ISO 11857 pdf download

ISO 11857 pdf download.Textile floor coverings — Determination of resistance to delamination 1 Scope This International Standard describes a method for the determination of the force required to separate the plies of textile floor coverings. It is applicable to all types of textile floor coverings with a secondary or foam backing. The results obtained by this method are useful as a control of production but cannot be considered to be a reliable indication of in-use performance. 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 IEC and ISO maintain registers of currently valid International Standards. ISO 1 39, Textiles — Standard atmospheres for conditioning and testing. ISO 1 957, Machine-made textile floor coverings — Sampling and cutting specimens for physical tests. 3 Definition For the purpose of this International Standard the following definition applies. 3.1 delamination force the force required to separate the component layers of a textile floor covering, measured over a width of 50 mm and expressed in newtons 4 Principle The end of a test specimen is delaminated by hand and the force to continue delamination is measured on an autographic tensile strength tester under specified conditions. 5 Apparatus 5.1 Tensile testing machine, capable of being operated at a constant rate of extension (CRE) of 300 mm/min ± 1 0 mm/min. 5.2 Clamping system, having serrated or padded jaw faces with a minimum area of 25 mm 3 75 mm designed to prevent slippage in the clamps during testing 5.3 Autographic load-extension recorder, with or without computer back-up, operating at the same speed as the tensile testing machine, or computer with suitable software and output. 5.4 Self-adhesive textile floor covering tape, 50 mm wide. 6 Test specimens 6.1 Cut out five specimens in each direction, each 50 mm wide and 200 mm long, sampled in accordance with ISO 1 957, with the long side in the direction to be tested. For foam backed products, apply a strip of 50 mm adhesive tape (5.4) to the foam backing...