SIST EN ISO 20568-1:2017

Plastics - Fluoropolymer dispersions and moulding and extrusion materials - Part 1: Designation system and basis for specifications (ISO 20568-1:2017)

This document establishes a system of designation for fluoropolymer materials, which may be used as
the basis for specifications.
The various types of fluoropolymer are differentiated from each other by a classification system based
on appropriate levels of the designatory properties and on information about the intended application
and/or method of processing, important properties, additives, colorants, fillers and reinforcing
materials.
For polytetrafluoroethylene (PTFE)
For PTFE granular moulding and ram extrusion materials, and for PTFE resin produced from
coagulation of dispersion:
— standard specific gravity (SSG)
— bulk density
— particle size
For aqueous dispersion of PTFE
— PTFE percentage in dispersion
— surfactant percentage in dispersion
— surfactant tolerance level
For melt processable resins
For CPT, ECTFE, EFEP, ETFE, FEP, PFA, PVDF, PVF, VDF/CTFE, VDF/HFP, VDF/TFE, VDF/TFE/HFP
— melting-peak temperature
— melt mass-flow rate
For PCTFE
— zero-strength time (ZST)
For TFE/PDD
— glass transition temperature (Tg)
For aqueous dispersion of melt processable resins (ETFE, FEP, PFA, PVDF, PVF, VDF/CTFE,
VDF/HFP, VDF/TFE, VDF/TFE/HFP)
— polymer percentage in dispersion
— surfactant percentage in dispersion
— surfactant tolerance level
The designation system is applicable to all fluoropolymers and blends. It applies to unmodified materials
ready for normal use and materials modified, for example, by colorants, additives, fillers, reinforcing
materials and polymer modifiers.
It is not intended to imply that materials having the same designation give necessarily the same
performance. This document does not provide engineering data, performance data or data on processing
conditions which may be required to specify a material. If such additional properties are required, they
are intended to be determined in accordance with the test methods specified in ISO 20568-2, if suitable.
In order to specify a thermoplastic material for a particular specification, the requirements are to be
given in data block 5 (see 4.1).

Kunststoffe - Fluorpolymerdispersionen, Formmassen und Extrusionsmaterialien - Teil 1: Bezeichnungssystem und Basis für Spezifikationen (ISO 20568-1:2017)

Dieses Dokument legt ein Bezeichnungssystem für Fluorpolymere fest, das als Grundlage für Spezifikationen verwendet werden kann.
Die verschiedenen Typen von Fluorpolymeren werden mit Hilfe eines Einteilungssystems voneinander unterschieden, das auf geeigneten Wertebereichen der kennzeichnenden Eigenschaften und auf Informationen über die vorgesehene Anwendung und/oder Verarbeitungsverfahren, wichtige Eigen-schaften, Zusatzstoffe, Farbstoffe, Füll- und Verstärkungsstoffe, beruht.

Plastiques - Polymère fluoré: dispersions et matériaux pour moulage et extrusion - Partie 1 : Système de désignation et base de spécification (ISO 20568-1:2017)

ISO 20568-1:2017 établit un système de désignation des matériaux polymères fluorés qui peut être utilisé comme base pour les spécifications.
Les types de polymères fluorés sont différenciés les uns des autres par un système de classification fondé sur des niveaux appropriés des propriétés de désignation et sur des informations sur l'application prévue et/ou la méthode de mise en ?uvre, les propriétés importantes, les additifs, les colorants, les charges et les matériaux de renfort.

Polimerni materiali - Disperzije in materiali za oblikovanje in ekstrudiranje na osnovi fluoropolimerov - 1. del: Sistem označevanja in podlage za specifikacije (ISO 20568-1:2017)

