ISO 18932:2009

Overview

ISO 18932:2009 - Imaging materials - Adhesive mounting systems - Specifications defines requirements for adhesive mounting materials used to attach photographic and other printed images (photographic, electrophotographic, electrostatic, thermal transfer, inkjet) to mounting boards, album leaves, file cards and similar supports. The standard covers both pressure‑sensitive and thermally‑activated adhesives (supported and unsupported forms) and explicitly excludes spray adhesives. ISO 18932:2009 focuses on permanent, photo‑safe mounting systems and is not intended where permanent mounting is not recommended.

Key topics and technical requirements

• Types and constructions
  • Supported vs unsupported adhesives; supplied in roll, sheet or coated-on-board forms.
  • Pressure‑sensitive systems use release‑coated liners; thermally‑activated films are dry and non‑tacky at 23 °C.
• Thermally‑activated classification
  • Type I - Non‑removable (permanent after recommended time/temperature).
  • Type II - Removable (detachable by reheating under specified conditions).
  • Class 1 (low temperature): adhesion at 66 °C to 108 °C.
  • Class 2 (high temperature): adhesion at 108 °C to 163 °C - not recommended for resin‑coated (RC) or many digital prints.
• Performance and safety
  • Adhesive shall not cause discoloration and must pass the bleed test and Photographic Activity Test (PAT) requirements.
  • Minimum peel/bond strength: 1,3 N/cm (132 g‑force/cm) when tested per the standard’s modified peel tests.
  • Required testing: unaged and heat‑aged peel tests; additional tests for initial stress and adhesive shelf‑life where applicable.
• Physical and handling requirements
  • No surface textures that can imprint the image; uniform thickness; no voids or particles; uniform color when transparent/translucent.
  • Liners must remove cleanly without delamination or transfer.
  • Blocking, shelf‑life and storage guidance (optimum ~23 °C, 50% RH; avoid prolonged ≥38 °C).

Applications and users

• Practical uses: photo mounting for albums, framing, displays, mountboards, archival files and commercial print finishing.
• Who uses it: adhesive manufacturers, imaging material and mounting board producers, photographic labs, framers, archivists, conservators (note: conservators may prefer reversible systems but can use this for permanent solutions), and quality/standards managers specifying photo‑safe mounting systems.

Related standards

• ISO 18902 - Albums, framing and storage materials
• ISO 18916 - Photographic Activity Test (PAT)
• EN 28510‑1:1993 and ASTM D3330/D3330M (peel/adhesion test methods referenced and adapted)

Keywords: ISO 18932:2009, adhesive mounting systems, imaging materials, pressure‑sensitive adhesive, thermally‑activated adhesive, photographic mounting, Photographic Activity Test, peel adhesion.