Overview
ISO 29864:2018 specifies standardized tensile test methods to measure the breaking strength and elongation at break of self‑adhesive tapes. The standard covers two test procedures: Method A for non‑reinforced tapes and Method B for tapes reinforced with filaments. It defines specimen sizes, conditioning, test machine and tooling requirements, and practical cautions (for example, differences between factory‑cut and newly cut edges).
Keywords: ISO 29864:2018, self adhesive tapes, breaking strength, elongation at break, tensile testing, adhesive tape testing.
Key topics and technical requirements
- Scope: Tests on 12 mm or 24 mm wide specimens cut from rolls, or on full rolls up to 50 mm wide (results then reflect factory cut edges).
- Methods:
- Method A - non‑reinforced tapes tested between grips (specimens typically 200 mm long).
- Method B - filament‑reinforced tapes tested around rollers to avoid crushing filaments (specimens typically 700 mm long).
- Test machine: Constant rate of extension (CRE) tensile tester; test speed 5 mm/s ± 0.2 mm/s; load and displacement recording; calibration so reading error ≤ 2%.
- Grips and rollers:
- Preferred pneumatic jaws with serrated faces (≥ 50 mm wide, 38 mm deep) to reduce slippage.
- Rollers (~100 mm diameter, ~38 mm width) used for reinforced tapes with graduated scales to monitor slippage.
- Specimen preparation and conditioning:
- Condition rolls at 23 °C ± 1 °C and 50% ± 5% relative humidity (unless otherwise specified).
- Remove 3–6 turns of tape before sampling; take five specimens per roll.
- Cutting tools: razor‑blade cutters for 12 mm and 24 mm widths; blade spacing tolerance ±0.10 mm. Avoid shear cutters for thin plastic backing.
- Reporting: Results expressed per methods for reinforced and non‑reinforced tapes (see clauses on expression of results and test report requirements).
Applications and users
ISO 29864:2018 is practical for:
- Tape manufacturers (quality control, R&D) to characterize tensile performance.
- Independent testing laboratories performing comparative and conformance tests.
- Procurement and specification writers who need objective breaking strength and elongation data for selection.
- Product development teams assessing suitability for curved surfaces or load‑bearing applications.
Practical value: consistent, reproducible tensile data for material selection, lot control, product comparisons and claims validation.
Related standards
- EN 12481 - Adhesive tapes - Terminology (referenced by ISO 29864).
- ISO/IEC Directives - general rules for ISO document preparation (informative for standard context).
For manufacturers and labs performing adhesive tape tensile testing, ISO 29864:2018 provides the authoritative procedure to obtain reliable breaking strength and elongation at break data.