Ta dokument določa sistem označevanja materialov iz fluoropolimernih materialov, ki jih je mogoče uporabiti kot podlago za specifikacije.
Različne vrste fluoropolimerov se ločujejo glede na sistem razvrščanja, ki temelji na ustreznih ravneh označevalnih lastnostih in na informacijah o načrtovani uporabi in/ali metodi obdelave, pomembnih lastnostih, aditivih, barvilih, polnilih ter materialih za ojačanje.
Za politetrafluoroetilen (PTFE)
Za materiale za oblikovanje in ekstrudiranje na osnovi PTFE in za smole PTFE, pridobljene s koagulacijo disperzije:
– standardna specifična težnost (SSG)
– prostorninska gostota
– velikost zrn
Za vodne disperzije PTFE
– odstotek PTFE v disperziji
– odstotek površinsko aktivnih snovi v disperziji
– stopnja tolerance površinsko aktivnih snovi
Za smole, ki se obdelujejo s taljenjem
Za CPT, ECTFE, EFEP, ETFE, FEP, PFA, PVDF, PVF, VDF/CTFE, VDF/HFP, VDF/TFE, VDF/TFE/HFP
– temperatura tališča
– prostorninski pretok taline
Za PCTFE
– čas ničelne trdnosti (ZST)
Za TFE/PDD
– temperaturna prehodnost stekla (Tg)
Za vodne disperzije smol, ki se obdelujejo s taljenjem (ETFE, FEP, PFA, PVDF, PVF, VDF/CTFE,
VDF/HFP, VDF/TFE, VDF/TFE/HFP)
– odstotek polimera v disperziji
– odstotek površinsko aktivnih snovi v disperziji
– stopnja tolerance površinsko aktivnih snovi
Sistem označevanja se uporablja za vse fluoropolimere in mešanice. Uporablja se za nespremenjene materiale, pripravljene za običajno uporabo, in materiale, ki so spremenjeni na primer z barvili, aditivi, polnili, armirnimi materiali in modifikatorji polimerov.
Materiali z enako oznako nimajo nujno tudi enakih lastnosti. Ta dokument ne podaja inženirskih podatkov, podatkov o delovanju ali podatkov o pogojih obdelave, ki so morda potrebni za določitev materiala. Če so take dodatne lastnosti zahtevane, se določijo v skladu s preskusnimi metodami iz standarda ISO 20568-2, če je to primerno.
Za namene določitve plastomernega materiala za določeno specifikacijo, je treba v podatkovnem bloku 5 navesti dodatne zahteve (glej točko 4.1).

General Information

• Status: Published
• Public Enquiry End Date: 04-Aug-2015
• Publication Date: 12-Jul-2017
• ICS: 83.080.20 - Thermoplastic materials
• Technical Committee: IPMA - Polimer materials and products
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 14-Jun-2017
• Due Date: 19-Aug-2017
• Completion Date: 13-Jul-2017
• Ref Project: EN ISO 20568-1:2017 - Plastics - Fluoropolymer dispersions and moulding and extrusion materials - Part 1: Designation system and basis for specifications (ISO 20568-1:2017)

Relations

• Revised: SIST EN ISO 12086-1:2006/AC:2008 - Plastics - Fluoropolymer dispersions and moulding and extrusion materials - Part 1: Designation system and basis for specifications (ISO 12086-1:2006/Cor 1:2006)
• Effective Date: 01-Jul-2015
• Replaces: SIST EN ISO 12086-1:2006 - Plastics - Fluoropolymer dispersions and moulding and extrusion materials - Part 1: Designation system and basis for specifications (ISO 12086-1:2006)
• Effective Date: 14-Jun-2017
• Replaces: SIST EN ISO 12086-1:2006/AC:2008 - Plastics - Fluoropolymer dispersions and moulding and extrusion materials - Part 1: Designation system and basis for specifications (ISO 12086-1:2006/Cor 1:2006)
• Effective Date: 14-Jun-2017
• Replaces: SIST EN ISO 12086-1:2006 - Plastics - Fluoropolymer dispersions and moulding and extrusion materials - Part 1: Designation system and basis for specifications (ISO 12086-1:2006)
• Effective Date: 08-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 20568-1:2017
01-september-2017
1DGRPHãþD
SIST EN ISO 12086-1:2006
SIST EN ISO 12086-1:2006/AC:2008
3ROLPHUQLPDWHULDOL'LVSHU]LMHLQPDWHULDOL]DREOLNRYDQMHLQHNVWUXGLUDQMHQD
RVQRYLIOXRURSROLPHURYGHO6LVWHPR]QDþHYDQMDLQSRGODJH]DVSHFLILNDFLMH
,62
Plastics - Fluoropolymer dispersions and moulding and extrusion materials - Part 1:
Designation system and basis for specifications (ISO 20568-1:2017)
Kunststoffe - Fluorpolymerdispersionen, Formmassen und Extrusionsmaterialien - Teil 1:
Bezeichnungssystem und Basis für Spezifikationen (ISO 20568-1:2017)
Plastiques - Polymère fluoré: dispersions et matériaux pour moulage et extrusion - Partie
1 : Système de désignation et base de spécification (ISO 20568-1:2017)
Ta slovenski standard je istoveten z: EN ISO 20568-1:2017
ICS:
83.080.20 Plastomeri Thermoplastic materials
SIST EN ISO 20568-1:2017 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 20568-1:2017

