BS 8479:2008
$102.76
Textiles. Method for determination of the propensity of fabrics to snagging. Rotating chamber method
| Published By | Publication Date | Number of Pages |
| BSI | 2008 | 20 |
This British Standard gives a method for determining the propensity of fabrics to snagging, and related surface defects. The standard is applicable to knitted and to woven fabrics.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 3 | Contents Introduction 1 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Principle 2 5 Apparatus 2 6 Preparation of test specimen tubes 5 7 Pre-treatment of fabric 7 8 Conditioning of fabric 7 9 Preparation of test specimens 7 10 Procedure 8 11 Assessment 8 12 Test report 10 Annexes Annex A (informative) Example of the location of test specimens on a length of fabric supplied for test 12 Annex B (informative) Recommendations for periodic cleaning, and for verification, of the test chamber 13 Bibliography 14 List of figures Figure 1 – Test chamber 4 Figure 2 – Covering of test specimen tubes with felt 6 Figure A.1 – Example of the location of test specimens 12 List of tables Table 1 – Grading system 9 Table 2 – Classification system for surface defects 9 |
| 4 | Foreword |
| 5 | Introduction 1 Scope 2 Normative references 3 Terms and definitions 3.1 snag 3.2 protrusion 3.3 filamentation 3.4 pulled thread |
| 6 | 3.5 shiner 3.6 indentation 4 Principle 5 Apparatus |
| 8 | Figure 1 Test chamber |
| 9 | Figure 1 Test chamber (continued) 6 Preparation of test specimen tubes |
| 10 | Figure 2 Covering of test specimen tubes with felt |
| 11 | 7 Pre-treatment of fabric 8 Conditioning of fabric 9 Preparation of test specimens |
| 12 | 10 Procedure 11 Assessment 11.1 General |
| 13 | 11.2 Procedure for grading and classifying test specimens for snagging and other surface defects Table 1 Grading system Table 2 Classification system for surface defects |
| 14 | 11.3 Procedure for assessment of the lengths and numbers of snags a) u2 mm: short; b) >2 mm u5 mm: medium; c) >5 mm: long. a) u2 mm (short): 2 b) >2 mm u5 mm (medium): 5 c) >5 mm (long): 2 a) u2 mm (short): >10 b) >2 mm u5 mm (medium): >10 c) >5 mm (long): u10 12 Test report a) the number and date of this British Standard; b) details of any washing or cleaning to which the fabric was subjected prior to testing (see Clause 7); c) the grade of each test specimen, in accordance with Table 1 and the classification, for each test specimen, of any surface defects, in accordance with Table 2; d) the mean grade for the four test specimens; |
| 15 | e) for test specimens with defects classified as Type G, a description of the appearance of the defects; f) if grading photographs are used (see Note to 11.2) full details of the grading photographs, the individual grade of each test specimen and the mean grade; g) if the test specimen has snags, the number of snags in each length category; h) details of any deviations from the method given in this standard. |
| 16 | Annex A (informative) Example of the location of test specimens on a length of fabric supplied for test Figure A.1 Example of the location of test specimens |
| 17 | Annex B (informative) Recommendations for periodic cleaning, and for verification, of the test chamber B.1 Periodic cleaning B.2 Verification |
| 18 | Bibliography |
