Floating roller peel test

The floating roller peel test is used when one adherend is flexible and the other is rigid. The flexible member is peeled through a spool arrangement to maintain a constant angle... 

A T-peel test is shown in Fig. 27.2. The specimen is usually 1 in. (2.54 cm) wide and is described in Standard Test Method ASTM D1876 [6]. This specimen is symmetrical (both adherends are the same thickness). Other peel test specimens are not symmetrical, such as the floating roller peel test [7] or the climbing drum peel test [8]. The test measures the fracture resistance of an adhesive under conditions in which the adherends may plastically deform. In the tables presented later, the peel strength is given in Newtons per centimeter of width (N/cm) and in tmits of pounds per inch width (piw). The latter is shown in parenthesis. In some cases, the peel strength is derived from climbing drum peel measurements in which the results are presented in torque, in. Ib/in. For pressure sensitive adhe-... 

An alternative to the climbing drum peel test is the floating roller peel test, described in ASTM D3167-76. Direct comparisons cannot be made between the two tests because the floating roller test induces a more severe peel angle than the climbing drum. 

Samples for the floating roller peel test can be a bonded honeycomb type or any adhesive assembly consisting of a rigid adherend and a relatively flexible adherend. Test specimens are typically aluminum with the flexible adherend being 0.025 inch thick and the rigid adherend at 0.064 inch thickness (see Figure 16). Samples are tested in a tensile machine at a crosshead speed of 6 inches/min for three inches of peel distance. Peel strengths are reported in pounds per inch of peel width. 

DIN 53289 Testing of adhesives for metals and adhesively bonded metal joints floating roller peel test. 

Fig. 15. Floating roller peel test head and specimen (D-3167).

Floating Roller and BS 5577 Peel Fig. 49 shows a typical peeling rig for the floating roller peel test. The differences between this test and the BS 5577 specification are the peeling angle, which is about 70° for the floating roller or Bell peel test and 90° for the BS 5577 test, and the aluminium alloy used BS 5577 uses a much softer alloy. 

Figure 49 Schematic of the floating roller peel test.

Clearly, while comparative measurements can be made using the above types of peel test, the results obtained will depend upon such factors as the mechanical properties of the peel arms, their thickness, and also upon such factors as the applied peel angle, and the effective local peel angle at the peel front. Also, in a study to evaluate these different types of peel test, Kawashita and coworkers (2005) demonstrated that in tests such as the floating roller peel test, frequently the peel arm does not conform to the roller geometry. This was identified using a modified and partially cutaway apparatus, which allowed the conformation to be evaluated. 

Floating roller and BS 5577 peel Fig. 13.39 shows a typical peeling rig for the floating roller peel test. The differences between this test and... 

D 3167 Test Method for Floating Roller Peel Resistance of Adhesives... 

ASTM D3167-03a Standard test method for floating roller peel resistance. 

Evaluating Peel Strength of Shoe Sole Attaching Adhesives, Test for (D 2558) Determining Durahiliiy of Adhesive Joints Stressed in Peel, Practice for (D 2918) Floating Roller Peel Resistance, Tbst for (D 3167)... 

To test peel adhesion to glass as a rigid substrate, one could use the 180° peel (D-0903), climbing drum peel (D-1781) or floating roller peel (D-3167) tests. 

Figure 34 90° peel test also called floating roller peel (a) panel prior to bonding (cut into 25 mm strips after bonding) (b) peel test apparatus (all dimensions in mm). 

Peel ( ) Peel strength for stated test sample configuration, e.g. T peel, floating roller, bell, sandwich, etc. Units vary for different test pieces. 

Other repair adhesive with similar uses FM235-M (0.4kg/m ). X (wet) 7 days. 70°C 8%RH,RT test. Peel - Floating Roller. ... 

NF 776-126 1987 Adhesives for flexible floor coverings. Peel resistance test at an angle of 90 degrees. (Floating Roller method). 

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