ISO 1763-2020 pdf free.Textile floor coverings — Determination of number of tuftsand/or loops per unit length and perunit area.
This document specifies a method for the determination of the number of tufts and/or loops per unitlength and per unit area of a textile floor covering.It is applicable to textile floor coverings with the pileof which consists of tufts and/or loops.
The following documents are referred to in the text in such a way that some or all of their contentconstitutes requirements of this document. For dated references,only the edition cited applies. Forundated references, the latest edition of the referenced document (including any amendments) applies.ISO 1957,Machine-made textile floor coverings —Selection and cutting of specimens for physical testsISO 2424,Textile floor coverings — Vocabulary.
For the purposes of this document, the terms and definitions given in ISO 2424 and the following apply.
number of tufts and/or loops per unit length
count of tufts and/or loops occupying 100 mm when counted longitudinally i.e. parallel to the selvedge(denoted by S), and when counted transversely, i.e.at right angles to the selvedge (denoted by G)
Note 1 to entry: S and G refer respectively to the stitch rate and gauge typically used for tufted carpets. Woventextile floor coverings are included in the scope of this document. Typically, other terms are used for S and G thatare different from those used in this document, e.g.beat-up (S) and pitch (G).
The number of complete tufts and/or loops is counted over a distance L which is at least 100 mmand contains at least 41 complete tufts and/or loops. The number of tufts and/or loops is counted indirections parallel to and at right angles to the selvedge, and the number per unit area calculated.
Ruler, graduated in millimetres.Conditioning of test specimens:Lay the specimens out flat, singly and with the use surface uppermost in an atmosphere having atemperature of(20±2)°Cand a relative humidity of (65±4)%, for at least 24 h.Measure the specimensin the same atmosphere.ISO 1763 pdf download.