EN 17679:2022

Plastics - Plastic films - Determination of tear resistance using a trapezoidal test specimen with incision

This document specifies a method of determining the tear resistance of a plastic film under specified conditions. It is applicable to products that, because of their flexibility, do not tear when clamped between the grips of a tensile testing machine. The method makes it possible to compare samples of different products provided their thickness does not differ by more than 10 %.

Kunststoffe - Kunststofffolien - Bestimmung des Weiterreißwiderstands unter Verwendung eines trapezförmigen Probekörpers mit Einschnitt

Dieses Dokument legt ein Verfahren zur Bestimmung der Weitereißfestigkeit von einer Kunststofffolie unter festgelegten Bedingungen fest. Es ist anwendbar für Produkte, die aufgrund ihrer Flexibilität nicht reißen, wenn sie zwischen die Klemmen einer Zugprüfmaschine gespannt werden. Das Verfahren ermöglicht den Vergleich von Proben unterschiedlicher Produkte unter der Voraussetzung, dass sich deren Dicke um nicht mehr als 10 % unterscheidet.

Plastiques - Films plastiques - Détermination de la résistance au déchirement sur éprouvettes trapézoïdales avec incision

Le présent document spécifie une méthode permettant de déterminer la résistance au déchirement d’un film plastique dans des conditions spécifiées. Il est applicable aux produits qui, en raison de leur flexibilité, ne se déchirent pas lorsqu’ils sont serrés dans les mors d’une machine d’essai de traction. La méthode permet de comparer des échantillons de produits différents à condition que leur épaisseur ne diffère pas de plus de 10 %.

Polimerni materiali - Plastične folije - Ugotavljanje odpornosti proti trganju z zarezovanjem trapezoidnega preskušanca

Ta dokument določa metodo za ugotavljanje odpornosti plastične folije proti trganju pod določenimi pogoji. Uporablja se za izdelke, ki se zaradi svoje prožnosti ne raztrgajo, ko jih vpnemo med ročaje stroja za natezno preskušanje. Metoda omogoča primerjavo vzorcev različnih izdelkov, če se njihova debelina ne razlikuje za več kot 10 %.

General Information

• Status: Published
• Publication Date: 28-Jun-2022
• Withdrawal Date: 30-Dec-2022
• ICS: 83.140.10 - Films and sheets
• Technical Committee: CEN/TC 249 - Plastics
• Drafting Committee: CEN/TC 249 - Plastics
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 29-Jun-2022
• Due Date: 12-Sep-2022
• Completion Date: 29-Jun-2022
• Ref Project: SIST EN 17679:2022 - Plastics - Plastic films - Determination of tear resistance using a trapezoidal test specimen with incision

Overview

EN 17679:2022 is a European standard established by CEN for the determination of tear resistance in plastic films using a trapezoidal test specimen with an incision. This method is specifically designed for flexible plastic films that do not tear when clamped between grips of conventional tensile testing machines. It offers a standardized approach to evaluate and compare the tear resistance of different plastic film products, with an emphasis on samples whose thickness differs by no more than 10%. The standard ensures reliable, reproducible results under controlled conditions, enhancing quality control, material specification, and product development in the plastics industry.

Key Topics

• Scope and Applicability
  EN 17679:2022 applies to flexible plastic films unable to be tested by traditional tensile grips due to their resistance to tearing. It is suitable for various plastic films used across industries where tear resistance is critical.

• Test Specimen and Preparation
  Specimens have a trapezoidal shape with a defined incision, cut parallel and transversal to the production (machine) direction. The use of a template ensures accurate specimen dimensions and incision placement.

• Testing Conditions
  Specimens are conditioned for 24 hours in standard atmospheres per EN ISO 291. The tear test is performed at a speed of 100 ±10 mm/min, using a tensile testing machine compliant with EN ISO 7500-1 requirements.

• Measurement and Evaluation
  Thickness is measured at five points near the incision according to ISO 4593. Tear resistance is calculated as the ratio of maximum tear force to specimen thickness, reported in newtons per millimeter (N/mm).

• Test Reporting Requirements
  Detailed test reports must include product identification, specimen thickness, tear resistance values (individual and average), test direction relative to the machine direction, and any deviations or observations during the test.

• In-plane Stress Representation
  Unlike traditional tear tests that impose out-of-plane forces, this method better simulates in-plane stresses experienced by plastic films in real-world applications like membrane structures.

Applications

• Quality Control in Film Manufacturing
  Manufacturers can use EN 17679:2022 to routinely assess tear resistance during production to ensure consistency and compliance with product specifications.

• Material Comparison and Specification
  Designers and engineers can compare the tear resistance of different films, selecting appropriate materials for packaging, industrial membranes, or flexible coverings, especially where mechanical durability is essential.

• Research and Development
  R&D teams can apply this method to evaluate new polymer formulations, coatings, or multilayer films, optimizing mechanical properties for specific applications.

• Structural and Technical Films
  The method aids in assessing films used in architectural membranes, protective coverings, or flexible components where tear resistance under in-plane stress is critical.

Related Standards

• EN ISO 291 – Standard atmospheres for conditioning and testing plastics
• EN ISO 527-1 – General principles for determination of tensile properties of plastics
• EN ISO 7500-1 – Calibration and verification of tensile testing machines
• ISO 4593 – Determination of plastic film thickness by mechanical scanning
• EN ISO 6383-1 – Traditional tear resistance test for films using trouser tear method
• ISO 34-1 – Tear strength testing for rubber materials, including angle and crescent tests
• DIN 53363 – Predecessor method for trapezoidal specimen tear test in plastic films

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Utilizing EN 17679:2022 enables precise characterization of plastic film tear resistance, supporting enhanced reliability and performance in diverse plastic film applications. This international standard facilitates better communication of mechanical properties across manufacturers, suppliers, and end-users in the plastics sector.

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2022
Polimerni materiali - Plastične folije - Ugotavljanje odpornosti proti trganju z
zarezovanjem trapezoidnega preskušanca
Plastics - Plastic films - Determination of tear resistance using a trapezoidal test
specimen with incision
Prüfung von Kunststoff-Folien - Weiterreißversuch an trapezförmigen Proben mit
Einschnitt
Plastiques - Films plastiques - Détermination de la résistance au déchirement sur
éprouvettes trapézoïdales avec incision
Ta slovenski standard je istoveten z: EN 17679:2022
ICS:
83.140.10 Filmi in folije Films and sheets
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 17679
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2022
EUROPÄISCHE NORM
ICS 83.140.10
English Version
Plastics - Plastic films - Determination of tear resistance
using a trapezoidal test specimen with incision
Plastiques - Films plastiques - Détermination de la Kunststoffe - Kunststofffolien - Bestimmung des
résistance au déchirement sur éprouvettes Weiterreißwiderstands unter Verwendung eines
trapézoïdales avec incision trapezförmigen Probekörpers mit Einschnitt
This European Standard was approved by CEN on 22 May 2022.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

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

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 17679:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Specimens . 5
4.1 Sampling and specimen preparation . 5
4.2 Number of specimens . 6
5 Apparatus . 6
6 Procedure . 6
7 Evaluation . 7
8 Test report . 7
Annex A (informative) Explanatory notes . 8
Bibliography . 9

European foreword
This document (EN 17679:2022) has been prepared by 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 2022, and conflicting national standards
shall be withdrawn at the latest by December 2022.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document is based on DIN 53363:2003-10.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
1 Scope
This document specifies a method of determining the tear resistance of a plastic film under specified
conditions. It is applicable to products that, because of their flexibility, do not tear when clamped
between the grips of a tensile testing machin
...