ISO 6186:2023 プラスチック - 注ぐ性の測定 | ページ 2

Foreword

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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 document 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 ).

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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 revised.

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.

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 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.

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.

3 Terms and definitions

For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminology databases for use in standardization at the following addresses: