EN ISO 8307:2018
(Main)Flexible cellular polymeric materials - Determination of resilience by ball rebound (ISO 8307:2018)
Flexible cellular polymeric materials - Determination of resilience by ball rebound (ISO 8307:2018)
This document specifies a method for determining the resilience by ball rebound of flexible cellular polymeric materials.
Weich-elastische polymere Schaumstoffe - Bestimmung der Kugel-Rückprallelastizität (ISO 8307:2018)
Dieses Dokument legt ein Verfahren zur Bestimmung der Kugel-Rückprallelastizität von weich-elastischen polymeren Schaumstoffen fest.
Matériaux polymères alvéolaires souples - Détermination de la résilience par rebondissement d'une bille (ISO 8307:2018)
Le présent document spécifie une méthode d'essai utilisant le rebondissement d'une bille pour déterminer la résilience de matériaux polymères alvéolaires souples.
Mehki penjeni polimerni materiali - Ugotavljanje prožnosti z odbojem kroglice (ISO 8307:2018)
V tem dokumentu je določena metoda za ugotavljanje prožnosti z odbojem kroglice pri prožnih celičnih
polimernih materialih.
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-november-2018
1DGRPHãþD
SIST EN ISO 8307:2008
Mehki penjeni polimerni materiali - Ugotavljanje prožnosti z odbojem kroglice (ISO
8307:2018)
Flexible cellular polymeric materials - Determination of resilience by ball rebound (ISO
8307:2018)
Weich-elastische polymere Schaumstoffe - Bestimmung der Kugel-Rückprallelastizität
(ISO 8307:2018)
Matériaux polymères alvéolaires souples - Détermination de la résilience par
rebondissement d'une bille (ISO 8307:2018)
Ta slovenski standard je istoveten z: EN ISO 8307:2018
ICS:
83.100 Penjeni polimeri Cellular materials
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 8307
EUROPEAN STANDARD
NORME EUROPÉENNE
August 2018
EUROPÄISCHE NORM
ICS 83.100 Supersedes EN ISO 8307:2007
English Version
Flexible cellular polymeric materials - Determination of
resilience by ball rebound (ISO 8307:2018)
Matériaux polymères alvéolaires souples - Weich-elastische polymere Schaumstoffe -
Détermination de la résilience par rebondissement Bestimmung der Kugel-Rückprallelastizität (ISO
d'une bille (ISO 8307:2018) 8307:2018)
This European Standard was approved by CEN on 15 August 2018.
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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, 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
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 8307:2018 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 8307:2018) has been prepared by Technical Committee ISO/TC 45 "Rubber and
rubber products" 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 February 2019, and conflicting national standards
shall be withdrawn at the latest by February 2019.
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 8307:2007.
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, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 8307:2018 has been approved by CEN as EN ISO 8307:2018 without any modification.
INTERNATIONAL ISO
STANDARD 8307
Third edition
2018-07
Flexible cellular polymeric
materials — Determination of
resilience by ball rebound
Matériaux polymères alvéolaires souples — Détermination de la
résilience par rebondissement d'une bille
Reference number
ISO 8307:2018(E)
©
ISO 2018
ISO 8307:2018(E)
© ISO 2018
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
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Published in Switzerland
ii © ISO 2018 – All rights reserved
ISO 8307:2018(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Apparatus . 1
5.1 General . 1
5.2 Apparatus with manual reading . 2
5.3 Apparatus with automatic reading . 2
6 Test pieces . 3
7 Number of test pieces . 3
8 Test conditions and conditioning . 3
9 Procedure. 3
9.1 Preflex conditioning . 3
9.2 Test method . 4
10 Expression of results . 4
11 Precision . 4
12 Test report . 4
Annex A (informative) Example of electronic measurement procedure .6
ISO 8307:2018(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).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on 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 the following
URL: 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).
This third edition cancels and replaces the second edition (ISO 8307:2007), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— Figure 1 has been modified.
— Annex A has been revised to represent the practical electric measurement.
iv © ISO 2018 – All rights reserved
INTERNATIONAL STANDARD ISO 8307:2018(E)
Flexible cellular polymeric materials — Determination of
resilience by ball rebound
1 Scope
This document specifies a method for determining the resilience by ball rebound of flexible cellular
polymeric materials.
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 23529, Rubber — General procedures for preparing and conditioning test pieces for physical test methods
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at http: //www .iso .org/obp
— IEC Electropedia: available at http: //www .electropedia .org/
3.1
open-cell flexible cellular material
flexible cellular material with less than 25 % of its cell volume closed
3.2
closed-cell flexible cellular material
flexible cellular material with more than 25 % of its cell volume closed
4 Principle
A steel ball is dropped on to a test piece from a specified height and the height of rebound is measured.
5 Apparatus
5.1 General
The rebound test apparatus (see Figure 1) shall consist of a vertical transparent tube, of inside diameter
30 mm to 65 mm. A steel ball of diameter 16 mm ± 0,5 mm and mass of 16,8 g ± 1,5 g is dropped vertically
on the test piece through the tube from a height of 500 mm ± 0,5 mm using a magnet or other suitable
device. The steel ball shall be released so that it falls without rotation and is effectively centred.
Measurement errors can arise if the tube is not held in a vertical position, and measurements might be
invalid due to contact of the rebounding ball with the inner surface of the tube. It is therefore important
to use a spirit level or similar device to ensure that the tube is mounted at right angles to the rigid
baseplate, and that the baseplate itself is horizontal.
ISO 8307:2018(E)
Dimensions in millimetres
Key
1 magnet or
...
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