ISO 18636

• Abstract:

  This document describes the method of determination of the elongation under load and the residual deformation of coated fabrics.

• Status: Not Published
• ICS: 59.080.40 - Coated fabrics
• Technical Committee: ISO/TC 45/SC 4 - Products (other than hoses)
• Drafting Committee: ISO/TC 45/SC 4 - Products (other than hoses)
• Current Stage: 6000 - International Standard under publication
• Start Date: 31-Jul-2026
• Completion Date: 01-Aug-2026

• Consolidates: FprEN ISO 18636 - Rubber or plastic coated fabrics - Mechanical properties - Determination of the elongation under load and the residual deformation (ISO/FDIS 18636:2026)
• Effective Date: 12-Feb-2026
• Consolidates: ISO/ASTM 52908:2023 - Additive manufacturing of metals — Finished part properties — Post-processing, inspection and testing of parts produced by powder bed fusion
• Effective Date: 19-Apr-2025

Overview

ISO 18636 sets out standardized methods for determining the mechanical properties of rubber or plastic coated fabrics, specifically focusing on elongation under load and residual deformation. Developed by the International Organization for Standardization (ISO), this standard ensures that coated fabrics used in various industries can be reliably tested for their mechanical strength, durability, and ability to withstand stress. Proper assessment of these properties is essential for quality assurance, product development, and compliance in sectors like automotive, construction, and textiles.

Key Topics

• Elongation Under Load
  The standard details how to measure the initial stretching of coated fabrics when a specified load is applied. This process involves marking test strips, applying mechanical load for a set duration, and recording the extension that occurs.

• Residual Deformation
  After removing the applied load, the amount of permanent deformation left in the fabric is calculated. This reveals how well the coated fabric can recover its original dimensions after being stressed, which is critical for many practical applications.

• Sample Preparation and Testing Conditions
  ISO 18636 stipulates precise requirements for preparing test specimens and describes the conditioning atmosphere, referencing ISO 2231 to ensure consistency during testing.

• Equipment Requirements
  The standard specifies the use of calibrated rulers, calipers, manual loading devices, steel plate clamps, and a hot air oven (according to ISO 1419) for accelerated aging. These stipulations help guarantee accuracy and repeatability of test results.

• Reporting
  Detailed requirements for the test report are included, ensuring consistency and transparency in how results are presented.

Applications

ISO 18636 is widely applicable across industries that utilize rubber or plastic coated fabrics:

• Architectural and Structural Membranes
  Used in tensile structures and roofing, where precise measurement of elongation under sustained loads ensures structural integrity and safety.

• Automotive and Transportation
  Used for coated fabric components such as seat covers, convertible tops, and protective barriers. Testing for elongation and permanent deformation verifies product longevity and performance under stress.

• Textile Industry
  Applied in the manufacture of upholstery, protective clothing, and industrial fabrics. Mechanical property testing ensures suitability for high-wear applications and compliance with regulatory or contractual requirements.

• Industrial Applications
  Products such as conveyor belts, inflatable structures, and flexible ducting are also assessed for their stress and deformation characteristics, guided by this standard.

Related Standards

• ISO 1419:2019 - Rubber- or plastics-coated fabrics - Accelerated-ageing tests
  Provides a method for evaluating the effects of heat and ageing, often used in conjunction with ISO 18636 for comprehensive material assessment.

• ISO 2231 - Rubber- or plastics-coated fabrics - Standard atmospheres for conditioning and testing
  Specifies the controlled conditions required during test preparation and execution, ensuring the reliability of results.

• Other ISO Standards for Mechanical Testing
  While ISO 18636 focuses on elongation and residual deformation, other ISO standards address aspects like tensile strength, tear resistance, and puncture resistance, offering a complete framework for testing coated fabrics.

---

ISO 18636 delivers a clear, reproducible approach to assessing key mechanical properties of coated fabrics, supporting manufacturers, quality controllers, and end-users in selecting materials that meet their performance criteria. Adhering to this standard helps guarantee product quality, safety, and international market acceptance.