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SIST EN ISO 20568-1:2017


EN ISO 20568-1
EUROPEAN STANDARD

NORME EUROPÉENNE

June 2017
EUROPÄISCHE NORM
ICS 83.080.20 Supersedes EN ISO 12086-1:2006
English Version

Plastics - Fluoropolymer dispersions and moulding and
extrusion materials - Part 1: Designation system and basis
for specifications (ISO 20568-1:2017)
Plastiques - Polymères fluorés: dispersions et Kunststoffe - Fluorpolymerdispersionen, Formmassen
matériaux pour moulage et extrusion - Partie 1: und Extrusionsmaterialien - Teil 1:
Système de désignation et base de spécification (ISO Bezeichnungssystem und Basis für Spezifikationen
20568-1:2017) (ISO 20568-1:2017)
This European Standard was approved by CEN on 29 April 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: Avenue Marnix 17, B-1000 Brussels
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 20568-1:2017 E
worldwide for CEN national Members.

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SIST EN ISO 20568-1:2017
EN ISO 20568-1:2017 (E)
Contents Page
European foreword . 3
2

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SIST EN ISO 20568-1:2017
EN ISO 20568-1:2017 (E)
European foreword
This document (EN ISO 20568-1:2017) 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 December 2017, and conflicting national standards
shall be withdrawn at the latest by December 2017.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent
rights.
This document supersedes EN ISO 12086-1:2006.
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 20568-1:2017 has been approved by CEN as EN ISO 20568-1:2017 without any
modification.

3

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SIST EN ISO 20568-1:2017

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SIST EN ISO 20568-1:2017
INTERNATIONAL ISO
STANDARD 20568-1
First edition
2017-05
Plastics — Fluoropolymer dispersions
and moulding and extrusion
materials —
Part 1:
Designation system and basis for
specifications
Plastiques — Polymères fluorés: dispersions et matériaux pour
moulage et extrusion —
Partie 1: Système de désignation et base de spécification
Reference number
ISO 20568-1:2017(E)
©
ISO 2017

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SIST EN ISO 20568-1:2017
ISO 20568-1:2017(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

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SIST EN ISO 20568-1:2017
ISO 20568-1:2017(E)

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 2
3 Terms and definitions . 2
4 Designation and specification system . 3
4.1 General . 3
4.2 Data block 1 . 4
4.3 Data block 2 . 5
4.4 Data block 3 . 6
4.5 Data block 4 . 7
4.6 Data block 5 .12
5 Examples of designations .13
© ISO 2017 – All rights reserved iii

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SIST EN ISO 20568-1:2017
ISO 20568-1:2017(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: w w w . i s o .org/ iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 9,
Thermoplastic materials.
This first edition of ISO 20568-1 cancels and replaces ISO 12086-1:2006, which has been technically
revised to introduce a new designation system.
A list of all the parts in the ISO 20568 series can be found on the ISO website.
iv © ISO 2017 – All rights reserved

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SIST EN ISO 20568-1:2017
INTERNATIONAL STANDARD ISO 20568-1:2017(E)
Plastics — Fluoropolymer dispersions and moulding and
extrusion materials —
Part 1:
Designation system and basis for specifications
1 Scope
This document establishes a system of designation for fluoropolymer materials, which may be used as
the basis for specifications.
The various types of fluoropolymer are differentiated from each other by a classification system based
on appropriate levels of the designatory properties and on information about the intended application
and/or method of processing, important properties, additives, colorants, fillers and reinforcing
materials.
For polytetrafluoroethylene (PTFE)
For PTFE granular moulding and ram extrusion materials, and for PTFE resin produced from
coagulation of dispersion:
— standard specific gravity (SSG)
— bulk density
— particle size
For aqueous dispersion of PTFE
— PTFE percentage in dispersion
— surfactant percentage in dispersion
— surfactant tolerance level
For melt processable resins
For CPT, ECTFE, EFEP, ETFE, FEP, PFA, PVDF, PVF, VDF/CTFE, VDF/HFP, VDF/TFE, VDF/TFE/HFP
— melting-peak temperature
— melt mass-flow rate
For PCTFE
— zero-strength time (ZST)
For TFE/PDD
— glass transition temperature (T )
g
For aqueous dispersion of melt processable resins (ETFE, FEP, PFA, PVDF, PVF, VDF/CTFE,
VDF/HFP, VDF/TFE, VDF/TFE/HFP)
— polymer percentage in dispersion
— surfactant percentage in dispersion
© ISO 2017 – All rights reserved 1

