FprEN ISO 6599-1

Packaging - Conditioning for testing - Part 1: Paper sacks (ISO/FDIS 6599-1:2026)

This document specifies the conditioning atmospheres and the method for conditioning samples of intact, empty paper sacks before and during testing.

Verpackung - Klimatische Vorbehandlung für die Prüfung - Teil 1: Papiersäcke (ISO/FDIS 6599-1:2026)

Emballages - Conditionnement pour essais - Partie 1: Sacs en papier (ISO/FDIS 6599-1:2026)

La présente partie de l'ISO 6599 spécifie les atmosphères et la méthode de conditionnement des échantillons de sacs en papier, intacts et vides, avant et au cours des essais. Si uniquement des essais conventionnels sur papier doivent être faits sur le matériau du sac, des échantillons de matériau doivent être découpés et conditionnés comme spécifié dans l'ISO 187.
La présente partie de l'ISO 6599 est applicable à tous les types de sacs en papier, vides, tels que spécifiés dans l'ISO 6590/1.

Embalaža - Kondicioniranje za preskušanje - 1. del: Papirnate vreče (ISO/DIS 6599-1:2025)

General Information

• Status: Not Published
• Publication Date: 27-Sep-2026
• ICS: 55.080 - Sacks. Bags
• Technical Committee: CEN/TC 261 - Packaging
• Drafting Committee: CEN/TC 261/SC 5/WG 26 - Packages made from flexible materials (e.g. flexible plastics, plastic laminates, paper/board laminated, metal foil laminates, textiles)
• Current Stage: 4599 - Dispatch of FV draft to CMC - Finalization for Vote
• Start Date: 27-Mar-2026
• Completion Date: 27-Mar-2026
• Ref Project: oSIST prEN ISO 6599-1:2025 - Packaging - Conditioning for testing - Part 1: Paper sacks (ISO/DIS 6599-1:2025)

Relations

• Consolidated By: ISO/FDIS 6599-1 - Packaging — Conditioning for testing — Part 1: Paper sacks
• Effective Date: 12-Feb-2026
• Revises: EN 26599-1:1992 - Packaging - Sacks - Conditioning for testing - Part 1: Paper sacks (ISO 6599-1:1983)
• Effective Date: 25-Jun-2025

Overview

FprEN ISO 6599-1: Packaging - Conditioning for testing - Part 1: Paper sacks establishes standardized methods and conditions for conditioning intact, empty paper sacks before and during performance testing. Developed by CEN and based on the ISO/FDIS 6599-1:2026 standard, this document ensures that paper sacks reach equilibrium with a controlled atmosphere, particularly concerning temperature and humidity, to yield reliable and comparable test results. Proper conditioning is crucial as the moisture content of paper directly affects physical properties and performance during packaging tests.

Key Topics

• Conditioning Atmospheres: Defines standard environmental settings, primarily temperature and relative humidity, under which paper sacks must be conditioned. The preferred standard atmosphere is 23°C ± 1°C and 50% ± 2% relative humidity, but alternative settings (such as 27°C/65% or 20°C/65%) may be used depending on local climate or specific agreements.

• Conditioning Method: Outlines procedures for preparing samples by exposing them to controlled conditions so that they achieve moisture and temperature equilibrium. Ensures even air circulation around sacks, particularly on both outer and inner ply surfaces for open-mouth sacks.

• Minimum Conditioning Periods:

  • Paper sacks without barrier plies: at least 24 hours under conditioning conditions.
  • Paper sacks with one or more barrier plies: at least 7 days to reach equilibrium.

• Equipment Requirements: Specifies the need for controlled-environment rooms with instrumentation for accurate and uniform maintenance of atmospheric conditions, such as temperature and humidity monitoring devices (e.g., recording hygrometers).

• Reporting Requirements: Testing reports must include references to the standard, the conditioning conditions used, duration, and any deviations or unusual observations to ensure traceability and reproducibility.

Applications

• Packaging Industry: Manufacturers, converters, and laboratories use this standard to condition paper sacks prior to performing mechanical, physical, or durability testing, ensuring consistency and repeatability in results.