FINAL DRAFT
International
Standard
ISO/FDIS 18636
ISO/TC 45/SC 4
Rubber or plastic coated fabrics —
Secretariat: DSM
Mechanical properties —
Voting begins on:
Determination of the elongation
2026-06-04
under load and the residual
Voting terminates on:
deformation
2026-07-30
Supports textiles revêtus de caoutchouc ou de plastique —
Propriétés mécaniques — Détermination de l'allongement sous
charge et de la déformation résiduelle
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
ISO/CEN PARALLEL PROCESSING LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
Reference number
ISO/FDIS 18636:2026(en) © ISO 2026

FINAL DRAFT
ISO/FDIS 18636:2026(en)
International
Standard
ISO/FDIS 18636
ISO/TC 45/SC 4
Rubber or plastic coated fabrics —
Secretariat: DSM
Mechanical properties —
Voting begins on:
Determination of the elongation
under load and the residual
Voting terminates on:
deformation
Supports textiles revêtus de caoutchouc ou de plastique —
Propriétés mécaniques — Détermination de l'allongement sous
charge et de la déformation résiduelle
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
© ISO 2026
IN ADDITION TO THEIR EVALUATION AS
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
ISO/CEN PARALLEL PROCESSING
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
or ISO’s member body in the country of the requester.
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
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 Reference number
ISO/FDIS 18636:2026(en) © ISO 2026

ii
ISO/FDIS 18636:2026(en)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Apparatus . 1
6 Preparation of test specimens . 2
7 Mechanical loading test . 2
8 Residual deformation after heat exposure and mechanical loading . 3
9 Calculation . 3
10 Test report . 4

iii
ISO/FDIS 18636:2026(en)
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 document 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).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and 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 45, Rubber and rubber products, Subcommittee
SC 4, Products (other than hoses), in collaboration with the European Committee for Standardization (CEN)
Technical Committee CEN/TC 248, Textiles and textile products, in accordance with the Agreement on
technical cooperation between ISO and CEN (Vienna Agreement).
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these
...

ISO/DIS FDIS 18636:2025(en)
ISO/TC 45/SC 4/WG 13
Secretariat: DSM
Date: 2025-10-072026-05-21
Rubber or plastic coated fabrics — Mechanical properties —
Determination of the elongation under load and the residual
deformation
Supports textiles revêtus de caoutchouc ou de plastique — Propriétés mécaniques — Détermination de
l'allongement sous charge et de la déformation résiduelle
FDIS stage
TThihis drs draafftt i is s ssuubbmmiitttteedd ttoo aa ppaarraallellel l vvoottee i inn IISSOO,, CCEEN.N.

ISO #####-#:####(X/FDIS 18636:2026(en)
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: + 41 22 749 01 11
EmailE-mail: [e-mail]
Website: www.iso.org
Published in Switzerland
© ISO #### 2026 – All rights reserved
ii
ISO/DISFDIS 18636:20252026(en)
Contents
Foreword . iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Apparatus . 1
6 Preparation of test specimens . 2
7 Mechanical loading test . 2
8 Residual deformation after heat exposure and mechanical loading . 3
9 Calculation . 3
10 Test report . 4

iii
ISO #####-#:####(X/FDIS 18636:2026(en)
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 document 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).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent rights
in respect thereof. As of the date of publication of this document, ISO had not received notice of (a) patent(s)
which may be required to implement this document. However, implementers are cautioned that this may not
represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and 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 45, Rubber and rubber products, Subcommittee
SC 4, Products (other than hoses), in collaboration with the European Committee for Standardization (CEN)
Technical Committee CEN/TC 248, Textiles and textile products, in accordance with the Agreement on technical
cooperation between ISO and CEN (Vienna Agreement).
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
© ISO #### 2026 – All rights reserved
iv
DRAFT International Standard ISO/DIS 18636:2025(en)

Rubber or plastic coated fabrics — Mechanical properties —
Determination of the elongation under load and the residual
deformation
1 Scope
This document specifies the method offor determination of the elongation under load and the residual
deformation of coated fabrics.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements of this document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
ISO 1419:2019, Rubber- or plastics-coated fabrics — Accelerated-ageing tests
ISO 2231, Rubber- or plastics-coated fabrics — Standard atmospheres for conditioning and testing
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— — ISO Online browsing platform: available at https://ww
...