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SIST EN ISO 20568-1:2017
ISO 20568-1:2017(E)

— surfactant tolerance level
The designation system is applicable to all fluoropolymers and blends. It applies to unmodified materials
ready for normal use and materials modified, for example, by colorants, additives, fillers, reinforcing
materials and polymer modifiers.
It is not intended to imply that materials having the same designation give necessarily the same
performance. This document does not provide engineering data, performance data or data on processing
conditions which may be required to specify a material. If such additional properties are required, they
are intended to be determined in accordance with the test methods specified in ISO 20568-2, if suitable.
In order to specify a thermoplastic material for a particular specification, the requirements are to be
given in data block 5 (see 4.1).
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 472, Plastics — Vocabulary
ISO 1043-1, Plastics — Symbols and abbreviated terms — Part 1: Basic polymers and their special
characteristics
ISO 1133-1, Plastics — Determination of the melt mass-flow rate (MFR) and melt volume-flow rate (MVR)
of thermoplastics — Part 1: Standard method
ISO 11357-2, Plastics — Differential scanning calorimetry (DSC) — Part 2: Determination of glass transition
temperature and glass transition step height
ISO 11357-3, Plastics — Differential scanning calorimetry (DSC) — Part 3: Determination of temperature
and enthalpy of melting and crystallization
ISO 20568-2, Plastics — Fluoropolymer dispersions and moulding and extrusion materials — Part 2:
Preparation of test specimens and determination of properties
ASTM D1430, Standard Classification System for Polychlorotrifluoroethylene (PCTFE) Plastics
ASTM D2116, Standard Specification for FEP-Fluorocarbon Molding and Extrusion Materials
ASTM D4441, Standard Specification for Aqueous Dispersions of Polytetrafluoroethylene
ASTM D4591, Standard Test Method for Determining Temperatures and Heats of Transitions of
Fluoropolymers by Differential Scanning Calorimetry
ASTM D4894, Standard Specification for Polytetrafluoroethylene (PTFE) Granular Molding and Ram
Extrusion Materials
ASTM D4895, Standard Specification for Polytetrafluoroethylene (PTFE) Resins Produced From Dispersion
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 472 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http:// www .electropedia .org/
— ISO Online browsing platform: available at http:// www .iso .org/ obp
2 © ISO 2017 – All rights reserved

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SIST EN ISO 20568-1:2017
ISO 20568-1:2017(E)

3.1
melt-processable
capable of being processed by, for example, injection molding, screw extrusion and other operations
typically used with thermoplastics
3.2
presintered resin
resin that has been treated thermally at or above the melting point of the resin at atmospheric pressure
without having been previously preformed
3.3
reprocessed plastic
material from the manufacture of semifinished forms of fluoropolymers that has been converted to a
form suitable for further use
3.4
sintering
thermal treatment during which the material is melted and recrystallized by cooling, with
coalescence occurring during the treatment
3.5
standard specific gravity
SSG
specific gravity of a specimen of PTFE material preformed, sintered and cooled through the
crystallization point at a rate of 1 °C per minute in accordance with the appropriate sintering schedule
as described in ISO 20568-2
Note 1 to entry: The SSG of unmodified PTFE is inversely related to its molecular mass.
3.6
zero-strength time
ZST
measure of the relative molecular mass of PCTFE
Note 1 to entry: The ZST of PCTFE is proportionally related to its molecular mass.
4 Designation and specification system
4.1 General
The designation system for thermoplastics is based on the following standard pattern:
Designation
Identity block
Individual-item block
International
Description block
Standard
Data Data Data Data Data
(optional)
number
block block block block block
block
1 2 3 4 5
The designation consists of an optional description block, reading “Thermoplastics”, and an identity
block comprising the International Standard number and an individual-item block. For unambiguous
designation, the individual-item block is subdivided into five data blocks comprising the following
information:
— Data block 1: Identification of the plastic by its abbreviated term for the fluoropolymer as listed in
Table 1 and information about the composition of the polymer (see Table 1 and Table 2).
— Data block 2: Fillers or reinforcing materials and their nominal content (see 4.3).
© ISO 2017 – All rights reserved 3

