1、BRITISH STANDARDBS EN ISO 2078:1995BS 946-2:1995Textile glass Yarns DesignationThe European Standard EN ISO 2078:1994 has the status of aBritish StandardBS EN ISO 2078:1994 +A1:2015ICS 59.100.10BS EN ISO 2078:1994+A1:2015ISBN 978 0 580 87026 2Amendments/corrigenda issued since publicationDate Commen
2、ts31 January 2016 Implementation of ISO amendment 1:2015 with CEN endorsement A1:2015: Table 1 updated. All forewords updated and standard renumbered to match ISO identifier and CEN publication year.This British Standard, having been prepared under the direction of the Sector Board for Materials and
3、 Chemicals, was published under the authority of the Standards Board and comes into effect on 15 May 1995 The British Standards Institution 2016 Published by BSI Standards Limited 2016National forewordThis British Standard is the UK implementation of EN ISO 2078:1994+A1:2015. It is identical to ISO
4、2078:1993, incorporating amendment 1:2015. It supersedes BS EN ISO 2078:1995 (dual numbered as BS 946-2:1995) which is withdrawn.Attention is drawn to BS 946:1970, Method for the designation of yarns, which deals also with the designation of yarns in the Tex system.The UK participation in its prepar
5、ation was entrusted to Technical Committee PRI/42, Fibre reinforced thermosetting plastics and prepregs.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are
6、 responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 2078:1994/A1 December 2015 ICS 59.100.10 English Version Textile glass - Yarns - Designation - Amendment 1 (ISO 2078:1993
7、/Amd 1:2015) Verre textile - Fils - Dsignation - Amendement 1 (ISO 2078:1993/Amd 1:2015) Textilglas - Garne - Bezeichnung - nderung 1 (ISO 2078:1993/Amd 1:2015) This amendment A1 modifies the European Standard EN ISO 2078:1994; it was approved by CEN on 3 October 2015. CEN members are bound to compl
8、y with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this amendment into the relevant national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
9、Management Centre or to any CEN member. This amendment exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status
10、 as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
11、Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All
12、 rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 2078:1994/A1:2015 EEN ISO 2078:1994+A1December 2015BS EN ISO 2078:1994+A1:2015EN ISO 2078:1994+A1:2015 (E)ii ForewordThis European Standard was taken over by the Technical Committee CEN/
13、TC 249, Plastics, from the work of ISO/TC 61, Plastics, of the International Organization for Standardization (ISO).CEN/TC 249 had decided to submit the final draft for formal vote. The result was positive.This European Standard shall be given the status of a national standard, either by publication
14、 of an identical text or by endorsement, at the latest by April 1995, and conflicting national standards shall be withdrawn at the latest by April 1995.According to the CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark,
15、 Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, United Kingdom.Foreword to amendment A1This document (EN ISO 2078:1994/A1:2015) has been prepared by Technical Committee ISO/TC 61 “Plastics” in collaboration with Techn
16、ical Committee CEN/TC 249 “Plastics” the secretariat of which is held by NBN.This Amendment to the European Standard EN ISO 2078:1994 shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by June 2016, and conflicting national s
17、tandards shall be withdrawn at the latest by June 2016.Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights.According to the CEN-CENELEC Int
18、ernal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland,
19、Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.Endorsement noticeThe text of ISO 2078:1993/Amd 1:2015 has been approved by CEN as EN ISO 2078:1994/A1:2015 without any
20、modification.BS EN ISO 2078:1994+A1:2015EN ISO 2078:1994+A1:2015 (E)iii ContentsPageForeword iv1 Scope 12 Normative references 13 Definition 14 Designation of a yarn 1Table 1 1BS EN ISO 2078:1994+A1:2015EN ISO 2078:1994+A1:2015 (E)iv ForewordISO (the International Organization for Standardization) i
21、s a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represe
22、nted on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.Draft International Standards
23、adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.International Standard ISO 2078 was prepared by Technical Committee ISO/TC 61, Plastics, Sub-Committee S
24、C 13, Composites and reinforcement fibres.This fifth edition cancels and replaces the fourth edition (ISO 2078:1985), of which subclauses 4.1.1 and 4.2.7 have been technically revised and clause 2 updated.EN ISO 2078:1994 BSI 01-2000 31 ScopeThis International Standard specifies a system of designat
25、ing textile glass yarns including single, multiple-wound, folded (plied), cabled and textured yarns, strands, slivers and rovings based on their linear density expressed in the tex system.This International Standard applies the rules of the single-to-fold designation given in ISO 1139 to these texti
26、le glass products.2 Normative referencesThe following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreeme
27、nts based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards.ISO 2:1973, Textiles Designation of the direction of twis
28、t in yarns and related products. ISO 472:1988, Plastics Vocabulary. ISO 1139:1973, Textiles Designation of yarns. 3 DefinitionsFor the purposes of this International Standard, the definitions given in ISO 2 and ISO 472 apply.4 Designation of a yarn4.1 Elements of the designationAccording to the defi
