SIST EN ISO 294-5:2018

Plastics - Injection moulding of test specimens of thermoplastic materials - Part 5: Preparation of standard specimens for investigating anisotropy (ISO 294-5:2017)

This document specifies a mould (designated the type F ISO mould) for the injection moulding of
plates with a preferred size of 80 mm × 120 mm and a minimum size of 80 mm × ≥90 mm and with
a preferred thickness of 2 mm for single-point and multi-point data acquisition. It has been found to
provide the maximum anisotropic properties, with only a slight sensitivity to the rate of injection.
Whenever possible, a two cavity mould is intended to be used. For the design of plastic parts, this will
provide upper and lower bounds for the tensile properties. Matching the plate thickness to a given part
thickness is not a suitable criterion because of the effect of mould filling rate and part geometry on
anisotropy.
Investigation of the anisotropy of materials is a special procedure intended to provide guidance in the
design of mouldings for end-use applications and is not intended as a quality control tool.
In the injection moulding of thermoplastic materials, the flow of molten polymer can influence the
orientation of fillers such as fibreglass or the orientation of polymer chains, resulting in anisotropic
behaviour.
For the purposes of this document, the flow direction is defined as the direction from the gate to the
far end of the mould cavity and the cross direction as the direction perpendicular to the flow direction.
The type F mould is not intended to replace the type D mould used to determine the moulding shrinkage
of thermoplastics.

Kunststoffe - Spritzgießen von Probekörpern aus Thermoplasten - Teil 5: Herstellung von Standardprobekörpern zur Ermittlung der Anisotropie (ISO 294-5:2017)

Dieses Dokument legt ein Werkzeug fest (bezeichnet als ISO Werkzeug Typ F) zum Spritzgießen von Platten mit den bevorzugten Maßen von 80 mm × 120 mm und den kleinsten Maßen von 80 mm × ≥ 90 mm und einer bevorzugten Dicke von 2 mm für die Erfassung von Einpunkt- und Mehrpunktkennwerten, daher 2 mm. Es hat sich gezeigt, dass es die maximalen anisotropen Eigenschaften mit nur geringer Empfindlichkeit gegenüber der Einspritzgeschwindigkeit bietet. Wenn möglich, sollte immer ein Zweifachwerkzeug benutzt werden. Bei der Gestaltung von Kunststoffbauteilen bietet das die Ober  und Untergrenzen für die Zugeigenschaften. Die Anpassung der Plattendicke an eine gegebene Bauteildicke ist wegen der Auswirkung der Werkzeug-Füllrate und der Bauteilgeometrie auf die Anisotropie kein geeignetes Kriterium.
Die Untersuchung der Anisotropie von Werkstoffen ist ein spezielles Verfahren, das vorgesehen ist, eine Orientierungshilfe bei der Gestaltung von Spritzgussformen für Endanwendungen zu bieten, und nicht als Werkzeug zur Qualitätssicherung bestimmt ist.
Beim Spritzgießen von Thermoplasten kann der Fluss des geschmolzenen Polymers die Ausrichtung von Füllstoffen, z. B. Glasfasern, oder die Ausrichtung von Polymerketten beeinträchtigen, was sich auf das anisotrope Verhalten auswirken kann.
Für die Anwendung dieses Dokumentes ist die Fließrichtung als die Richtung vom Anschnitt (Zulauf) bis zum äußersten Ende des Formnests und die Querrichtung als die Richtung senkrecht zur Fließrichtung festgelegt.
Das Werkzeug Typ F ist nicht dafür vorgesehen das Werkzeug Typ D zu ersetzen, das benutzt wird, um die Formteilschwindung von Thermoplasten zu ermitteln.

Plastiques - Moulage par injection des éprouvettes de matériaux thermoplastiques - Partie 5 : Préparation d'éprouvettes normalisées pour déterminer l'anisotropie (ISO 294-5:2017)

