Overview
ISO 5412:2022 - Plastics - Industrial compostable plastic shopping bags defines requirements and test methods for plastic shopping bags intended for industrial composting. The standard covers dimension limits, print quality, physical and mechanical properties, industrial compostability testing, sampling and inspection rules, plus packaging, transportation and storage for bags made primarily from industrial compostable resin. ISO 5412:2022 distinguishes two product classes (Class I and Class II) and multiple bag sizes by volume (XS, S, M, L).
Key topics and technical requirements
- Scope and definitions: Clarifies what qualifies as an industrial compostable shopping bag (intended for carrying shopping and for industrial composting) and excludes roll/tear bags used only for packaging.
- Classification: Two classes (Class I and Class II) based on sealing strength and tensile properties. Class II includes “T‑shirt” style bags and is subdivided by volume:
- XS: V < 9 L; S: 9 ≤ V < 15 L; M: 15 ≤ V ≤ 25 L; L: V > 25 L.
- Dimensional controls: Specifies acceptable thickness, width and length deviations (tolerances differ by class and nominal dimensions).
- Print quality: Requirements for appearance and stripping rate (print adhesion).
- Mechanical and physical tests: Includes stress-at-break (Class II), lifting test, drop test (Class I), water leakage, sealing strength and dart impact tests.
- Industrial compostability: Reference testing procedures to demonstrate compostable behavior under industrial composting conditions (aligned with ISO 17088 principles).
- Testing and inspection: Sampling plans, batch inspection rules, type testing and decision rules (using ISO sampling standards such as ISO 2859-1).
- Packaging, marking, transport and storage: Requirements for safe handling and correct labeling of compostable shopping bags.
Applications and practical value
- Manufacturers use ISO 5412:2022 to design, produce and quality‑control industrial compostable shopping bags that meet measurable performance and compostability criteria.
- Procurement teams and retailers rely on the standard to verify product claims, ensure handling robustness, and select appropriate bag classes for intended uses.
- Composting operators and waste managers use standardized test evidence to assess compatibility of bags with industrial composting processes.
- Regulators and conformity assessors use the standard as a technical reference when evaluating compliance with compostability and labeling requirements.
Related standards
- ISO 17088 - Specifications for compostable plastics (organic recycling)
- ISO 291 - Standard atmospheres for conditioning and testing
- ISO 527-3 - Tensile test methods for films and sheets
- ISO 2859-1, ISO 4592, ISO 4593 - Sampling and dimensional test methods
ISO 5412:2022 provides a practical, test‑based framework to ensure industrial compostable shopping bags are both functional for consumers and compatible with industrial composting systems.
