ISO 9073-1-2023 PDF

Full title and description

Nonwovens — Test methods — Part 1: Determination of mass per unit area (ISO 9073-1:2023). This international standard specifies a standardized laboratory method to determine the mass per unit area (areal mass, typically reported in g/m²) of nonwoven fabrics for quality control, specification and comparison purposes.

Abstract

ISO 9073-1:2023 defines the procedure to obtain representative test pieces, measure their mass and area and calculate mass per unit area for nonwoven materials. The document gives requirements for specimen preparation, balance accuracy, conditioning and reporting to ensure reproducible and comparable results across laboratories and suppliers.

General information

• Status: Published (International Standard).
• Publication date: June 2023 (listed as published June 2023; several national listings show effective dates in early June 2023).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 59.080.30 — Textile fabrics (nonwovens).
• Edition / version: Edition 2 (2023).
• Number of pages: ISO electronic publication: 6 pages (note: national/adopted publications and commercial copies sometimes show extended front matter or national forewords—page counts such as 14–18 pages are reported for some national/adopted editions).

Scope

The standard specifies a laboratory method to determine the mass per unit area of nonwoven fabrics by cutting representative test specimens, measuring their area and mass under specified conditions and calculating the areal mass in grams per square metre. The procedure addresses sampling, specimen size and number, balance accuracy and conditioning so the result is suitable for product specification, incoming inspection and comparative testing.

Key topics and requirements

• Definition of mass per unit area and units (g/m²) and the principle of measurement (mass ÷ area).
• Requirements for representative sampling and orientation of specimens to account for anisotropy in nonwovens.
• Specified specimen dimensions and number of specimens to be tested to achieve repeatable results.
• Balance accuracy and readability requirements (greater accuracy than some woven‑fabric standards to suit nonwoven variability).
• Conditioning of specimens (temperature and relative humidity) prior to weighing and reporting of test conditions and results.
• Calculation method, rounding and reporting elements (mean value, individual values, test conditions and any deviations from the standard method).

Typical use and users

Used by nonwovens manufacturers, textile and materials test laboratories, quality assurance teams, product development engineers and purchasing/specification professionals to verify product areal mass, support product specifications, perform incoming inspection and compare batches or suppliers.

Related standards

ISO 9073 is a multipart series of test methods for nonwovens; relevant parts include ISO 9073-2 (determination of thickness) and ISO 9073-3 (tensile strength and elongation — revised 2023), among others in the series covering additional physical properties and performance tests. The 2023 edition of part 1 supersedes ISO 9073-1:1989.

Keywords

nonwoven, mass per unit area, areal mass, g/m², test method, textile testing, ISO 9073-1, conditioning, specimen, balance accuracy.

FAQ

Q: What is this standard?

A: ISO 9073-1:2023 is the international standard that defines the laboratory method to determine the mass per unit area (areal mass) of nonwoven fabrics.

Q: What does it cover?

A: It covers specimen selection and preparation, measurement of mass and area, calculation of mass per unit area in g/m², conditioning and reporting requirements to ensure reproducible results.

Q: Who typically uses it?

A: Nonwoven product manufacturers, materials testing laboratories, QA/QC personnel, product developers and procurement/specification authors use this standard for acceptance testing, specification compliance and comparative measurement.

Q: Is it current or superseded?

A: Current — ISO 9073-1:2023 is the active edition and replaces the earlier ISO 9073-1:1989.

Q: Is it part of a series?

A: Yes — ISO 9073 is a multipart series of test methods for nonwovens; other parts address thickness, tensile strength, absorption and additional properties (for example ISO 9073-2 and ISO 9073-3).

Q: What are the key keywords?

A: Nonwoven, areal mass, mass per unit area, g/m², specimen, conditioning, textile testing, ISO 9073.