本文件规定了在折叠条件下测定橡胶或塑料涂层织物抗弯曲性的试验方法。本试验方法仅适用于可夹持在所用试验装置中的产品，以及可使试样中的褶皱在试验过程中沿试样前后移动的产品。 弯曲次数（见3.1）或规定次数的弯曲循环完成后，试样的外观被视为折叠条件下弯曲阻力的测量值。

This document specifies a test method for determining the flex resistance of rubber- or plastics？coated fabrics in the folded condition. The test method is applicable only to products which can be clamped in the test apparatus used and to products with which the fold made in the test specimen can be caused to move back and forth along the specimen during the test. The appearance of the test specimen, after completion of either the flex number (see 3.1) or a specified number of flex cycles, is taken as a measure of the flex resistance in the folded condition.