BS ISO 11093-4:2022

What is this ISO 11093‑4 - Measurement of dimensions about?

ISO 11093‑4 discusses paper and board and testing of cores with a focus on measurement of dimensions. ISO 11093‑4 is the fourth part of the ISO 11093 multi-series on paper and board that specifies test methods for the determination of the internal diameter, the external diameter, the wall thickness, and the length of paper and board cores.

Who is ISO 11093‑4 - Measurement of dimensions for?

ISO 11093‑4 on measurement of dimensions is useful for:

• Paper and board manufacturers
• Designers
• Testers
• Quality assurance department

Why should you use ISO 11093‑4 - Measurement of dimensions?

ISO 11093‑4 provides four methods for determining the internal diameter. They are of differing accuracy and speed. The method used is compatible with the type of core being measured and shall be specified and reported.

ISO 11093‑4 discusses sampling, measurement of internal diameters, measurement of external diameters, measurement of wall thickness, measurement of length, and test report.

ISO 11093‑4  will help you to understand the determination of the internal diameter, the external diameter, the wall thickness, and the length of paper and board cores.

What’s changed since the last update?

BS ISO 11093‑4:2022 supersedes ISO 11093-4:2016, which is withdrawn. BS ISO 11093‑4:2022 includes some technical changes with respect to ISO 11093-4:2016.

These include:

• Due to roundness deviation of paper cores with an internal diameter >180 mm and a wall thickness of <3 mm in 6.2.2, a maximum value for the internal diameter of ≤180 mm and a minimum value for the wall thickness of ≥3 mm has been added for Method A
• The number of methods for determining the internal diameter has been increased from two to four and the remaining methods have been renamed
• Figure 2 has been changed (5 levels of calibrated mandrel instead of 11 levels)
• Information under Figure 2 has been added
• A new Figure B.2 has been added