1、BRITISH STANDARD BS4134:1990 Method for Designation of ticket numbers of industrial sewing threadsBS4134:1990 This British Standard, having been prepared under the directionof the Textiles and Clothing Standards Policy Committee, was published underthe authority of the BoardofBSI and comes intoeffec
2、ton 31 August1990 BSI10-1999 First published February1967 Second edition February1983 Third edition August1990 The following BSI references relate to the work on this standard: Committee referenceTCM/28 Draft for comment89/41163DC ISBN 0 580 18924 4 Committees responsible for this British Standard T
3、he preparation of this British Standard was entrusted by the Textiles and Clothing Standards Policy Committee (TCM/-) to Technical Committee TCM/28, upon which the following bodies were represented: British Association of Clothing Machinery Manufacturers British Clothing Industry Association British
4、 Polyolefin Textiles Association Consumer Policy Committee of BSI Flax and Linen Association (GB) Furniture Industry Research Association Linen Sewing Thread Manufacturers Association Man-made Fibres Producers Committee Ministry of Defence SATRA Footwear Technology Centre Textile Institute Textile R
5、esearch Council Amendments issued since publication Amd. No. Date CommentsBS4134:1990 BSI 10-1999 i Contents Page Committees responsible Inside front cover Foreword ii 1 Scope 1 2 Definitions 1 3 Principle 1 4 Designation of ticket number 1 5 Conversion factors 1 6 Formula for deriving3-ply metric c
6、ount equivalents 1 7 Formula for deriving3-ply cotton count equivalents 1 Publications referred to Inside back coverBS4134:1990 ii BSI 10-1999 Foreword This British Standard has been prepared under the direction of the Textiles and Clothing Standards Policy Committee and supersedes BS4134:1983 which
7、 is withdrawn. The principal changes introduced in this revision are that the standard has been revised as a method of designation, the definitions have been deleted and the tables of ticket numbers deleted. When introducing new threads, it is recommended that manufacturers adopt ticket numbers in a
8、ccordance with this standard. Some existing sewing threads have ticket numbers that currently enjoy commercial recognition but are not in line with this British Standard. These arise because of changes in the designation of the linear density of available yarns since the first publication of this st
9、andard in1967. Attention is also drawn to BS947, which gives information relating to the Tex System and other traditional systems for designating linear density of yarns, and to BS4985, which provides a conversion table to rounded values in the Tex System. A British Standard does not purport to incl
10、ude all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages
11、i andii, pages1 and 2, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.BS4134:1990 BSI 10-1999 1 1 Scope This British Standard describes a meth
12、od for designation of ticket numbering of industrial sewing threads. It covers sewing threads made wholly or in part from man-made fibres and sewing threads made from cotton. Formulae for deriving3-ply metric and3-ply cotton equivalents, on which the BS ticket numbers are based, are given. NOTEThe t
13、itles of the publications referred to in this standard are listed on the inside back cover. 2 Definitions For the purposes of this British Standard the definitions given in BS6157 apply. 3 Principle The BS ticket numbers of sewing threads are designated from the total nominal input linear density of
14、 all the component yarns expressed as3-ply equivalents. 4 Designation of ticket number 4.1 Designation The ticket number shall be designated from the total nominal input decitex value regardless of thread construction(1-ply,2-ply,3-ply, etc.) converted to the3-ply relevant equivalent as described in
15、 clause6. It shall be rounded as specified in4.2 and4.3. 4.2 Man-made fibre threads Man-made fibre threads shall be rounded as follows: a) for ticket numbers finer than160, round down to the nearest multiple of20; b) for ticket numbers80 to160, round down to the nearest multiple of10; c) for ticket
16、numbers30 to75, round down to the nearest multiple of five; d) for ticket numbers18 to28, round down to the nearest even number; e) for ticket numbers17 and coarser, round down to the nearest whole number. 4.3 Cotton threads Cotton threads shall be rounded as follows: a) for ticket numbers finer tha
17、n90, round off to the nearest multiple of20; b) for ticket numbers40 to90, round off to the nearest multiple of10; c) for ticket numbers coarser than40, round off to the nearest even number. 5 Conversion factors 5.1 Metric count from decitex for man-made threads For man-made threads, the metric coun
18、t is given by the following: metric count (in Nm)= 5.2 Cotton count from decitex For cotton threads, the cotton count is given by the following: cotton count (in Ne C )= 6 Formula for deriving3-ply metric count equivalents 6.1 Formula For man-made sewing threads calculate an approximation of the3-pl
19、y metric equivalent from the following: 3-ply metric equivalent= metric count (in Nm) 3 Therefore 3-ply metric equivalent= 6.2 Sample calculation The following is an example of how to calculate the BS ticket number for a3-ply thread: 7 Formula for deriving3-ply cotton count equivalents 7.1 Formula F
20、or cotton sewing threads, calculate an approximation of the3-ply cotton count equivalent from the following: 3-ply cotton count equivalent= cotton count (in Ne C ) 3 total input (in dtex) = 235dtex 3 (ply) 3-ply metric equivalent = = 42.55 and BS ticket number = 40(42.55 rounded down to nearest5) 10
21、 000 total nominal input linear density (in dtex) - 5905 total nominal input linear density (in dtex) - 30 000 total nominal input linear density (in dtex) - 30 000 2353 -BS4134:1990 2 BSI 10-1999 Therefore 3-ply cotton count equivalent= 7.2 Sample calculation The following is an example of how to c
22、alculate the BS ticket number for a3-ply thread: total input (in dtex) = 100dtex 3 (ply) 3-ply cotton equivalent = = 59.05 and BS ticket number = 60(59.05 rounded off to nearest10) 17 715 total nominal input linear density (in dtex) - 17 715 1003 -BS4134:1990 BSI 10-1999 Publications referred to BS9
23、47, Specification for a universal system for designating linear density of textiles (Tex System) 1) . BS4985, Conversion table for replacing traditional yarn numbers by rounded values in the Tex System 1) . BS6157, Specification for industrial sewing threads made wholly or partly from synthetic fibr
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