180 degree peel | Mecmesin

Both the 180-degree and 90-degree peel tests are typically used where a flexible material is bonded to a more rigid substrate. You would use the 180-degree test over the 90-degree test if your flexible substrate can easily be bent back to 180 degrees without damaging the specimen. The 180-degree peel test can either be supported or unsupported.

In a supported 180-degree peel test a flexible material is usually adhered to a known surface, such as a glass or polished stainless steel plate. The specimen is then bent back on itself over its length with enough material being separated to allow one end to be held in the upper vice grip. The glass or steel plate is secured in the lower vice grip. The crosshead of the test stand is then driven upwards at a constant speed to peel the flexible material away from the plate at the specified 180-degree angle.

In an unsupported 180-degree peel test the more rigid substrate is secured in the lower vice grip. The more flexible material is then bent back on itself over its length with enough material being separated to allow one end to be held in the upper vice grip. The crosshead of the test stand is then driven upwards at a constant speed to peel the flexible material away from the more rigid substrate at the specified 180-degree angle.

The 180-degree peel test tends to provide higher values than both T-peel and 90-degree peel tests.

Standards

Featured or equivalent test standards for Mecmesin solutions in this section

ASTM D3330

Standard Test Method for Peel Adhesion of Pressure-Sensitive Tape

ASTM D6862-11

Standard Test Method for 90 Degree Peel Resistance of Adhesives

BS EN 28510-1

Adhesives. Peel test for a flexible-bonded-to-rigid test specimen assembly. 90° peel

BS EN ISO 8510-2

Adhesives. Peel test for a flexible-bonded-to-rigid test specimen assembly. 180 degree peel

IEC 61730-2

Photovoltaic (PV) module safety qualification – Part 2: Requirements for testing

ISO 29862

Self adhesive tapes - Determination of peel adhesion properties

TLMI L-IA2

180° peel adhesion - release liner

Term Video

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