ISO 6591-1:2026

Overview

ISO 6591-1:2026 is an international standard developed by the International Organization for Standardization (ISO) focusing on the dimensions and measurement methods for empty paper sacks used in packaging applications. This standard provides a unified approach to specifying and assessing the key dimensions of empty paper sacks, as well as the procedure for accurately measuring these values. The guidance ensures consistency, quality assurance, and interoperability for manufacturers, suppliers, and end-users involved in packaging and logistics.

Key Topics

• Dimensional Specification: The standard details the principal measurements of empty paper sacks, including parameters such as length, width, bottom width, gusset width, valve opening, valve sleeve, and turn-over length.
• Terminology and Definitions: ISO 6591-1 incorporates clear definitions for each dimensional aspect, referencing related ISO standards to create a consistent vocabulary for the packaging industry.
• Types of Paper Sacks: It outlines the different sack types such as open mouth sewn sacks, pasted sacks with various bottoms, and valved sacks, each with specific measurement points.
• Valve Position Identification: Guidance is provided for indicating the position of the valve on valved sacks, ensuring a standard approach for both manufacturers and users.
• Measurement Method: The document specifies the required apparatus, conditioning protocol, and step-by-step instructions for accurately measuring paper sack dimensions to an accuracy of 1 mm.
• Sampling and Test Reporting: ISO 6591-1 describes standardized sampling methods and the minimum information that must be included in test reports for quality control and verification processes.

Applications

ISO 6591-1:2026 finds practical use across multiple segments of the paper packaging supply chain:

• Manufacturers: Enables paper sack producers to maintain consistency and meet international expectations for size and fit, supporting global trade and procurement standards.
• Quality Control and Testing: Laboratories and quality assurance teams use the specified measurement methods to verify compliance, control product quality, and investigate shipment discrepancies.
• Logistics and Supply Chain Management: Accurate dimensional data supports efficient palletization, storage, and transportation of sacks, minimizing waste and maximizing space utilization.
• Procurement and Specification: Purchasing agents and end-users reference this standard to clearly communicate sack requirements and ensure compatibility with filling and sealing equipment.
• Product Development: Designers and engineers rely on standard dimensions and terminology to develop new packaging solutions or adapt existing lines to international criteria.

Related Standards

ISO 6591-1:2026 is part of a wider framework for packaging standards. Key related documents include:

• ISO 6590-1: Packaging - Vocabulary - Part 1: Paper sacks (provides standardized terminology and definitions)
• ISO 6599-1: Packaging - Conditioning for testing - Part 1: Paper sacks (guides sample conditioning prior to measurement)
• ISO 7023: Packaging - Sacks - Method of sampling empty sacks for testing (details sampling procedures for quality assessment)

By integrating ISO 6591-1:2026 and related standards, organizations can ensure robust, efficient packaging and testing processes for empty paper sacks, supporting regulatory compliance and operational excellence in the global packaging industry.

For further information and access to the complete list of packaging standards, visit iso.org.