L'ISO 294-5 :2017 spécifie un moule (appelé moule ISO de type F) pour le moulage par injection de plaques avec des dimensions préférentielles de 80 mm × 120 mm et des dimensions minimales de 80 mm × ≥ 90 mm ayant une épaisseur préférentielle de 2 mm pour l'acquisition des caractéristiques intrinsèques en simples ou multipoints. Il s'est avéré qu'il apporte les propriétés anisotropes maximales, avec seulement une légère sensibilité à la vitesse d'injection. Un moule à deux empreintes doit être utilisé chaque fois que possible. Pour la conception des pièces en matière plastique, cela va apporter des limites inférieures et supérieures aux propriétés en traction. La correspondance entre l'épaisseur de la plaque et l'épaisseur d'une pièce donnée n'est pas un critère approprié à cause des effets de la vitesse de remplissage du moule et de la géométrie des pièces sur l'anisotropie.
La détermination de l'anisotropie des matériaux est un mode opératoire spécial destiné à fournir des lignes directrices lors de la conception des moulages pour des applications finales et n'est pas destiné à être utilisé comme outil de contrôle qualité.
Dans un thermoplastique moulé par injection, le flux du polymère fondu peut influer sur l'orientation des charges comme les fibres de verre ou sur l'orientation des chaînes de polymères. Il peut en découler un comportement anisotrope.
Pour l'ISO 294-5 :2017, la direction du flux est définie comme étant la direction allant du seuil jusqu'au fond de la cavité du moule, et la direction transversale est la direction perpendiculaire à la direction du flux.
Le moule de type F n'est pas destiné à remplacer le moule de type D utilisé pour la détermination du retrait au moulage des thermoplastiques.

Polimerni materiali - Vbrizgavanje plastomernih preskušancev - 5. del: Priprava standardnih preskušancev za preiskovanje anizotropije (ISO 294-5:2017)

Ta dokument določa kalup (označen kot kalup vrste F ISO) za vbrizgavanje plošč s prednostno velikostjo 80 mm × 120 mm in najmanjšo velikostjo 80 mm × ≥90 mm ter prednostno debelino 2 mm za eno- in večtočkovno pridobivanje podatkov. Ugotovljeno je bilo, da tak kalup zagotavlja najboljše anizotropne lastnosti in da je zelo malo občutljiv na hitrost vbrizgavanja.
Uporabljal naj bi se kalup z dvema vdolbinama, kadar koli je to mogoče. To ponuja zgornjo in spodnjo mejo nateznih lastnosti za zasnovo delov iz polimernih materialov. Ujemanje debeline plošče z debelino določenega dela ni primerno merilo zaradi učinka hitrosti polnjenja kalupa in geometrije dela na anizotropijo.
Raziskava anizotropije materialov je poseben postopek, namenjen za pripravo smernic pri zasnovi oblikovancev za končno uporabo in ni predviden kot orodje za nadzor kakovosti.
Pri vbrizgavanju plastomernih materialov lahko tok tekočega polimera vpliva na orientacijo polnil, kot so steklena vlakna, ali orientacijo polimernih verig, kar povzroča anizotropno vedenje.
Za namene tega dokumenta je smer toka določena kot smer od vrat do konca vlivne odprtine, prečna smer pa kot smer, ki je pravokotna na smer toka.
Kalup tipa F ni namenjen za uporabo kot nadomestek kalupa tipa D, ki se uporablja za ugotavljanje vlivnega krčenja polimernih materialov.

General Information

• Status: Published
• Public Enquiry End Date: 29-Sep-2015
• Publication Date: 09-Jan-2018
• ICS: 83.080.20 - Thermoplastic materials
• Technical Committee: IPMA - Polimer materials and products
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 27-Dec-2017
• Due Date: 03-Mar-2018
• Completion Date: 10-Jan-2018
• Ref Project: EN ISO 294-5:2017 - Plastics - Injection moulding of test specimens of thermoplastic materials - Part 5: Preparation of standard specimens for investigating anisotropy (ISO 294-5:2017)

Relations

• Revised: SIST EN ISO 294-5:2014 - Plastics - Injection moulding of test specimens of thermoplastic materials - Part 5: Preparation of standard specimens for investigating anisotropy (ISO 294-5:2011)
• Effective Date: 01-Sep-2015
• Replaces: SIST EN ISO 294-5:2014 - Plastics - Injection moulding of test specimens of thermoplastic materials - Part 5: Preparation of standard specimens for investigating anisotropy (ISO 294-5:2011)
• Effective Date: 20-Dec-2017

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 294-5:2018
01-marec-2018
1DGRPHãþD
SIST EN ISO 294-5:2014
Polimerni materiali - Vbrizgavanje plastomernih preskušancev - 5. del: Priprava
standardnih preskušancev za preiskovanje anizotropije (ISO 294-5:2017)
Plastics - Injection moulding of test specimens of thermoplastic materials - Part 5:
Preparation of standard specimens for investigating anisotropy (ISO 294-5:2017)
Kunststoffe - Spritzgießen von Probekörpern aus Thermoplasten - Teil 5: Herstellung von
Standardprobekörpern zur Ermittlung der Anisotropie (ISO 294-5:2017)
Plastiques - Moulage par injection des éprouvettes de matériaux thermoplastiques -
Partie 5 : Préparation d'éprouvettes normalisées pour déterminer l'anisotropie (ISO 294-
5:2017)
Ta slovenski standard je istoveten z: EN ISO 294-5:2017
ICS:
83.080.20 Plastomeri Thermoplastic materials
SIST EN ISO 294-5:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------

