Overview
ISO 22631:2019 - Adhesives - Test methods for adhesives for floor and wall coverings - Peel test specifies a laboratory method to measure the adhesion of resilient or textile floor coverings and wall coverings (excluding wallpaper) bonded to a substrate under peel forces. The standard defines specimen preparation, conditioning, test apparatus and the peel test procedure to quantify peel resistance (N/mm) and assess adhesive performance and durability under defined environmental exposures.
Key Topics
- Scope & principle
- Measures resistance to peeling of a bonded covering/substrate assembly after defined conditioning sequences (standard atmosphere and elevated‑temperature ageing).
- Specimens and dimensions
- Test pieces: five specimens per conditioning sequence, typically 250 mm × 50 mm (250 mm in machine direction). Bonded area commonly 120 mm × 50 mm.
- Substrates
- Two accepted substrate types: fibre cement (autoclaved, compressed panels) and plywood with specified widths and approximate thicknesses.
- Apparatus
- Notched trowel (manufacturer-specified notch geometry) for adhesive application.
- Roller (approx. 60 ±5 mm wide, 90 ±5 mm diameter, mass ~3.50 kg) for consolidation.
- Heating/ageing chamber (ventilated, 20 °C–200 °C range) and a tensile testing machine conforming to ISO 7500‑1 (class 1).
- Peeling device with rolls for controlled clamp and feed.
- Preparation & conditioning
- Cleaning, adhesive sampling (ISO 15605), conditioning of adhesive/materials at a standard atmosphere (23 ±2 °C, 50 ±5 % RH, per ISO 554).
- Specific pre‑drying for fibre cement and optional primer use where substrate failure occurs.
- Conditioning sequences include control and accelerated ageing (as specified in the standard and referenced guidance such as ISO 9142).
- Test procedure & evaluation
- Peel performed with crosshead speed (100 ±10 mm/min).
- Peel resistance R = mean peel force (N) / specimen width (mm). Mean force is taken over the middle 100 mm of the bond, ignoring first/last 10 mm.
- Reporting requirements include specimen details, adhesive application, conditioning, and failure modes.
Applications
- Product development and R&D for adhesives and coverings to compare bond strength.
- Quality control and incoming inspection in manufacturing of adhesives, resilient flooring, and textile coverings.
- Independent test laboratories and certification bodies assessing compliance, durability and performance claims.
- Specifiers, architects and contractors evaluating adhesive suitability for specific substrates (fibre cement, plywood) and service conditions.
Related Standards
Normative references cited in ISO 22631:2019 include:
- ISO 472 (Plastics - Vocabulary)
- ISO 554 (Standard atmospheres for conditioning/testing)
- ISO 7500‑1 (Calibration of testing machines)
- ISO 9142 (Guide to laboratory ageing of bonded joints)
- ISO 10365 (Designation of failure patterns)
- ISO 15605 (Adhesive sampling)
- EN 1067 (Examination and preparation of samples for testing)
Keywords: ISO 22631:2019, peel test, adhesives, floor coverings, wall coverings, peel resistance, adhesive testing, fibre cement, plywood, tensile testing machine.