PROJET FINAL
Norme
internationale
ISO/FDIS 18636
ISO/TC 45/SC 4
Supports textiles revêtus de
Secrétariat: DSM
caoutchouc ou de plastique —
Début de vote:
Propriétés mécaniques —
2026-06-04
Détermination de l'allongement
Vote clos le:
sous charge et de la déformation
2026-07-30
résiduelle
Rubber or plastic coated fabrics — Mechanical properties —
Determination of the elongation under load and the residual
deformation
LES DESTINATAIRES DU PRÉSENT PROJET SONT
INVITÉS À PRÉSENTER, AVEC LEURS OBSERVATIONS,
NOTIFICATION DES DROITS DE PROPRIÉTÉ DONT ILS
AURAIENT ÉVENTUELLEMENT CONNAISSANCE ET À
FOURNIR UNE DOCUMENTATION EXPLICATIVE.
OUTRE LE FAIT D’ÊTRE EXAMINÉS POUR
ÉTABLIR S’ILS SONT ACCEPTABLES À DES FINS
INDUSTRIELLES, TECHNOLOGIQUES ET COM-MERCIALES,
AINSI QUE DU POINT DE VUE DES UTILISATEURS, LES
PROJETS DE NORMES
TRAITEMENT PARALLÈLE ISO/CEN
INTERNATIONALES DOIVENT PARFOIS ÊTRE CONSIDÉRÉS
DU POINT DE VUE DE LEUR POSSI BILITÉ DE DEVENIR DES
NORMES POUVANT
SERVIR DE RÉFÉRENCE DANS LA RÉGLEMENTATION
NATIONALE.
Numéro de référence
ISO/FDIS 18636:2026(fr) © ISO 2026

PROJET FINAL
ISO/FDIS 18636:2026(fr)
Norme
internationale
ISO/FDIS 18636
ISO/TC 45/SC 4
Supports textiles revêtus de
Secrétariat: DSM
caoutchouc ou de plastique —
Début de vote:
Propriétés mécaniques —
2026-06-04
Détermination de l'allongement
Vote clos le:
sous charge et de la déformation
2026-07-30
résiduelle
Rubber or plastic coated fabrics — Mechanical properties —
Determination of the elongation under load and the residual
deformation
LES DESTINATAIRES DU PRÉSENT PROJET SONT
INVITÉS À PRÉSENTER, AVEC LEURS OBSERVATIONS,
NOTIFICATION DES DROITS DE PROPRIÉTÉ DONT ILS
AURAIENT ÉVENTUELLEMENT CONNAISSANCE ET À
FOURNIR UNE DOCUMENTATION EXPLICATIVE.
DOCUMENT PROTÉGÉ PAR COPYRIGHT
OUTRE LE FAIT D’ÊTRE EXAMINÉS POUR
ÉTABLIR S’ILS SONT ACCEPTABLES À DES FINS
© ISO 2026 INDUSTRIELLES, TECHNOLOGIQUES ET COM-MERCIALES,
AINSI QUE DU POINT DE VUE DES UTILISATEURS, LES
Tous droits réservés. Sauf prescription différente ou nécessité dans le contexte de sa mise en œuvre, aucune partie de cette
PROJETS DE NORMES
TRAITEMENT PARALLÈLE ISO/CEN
INTERNATIONALES DOIVENT PARFOIS ÊTRE CONSIDÉRÉS
publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique,
DU POINT DE VUE DE LEUR POSSI BILITÉ DE DEVENIR DES
y compris la photocopie, ou la diffusion sur l’internet ou sur un intranet, sans autorisation écrite préalable. Une autorisation peut
NORMES POUVANT
être demandée à l’ISO à l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
SERVIR DE RÉFÉRENCE DANS LA RÉGLEMENTATION
NATIONALE.
ISO copyright office
Case postale 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Genève
Tél.: [phone]
E-mail: [e-mail]
Web: www.iso.org
Publié en Suisse Numéro de référence
ISO/FDIS 18636:2026(fr) © ISO 2026

