SIST EN ISO 11640:2000

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Usnje - Preskušanje obstojnosti barve - Obstojnost barve proti drgnjenju v dveh nasprotnih smereh (ISO 11640:1993)Leder - Farbechtheitsprüfungen - Bestimmung der Reibechtheit von Färbungen (ISO 11640:1993)Cuir - Essais de solidité des teintures - Solidité des teintures au frottement va-et-vient (ISO 11640:1993)Leather - Tests for colour fastness - Colour fastness to cycles of to-and-fro rubbing (ISO 11640:1993)59.140.30Usnje in krznoLeather and fursICS:Ta slovenski standard je istoveten z:EN ISO 11640:1998SIST EN ISO 11640:2000en01-februar-2000SIST EN ISO 11640:2000SLOVENSKI
STANDARD



SIST EN ISO 11640:2000



SIST EN ISO 11640:2000



SIST EN ISO 11640:2000



SIST EN ISO 11640:2000



SIST EN ISO 11640:2000



INTERNATIONAL STANDARD ISO 11640 IULTCSMJF 450 First edition 1993-12-15 Leather - Tests for colour fastness - Colour fastness to cycles of to-and-fro rubbing Cuir - Essais de solid&? des teintures - Solidit6 des teintures au frotfement va-et-vient Reference number ISO 11640:1993 (E) IULTCS/IUF 450, 1993 Edition SIST EN ISO 11640:2000



ISO 11640:1993(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national Standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Esch member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmentaI, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard ISO 11640 was prepared by the Fastness Tests Commission of the International Union of Leather Technologists and Chemists Societies (IUF Commission, IULTCS). lt is based on IUF 450 published in J. Sec. Leather Tech. Chem., 71, pp. 24-25 (1987) and de- clared an official method of the IULTCS in October 1989. Annexes A and B of this International Standard are for information only. 0 ISO 1993 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronie or mechanical, including photocopying and microfilm, without Permission in writing from the publisher. International Organization for Standardization Case Postale 56 l CH-l 211 Geneve 20 l Switzerland Printed in Switzerland ii SIST EN ISO 11640:2000



INTERNATIONAL STANDARD 0 ISO ISO 11640:1993(E) Leather - Tests for colour fastness - Colour fastness to cycles of to-and-fro rubbing 1 Scope This International Standard specifies a method for determining the behaviour of the surface of a leather on rubbing with felt. NOTE 1 During the test, the felt may become coloured to a certain extent through transfer of coloured matter, e.g. finish, Pigment, dyestuff or buffing dust, and the colour and surface of the leather may become altered. 2 Normative references The following Standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publi- cation, the editions indicated were valid. All Standards are subject to revision, and Parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most re- cent editions of the Standards indicated below. Members of IEC and ISO maintain registers of cur- rently valid International Standards. ISO 105-A02:1993, Textiles - Tests for coiour fast- ness - Part AO? Grey scale for assessing Change in colour. ISO 105-A03:1993, Textiles - Tests for colour fast- ness - Part A03: Grey scale for assessing staining. ISO 2419:1972, Leather - Conditioning of test pieces for physical tests. ISO 3696: 1987, Wa ter for analytical labora tory use - Specifica tion and test methods. ISO 9073-2:1989, Textiles - Test methods for non- wovens - Part 2: Determination of thickness. ISO 11641 :1993, Leather - Tests for colour fastness - Colour fastness to perspiration. 3 Principle One side of the leather to be tested is rubbed with pieces of reference wool felt under a given pressure for a given number of forward and backward motions. The Change in colour of the pieces of feit and of the leather are assessed with the grey scales. Any other visible Change in or darnage to the surface of the leather is also reported. 4 Apparatus and materials 4.1 Rub fastness test apparatusl), incorporating the elements specified in 4.1 .l to 4.1.3 and optionally including those described in 4.1.4. 4.1.1 A carriage with: a) a horizontal, completely planar metal platform; b) a holder for fastening the leather to the platform, leaving 80 mm exposed; c) a device with which the leather may be extended at least 20 % linearly in the direction of rubbing. 1) An example of a suitable apparatus available commercially is given in annex A. 1 SIST EN ISO 11640:2000



ISO 11640:1993(E) 0 ISO 4.12 A finger, 500 g + 25 g in mass, removable, yet able to be fixed firmly in place, with: a) a base measuring 15 mm x 15 mm; b) a device for attaching pieces of wool felt (see 4.2) to the base; c) a weightpiece of mass 500 g + 10 g to load the finger up to a total mass of 1 kg; d) means of lowering the finger with the base flat on to the test specimen. 4.1.3 Means for driving the carriage to and fro with a distance of travel of 35 mm to 40 mm at a frequency of 40 cycles/min + 2 cycles/min for the - complete forward and backward motion. 4.1.4 Convenient, but not follows: essential, elements as a) means of adjusting the Position of the finger at right angles to the direction of rubbing, so that two or three positions may be used for rubbing on one piece of leather; b) a motor to drive the carriage forward and back- ward (see 4.1.3); c) means for preselecting a given number of cycles. 4.2 Rubbing material*), Square pieces of white or black wool felt, measuring 15 mm x 15 mm, punched out of a sheet of pure wool felt meeting the following specification: - pH of an extract made by shaking 5 g of ground felt with 200 ml of demineralized water (4.5) for 2 h in a polyethylene bottle: between 5,5 and 7 . t - mass per unit area: 1 750 g/m* & 100 g/m*; - thickness, determined in accordance with ISO 9073-2: 5,5 mm + 0,5 mm. - The black felt shall be dyed with Acid Black 24 (Cl 26370). 4.3 Vacuum-desiccator vessel, or other glass con- tainer suitable for
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