Information on the most widely used ASTM standards within the materials testing industry
Floating Roller Peel Test :
Floating Roller Peel Test conform with the ASTM D3167, Suitable for testing rigid or semi-rigid substrates as well as flexible materials, this method uses a roller typically set at 90° or 115°. The material passes through the roller and is attached to another fixture fixed on a tensile testing machine, which measures the force required to separate the adhesive.
| 1, What is the floating roller method? | |
| The floating roller method is a technique for determining the peel strength between rigid metals and flexible metals through a floating roller axis. Compared to other peel testing methods, the floating roller method can provide more stable and reliable data. This is because during the testing process, the surface of the flexible metal does not need to perfectly match the surface of the roller axis, thus reducing human operational errors and equipment requirements. | |
| 2, Testing Principle | |
| Under specified testing conditions, the testing principle measures the average force required per unit width, expressed in kN/m, to gradually separate two bonded metal adhesive specimen along the bonding line. | |
| 3, Testing related standards | |
ASTM D3167: Standard Test Method for Floating Roller Peel Resistance of Adhesives ISO 4578: Adhesives — Determination of peel resistance of high-strength adhesive bonds — Floating-roller method BS EN 1464: Adhesives - Determination of peel resistance of adhesive bonds - Floating roller method GB/T 7122-1996: Adhesives--Determination of peel resistance of high-strength adhesive bonds--Floating roller method GOST R 57832-2017: Polymer composites. Determination of peel resistance of high-strength adhesive bonds by Floating-roller method | |
| 4, Testing Machine and device | |
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| Single or dual columns universal testing machine (UnitedTest Brand, MTS, Instron, Zwick etc.,) | ASTM D3167 Floating Roller Peel Resistance Test fixtures. |
Note: The fixture supporting the sample is shown in Figure. The upper end of the fixture is connected to the grip of the testing machine. The diameter of the roller shaft on the peeling test fixture is 25 mm. Bearings should be used at both ends of the roller shaft, allowing it to rotate freely. | |
| 5, Test Procedure | |
Step 1:Sample Preparation Prepare the sample according to the dimensions shown in the figure. The sample can be prepared individually or cut from a test plate.
The test board and individual samples are bonded together using two pieces of properly surface-treated adherends. When using adhesives, the recommended methods should be followed to achieve the best bonding results and minimize deviations. The thickness of the flexible adherend is 0.5 mm ± 0.02 mm, and the thickness of the rigid adherend is 2.0 mm ± 0.1 mm. When cutting samples, minimize the impact of cutting heat and mechanical force on the test results. The preferred sample width is 25 mm or another width suitable for the testing device, which should be noted in the test report. | |
Setp 2, Sample numbers: 5 pcs | |
Step 3, Test Procedures Insert the specimen into the peeling fixture. Clamp the unbonded end of the flexible adherend into the lower jaws of the testing machine. The separation rate of the jaws is 100 mm/min ± 5 mm/min, unless otherwise specified. During the test, if the rigid adherend bends or deforms, the specimen must be redesigned to ensure it has sufficient stiffness for the peeling test. Automatically record the relationship curve between force and the distance moved by the testing machine's jaws (the relationship curve between force and peeling length). Excluding the initial peeled length of 25 mm, at least 115 mm must be peeled.If failure occurs outside the peeling area, the result will not be counted. | |
Step 4, Processing Test Results From the automatically recorded curve, calculate the average peeling force per unit width of the specimen within the effective peeling length of at least 115 mm (after excluding the initial peeled length of 25 mm and the last 20 mm). The result is expressed in kN/m. | |
Related Standard
ASTM D3167 Peel Resistance Adhesives Test - Floating Roller
ASTM D3167 Floating Roller Peeling test method covers the determination of the relative peel resistance of adhesive bonds between one rigid adherend and one flexible adherend when tested under specified conditions of preparation and testing.
ISO 11339 Adhesives — T-peel test for flexible-to-flexible bonded assemblies.
It specifies a T‑peel test for the determination of the peel resistance of an adhesive by measuring the peeling force of a T‑shaped bonded assembly of two flexible adherends. The ISO 11339 test method is suitable for self-adhesive tapes that are prepared under the relevant guidelines within this test standard. For a T-peel test for a flexible-to-flexible assembly, the force is applied to the unbonded ends of the specimen . The angle between the bond line and the direction of the applied force is not fixed.
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