This Standard describes two methods for determining the tensile properties of plastic films (less than 1.0 mm in thickness).
1.1 Two types of tension test are described in these methods, differing basically only in manner of load application. These methods may be used to test all plastics within the thickness range described and the capacity of the machine employed.
1.1.1 Method A. Static Weighing -Constant Rate-of-grip Separation Test.
This method employs a constant rate of separation of the grips holding the ends of the test specimen.
1.1.2 Method B. Pendulum Weighing - Constant Rate-of-power-grip. Motion Test
This method employs a constant rate of motion of one grip and a variable rate of motion of the second grip. The variable-rate grip is attached to a pendulum weighing head, and its movement is dependent on the load-deformation behaviour of the material under test.
1.2 Specimen extensions may be measured in these methods by grip separation, extension indicators, or displacement of gauge marks.
1.3 A procedure for determining the tensile modulus of elasticity is included, using Method A at one strain rate.
SS 323 Pt.C1-1987 history
1987SS 323 Pt.C1-1987 Methods Of Test For Flexible Plastic Packaging Materials Part C1 : Determination Of Tensile Properties