ii
ISO/FDIS 18636:2026(fr)
Sommaire Page
Avant-propos .iv
1 Domaine d’application . 1
2 Références normatives . 1
3 Termes et définitions . 1
4 Principe. 1
5 Appareillage . 1
6 Préparation des éprouvettes . 2
7 Essai de chargement mécanique . 2
8 Déformation résiduelle après exposition à la chaleur et chargement mécanique . 3
9 Calcul . 4
10 Rapport d'essai . 4

iii
ISO/FDIS 18636:2026(fr)
Avant-propos
L'ISO (Organisation internationale de normalisation) est une fédération mondiale d'organismes nationaux
de normalisation (comités membres de l'ISO). L'élaboration des Normes internationales est en général
confiée aux comités techniques de l'ISO. Chaque comité membre intéressé par une étude a le droit de faire
partie du comité technique créé à cet effet. Les organisations internationales, gouvernementales et non
gouvernementales, en liaison avec l'ISO participent également aux travaux. L'ISO collabore étroitement avec
la Commission électrotechnique internationale (IEC) en ce qui concerne la normalisation électrotechnique.
Les procédures utilisées pour élaborer le présent document et celles destinées à sa mise à jour sont
décrites dans les Directives ISO/IEC, Partie 1. Il convient, en particulier, de prendre note des différents
critères d'approbation requis pour les différents types de documents ISO. Le présent document
a été rédigé conformément aux règles de rédaction données dans les Directives ISO/IEC, Partie 2
(voir www.iso.org/directives).
L'ISO attire l'attention sur le fait que la mise en application du présent document peut entraîner l'utilisation
d'un ou de plusieurs brevets. L'ISO ne prend pas position quant à la preuve, à la validité et à l'applicabilité
de tout droit de brevet revendiqué à cet égard. À la date de publication du présent document, l'ISO n’avait
pas reçu notification qu'un ou plusieurs brevets pouvaient être nécessaires à sa mise en application.
Toutefois, il y a lieu d'avertir les responsables de la mise en application du présent document que des
informations plus récentes sont susceptibles de figurer dans la base de données de brevets, disponible à
l'adresse www.iso.org/brevets. L'ISO ne saurait être tenue pour responsable de ne pas avoir identifié tout ou
partie de tels droits de brevet.
Les appellations commerciales éventuellement mentionnées dans le présent document sont données pour
information, par souci de commodité, à l'intention des utilisateurs et ne sauraient constituer un engagement.
Pour une explication de la nature volontaire des normes, la signification des termes et expressions
spécifiques de l'ISO liés à l'évaluation de la conformité, ou pour toute information au sujet de l'adhésion de
l'ISO aux principes de l'Organisation mondiale du commerce (OMC) concernant les obstacles techniques au
commerce (OTC), voir le lien suivant: www.iso.org/iso/fr/avant-propos.html.
Le présent document a été élaboré par le comité technique ISO/TC 45, Élastomères et produits à base
d'élastomères, sous-comité SC 4, Produits (autres que tuyaux), en collaboration avec le comité technique CEN/
TC 248, Textiles et produits textiles, du Comité européen de normalisation (CEN), conformément à l'Accord de
coopération technique entre l'ISO et le CEN (Accord de Vienne).
Il convient que l'utilisateur adresse tout retour d'information ou toute question concernant le présent
document à l'organisme national de normalisation de son pays. Une liste exhaustive desdits organismes se
trouve à l'adresse www.iso.org/fr/members.html.

iv
PROJET FINAL Norme internationale ISO/FDIS 18636:2026(fr)
Supports textiles revêtus de caoutchouc ou de plastique —
Propriétés mécaniques — Détermination de l'allong
...