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SIST EN ISO 20568-1:2017
ISO 20568-1:2017(E)

— Data block 3: Position 1: Intended application and/or method of processing (see 4.4).
Positions 2 to 8: Important properties, additives and supplementary information (see 4.4).
— Data block 4: Designatory properties (see 4.5).
— Data block 5: For the purpose of specifications, the fifth data block contains appropriate information
(see 4.6).
The first character of the individual-item block shall be a hyphen. The data blocks shall be separated
from each other by a comma.
If a data block is not used, this shall be indicated by doubling the separation sign, i.e. by two commas (,,).
NOTE Data blocks 1 and 2 together form the part marking symbol.
4.2 Data block 1
In this data block, fluoropolymers are identified by the abbreviated term in accordance with ISO 1043-1
(supplemented by the abbreviated term listed in Table 1) and, after a hyphen, a symbol indicating the
additional information as specified in Table 2.
Table 1 — Symbols indicating the chemical structure of fluoropolymers materials in data block 1
Meaning of code-letter
CPT chlorotrifluoroethylene-perfluoroalkoxy-tetrafluoroethylene copolymer
ECTFE ethylene-chlorotrifluoroethylene copolymer
EFEP ethylene-tetrafluoroethylene-hexafluoropropene copolymer
ETFE ethylene-tetrafluoroethylene copolymer
FEP perfluoro(ethylene-propene) copolymer
PCTFE polychlorotrifluoroethylene
PFA perfluoro(alkoxy alkane)
PTFE polytetrafluoroethylene
PVDF poly(vinylidene fluoride)
PVF poly(vinyl fluoride)
TFE/PDD tetrafluoroethylene-perfluorodioxole copolymer
VDF/CTFE vinylidene fluoride-chlorotrifluoroethylene copolymer
VDF/HFP vinylidene fluoride-hexafluoropropene copolymer
VDF/TFE vinylidene fluoride-tetrafluoroethylene copolymer
VDF/TFE/HFP vinylidene fluoride-tetrafluoroethylene-hexafluoropropene copolymer
Table 2 — Meaning of code letter, when used, for additional information in data block 1
Code-letter Meaning of code-letter
A Modified
D Dispersion
E Emulsion polymer
F Filler resin (additive resin)
H Homopolymer
K Copolymer
S Suspension polymer
SS Presintered suspension polymer
4 © ISO 2017 – All rights reserved

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SIST EN ISO 20568-1:2017
ISO 20568-1:2017(E)

Table 2 (continued)
Code-letter Meaning of co
...

SLOVENSKI STANDARD
oSIST prEN ISO 20568-1:2015
01-julij-2015
3ROLPHUQLPDWHULDOL'LVSHU]LMHLQPDWHULDOL]DREOLNRYDQMHLQHNVWUXGLUDQMHQD
RVQRYLIOXRURSROLPHURYGHO6LVWHPR]QDþHYDQMDLQSRGODJH]DVSHFLILNDFLMH
,62',6
Plastics - Fluoropolymer dispersions and moulding and extrusion materials - Part 1:
Designation system and basis for specifications (ISO/DIS 20568-1:2015)
Kunststoffe - Fluorpolymerdispersionen, Formmassen und Extrusionsmaterialien - Teil 1:
Bezeichnungssystem und Basis für Spezifikationen (ISO/DIS 20568-1:2015)
Plastiques - Polymère fluoré: dispersions et matériaux pour moulage et extrusion - Partie
1 : Système de désignation et base de spécification (ISO/DIS 20568-1:2015)
Ta slovenski standard je istoveten z: prEN ISO 20568-1
ICS:
83.080.20 Plastomeri Thermoplastic materials
oSIST prEN ISO 20568-1:2015 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN ISO 20568-1:2015

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oSIST prEN ISO 20568-1:2015
DRAFT INTERNATIONAL STANDARD
ISO/DIS 20568-1
ISO/TC 61/SC 9 Secretariat: KATS
Voting begins on: Voting terminates on:
2015-05-21 2015-08-21
Plastics — Fluoropolymer dispersion and moulding and
extrusion materials —
Part 1:
Designation system and basis for specifications
Plastiques — Polymère fluoré: dispersions et matériaux pour moulage et extrusion —
Partie 1: Système de désignation et base de spécification
ICS: 83.080.20
ISO/CEN PARALLEL PROCESSING
This draft has been developed within the European Committee for Standardization
(CEN), and processed under the CEN lead mode of collaboration as defined in the
Vienna Agreement.
This draft is hereby submitted to the ISO member bodies and to the CEN member
bodies for a parallel five month enquiry.
Should this draft be accepted, a final draft, established on the basis of comments
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ISO/DIS 20568-1:2015(E)

