UL 181B:2017 pdf download.Closure Systems for Use With Flexible Air Ducts and Air Connectors.
8 TensIle Strength Test
8.1 The average tensile strength in the machine direction of each roll of tape shall be not less than 17 pounds per Inch (2.97 N/mm) of width, with no individual specimen having a value of less than 15 pounds per Inch (2.62 N/mm) of width, when tested in accordance with 8.3.
8.2 The average tensile strength in the cross machine direction of each roll of tape shall be not less than
8 pounds per inch (1.40 N/mm) of width, with no individual specimen having a value of less than 75
pounds per inch (1.31 N/mm) of width, when tested in accordance with 8.3.
8.3 The tensile strength of the tape is to be determined in accordance with the Standard Test Method for Breaking Strength and Elongation of Pressure-Sensitive Tape, ASTM D3759.
8.4 Three specimens from each of three separate rolls of tape shall be prepared with a Laboratory specimen cutter for both machine and cross directions,
9 Peel Adhesion Test at 180 Degree Angle
9.1 The average peel adhesion strength of the pressure-sensitive tape shall be not less than 30 ounces
per inch (0.33 N/mm) of width of tape with rio individual specimen having a value of less than 25 ounces
per inch (0.27 N/mm) applied to the specified stainless steel panel, and tested en accordance with 9.3 and
9.4.
9.2 The average peel adhesion strength of pressure sensitive tape shall be not less than 25 ounces per inch (0,27 N/mm) of width of tape with no individual specimen having a value of less than 20 ounces per inch (0.22 N/mm) applied to the tapes own backing and tested in accordance with 9.3 and 9.4,
9.3 The peel adhesion strength of the tape is to be determined in accordance with the Standard Test Method for Peel Adhesion of Pressure-Sensitive Tape, ASTM D3330, except as modified in 9.4. Tests are to be conducted in accordance with Method A - Single-Coated Tapes.
9.4 Three specimens from each of three separate rolls of tape are to be tested. Specimens are to be cut In 1 inch (25.4 mm) wide by 12 Inch (305 mm) long strips. The tape is to be applied to a stainless steel subslrate as specified in the Standard Test Method for Peel Adhesion of Pressure-Sensitive Tape, ASTM D3330. The tape is to be applied to its own backing using double-sided tape between the tape substrate and the supporting steel plate such that no bending is possible during the test. Alternative equivalent means of securing the tape substrate to the support is acceptable. The test load is to be applied immediately after completion of the rolling.
8.1 The average tensile strength in the machine direction of each roll of tape shall be not less than 17 pounds per Inch (2.97 N/mm) of width, with no individual specimen having a value of less than 15 pounds per Inch (2.62 N/mm) of width, when tested in accordance with 8.3.
8.2 The average tensile strength in the cross machine direction of each roll of tape shall be not less than
8 pounds per inch (1.40 N/mm) of width, with no individual specimen having a value of less than 75
pounds per inch (1.31 N/mm) of width, when tested in accordance with 8.3.
8.3 The tensile strength of the tape is to be determined in accordance with the Standard Test Method for Breaking Strength and Elongation of Pressure-Sensitive Tape, ASTM D3759.
8.4 Three specimens from each of three separate rolls of tape shall be prepared with a Laboratory specimen cutter for both machine and cross directions,
9 Peel Adhesion Test at 180 Degree Angle
9.1 The average peel adhesion strength of the pressure-sensitive tape shall be not less than 30 ounces
per inch (0.33 N/mm) of width of tape with rio individual specimen having a value of less than 25 ounces
per inch (0.27 N/mm) applied to the specified stainless steel panel, and tested en accordance with 9.3 and
9.4.
9.2 The average peel adhesion strength of pressure sensitive tape shall be not less than 25 ounces per inch (0,27 N/mm) of width of tape with no individual specimen having a value of less than 20 ounces per inch (0.22 N/mm) applied to the tapes own backing and tested in accordance with 9.3 and 9.4,
9.3 The peel adhesion strength of the tape is to be determined in accordance with the Standard Test Method for Peel Adhesion of Pressure-Sensitive Tape, ASTM D3330, except as modified in 9.4. Tests are to be conducted in accordance with Method A - Single-Coated Tapes.
9.4 Three specimens from each of three separate rolls of tape are to be tested. Specimens are to be cut In 1 inch (25.4 mm) wide by 12 Inch (305 mm) long strips. The tape is to be applied to a stainless steel subslrate as specified in the Standard Test Method for Peel Adhesion of Pressure-Sensitive Tape, ASTM D3330. The tape is to be applied to its own backing using double-sided tape between the tape substrate and the supporting steel plate such that no bending is possible during the test. Alternative equivalent means of securing the tape substrate to the support is acceptable. The test load is to be applied immediately after completion of the rolling.
