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.<\/p>\n
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| 3<\/td>\n | 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 <\/td>\n<\/tr>\n | ||||||
| 4<\/td>\n | Foreword <\/td>\n<\/tr>\n | ||||||
| 5<\/td>\n | Introduction 1 Scope 2 Normative references 3 Terms and definitions 3.1 snag 3.2 protrusion 3.3 filamentation 3.4 pulled thread <\/td>\n<\/tr>\n | ||||||
| 6<\/td>\n | 3.5 shiner 3.6 indentation 4 Principle 5 Apparatus <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | Figure 1 Test chamber <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | Figure 1 Test chamber (continued) 6 Preparation of test specimen tubes <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | Figure 2 Covering of test specimen tubes with felt <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 7 Pre-treatment of fabric 8 Conditioning of fabric 9 Preparation of test specimens <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 10 Procedure 11 Assessment 11.1 General <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 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 <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 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; <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 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. <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 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 <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | Annex B (informative) Recommendations for periodic cleaning, and for verification, of the test chamber B.1 Periodic cleaning B.2 Verification <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Textiles. Method for determination of the propensity of fabrics to snagging. Rotating chamber method<\/b><\/p>\n |