ISO 7765-2:2022
(Main)Plastics film and sheeting — Determination of impact resistance by the free-falling dart method — Part 2: Instrumented puncture test
Plastics film and sheeting — Determination of impact resistance by the free-falling dart method — Part 2: Instrumented puncture test
This document specifies a test method for the determination of puncture impact properties of a plastic film using instruments for measuring force and deflection. It is applicable if a force-deflection or force-time diagram, recorded at nominally constant striker velocity, is required for detailed characterization of the impact behaviour. This test method is also required when a small number of test specimens are available, and the staircase method described in the ISO 7765-1 cannot be applied. The test method is applicable to films of up to 1 mm thickness and makes it possible to compare impact-penetration forces, biaxial deformabilities and energy-absorption capacities of films. Also, the transition region between brittle and tough behaviour of the film under the conditions of testing can be determined by varying the temperature or the penetration velocity or the relative humidity[1].
Film et feuille de plastiques — Détermination de la résistance au choc par la méthode par chute libre de projectile — Partie 2: Essai avec appareil de perforation
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Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 7765-2
Second edition
2022-05
Plastics film and sheeting —
Determination of impact resistance by
the free-falling dart method —
Part 2:
Instrumented puncture test
Film et feuille de plastiques — Détermination de la résistance au choc
par la méthode par chute libre de projectile —
Partie 2: Essai avec appareil de perforation
Reference number
ISO 7765-2:2022(E)
© ISO 2022
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ISO 7765-2:2022(E)
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© ISO 2022
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Published in Switzerland
ii
© ISO 2022 – All rights reserved
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ISO 7765-2:2022(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 4
5 Apparatus . 5
5.1 General . 5
5.2 Test device . 5
5.2.1 General . 5
5.2.2 Energy carrier . 6
5.2.3 Striker . 7
5.2.4 Clamping device . 7
5.3 Instrument for measuring force and deflection . 9
5.3.1 General . 9
5.3.2 Force measurement sensor . 9
5.3.3 Deflection measurement system . 9
5.4 Thickness gauge . 9
6 Test specimens .
...
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