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oSIST prEN ISO 20568-1:2015
ISO DIS 20568-1
Contents                                                  Page
Foreword ………………………………………………………………………………………………………… iv
1   Scope ………………………………………………………………………………………………………. 1

2   Normative reference ……………………………………………………………………………………… 2

3   Designation and specification system ………………………………………………………………. 3
3.1  General ……………………………………………………………………………………………………. 3
3.2  Data block 1 ………………………………………………………………………………………………… 4
3.3  Data block 2 ………………………………………………………………………………………………… 6
3.4  Data block 3 ………………………………………………………………………………………………… 6
3.5 Data block 4 ………………………………………………………………………………………………… 8
3.6  Data block 5 …………………………………………………………………………………………………14
4   Example of a designation …………………………………………………………………………………14









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ISO DIS 20568-1
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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. 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.
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.
ISO 20568-1 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 9, Thermoplastic
materials.
ISO 20568 consists of the following parts, under the general title Plastics — Fluoropolymer dispersions and
moulding and extrusion materials:
 Part 1: Designation system and basis for specifications
 Part 2: Preparation of test specimens and determination of properties

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oSIST prEN ISO 20568-1:2015
DRAFT INTERNATIONAL STANDARD ISO DIS 20568-1

Plastics — Fluoropolymer dispersions and moulding and
extrusion materials —
Part 1:
Designation system and basis for specifications
1 Scope
1.1 This part of ISO 20568 establishes a system of designation for fluoropolymer materials, which
may be used as the basis for specifications.
1.2 The various types of fluoropolymer are differentiated from each other by a classification system
based on appropriate levels of the designatory properties.

1.2.1 For PTFE
1.2.1.1 For polytetrafluoroethylene (PTFE) granular moulding and ram extrusion materials, and for
polytetrafluoroethylene (PTFE) resin produced from coagulation of dispersion
a) Standard specific gravity (SSG)
b) Bulk density
c) Particle size
1.2.1.2 For aqueous dispersion of polytetrafluoroethylene (PTFE)
a) PTFE percentage in dispersion
b) Surfactant percentage in dispersion
c) Surfactant tolerance level
1.2.2 For melt processable resins
1.2.2.1 For CPT, ECTFE, EFEP, ETFE, FEP, PFA, PVDF, PVF,
VDF/CTFE, VDF/HFP, VDF/TFE, VDF/TFE/HFP

a) melting-peak temperature

b) Melt mass-flow rate
1.2.2.2 For PCTFE

a) zero-strength time (ZST)

1.2.2.3 For TFE/PDD

a) Glass transition temperature (T )
g
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1.2.2.4 For aqueous dispersion of melt processable resins ( ETFE, FEP, PFA, PVDF, PVF,
      VDF/CTFE, VDF/HFP, VDF/TFE, VDF/TFE/HFP)

      a) Polymer percentage in dispersion
      b) Surfactant percentage in dispersion
      c) Surfactant tolerance level
and on information about the intended application and/or method of processing, important
properties additives, colorants, fillers and reinforcing materials.

1.3 The designation system is applicable to all fluoropolymers and blends. It applies to unmodified
materials ready for normal use and materials modified, for example, by colorants, additives, fillers,
reinforcing materials, and polymer modifiers
1.4 One should not assume that materials having the same designation give the same performance.
This part of ISO 20568 does not provide engineering data, performance data or data on processing
conditions which may be required to specify a material. If such additional properties are required, they
shall be determined in accordance with the test methods specified in part 2 of this International
Standard, if suitable.
1.5 In order to designate a thermoplastic material to meet particle specifications, the requirements are
to be given in data block 5 (see 3.1).
2 Normative references
The following referenced documents are indispensable for the application 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 472, Plastics — Vocabulary
ISO 1043-1, Plastics — Symbols and abbreviated terms — Part 1: Basic polymers and their special
characteristics
ISO 1043-2, Plastics — Symbols and abbreviated terms — Part 2: Fillers and reinforcing materials
ISO 1133-1, Plastics — Determination of the melt mass-flow rate (MFR) and the melt volume-flow rate
(MVR) of thermoplastics — Part 1: Standard method
ISO 20568-2, Plastics — Fluoropolymer dispersions and moulding and extrusion materials — Part 2:
Preparation of test specimens and determination of properties
ASTM D 1430, Standard Classification System for Polychlorotrifluoroethylene (PCTFE) Plastics
ASTM D 2116, Specification for FEP fluorocarbon molding and extrusion materials.
ASTM D 3418, Standard Test Method for Transition Temperatures of Polymers by Differential Scanning
Calorimetry
ASTM D 4441, Specification for aqueous dispersions of polytetrafluoroethylene.
ASTM D 4591, Standard Test Method for Determining Temperatures and Heats of Transitions of
Fluoropolymers by Differential Scanning Calorimetry
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ISO DIS 20568-1
ASTM D 4894, Specification for polytetrafluoroethylene (PTFE) granular molding and ram extrusion
materials.
ASTM D 4895, Specification for polytetrafluoroethylene (PTFE) resins produced from dispersion.

