Overview
ISO 3034:2011 - Corrugated fibreboard - Determination of single sheet thickness specifies a laboratory test method to measure the single sheet thickness of corrugated fibreboard used for packing cases. The standard applies to all types of corrugated fibreboard and details instrumentation, sampling, conditioning, test execution, calculation and reporting. ISO 3034:2011 is aimed at ensuring repeatable, traceable thickness measurements for quality control, specification compliance and materials evaluation.
Key topics and technical requirements
- Principle: thickness measured under a specified static load using a high‑precision dead‑weight micrometer.
- Loading pressure: 20 kPa ± 0.5 kPa between plane, parallel circular pressure faces.
- Micrometer design and accuracy:
- One pressure face diameter: 35.7 mm ± 0.3 mm; the other face must fully contact it.
- Instrument resolution to nearest 0.05 mm and performance limits: indication error ±0.5%, parallelism error ≤1%, repeatability ≈0.5% (sd).
- Recommended measuring capacity: at least 20 mm.
- Test pieces and sampling:
- Sampling per ISO 186; condition specimens per ISO 187.
- Cut at least 10 test pieces (minimum area 10 000 mm² / 100 cm², or circular ø 112.9 mm). If only one piece per specimen is possible, use ten specimens.
- Measurement procedure:
- Place test piece at least 20 mm from any edge; close movable face at 2–3 mm/s; read when value stabilizes (normally 2–5 s, bedding down 2–3 s).
- Make one measurement per test piece; perform a minimum of 10 readings.
- Results and reporting:
- Calculate mean and standard deviation; report thickness in millimetres to three significant figures.
- Test report must reference ISO 3034 and include test conditions, material ID, conditioning atmosphere, mean, standard deviation and any deviations from the standard.
Applications and who uses it
- Packaging manufacturers and converters - quality control of corrugated board for case strength and dimensional control.
- Testing laboratories and R&D teams - material characterization, comparative testing, and validation of production changes.
- Purchasing/specification engineers - verification of supplier claims and contract compliance.
- Process troubleshooting - diagnosing converting or printing effects on board thickness and uniformity.
Keywords: ISO 3034:2011, corrugated fibreboard, single sheet thickness, dead‑weight micrometer, packaging quality control, thickness test method.
Related standards
- ISO 186 - Sampling to determine average quality
- ISO 187 - Standard atmosphere for conditioning and testing
- ISO 4046-4, ISO 534 (referenced in foreword) and precision guidance referenced in Annex B (comparative testing and repeatability/reproducibility considerations).