ISO 8295 is an ISO test method for measuring the coefficients of starting (static) and sliding (dynamic) friction of plastic film and sheeting as one surface moves against another.
It is widely used to quantify “slip” behavior for quality control and product release on films used in converting, packaging, printing, and related web-handling processes. If you need help matching your film type, counterface material, and reporting needs to the standard’s intent, contact our team.
ISO 8295: Plastics — Film and sheeting — Determination of the coefficients of friction
ISO 8295 describes a laboratory method used to determine friction coefficients for plastic film and sheeting. Results are commonly used as a practical “slip” indicator for processability and handling, especially where films slide over themselves or over machine contact surfaces.
This standard is typically applied as a comparative test method for incoming inspection, process control, and lot-to-lot consistency rather than as a complete predictor of real-world machinability.
Quick Definition
ISO 8295 in one line: A method to measure starting and sliding friction coefficients for plastic film/sheeting sliding against itself or another specified counterface.
Typical outputs: Coefficient of starting friction (often treated as “static COF”) and coefficient of sliding friction (often treated as “dynamic/kinetic COF”).
What This Standard Covers
ISO 8295 focuses on friction behavior during sliding contact. In practice, labs use it to compare how easily a film starts moving and how it continues to slide under defined test conditions.
What is defined at a high level: How to obtain starting and sliding friction coefficients for film and sheeting when one surface is pulled/slid relative to another surface.
What is not the goal: A full, end-use prediction of how a film will run on every converting or packaging machine configuration.
Why This Standard Matters in Testing
COF is a key functional property for web handling. Too much friction can contribute to feed problems, wrinkling, blocking-like handling issues, or inconsistent transport. Too little friction can contribute to stacking, traction, or registration issues depending on the process.
Because ISO 8295 is often used for quality control comparisons, consistent equipment setup and consistent selection/documentation of the counterface material are critical to getting meaningful trends.
Common Materials, Product Types, or Applications Covered
ISO 8295 is commonly applied to plastic films and thin sheet products where surface slip is important.
Common examples: Packaging films, shrink/stretch films, liners and release-type films, laminated film structures, and other flexible web materials where surfaces contact rollers, plates, guides, or other webs.
Counterface options: Film-on-film measurements (two film surfaces) and film against another specified surface material used to represent an application contact.
Common Test or Verification Workflow
ISO 8295 is usually run as a repeatable bench test with controlled specimen preparation and defined contact pairing (test surface vs counterface).
Common workflow:
- Select and document the film surface(s) being evaluated and the counterface material.
- Condition samples as required by the lab or product agreement and keep handling consistent to avoid altering surface slip.
- Run starting and sliding friction measurements and report results with clear identification of the tested surfaces and counterface.
- Use results for lot acceptance, supplier comparison, process adjustments (e.g., slip additive changes), or troubleshooting web-handling issues.
Equipment Commonly Used for This Standard
ISO 8295 typically points to a coefficient-of-friction (COF) test setup designed to pull a sled or moving element across a film surface at a controlled rate while measuring force.
Common equipment elements: A COF tester or suitable motorized test frame, a force sensor/load cell, a sliding sled/fixture assembly, a flat test bed, and software or instrumentation to capture peak (starting) and steady-state (sliding) force behavior.
Procurement caution: COF results are highly sensitive to surface pairing, specimen mounting, and fixture condition. When quoting equipment, align the configuration to the counterface materials you need to run and the way you will report “starting” vs “sliding” friction for production decisions.
If you are selecting a COF system for film-on-film testing, film-on-metal/glass-type counterfaces, or higher-throughput QC work, you can request a detailed quote for an equipment package matched to your workflow.
How to Read This Designation or Revision
ISO 8295 is the base standard number.
ISO 8295:1995 includes the publication year of that edition. ISO’s catalog indicates the 1995 edition remains current (it has been reviewed and confirmed as current in 2026).
Practical tip: When customers, suppliers, or internal specifications cite ISO 8295, confirm whether they require the dated edition “ISO 8295:1995” or accept undated references that default to the current edition status.
Related Standards, Methods, or Frameworks when useful
Many organizations reference other friction methods for films depending on region, product type, or legacy requirements. When aligning requirements across customers or plants, confirm whether results are meant to be comparable across methods or only used within one method.
Often-cited related methods for film COF testing: ASTM D1894 and JIS K7125 (commonly referenced alongside ISO 8295 in film testing programs).
Talk with us about ISO 8295 COF testing
For help selecting a COF tester configuration, defining counterface materials, or aligning a QC plan around starting vs sliding friction targets, talk with our team.