2.1 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 472 and the following terms
and definitions apply.
2.1.1
melt-processable
capable of being processed by, for example, injection moulding, screw extrusion and other operations
typically used with thermoplastics
2.1.2
presintered resin
resin that has been treated thermally at or above the melting point of the resin at atmospheric pressure
without having been previously preformed
2.1.3
reprocessed plastic
material from the manufacture of semifinished forms of fluoropolymers that has been converted to a
form suitable for further use
2.1.4
sintering
PTFEthermal treatment during which the material is melted and recrystallized by cooling, with
coalescence occurring during the treatment
2.1.5
standard specific gravity
SSG
specific gravity of a specimen of PTFE material preformed, sintered and cooled through the
crystallization point at a rate of 1 °C per minute in accordance with the appropriate sintering schedule
as described in ISO 20568-2
NOTE The SSG of unmodified PTFE is inversely related to its molecular mass.
2.1.6
zero-strength time
ZST
measure of the relative molecular mass of PCTFE.
NOTE The ZST of PCTFE is proportionally related to its molecular mass.
3 Designation and specification system
3.1 General
The designation system for thermoplastics is based on the following standard pattern:
Designation
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Identity block
Individual-item block
International
Description block
Standard
(optional)
Data Data Data Data Data
number
block block block block block
block
1 2 3 4 5

The designation consists of an optional description block, reading “Thermoplastics”, and an identity
block comprising the International Standard number and an individual-item block. For unambiguous
designation, the individual-item block is subdivided into five data blocks comprising the following
information:
 Data block 1: Identification of the plastic by its abbreviated term for the fluoropolymer as listed in
Table 1 and information about the composition of the polymer (see Table 1 and
Table 2).
 Data block 2: Fillers or reinforcing materials and their nominal content (see 3.3).
 Data block 3: Position 1: Intended application and/or method of processing (see 3.4).
Positions 2 to 8: Important properties, additives and supplementary information (see
3.4).
 Data block 4: Designatory properties (see 3.5).
 Data block 5: For the purpose of specifications, the fifth data block contains appropriate
information (see 3.6)
The first character of the individual-item block shall be a hyphen. The data blocks shall be separated
from each other by a comma.
If a data block is not used, this shall be indicated by doubling the separation sign, i.e. by two commas
(,,).
NOTE: Data blocks 1 and 2 together form the part marking symbol.
3.2 Data block 1
In this data block, fluoropolymers are identified by the abbreviated term accordance with ISO 1043-1
(supplemented by the abbreviated term listed in Table1) and, after a hyphen , a symbol indicating the
additional information as specified in Table2.
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Table 1 - Symbols indicating the chemical structure of fluoropolymers materials in Data Block 1
Meaning of code-letter
CPT
chlorotrifluoroethylene-perfluoroalkoxy-tetrafluoroethylene copolymer
ECTFE ethylene-chlorotrifluoroethylene copolymer
EFEP ethylene-tetrafluoroethylene-hexafluoropropene copolymer
ETFE ethylene-tetrafluoroethylene copolymer
FEP
perfluoro(ethylene-propene) copolymer
PCTFE polychlorotrifluoroethylene
PFA perfluoro(alkoxy alkane)
PTFE polytetrafluoroethylene
PVDF poly(vinylidene fluoride)
PVF poly(vinyl fluoride)
TFE/PDD Tetrafluoroethylene-perfluorodioxole copolymer
VDF/CTFE vinylidene fluoride-chlorotrifluoroethylene copolymer
VDF/HFP vinylidene fluoride-hexafluoropropene copolymer
VDF/TFE vinylidene fluoride-tetrafluoroethylene copolymer
VDF/TFE/HFP vinylidene fluoride-tetrafluoroethylene-hexafluoropropene copolymer

