FINGERPRINT AFFINITY AND EASY-TO-CLEAN
Introduction

In our daily life, all kinds of particles, natural and artificial fat as well as sweat and other contaminants could easily be transferred from the human finger to the product surface, and the fingerprint/imprint will become visible. You may discover those contaminant imprints on the piano paint of the car interior, or on the touchscreen and display products. This will not only bring a negative impression on the appearance of the product, but also creates further damage due to its chemical stresses.

Principle

Human beings tend to clean and remove those disturbing contamination imprints, and this cleaning procedure is named as the “easy-to-clean” or “cleanability” property of the surface. Therefore, it is of great importance to evaluate with both optical and quantitative tools for the affinity property to determine whether your product surface is prone to the contaminants or not, and additionally, whether the imprints can be easily cleaned/removed.

Background

The surface of car display is susceptible for any imprints generated by the daily use of human beings.

 • The fingers and hands casually transfer certain contaminants such as sebum, dirt and a mixture of hand lotion and hygienic gel onto the display surface.

 • People tend to clean those" contaminants" either by dry cleaning or under "liquid" condition, e.g. disinfection spray, glass cleaner...

 • Fingerprint affinity: display surfaces are more prone to fingerprints than others.

 • Cleanability/Easy-to-clean: the ability of the contaminantsto be cleaned differs for various display surfaces

Test Scope

The surface of car display is susceptible for any imprints generated by the daily use of human beings.

 • The fingers and hands casually transfer certain contaminants such as sebum, dirt and a mixture of hand lotion and hygienic gel onto the display surface.

 • People tend to clean those" contaminants" either by dry cleaning or under "liquid" condition, e.g. disinfection spray, glass cleaner...

 • Fingerprint affinity: display surfaces are more prone to fingerprints than others.

 • Cleanability/Easy-to-clean: the ability of the contaminantsto be cleaned differs for various display surfaces

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