Compliance work

Overall migration Sensory analysis

Material analysis

Mechanical properties

permeation

PPWR/ Recycling

Bond strength/peel force of laminates/multi-layer films/bondings (temperature range - 40 up to + 120 °C)

DIN 53357 A (historical)/ASTM F 904/DIN EN ISO 11339 peel test after separation of the laminated layers (accredited test method). In addition to determining the peel force to delaminate the laminate, we also evaluate and document the delamination characteristics resp. the delamination mechanism (peeling off of the printing ink?Remaining of the adhesive layer? Tearing of the film ? Transfer of ink to the opposite side of the material ? ...)

In short — AI-generated

This test measures the force required to separate the individual layers of a multi-layer film or laminate. Using a tensile testing machine, the layers are peeled apart at a constant speed, with the test performed across a temperature range from -40 °C to +120 °C to simulate various environmental conditions.

The resulting values indicate the bond strength, helping to ensure that packaging remains intact during processing and transport. Additionally, we analyze the delamination mechanism to determine if failures occur within the adhesive, the film material, or the printing ink, which is critical for optimizing material selection and quality control.

Text is AI-generated; based on test method data curated and verified by Innoform.

Test Method Group: Mechanical properties

Norms:
  • DIN 55543-5 (2017-10) Packaging Test – Test methods for packaging films – Part 5: Determination of adhesion strength
  • DIN EN ISO 11339 (2022-05) Adhesives – T-peel test for flexible-to-flexible bonded assemblies
  • ASTM F 904 (2016) Standard Test Method for Comparison of Bond Strength or Ply Adhesion of Similar Laminates Made from Flexible Materials
  • DIN 53357 (1982-10) Testing of plastic sheets and films - separation test of layers

Required Sample Amount: Sample over total width of material, minimum length: 0,5 m

Standard Tests

bond strength/ ply adhesion acc. DIN 55543-5 (hist DIN 53357 A) (standard test)

Specific Norm: DIN 55543-5

Bond Strength or Ply Adhesion of laminates made from flexible materials acc. to withdrawn DIN 53357- A (without roller). The average bond strength then is calculated on the basis of 10 evenly over the measuring distance spread measurement points. Note: It is known that the bednig stiffness acts on the result of the bond strength, so that a direct comparison of results found at different laminates, for example with different bending stiffness, can lead to misinterpretations.

bond strength/ ply adhesion acc. ASTM F 904

Specific Norm: ASTM F 904

Bond Strength or Ply Adhesion of laminates made from flexible materials acc. to ASTM- test parameters as averrage force. Note: It is known that the bednig stiffness acts on the result of the bond strength, so that a direct comparison of results found at different laminates, for example with different bending stiffness, can lead to misinterpretations.

peel strength acc. DIN EN ISO 11339 (T-Peel- Test)

Specific Norm: DIN EN ISO 11339

Application: metal-based flexible materials.
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