29、nition given in ISO 1139, the designation of a yarn (single yarn, strand, sliver, ., roving) is a condensed technical description containing the following elements.4.1.1 Glass usedOne or several letters, to specify the glass used by the manufacturer (see Table 1). Table 1 4.1.2 Type of yarnA letter
30、to describe the type of yarn: C (continuous) for continuous-filament yarns, D (discontinuous) for staple-fibre yarns.NOTE 1 These letters are placed in the first group, as it is of special importance in the case of textile glass to distinguish between continuous-filament yarns and staple fibre yarns
31、; their use makes it unnecessary to indicate the number of filaments, preceded by the symbol f, as proposed in ISO 1139.4.1.3 Nominal diameter of fibreA number, consisting of one or two figures, giving the nominal diameter, in micrometres, of the filament or staple fibre.4.1.4 Linear density, direct
32、ion and amount of twist and number of componentsSome, or all, of the following elements, as in ISO 1139:a) a number giving the linear density expressed in the tex system. It is strongly recommended that the tex be used as the basic unit, in which case the word “tex” can be omitted from the designati
33、on (if multiples or submultiples of the tex are used, these units shall be indicated after the value given for linear density);b) the direction(s) of twist;1)c) the amount(s) of twist, expressed in turns per metre, for the twist of the final stage, and (if necessary) in the full designation, for the
34、 twist of each intermediate stage;d) the number of components in folding (plying) or cabling.Type General indicationsEDACSRARE-CRfor general purposes; good electrical propertiesgood dielectric propertieshigh alkali contentchemical resistancehigh mechanical strengthhigh mechanical strengthalkali resi
35、stantfor use in acid environments1) If the yarn has been subjected to a twisting operation, this shall be indicated by the direction of twist followed by the degree of twist. If the designation does not include any mention of twist, this shall always be taken to signify the absence of any twisting o
36、peration.EN ISO 2078:1994 BSI 01-2000 31 ScopeThis International Standard specifies a system of designating textile glass yarns including single, multiple-wound, folded (plied), cabled and textured yarns, strands, slivers and rovings based on their linear density expressed in the tex system.This Int
37、ernational Standard applies the rules of the single-to-fold designation given in ISO 1139 to these textile glass products.2 Normative referencesThe following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publi
38、cation, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain regist
39、ers of currently valid International Standards.ISO 2:1973, Textiles Designation of the direction of twist in yarns and related products. ISO 472:1988, Plastics Vocabulary. ISO 1139:1973, Textiles Designation of yarns. 3 DefinitionsFor the purposes of this International Standard, the definitions give
40、n in ISO 2 and ISO 472 apply.4 Designation of a yarn4.1 Elements of the designationAccording to the definition given in ISO 1139, the designation of a yarn (single yarn, strand, sliver, ., roving) is a condensed technical description containing the following elements.4.1.1 Glass usedOne or several l
41、etters, to specify the glass used by the manufacturer (see Table 1). Table 1 4.1.2 Type of yarnA letter to describe the type of yarn: C (continuous) for continuous-filament yarns, D (discontinuous) for staple-fibre yarns.NOTE 1 These letters are placed in the first group, as it is of special importa
42、nce in the case of textile glass to distinguish between continuous-filament yarns and staple fibre yarns; their use makes it unnecessary to indicate the number of filaments, preceded by the symbol f, as proposed in ISO 1139.4.1.3 Nominal diameter of fibreA number, consisting of one or two figures, g
43、iving the nominal diameter, in micrometres, of the filament or staple fibre.4.1.4 Linear density, direction and amount of twist and number of componentsSome, or all, of the following elements, as in ISO 1139:a) a number giving the linear density expressed in the tex system. It is strongly recommende
44、d that the tex be used as the basic unit, in which case the word “tex” can be omitted from the designation (if multiples or submultiples of the tex are used, these units shall be indicated after the value given for linear density);b) the direction(s) of twist;1)c) the amount(s) of twist, expressed i
45、n turns per metre, for the twist of the final stage, and (if necessary) in the full designation, for the twist of each intermediate stage;d) the number of components in folding (plying) or cabling.Type General indicationsEDACSRARE-CRfor general purposes; good electrical propertiesgood dielectric pro
46、pertieshigh alkali contentchemical resistancehigh mechanical strengthhigh mechanical strengthalkali resistantfor use in acid environments1) If the yarn has been subjected to a twisting operation, this shall be indicated by the direction of twist followed by the degree of twist. If the designation do
47、es not include any mention of twist, this shall always be taken to signify the absence of any twisting operation.EN ISO 2078:1994 BSI 01-2000 31 ScopeThis International Standard specifies a system of designating textile glass yarns including single, multiple-wound, folded (plied), cabled and texture
48、d yarns, strands, slivers and rovings based on their linear density expressed in the tex system.This International Standard applies the rules of the single-to-fold designation given in ISO 1139 to these textile glass products.2 Normative referencesThe following standards contain provisions which, th
49、rough reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards.ISO 2:1973, Textiles Designation of the direction of twist in yarns and related products. ISO 472:1988, P