• Quality Assurance: Helps organizations maintain compliance with precise quality testing environments for paper sack products, thus supporting internal quality control and assurance programs.

• Product Development: Enables packaging engineers to evaluate prototypes and new material formulations under controlled conditions, facilitating data-driven decisions regarding paper sack design and performance.

• Regulatory Compliance: Serves as a basis for demonstrating conformity with national or international regulations or buyer specifications concerning the performance and testing of paper-based sacks.

Related Standards

For comprehensive quality and testing approaches, use FprEN ISO 6599-1 alongside:

• ISO 187: Paper, board and pulps - Standard atmosphere for conditioning and testing and procedure for monitoring the atmosphere and conditioning of samples

  • Defines general conditioning procedures for paper and board materials.

• ISO 554: Standard atmospheres for conditioning and/or testing - Specifications

  • Details standard atmosphere parameters for various conditioning and testing applications.

• ISO 6590-1: Packaging - Vocabulary - Part 1: Paper sacks

  • Provides terminology and definitions relevant to paper sacks in packaging contexts.

These standards collectively help organizations establish robust, scientifically valid conditioning and testing protocols for packaging materials, improving product consistency and regulatory alignment across the packaging sector.

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Keywords: packaging conditioning, paper sacks, test preparation, controlled atmosphere, paper packaging standards, ISO 6599-1, CEN, humidity and temperature conditioning, packaging lab testing, packaging compliance.

Standards Content (Sample)

SLOVENSKI STANDARD
01-november-2025
Embalaža - Kondicioniranje za preskušanje - 1. del: Papirnate vreče (ISO/DIS 6599-
1:2025)
Packaging - Conditioning for testing - Part 1: Paper sacks (ISO/DIS 6599-1:2025)
Verpackung - Klimatische Vorbehandlung für die Prüfung - Teil 1: Papiersäcke (ISO/DIS
6599-1:2025)
Emballages - Conditionnement pour essais - Partie 1: Sacs en papier (ISO/DIS 6599-
1:2025)
Ta slovenski standard je istoveten z: prEN ISO 6599-1
ICS:
55.080 Vreče. Vrečke Sacks. Bags
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
International
Standard
ISO/DIS 6599-1
ISO/TC 122/SC 3
Packaging — Conditioning for
Secretariat: BSI
testing —
Voting begins on:
Part 1: 2025-08-29
Paper sacks
Voting terminates on:
2025-11-21
ICS: 55.080
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document has not been edited by the ISO Central Secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS.
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Reference number
ISO/DIS 6599-1:2025(en)
DRAFT
ISO/DIS 6599-1:2025(en)
International
Standard
ISO/DIS 6599-1
ISO/TC 122/SC 3
Packaging — Conditioning for
Secretariat: BSI
testing —
Voting begins on:
Part 1:
Paper sacks
Voting terminates on:
ICS: 55.080
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document has not been edited by the ISO Central Secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2025
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
BE CONSIDERED IN THE LIGHT OF THEIR
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
or ISO’s member body in the country of the requester.
NATIONAL REGULATIONS.
ISO copyright office
RECIPIENTS OF THIS DRAFT ARE INVITED
CP 401 • Ch. de Blandonnet 8
TO SUBMIT, WITH THEIR COMMENTS,
CH-1214 Vernier, Geneva
NOTIFICATION OF ANY RELEVANT PATENT
Phone: [phone]
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Email: [e-mail]
Website: www.iso.org
Published in Switzerland Reference number
ISO/DIS 6599-1:2025(en)
ii
ISO/DIS 6599-1:2025(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Conditioning atmospheres . 2
4.1 General .2
4.2 Temperature and humidity .2
5 Equipment . 2
5.1 Room and measuring instrumentation .2
5.2 Determination of temperature and relative humidity .2
6 Procedure . 2
6.1 General .2
6.2 Minimum conditioning period for sacks without barrier plies .2
6.3 Minimum conditioning period for sacks with barrier plies .3
7 Test report . 3

iii
ISO/DIS 6599-1:2025(en)
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 IS
...