ISO 4675:2017

Overview

ISO 4675:2017 is an internationally recognized standard specifying a low-temperature bend test method for rubber- or plastics-coated fabrics. Developed by the International Organization for Standardization (ISO), this test evaluates the ability of coated fabrics to withstand bending stresses at low temperatures after controlled exposure periods. Applicable to materials with thicknesses ranging from 0.1 mm to 2.2 mm, this standard is essential for assessing the durability and flexibility of coated fabrics in cold environments.

The procedure involves conditioning the fabric samples, exposing them to specified low temperatures in a controlled cold chamber, then subjecting them to bending stresses using a standardized bending jig. Post-test examination identifies any cracking or damage in the coating, helping manufacturers ensure quality and performance consistency under cold conditions.

Key benefits of ISO 4675:2017 include its clear testing process for low-temperature resistance and its application scope covering rubber- or plastics-coated fabrics, which are widely used in industrial, protective, and outdoor applications.

Key Topics

• Scope and applicability: Testing rubber- or plastics-coated fabrics between 0.1 mm and 2.2 mm thickness with possible adaptations for thicker materials.
• Test apparatus: Includes a cold chamber maintaining ±1°C, a bending jig with specified weights and dimensions, glass conditioning plates, and protective gloves.
• Test pieces: Standard specimens sized 25 mm × 100 mm, taken across fabric width.
• Conditioning: Samples conditionally exposed to standard atmospheres per ISO 2231 before testing.
• Test procedure:
  • Samples chilled for 4 hours at specified temperature in the cold chamber.
  • Bending performed inside the chamber to avoid temperature variation.
  • Use of a trigger-pin bending jig ensures controlled and repeatable flexing.
• Damage assessment: Crack depth graded on a five-level scale (A to D, plus O for no cracks); number and length of cracks recorded.
• Test report requirements: Includes fabric details, temperature, exposure duration, crack assessments, any deviations, and testing date.

Applications

ISO 4675:2017 applies to quality control and product development for coated textiles exposed to cold environments. It supports industries where coated fabrics require reliable low-temperature flexibility, including:

• Protective clothing and gear for cold climates
• Automotive and transportation covers and upholstery
• Outdoor tarpaulins and awnings
• Industrial conveyor belts and flexible covers exposed to low temperatures
• Insulation or sealing materials in cold storage or refrigerated transport

By adhering to ISO 4675:2017, manufacturers can better predict fabric performance during low-temperature bending - enhancing product reliability while optimizing materials for specific end-use conditions.

Related Standards

• ISO 2231: Rubber- or plastics-coated fabrics - Standard atmospheres for conditioning and testing
• ISO 2286-3: Rubber- or plastics-coated fabrics - Determination of roll characteristics - Part 3: Method for determination of thickness

These standards complement ISO 4675:2017 by defining environmental conditioning parameters and precise thickness measurement methods essential for consistent testing and accurate assessment.

Keywords: ISO 4675, low-temperature bend test, rubber-coated fabrics, plastics-coated fabrics, coated fabric testing, flexibility testing, cold resistance, bending jig, coated textile standard, ISO low temperature test, fabric crack assessment, coated fabric durability.