Westpak is certified to conduct product/package integrity testing to help guarantee successful delivery of products worldwide by any means of transportation.

Westpak is accredited to ISO/IEC 17025-2005, one of the most rigorous standards available for a mechanical testing laboratory.

Westpak is certified to the requirements of ISO 9001-2008 for quality management, and to ISO 14001-2004 for environmental management and sustainability efforts.

Coefficient of Friction

To determine the starting and sliding coefficients of friction for plastic film and sheeting, Westpak conducts the Coefficient of Friction (CoF) test per the ASTM D1894 test standard. The protocol allows five basic ways in which the test apparatus may be assembled. Westpak’s test setup incorporates a precision test sled apparatus, a Shimadzu load frame, and a very accurate load cell to generate test data.

Prior to testing, samples are prepared, mounted to fixture’s base and sled, and then conditioned as per ASTM D1894. The load frame is then employed to draw the sled across the bed at a pre-determined speed. Data used to determine the static (starting) and kinetic (sliding) coefficients of friction for the test specimen are obtained.

Westpak’s test equipment and methodology produces accurate and highly repeatable test results consistent with the requirements of ASTM D1894. Custom and/or proprietary client test requirements can be accommodated as well.

Typical Procedures/Protocols
ASTM 1894

Westpak Capabilities

Westpak continually upgrades and expands its equipment line-up. Therefore this list is a minimum of our capabilities:

(1) Coefficient of Friction (CoF) Test Fixture