ISO 8367-1:1993

Overview

ISO 8367-1:1993 is an international standard published by the International Organization for Standardization (ISO) that specifies the dimensional tolerances for general purpose paper sacks. This part of ISO 8367 focuses exclusively on paper sacks, providing manufacturers and users with clear guidelines to ensure uniformity and quality in sack production. The standard defines acceptable tolerances for critical dimensions such as ply grammage, sack length and width, gusset width, circumference with gussets, bottom width, valve width and position, as well as print placement.

By adhering to ISO 8367-1, packaging manufacturers can ensure their paper sacks meet consistent size and quality requirements, facilitating better performance, compatibility, and customer satisfaction in logistics and storage.

Key Topics

• Scope and Application
  ISO 8367-1 applies to the dimensional tolerances of paper sacks as described in ISO 6590-1. It covers sacks intended for general purpose packaging, ensuring the sacks' dimensions fall within standardized limits.

• Dimensions Covered and Tolerances
  The standard specifies precise tolerances for various sacks' dimensions, including:

  • Ply grammage: ±4%
  • Length of sack: ±10 mm
  • Width of sack: ±5 mm
  • Width of gusset: ±5 mm
  • Sack circumference with gussets: ±10 mm
  • Width of bottom: ±5 mm
  • Width of valve: +5 mm
  • Valve collar and sewn valve: 0 mm tolerance
  • Position of leading edge of valve sleeve: ±5 mm
  • Print position longitudinally: ±20 mm
  • Print position transversely: ±15 mm

• Measurement and Sampling Methods
  Measurements must be taken according to ISO 6591-1, and sampling is performed per ISO 7023 to ensure batches delivered for quality control comply systematically with the defined tolerances.

• Quality Control and Agreements
  If tighter tolerances than those specified are required, agreements between buyer and supplier should be established to meet specific product needs.

Applications

• Paper Sack Manufacturing
  Manufacturers use ISO 8367-1 to design and produce paper sacks with consistent dimensions, which improves stacking, filling efficiency, and durability.

• Quality Assurance in Packaging
  Quality control departments rely on this standard to sample and verify sack dimensions, ensuring compliance with contractual and regulatory requirements.

• Logistics and Storage
  Standardized sack sizes and tolerances allow for optimized palletizing, storage, and transportation, reducing damages caused by improper sizing.

• Printing and Branding
  The defined tolerances for print positioning guarantee consistent logo and label placement, which is crucial for brand visibility and regulatory labeling.

Related Standards

• ISO 6590-1:1983 – Defines vocabulary and types for paper sacks, serving as a foundational reference for ISO 8367-1.
• ISO 6591-1:1984 – Details description and measurement methods of empty paper sacks, referenced for proper dimensional testing.
• ISO 7023:1983 – Specifies sampling methods for empty sacks during inspection and testing processes.
• ISO 536 – Describes determination of grammage for paper and cardboard layers used in sack manufacture.

Benefits of Implementing ISO 8367-1

• Ensures consistency in sack sizes across producers and batches
• Supports product quality and performance in packaging applications
• Facilitates international trade by meeting globally recognized tolerances
• Enhances customer confidence and satisfaction via reliable product specifications
• Enables efficient manufacturing and inventory management through standard dimensions

Keywords: ISO 8367-1, dimensional tolerances, paper sacks, general purpose sacks, packaging standards, sack dimensions, ply grammage, quality control for sacks, print positioning, packaging quality assurance