SIST EN ISO 2078:2022

Textile glass - Yarns - Designation (ISO 2078:2022)

This document 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.

Textilglas - Garne - Bezeichnung (ISO 2078:2022)

Dieses Dokument legt ein Bezeichnungssystem für Textilglasgarne (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.

Verre textile - Fils - Désignation (ISO 2078:2022)

Le présent document spécifie un système de désignation des fils de verre textile (fils simples, assemblés, retors, câblés et texturés, fils de base, rubans et stratifils) à l’aide de la masse linéique, exprimée dans le système Tex.

Steklena vlakna - Preja - Označevanje (ISO 2078:2022)

Ta dokument določa sistem označevanja preje iz steklenih vlaken (vključno z enojno, večkratno pleteno,
zgibano (sukano), kablano in teksturirano prejo, vrvmi, trakovi preje in predprejo) na podlagi njihove dolžinske mase,
izražene v sistemu tex.

General Information

• Status: Published
• Public Enquiry End Date: 31-Jul-2021
• Publication Date: 13-Apr-2022
• ICS: 59.100.10 - Textile glass materials
• Technical Committee: IPMA - Polimer materials and products
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 06-Apr-2022
• Due Date: 11-Jun-2022
• Completion Date: 14-Apr-2022
• Ref Project: EN ISO 2078:2022 - Textile glass - Yarns - Designation (ISO 2078:2022)

Relations

• Replaces: SIST EN ISO 2078:1999 - Textile glass - Yarns - Designation (ISO 2078:1993)
• Effective Date: 06-Apr-2022
• Replaces: SIST EN ISO 2078:1999/A1:2016 - Textile glass - Yarns - Designation (ISO 2078:1993/FDAM 1:2015)
• Effective Date: 06-Apr-2022

Overview - EN ISO 2078:2022 (Textile glass - Yarns - Designation)

EN ISO 2078:2022 specifies a harmonized system for the designation of textile glass yarns (single, multiple-wound, folded/plied, cabled, textured yarns, strands, slivers and rovings) based on their linear density expressed in the tex system. Adopted by CEN from ISO 2078:2022, this standard replaces earlier editions and defines the information and format manufacturers and users should include in a concise yarn designation.

Key topics and technical requirements

• Designation elements: The condensed technical description includes - where applicable - the glass type, yarn type, nominal fibre diameter (µm), linear density (tex), twist direction and amount (turns per metre), number of components (plying/cabling), and an optional manufacturer’s code.
• Glass type codes: Single-letter codes identify glass composition (from Table 1), e.g. E, D, A, C, S, R, AR, E‑CR, Q, QB, BF, each with specific general indications (electrical properties, alkali resistance, high silica, basalt, etc.).
• Yarn type codes: Letters denote yarn form - C (continuous filament), D (discontinuous/staple), B (binary/composite).
• Linear density unit: Tex is the preferred base unit; multiples or submultiples may be used but must be indicated.
• Formatting rules: The standard follows ISO 1139’s single-to-fold designation rules and provides examples (e.g., EC9 34 Z 40, ED7 190 Z 160, EC9 340 T352) to illustrate common cases like textured yarns, folded yarns, and assembled strands.

Applications and practical value

• Ensures consistent product labeling and clear technical communication across supply chains.
• Facilitates specification, procurement and quality control of glass yarns used as reinforcement in composites and technical textiles.
• Supports traceability and interchangeability between manufacturers, converters and end-users by standardizing the essential technical data in a compact format.
• Useful for technical documentation, batch records and product data sheets where a concise, internationally recognized yarn designation is required.

Who should use this standard

• Glass-fibre yarn and roving manufacturers
• Composite and reinforced plastics producers (design/specification teams)
• Technical textile converters, fabricators and engineers
• Procurement, quality assurance and testing laboratories
• Standards writers and regulatory bodies involved in materials specification

Related standards

• ISO 1139 - Designation of yarns (single-to-fold rules)
• ISO 2 - Direction of twist designation
• ISO 472 - Plastics - Vocabulary

Using EN ISO 2078:2022 helps organizations communicate yarn properties unambiguously, improving interoperability and reducing errors in material selection and specification.

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-2022
Nadomešča:
SIST EN ISO 2078:1999
SIST EN ISO 2078:1999/A1:2016
Steklena vlakna - Preja - Označevanje (ISO 2078:2022)
Textile glass - Yarns - Designation (ISO 2078:2022)
Textilglas - Garne - Bezeichnung (ISO 2078:2022)
Verre textile - Fils - Désignation (ISO 2078:2022)
Ta slovenski standard je istoveten z: EN ISO 2078:2022
ICS:
59.100.10 Materiali iz steklenih vlaken Textile glass materials
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 2078
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2022
EUROPÄISCHE NORM
ICS 59.100.10 Supersedes EN ISO 2078:1994, EN ISO
2078:1994/A1:2015
English Version
Textile glass - Yarns - Designation (ISO 2078:2022)
Verre textile - Fils - Désignation (ISO 2078:2022) Textilglas - Garne - Bezeichnung (ISO 2078:2022)
This European Standard was approved by CEN on 4 January 2022.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a 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 Management Centre or to any CEN
member.
This European Standard 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 as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 2078:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 2078:2022) has been prepared by Technical Committee ISO/TC 61 "Plastics" in
collaboration with Technical Committee CEN/TC 249 “Plastics” the secretariat of which is held by NBN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by September 2022, and conflicting national standards
shall be withdrawn at the latest by September 2022.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 2078:1994.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal 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, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 2078:2022 has been approved by CEN as EN ISO 2078:2022 without any modification.

INTERNATIONAL ISO
STANDARD 2078
Sixth edition
2022-03
Textile glass — Yarns — Designation
Verre textile — Fils — Désignation
Reference number
ISO 2078:2022(E)
ISO 2078:2022(E)
© ISO 2022
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
ISO 2078:2022(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Designation of a yarn . 1
4.1 Elements of the designation . 1
4.1.1 General . 1
4.1.2 Glass used . 1
4.1.3 Type of yarn . 2
4.1.4 Nominal diameter of fibre . 2
4.1.5 Linear density, direction and amount of twist and number of components . 2
4.1.6 Manufacturer's code . 3
4.2 Designation of different types of textile glass yarn . 3
4.2.1 Strands . 3
4.2.2 Slivers . 3
4.2.3 Single yarns . 3
4.2.4 Folded (plied) (doubled) yarns . 4
4.2.5 Cabled yarns . 5
4.2.6 Multiple wound yarns . 5
4.2.7 Rovings. 6
4.2.8 Chopped strands . . 6
iii
ISO 2078:2022(E)
Foreword
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. Each 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.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
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expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 13,
Composites and reinforcement fibres, in collaboration with the European Committee for Standardization
(CEN) Technical Committee CEN/TC 249, Plastics, in accordance with the Agreement on technical
cooperation between ISO and CEN (Vienna Agreement).
This sixth edition cancels and replaces the fifth edition (ISO 2078:1993), which has been technically
revised. It also incorporates the Amendment ISO 2078:1993/Amd.1:2015. The main changes are as
follows:
— three type of glass used in Table 1 have been added;
— one
...