
• Tensile or peel strength: 5 to 20 N/cm
• Bond strength for heat-sealed joints: 10 to 30
N/cm
Metalized Films:
• Adhesion strength: 15 to 40 N/cm
• Peel strength: 5 to 15 N/cm
Aluminium Foil:
• Tensile or peel strength: 20 to 60 N/cm
• Bond strength for adhesive joints: 15 to 40 N/cm
Flexible Packaging
Laminates:
• Peel strength: 10 to 40 N/cm
• Tensile strength: 15 to 50 N/cm
APPLICATIONS
Quality Assurance
Material Selection
Seal Integrity
Printed Packaging
Tamper Evidence
Barrier Properties
Transportation and Handling
Compliance with Standards
THANKYOU!