Risk of color migration – Case #511

“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: risk of color migration from the black PU upper material on to the white outsole wall.

Impactiva solution: we got the factory to attach a transparent PVC welt of 35mm width and 1.1 mm thick on the feather edge area of the outsole to avoid color migration on to the white outsole. This procedure will not affect the sole bonding or cause lip opening. After adding the PVC welt, we tested sole bonding with a result of 24.63 Kg.

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