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1、BRITISH STANDARD AEROSPACE SERIES BS 6F 37:1990 (Superseding BS 5F 37:1981) Specification for 570 g/m2 and 640 g/m2 cotton canvas fabrics for aerospace purposes Licensed Copy: sheffieldun sheffieldun, na, Wed Dec 06 12:28:54 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6F 37:1990 This British Stand
2、ard, having been prepared under the direction of the Aerospace Standards Policy Committee (ACE/-), was published under the authority of the Board of BSI and comes into effect on 31 October 1990 BSI 02-2000 The following BSI references relate to the work on this standard: Committee reference ACE/54 D
3、raft for comment 88/74833 DC ISBN 0 580 17804 8 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Aerospace Standards Policy Committee (ACE/-) to Technical Committee ACE/54, upon which the following bodies were represented: British Fabric
4、Association British Rubber Manufacturers Association British Textile Employers Association Man-made Fibres Producers Committee Ministry of Defence Society of British Aerospace Companies Limited Society of Dyers and Colourists Amendments issued since publication Amd. No.Date of issueComments Licensed
5、 Copy: sheffieldun sheffieldun, na, Wed Dec 06 12:28:54 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6F 37:1990 BSI 02-2000i Contents Page Committees responsibleInside front cover Forewordii 1Scope1 2General requirements1 3Yarn type1 4Manufacture1 5Finish1 6Construction and properties of finished f
6、abric2 7Identification2 Appendix A Information to be supplied by the purchaser3 Table 1 General requirements1 Table 2 Properties of the yarn1 Table 3 Properties of the loom state fabrics1 Publications referred toInside back cover Licensed Copy: sheffieldun sheffieldun, na, Wed Dec 06 12:28:54 GMT+00
7、:00 2006, Uncontrolled Copy, (c) BSI BS 6F 37:1990 ii BSI 02-2000 Foreword This British Standard, prepared under the direction of the Aerospace Standards Policy Committee, is one of a series for textiles of a quality suitable for aerospace purposes and is a revision of BS 5F 37, which is withdrawn.
8、It differs from the previous edition primarily in that provision for the supply of fabrics treated with mineral khaki has been deleted. Quality requirements as defined in the latest edition of BS F 100 are also included, as are details of information to be supplied by the purchaser. WARNING NOTES 1)
9、 This standard calls for the use of substances and/or test procedures that may be injurious to health if adequate precautions are not taken. It refers only to technical suitability and in no way absolves either the supplier or the user from statutory obligations relating to health and safety at any
10、stage of manufacture or use. 2) This standard specifies pentachlorophenyl laurate (PCPL) as the only approved rot-proofing treatment for aerospace fabrics. Alternative treatments are under development, and this standard will be updated to delete PCPL as soon as an approved alternative treatment for
11、aerospace fabrics is available. A British Standard does not purport to include 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 o
12、f pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 4, 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 c
13、over. Licensed Copy: sheffieldun sheffieldun, na, Wed Dec 06 12:28:54 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6F 37:1990 BSI 02-20001 1 Scope This British Standard specifies the requirements for cotton canvas fabrics of nominal loomstate mass 570 g/m2 and 640 g/m2 for aerospace purposes, prima
14、rily for heavy duty parachute packs. NOTE 1The information to be supplied by the purchaser in the contract or order is listed in Appendix A. NOTE 2The publications referred to in this standard are listed on the inside back cover. NOTE 3The latest revision of an Aerospace Series Standard is indicated
15、 by a prefix number. 2 General requirements 2.1 In addition to the requirements specified in clauses 2 to 7, the following sections and clauses of the latest edition of BS F 100 shall apply (see Table 1). 2.2 Fabrics treated with pentachlorophenyl laurate (PCPL), shall meet the requirements of BS 20
16、87-1 freedom from impurities clause. 3 Yarn type 3.1 The fabrics shall be manufactured from unsized cotton yarn free from trash and seed coat. 3.2 The yarn shall comply with the requirements given in Table 2. 4 Manufacture 4.1 The weave shall be plain. 4.2 The fabric shall be supplied either: a) wit
17、hout identification markers; or b) where requested by the purchaser (see Appendix A), marked with a coloured thread woven into the fabric 3 cm from each selvedge. For fabric 429 the thread shall be blue and for fabric 37 the thread shall be red. Table 1 General requirements (given in BS F 100) 4.3 T
18、he loomstate properties of the fabrics shall comply with the requirements given in Table 3. 5 Finish 5.1 General The fabrics shall be supplied scoured and either: a) undyed and rot-proofed (see 5.4); or b) dyed (see 5.3) and rot-proofed (see 5.4); or c) dyed (see 5.3), rot-proofed (see 5.4) and rend