Table 2 – Meaning of code letter, when used, for additional information in Data Block 1
Code-letter Meaning of code-letter
A Modified
D Dispersion
E Emulsion polymer
F
Filler resin (additive resin)
H Homopolymer
K Copolymer
S Suspension polymer
SS
Presintered suspension polymer
Z1 In-house-recovered material; out of specification/waste
Z2 Reprocessed; byproduct from processing
Z3
Postconsumer material

Blends
Blends can be made from materials mentioned in both tables and/or other polymers (ISO 1043). For
polymer blends or alloys use the abbreviated terms for the basic polymers, with the main component in
first place followed by the other components in descending order according to their mass fractions,
separated by a plus sign and no space before or after the plus sign.
EXAMPLE A blend of FEP and PFA is designated : FEP+PFA
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3.3 Data block 2
In this data block, the type of filler and/or reinforcing material is represented by a single code-letter in
position 1 and its physical form by a second code-letter in position 2, the code-letters being as specified
in Table 3. Subsequently (without a space), the actual content by mass percent shall be given by a two
figure number in position 3.
Table 3 - Symbols for fillers and reinforcing materials and form or structure in data block 2
a
Code-letter Material Code-letter Form or structure
B Boron B Bead, spheres, balls
C Carbon C Chips, cuttings
C1 Coke D Powder
C2 F
Partially graphitized carbon Fibre
C-G Graphite G Ground
E Clay H Whiskers
G Glass K Knitted fabric
K L
Calcium carbonate Layer
M Mineral, metal M Mat (thick)
M1 Aluminium oxide N Non-woven and thin
M2 Bronze P Paper
M3 S
Calcium fluoride Rovings
M4 Molybdenum disulfide T Scales, flakes
M5 Stainless steel V Cord
P Mica W Veneer
Q X
Silica Not specified
R Aramid Y Yarn
S Synthetic, organic Z Others
S-X X is the abbreviated term for a polymer used as the filler
T
Talcum
X Not specified
Z1 In-house-recovered material
Z2 Reprocessed material
X3
Postconsumer material
a
The materials may be further defined, for example by their chemical symbols or by additional symbols defined in the
relevant International Standard.

Mixtures of materials or forms may be indicated by combining the relevant codes using the sign “+” and
placing the whole between parentheses. For examples, a mixture of 25% glass fibres (GF) and 8%
mineral powder (MD) would be indicated by (GF25+MD8).

3.4 Data block 3
In this data block, information about intended application and/ or method of processing is given in
position 1 and Information about important properties, additives and colour in information in positions 2
to 8. The code-letters are specified in Table 4. If information is presented in positions 2 to 8 and no
specific information is given in position 1, the letter X (no indication) shall be inserted in position 1.
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Table 4 — Code-letters used in data block 3
Intended application or method of processing Essential properties, additives or other information
Code-letter Position 1 Code-letter Positions 2 to 8
A Adhesives C Coloured
B Blow moulding D Powder
B1 Extrusion blow moulding D1 Dry blend
B2 D2
Injection blow moulding Free-flowing
C Calendering D3 Not free-flowing
E Extrusion E Expandable
F Filled compounds F Special burning characteristics
G General use F1 Oxygen index  95 %
H Coating F2 Flame retarded
H1 F4
Powder coating Reduced smoke emission
H2 Dip coating G Granules
H3 Wet coating G1 Pellets
H4 Impregnation G2 Lentils
H5 G3
Spray coating Beads
K Cable and wire coating H1 Stabilized against radiation
L Monofilament extrusion L Light and weather stabilized
M Moulding M Nucleated
M1 M1
Injection moulding Modified by comonomer
M2 Transfer moulding N Natural (no colour added)
P Paste extrusion N1 Suitable for food contact
Q Compression moulding N2 High purity
Q1 P
Automatic moulding Impact modifiied
Q2 Isostatic moulding R Mould release agent
R Rotational moulding S Lubricated
S Sintering S1 External lubrication
T T
Tape manufacture Transparent
T1 Skived tape or film T1 Translucent
T2 Unsintered tape or film T2 Opaque
T3 Expanded t
...