Plastics — Determination of pourability

This document specifies two methods, A and B, for determining the pourability of plastics in powdered and granular form, by measuring the flow time through a funnel under specified conditions. From method A, information concerning the processability can be derived, whilst method B is especially designed for process control during manufacture. The methods specified are not necessarily applicable to all plastics in powdered and granular form.

Plastiques — Détermination de l'aptitude à l'écoulement

Le présent document spécifie deux méthodes (méthode A et méthode B) pour la détermination de l’aptitude à l’écoulement des plastiques en poudre et en granulés, par mesurage du temps d’écoulement à travers un entonnoir dans des conditions spécifiées. La méthode A permet d’obtenir des informations concernant l’aptitude à la mise en œuvre, alors que la méthode B est spécifiquement destinée au contrôle des procédés en cours de production. Les méthodes spécifiées ne s’appliquent pas nécessairement à la totalité des plastiques en poudre et en granulés.

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ISO 6186:2023 - Plastics — Determination of pourability Released:12. 07. 2023
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Third edition
Plastics — Determination of
Plastiques — Détermination de l'aptitude à l'écoulement
Reference number
ISO 6186:2023(E)
© ISO 2023

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ISO 6186:2023(E)
© ISO 2023
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  © ISO 2023 – All rights reserved

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ISO 6186:2023(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Apparatus . 1
6 Conditioning . 3
7 Procedure .3
7.1 General . 3
7.2 Method A . 3
7.3 Method B . 3
8 Expression of results . 4
9 Test report . 4
© ISO 2023 – All rights reserved

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ISO 6186:2023(E)
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This document was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 5, Physical-
chemical properties, in collaboration with the European Committee for Standardization (CEN) Technical
Committee CEN/TC 249, Plastics, in accordance with the Agreement on technical cooperation between
ISO and CEN (Vienna Agreement).
This third edition cancels and replaces the second edition (ISO 6186:1998), which has been technically
The main changes compared to the previous edition are as follows:
— Clause 2 and Clause 3 have been updated;
— Clause 5 “Apparatus” has been technically revised;
— former Clause 9 "Precision" has been deleted and subsequent clause has been renumbered;
— former Clause 10 "Test report" has been renumbered as the new Clause 9, and has been rearranged
and revised.
Any feedback or questions on this document should be directed to the user’s national standards body. A
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  © ISO 2023 – All rights reserved

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Plastics — Determination of pourability
1 Scope
This document specifies two methods, A and B, for determining the pourability of plastics in powdered
and granular form, by measuring the flow time through

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