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 Automotive under bonnet labels require various tests to be carried out prior to acceptance by any of the major manufacturers. These are a few of the areas that your labels have to pass.
Automotive labels will show no evidence of blistering, wrinkling cracking, tearing, visible loss of adhesion, colour change which may affect legibility, or impairment of legibility before or after being subjected too.
Preconditioning
Standard atmosphere and relative humidity.
72 hours
Thermal Cycle Test
Expose the test samples to thermal cycles
24 hours
Humidity Test
Test samples suspended in a humidity cabinet
96 hours
Salt Spray
Test samples should be placed in a salt spray cabinet
30 days
Oil Immersion Test
Test samples should be fully immersed in hydraulic power steering fliud
144 hours
Fading
Test samples shall be subjected to Xenon arc light
250 hours
Chemical / Fluid / Solvent Resistance
Rub test with cloth soaked in subject substance, using a pressure of approximately 550g
Petrol - Standard 4 star
Petrol - Standard Unleaded
Battery Acid
Multigrade Oil
Motorcycle Oil
Diesel Oil
Windscreen Wash
Turtlewax
Colour Restorer
Antifreeze
WD40
Automatic Transmission Fluid
Diesel - Standard Diesel
Degreasent
PAS Fluid
Solvent Exposure - Adhesion
Test sample immersed in 20% solution
4 hours
Peel Strength - Adhesion Test
Samples tested on appropriate test apparatus
A: As received
B: After Humidity Test
C: After Thermal Cycle
D: After Solvent Exposure
Abrasion Test
Using a Taber Abraser test machine
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