SIST EN ISO 294-5:2018

---------------------- Page: 2 ----------------------

SIST EN ISO 294-5:2018


EN ISO 294-5
EUROPEAN STANDARD

NORME EUROPÉENNE

December 2017
EUROPÄISCHE NORM
ICS 83.080.20 Supersedes EN ISO 294-5:2013
English Version

Plastics - Injection moulding of test specimens of
thermoplastic materials - Part 5: Preparation of standard
specimens for investigating anisotropy (ISO 294-5:2017)
Plastiques - Moulage par injection des éprouvettes de Kunststoffe - Spritzgießen von Probekörpern aus
matériaux thermoplastiques - Partie 5: Préparation Thermoplasten - Teil 5: Herstellung von
d'éprouvettes normalisées pour déterminer Standardprobekörpern zur Ermittlung der Anisotropie
l'anisotropie (ISO 294-5:2017) (ISO 294-5:2017)
This European Standard was approved by CEN on 27 October 2017.

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
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 294-5:2017 E
worldwide for CEN national Members.

---------------------- Page: 3 ----------------------

SIST EN ISO 294-5:2018
EN ISO 294-5:2017 (E)
Contents Page
European foreword . 3

2

---------------------- Page: 4 ----------------------

SIST EN ISO 294-5:2018
EN ISO 294-5:2017 (E)
European foreword
This document (EN ISO 294-5:2017) 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 June 2018, and conflicting national standards shall be
withdrawn at the latest by June 2018.
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 294-5:2013.
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 294-5:2017 has been approved by CEN as EN ISO 294-5:2017 without any modification.


3

---------------------- Page: 5 ----------------------

SIST EN ISO 294-5:2018

---------------------- Page: 6 ----------------------

SIST EN ISO 294-5:2018
INTERNATIONAL ISO
STANDARD 294-5
Third edition
2017-11
Plastics — Injection moulding of
test specimens of thermoplastic
materials —
Part 5:
Preparation of standard specimens for
investigating anisotropy
Plastiques — Moulage par injection des éprouvettes de matériaux
thermoplastiques —
Partie 5: Préparation d'éprouvettes normalisées pour déterminer
l'anisotropie
Reference number
ISO 294-5:2017(E)
©
ISO 2017

---------------------- Page: 7 ----------------------

SIST EN ISO 294-5:2018
ISO 294-5:2017(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2017, Published in Switzerland
All rights reserved. Unless otherwise specified, 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
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. [phone]
Fax [phone]
[e-mail]
www.iso.org
ii © ISO 2017 – All rights reserved

---------------------- Page: 8 ----------------------

SIST EN ISO 294-5:2018
ISO 294-5:2017(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Apparatus . 2
4.1 Type F ISO mould . 2
4.2 Injection-moulding machine . 4
5 Procedure. 4
5.1 Conditioning of material . 4
5.2 Injection moulding . 4
5.3 Preparation of test specimen . 4
6 Report on test specimen preparation . 4
Annex A (normative) Preparation of test specimens . 6
Bibliography . 7
© ISO 2017 – All rights reserved iii

---------------------- Page: 9 ----------------------

SIST EN ISO 294-5:2018
ISO 294-5:2017(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 61, Plastics, Subcommittee SC 9,
Thermoplastic materials.
This third edition cancels and replaces the second edition (ISO 294-5:2011), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— the size of the plate has been changed from 80 mm × 90 mm × 2 mm to 80 mm × ≥90 mm × 2 mm,
preferably 80 mm × 120 mm × 2 mm;
— the maximum mould-locking force in 4.2 has been recalculated.
A list of all parts in the ISO 294 series can be found on the ISO website.
iv © ISO 2017 – All rights reserved

---------------------- Page: 10 ----------------------

SIST EN ISO 294-5:2018
ISO 294-5:2017(E)

Introduction
Reinforced and self-reinforcing injection-mouldable thermoplastics are used in a wide variety of
applications, some of which can be safety-related. During the injection-moulding process, reinforcement
fibres can preferentially align with the flow of the molten material and not across the flow direction.
This preferential alignment causes an imbalance in the properties of the moulded thermoplastic so
that, in the flow direction, the alignment of the reinforcing fibres causes a higher strength and stiffness
than in the cross direction with fewer aligned fibres. This difference in properties is termed anisotropy
and i
...