ISO 1421:2016规定了两种测定涂有橡胶或塑料的织物拉伸强度的方法。 -方法1？条带试验法，这是一种测定抗拉强度和断裂伸长率的方法。 -方法2？抓斗试验方法，仅用于测定抗拉强度。 这些方法适用于与特定标准大气平衡的试样和湿试样。这两种方法都需要使用恒拉伸速率（CRE）拉伸试验机。

ISO 1421:2016 specifies two methods for the determination of the tensile strength of fabrics coated with rubber or plastics. - Method 1?the strip test method, which is a method for the determination of tensile strength and elongation at break. - Method 2?the grab test method, which is a method for the determination of tensile strength only. The methods apply to test pieces in equilibrium with specific standard atmospheres for testing and to wet test pieces. Both methods require the use of a constant rate of extension (CRE) tensile-testing machine.