Vanishing pen marking – Case #627

September 1, 2017


shoe quality control

“A picture is worth a thousand words”. Practical solutions to problems encountered in the manufacturing process that demonstrate how we assist our customers’ factories to produce Right from the Start TM.

Problem: vanishing pen marking is not visible in normal temperature but after keeping the shoes at a cold temperature for 24 hours it appears.

shoe quality control

Impactiva solution: we got the factory to clean the marking areas with MEK solvent and check random pairs with Butane Gas for the reappearance of vanishing pen marks.

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Stay tuned for more Impactiva technical solutions to every day production problems.