Building hardware - Gasket and weatherstripping for doors, windows, shutters and curtain walling - Part 4: Recovery after accelerated ageing test method
建筑五金 - 门 窗 百叶窗和幕墙的垫片和密封条 - 第4部分:加速老化后的恢复试验方法
This part 4 of prEN 33/WI131/247 specifies the method to be used to select, condition and test standard extruded samples of typical raw materials, to determine the percentage of long term recovery after being deflected through its working deflection range under the conditions layed down in the test. The test has been devised to cover all likely raw materials.