Overview
EN ISO 29864:2019 (ISO 29864:2018) specifies standardized test methods for measuring the breaking strength and elongation at break of self adhesive tapes (pressure‑sensitive adhesive products) when subjected to tensile loading. Published by CEN and adopted from ISO, this document defines test specimen sizes, apparatus requirements and two test procedures-one for ordinary (non‑filament) tapes and one for filament‑reinforced tapes-to produce repeatable tensile performance data.
Keywords: EN ISO 29864:2019, ISO 29864:2018, self adhesive tapes, breaking strength, elongation at break, tensile testing
Key Topics and Requirements
- Scope and purpose: Methods to assess uniformity, quality and relative tensile performance of pressure‑sensitive tapes.
- Test specimens: Standard sample widths of 12 mm or 24 mm cut from rolls; rolls up to 50 mm wide may be tested in original width. Note: freshly cut samples can yield higher values than commercial cut edges.
- Two methods:
- Method A - for non‑filament tapes: specimen is clamped flat between two jaws and extended until break.
- Method B - for filament (reinforced) tapes: specimen is wrapped on drums to avoid crushing reinforcing filaments, then pulled until break.
- Apparatus:
- Constant Rate of Extension (CRE) tensile tester with clamp travel of 5 mm/s ± 0.2 mm/s.
- Clamps: preferably pneumatic, faces at least 50 mm wide × 38 mm deep with light serration to limit slippage. Instrument calibration error limited to ±2 %.
- Results expression: Breaking strength and elongation at break reported per the standard; guidance included for interpreting data (e.g., elongation tests on very stretchable tapes may be unreliable if specimen geometry is small).
- Significance: Useful for comparing products, selecting backing materials and tape widths for intended applications.
Applications and Users
- Tape manufacturers - in production control and product development to ensure consistent tensile properties.
- Quality control and testing laboratories - to generate comparable, validated tensile data for specifications or compliance.
- Buyers and specifiers - to compare candidate tapes for packaging, industrial bundling, masking, sealing or reinforcement applications.
- R&D teams - to evaluate the effect of backing, adhesive and reinforcement on strength and conformability.
Practical SEO phrases: tensile testing of adhesive tape, measurement of breaking strength, elongation at break standard.
Related Standards
- EN 12481 - Terminology for self adhesive tapes (normative reference).
- EN 14410:2003 - previous standard superseded by EN ISO 29864:2019.
For accurate test implementation, users should consult the full EN ISO 29864:2019 text for details on apparatus setup, sample preparation and reporting requirements.