ISO 17504 pdf download

ISO 17504 pdf download.Textile floor coverings — Determination of wool fibre integrity using an abrasion machine 1 Scope This International Standard specifies a method for the determination of fibre damage in the pile of textile floor coverings having a pile material of at least 80 % wool. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 139, Textiles — Standard atmospheres for conditioning and testing. ISO 1957, Machine-made textile floor coverings — Sampling and cutting specimens for physical tests. 3 Principle Circular test specimens are abraded against a specified fabric for a set number of revolutions and the mass loss determined. The abradant is mounted in a large head and the test specimen to be abraded is mounted in a smaller head. The heads are offset from each other and rotated at the same speed. This method gives a constant relative velocity over the surface of the test specimen and thus relatively even wear. 4 Apparatus 4.1 Carpet abrasion machine 1 ) , consisting of a circular specimen holder rotating at approximately the same speed and in the same direction as the circular abradant but with the axes of rotation offset and having the following characteristics.- Rotational speed of specimen holder and abradant holder: 2,6 s 21 6 0,05 s 21 (1 56 rpm 6 3 rpm); – Size of aperture of specimen holder: 800 mm 2 6 1 0 mm 2 ; – Size of aperture of abradant holder: 1 0 560 mm 2 6 20 mm 2 ; – Distance between axes of specimen holder and abradant: 25,4 mm 6 0,2 mm;4.3 Standard felt backing, of wool felt of mass 750 gm 2 6 50 gm 2 and with a thickness of 2,5 mm 6 0,3 mm. 3) 4.4 Weighing balance, capable of measuring loads in the region of 350 g with an accuracy of 6 1 0 mg. 4.5 Soft bristle brush, for removal of loosened...