ISO 5402-1:2022 PDF

Leather — Determination of flex resistance — Part 1: Flexometer method

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Title (English):

ISO 5402-1:2022

Leather — Determination of flex resistance — Part 1: Flexometer method

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 9
Publication date:: March 30, 2022
Edition:: ISO IS 5402 edition 3 version 1
ICS:: 59.140.30

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Description (English):

This document specifies a method for determining the dry or wet flex resistance of leather and finishes applied to leather. It is applicable to all types of flexible leather below 3,0 mm in thickness.

Technical details

Technical committee: IULTCS - International Union of Leather Technologists and Chemists Societies
SKU: ISO 5402-1:2022

Abstract

Overview

ISO 5402-1:2022 - Leather: Determination of flex resistance - Part 1: Flexometer method specifies a standardized laboratory procedure to measure the dry and wet flex resistance of leather and leather finishes. The method applies to all flexible leathers under 3.0 mm thickness and uses a reciprocating flexometer apparatus to produce a running fold while counting flex cycles and inspecting for damage.

Key topics and technical requirements

Scope and purpose: Determines how many flex cycles a leather sample withstands without visible damage; used to define performance criteria for end uses.
Apparatus: A flexometer with a movable upper clamp and fixed lower clamp, plus a counter. Key parameters:
- Upper-clamp reciprocation angle 22.5 ± 0.5° at 100 ± 5 cycles/min.
- Two permitted upper-clamp geometries (Specification 1 and 2); clamp type and manufacturer must be reported.
- Vertical distance between upper-clamp ledge and lower-clamp edge 25.0 ± 0.5 mm.
Sample prep and conditioning:
- Sampling per ISO 2418; specimen preparation and atmospheric conditioning per ISO 2419.
- Wet testing requires immersion using distilled/deionized water (ISO 3696 grade 3) in a desiccator with vacuum cycles to

Related standards

Standards mentioned in the description

Overview

Key topics and technical requirements

Scope and purpose: Determines how many flex cycles a leather sample withstands without visible damage; used to define performance criteria for end uses.
Apparatus: A flexometer with a movable upper clamp and fixed lower clamp, plus a counter. Key parameters:
- Upper-clamp reciprocation angle 22.5 ± 0.5° at 100 ± 5 cycles/min.
- Two permitted upper-clamp geometries (Specification 1 and 2); clamp type and manufacturer must be reported.
- Vertical distance between upper-clamp ledge and lower-clamp edge 25.0 ± 0.5 mm.
Sample prep and conditioning:
- Sampling per ISO 2418; specimen preparation and atmospheric conditioning per ISO 2419.
- Wet testing requires immersion using distilled/deionized water (ISO 3696 grade 3) in a desiccator with vacuum cycles to

ISO 5402-1:2022 PDF

Technical details

Abstract

Overview

Key topics and technical requirements

Related standards

Abstract

Overview

Key topics and technical requirements

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