: For long-term projects (like aerospace or infrastructure) that were spec'd decades ago and require the exact original testing parameters. Summary Table Full Title
The standard specifies a constant separation speed, which is critical because peel resistance can vary significantly at different rates.
You can download the PDF version of DIN 53357 from the DIN website or other standardization bodies.
Understanding DIN 53357: Testing of Plastic Films and Sheeting din 53357 pdf
Plastic coatings applied to non-plastic substrates like paper, foils, or textiles. Adhesive backing systems applied to carrier materials.
The machine peels the layers apart, usually at a , at a controlled speed.
Protective polymer laminates bonded to paper or synthetic substrates. : For long-term projects (like aerospace or infrastructure)
The testing process requires specific conditions. It uses standard tensile testing machines. Sample Preparation Cut samples into precise strips. Conditioning: Store samples at standard room temperature. Pre-separation: Peel back one end manually to start. Clamping: Fix the separated ends into the machine grips. Peeling: Pull the layers apart at a constant speed. Angle: Maintain a 90-degree or 180-degree peel angle. Measurement: Record the force required to continue peeling. Key Metrics Evaluated
This method was used for materials where a clean separation of the individual layers is possible, such as with films processed from rolls. The specimen for Method A has a length of 200 mm. The width varies depending on the material: composite sheets are tested with a width of 50 mm ± 1 mm, while multi-layer plastic films require a width of 15 mm ± 1 mm. This method forms the basis for modern replacement standards.
Test specimens are usually prepared in standardized widths (e.g., 15mm or 25mm) to ensure results are comparable. Understanding DIN 53357: Testing of Plastic Films and
Understanding DIN 53357: Adhesion Testing for Plastic Sheets
Many testing equipment manufacturers provide datasheets summarizing the test requirements, such as this Peel Fixture Datasheet from Morsetti Universali or Grip Engineering . DIN 53357 - 1982-10