19、ered water repellent (see 5.5). 5.2 Undyed fabrics Undyed fabrics shall not be bleached or given a whitening treatment. Table 2 Properties of the yarn Table 3 Properties of the loom state fabrics SectionTitleRequirements and tests 1GeneralAll requirements 2Quality requirements Requirements for the m
20、anufacture of wide fabrics Requirements for dyed textiles Requirements for dimensions and tolerances: general and wide fabrics Requirements for freedom from defects 3Physical tests Test for the determination of mass of wide fabric Tests for breaking strength and extension under load of wide fabrics
21、Test for water repellency Fabric designation Yarn linear density PliesFolding twistTwist direction WarpWeftWarpWeftWarpWeft 429 37 dtex 500 500 dtex 500 500 3 4 4 4 turns/m 355 240 turns/m 240 240 S S Fabric designation Minimum number of threads per centimetrea Mass per unit area Minimum average bre
22、aking strength WarpWeftWarpWeft 429 37 17.3 15.7 11.4 11.8 g/m2 570 20 640 20 N/50 mm 1 600 1 800 N/50 mm 1 600 1 800 a Calculated from the number of threads in a measured length of not less than 2 cm. Licensed Copy: sheffieldun sheffieldun, na, Wed Dec 06 12:28:54 GMT+00:00 2006, Uncontrolled Copy,
23、 (c) BSI BS 6F 37:1990 2 BSI 02-2000 5.3 Dyeing Where dyeing is required, the colour shall be specified either by reference to a British Standard, e.g. BS 381C, or otherwise by pattern. NOTEThe requirement for dyed fabric and the colour should be stated in the contract or order (see Appendix A). 5.4
24、 Rot-proofing The fabrics shall be treated with pentachlorophenyl laurate (PCPL) in accordance with BS 2087-1: normal process. No alternative process shall be permitted. 5.5 Water repellent treatment 5.5.1 Where requested by the purchaser (see Appendix A), the fabric shall be rendered permanently wa
25、ter repellent by a process which complies with 6.3. 5.5.2 Water repellent treatments known to accelerate actinic damage shall not be used. 6 Construction and properties of finished fabric NOTEThe minimum usable width of the finished fabric should be as stated by the purchaser in the contract or orde
26、r (see Appendix A), but a minimum usable width of 900 mm is usually supplied. 6.1 Tests When tested in accordance with clause 2, the fabric in the finished state shall comply with 6.2 and 6.3. 6.2 Breaking strength The minimum average breaking strength in both warp and weft directions shall be not l
27、ess than the following: 6.3 Water repellency Where required, the fabric shall be rendered water repellent such that the mean absorption shall not exceed 25 % and the penetration shall be nil, i.e. no individual figure shall exceed nil. 7 Identification The fabric shall be identified for ordering pur
28、poses by the number and date of this British Standard, i.e. BS 6F 37:19901) together with the relevant designation given in Table 2 and, if required, the colour and water repellent treatment. NOTEThis identification may be codified. For example, fabric 429 required dyed to BS 381C Olive drab and wat
29、er repellent, may be identified as BS 6F 37/429/BS 381C No. 298/WR. a) fabric designation 429: 1 400 N/50 mm b) fabric designation 37:1 600 N/50 mm 1) Marking BS 6F 37:1990 on or in relation to a product represents a manufacturers declaration of conformity, i.e. a claim by or on behalf of the manufa
30、cturer that the product meets the requirements of the standard. The accuracy of the claim is therefore solely the responsibility of the person making the claim. Such a declaration is not to be confused with third party certification of conformity, which may also be desirable. Licensed Copy: sheffiel
31、dun sheffieldun, na, Wed Dec 06 12:28:54 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6F 37:1990 BSI 02-20003 Appendix A Information to be supplied by the purchaser The following information should be stated by the purchaser in the contract or order: a) the number of this British Standard, i.e. BS
32、6F 37; b) the fabric designation, selected from Table 2; c) whether identification markers are required (see 4.2); d) if required dyed, the colour (see 5.3); e) whether water repellent treatment is required (see 5.5); f) the minimum usable width required (see clause 6). Licensed Copy: sheffieldun sh
33、effieldun, na, Wed Dec 06 12:28:54 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 4 blank Licensed Copy: sheffieldun sheffieldun, na, Wed Dec 06 12:28:54 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6F 37:1990 BSI 02-2000 Publications referred to BS F 100, Procedure for inspection and testing of textil
34、es for aerospace purposes. BS 381C, Specification for colours for identification, coding and special purposes. BS 2087, Preservative treatments for textiles. BS 2087-1, Specification for treatments. Licensed Copy: sheffieldun sheffieldun, na, Wed Dec 06 12:28:54 GMT+00:00 2006, Uncontrolled Copy, (c
35、) BSI BS 6F 37:1990 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisio
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42、xcept as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means electronic, photocopying, recording or otherwise without prior written permission from BSI. This does not preclude the free use,
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