Textile glass - Yarns - Designation (ISO 2078:1993)

Specifies a system of designating textile glass yarns based on their linear density expressed in the Tex System. The designation of a yarn consists of following elements: Type of glass used; type of yarn (continous or staple fiber); nominal diameter of fiber; linear density, direction, amount of twist and number of components. The definitions and rules of the singel-to-fold designation given in ISO 1139 are applied to these textile glass products.

Textilglas - Garne - Bezeichnung (ISO 2078:1993)

Diese Europäische Norm legt ein Bezeichnungssystem für Textiliglasgarne (einschliesslich einfacher und gefachter Garne, einstufiger und mehrstufiger Zwirne, texturierter Garne, Spinnfäden, Stapelfaser-Vorgarnen und Rovings), das  auf ihrer Feinheit im Tex-System beruht, fest. In dieser Europäischen Norm werden für diese Textilglaserzeugnisse die in ISO 1139 angegebenen Regeln für die von der Einfachgarnfeinheit ausgehende Bezeichnung angewandt.

Verre textile - Fils - Désignation (ISO 2078:1993)

La présente Norme internationale établit un système de désignation pour les fils de verre textile (fils simples, assemblés, retors et câblés, texturés, fils de base, rubans et stratifils) à l'aide de la masse linéique, exprimée dans le système Tex. La présente Norme internationale applique les règles de la désignation du fil simple au retors exposée dans l'ISO 1139 à ces fils de verre textile.

Steklena vlakna – Preja - Označevanje (ISO 2078:1993)

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SIST EN ISO 2078:1999
Textile glass - Yarns - Designation (ISO 2078:1993)
Textilglas - Garne - Bezeichnung (ISO 2078:1993)
Verre textile - Fils - Désignation (ISO 2078:1993)
Ta slovenski standard je istoveten z: EN ISO 2078:1994
59.100.10 Materiali iz steklenih vlaken Textile glass materials
SIST EN ISO 2078:1999 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 2078:1999

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SIST EN ISO 2078:1999

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SIST EN ISO 2078:1999

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SIST EN ISO 2078:1999
Fifth edition
Textile glass - Yarns - Designation
Verre textile - Fils - Dbsignation
Reference number
ISO 2078:1993(E)

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SIST EN ISO 2078:1999
ISO 2078:1993(E)
ISO (the International Organization for Standardization) is a worldwide
federation of national Standards bodies (ISO member bodies). The work
of preparing International Standards is normally carried out through ISO
technical committees. Esch member body interested in a subject for
which a technical committee has been established has the right to be
represented 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 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
lSO/TC 61, Hastics, Sub-Committee SC 13, Composites and reinforce-
men t fibres.
This fifth edition cancels and replaces the fourth edition (ISO 2078:1985),
of which subclauses 4.1 .l and 4.2.7 have been technically revised and
clause 2 updated.
0 ISO 1993
All rights reserved. No part of this publication may be reproduced or utilized in any form or
by any means, electronie or mechanical, including photocopying and microfilm, without per-
mission in writing from the publisher.
International Organization for Standardization
Case Postale 56 l CH-1 211 Geneve 20 l Switzerland
Printed in Switzerland

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SIST EN ISO 2078:1999
Textile glass - Yarns - Designation
roving) is a condensed technical description contain-
1 Scope
ing the following elements.
This International Standard specifies a System of
designating textile glass yarns [including Single,
4.1.1 Glass used
multiple-wound, folded (plied), cabled and textured
yarns, Strands, slivers and rovings] based on their Iin-
One or several letters, to specify the glass used by
ear density expressed in the tex System.
the manufacturer (see table 1).
This International Standard applies the rules of the
Single-to-fold designation given in ISO 1139 to these
Table 1
textile glass products.
General indications
2 Normative references
for general purposes; good electrical
The following Standards contain provisions which,
D good dielectric properties
through reference in this text, constitute provisions
A high alkali content
of this International Standard. At the time of publi-
C Chemical resistance
cation, the editions indicated were valid. All Standards
are subject to revision, and Parties to agreements S high mechanical strength
based on this International Standard are encouraged
R high mechanical strength
to investigate the possibility of applying the most re-
AR alkali resistant
cent editions of the Standards indicated below.
E-CR for use in acid environments
Members of IEC and ISO maintain registers of cur-
rently valid International Standards.
ISO 2:1973, Textiles - Designa tjon of the direction
4.1.2 Type of yarn
of twist in yarns and rela ted products.
A letter to describe the type of yarn:
ISO 472: 1988, Plastics - Vocabulary.
- C (continuous) for continuous-filament yarns,
ISO 1139: 1973, Textiles - Designation of yarns.
- D (discontinuous) for staple-fibre yarns.
3 Definitions
NOTE 7 These letters are placed in the first group, as it
is of special importante in the case of textile glass to dis-
For the purposes of this International Standard, the
tinguish between continuous-filament yarns and staple fibre
definitions given in ISO 2 and ISO 472 apply.
yarns; their use makes it unnecessary to indicate the num-
ber of filaments, preceded by the Symbol f, as proposed in
ISO 1139.
4 Designation of a yarn
4.1.3 Nominal diameter of fibre
4.1 Elements of the designation
A number, consisting of one or two figures, giving the
nominal diameter, in micrometres, of the filament or
According to the definition given in ISO 1139, the
staple fibre.
designation of a yarn (Single yarn, Strand, sliver, . . . .

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SIST EN ISO 2078:1999
ISO 2078:1993(E)
4.1.4 Linear density, direction and amount of 4.2.2 Slivers
twist and number of components
a) the type of glass used;
Some, or all, of the following elements, as in
ISO 1139: b) the letter D (discontinuous) for staple-fibre yarns;
c) the nominal diameter, in micrometres, of the sta-
a) a number giving the linear density expressed in the
ple fibres, followed by a space;
tex System. lt is strongly recommended that the
tex be used as the basic unit, in which case the
d) the linear density, preferably in tex [see 4.1.4 a)].
word “tex” tan 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);
4.2.3 Single yarns
b) the direction(s) of twist;‘)
c) the amount(s) of twist, expressed in turns per Single continuous-filament yarns
metre, for the twist of the final Stage, and (if
necessary) in the full designation, for the twist of
a) the type of glass used;
each intermediate Stage;
b) the letter C for continuous-filament yarn;
d) the number of components in folding (plying) or
c) the nominal diameter, in micrometres, of the fila-
ments, followed by a space;
4.1.5 Manufacturer’s code
d) the linear density, preferably in tex [see 4.1.4 a)],
followed by a space;
If desired, the designation may also include the
manufacturer’s Code, permitting the incorporation of
e) the direction of twist, followed by a space;
any complementary information that does not appear
among the previous elements, for example the type
f) the amount of twist, express

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