Why are there stain marks to be found on the fabric adjacent to the zip?
Check for any solution / sprays / polishes being used on the zip teeth. Check for any excess oil being used on sewing threads if sewn application or check temperature of heat seal if sealed zip application.
Why are there stain marks to be found on the leather adjacent to the zip?
Check for any solution / sprays / polishes being used on the zip teeth. Check for any tanning chemical residues on the surface of the leather. Check that the zip has been ordered with Protecto Treatment to prevent any reaction of the pigments In the leather with the copper of the zip.
Why is the oxidation or plating finish being lost during the washing process?
Ensure an M46 or M60 zip is being used. Ensure zip slider is closed during washing and ensure the button is fastened where ever possible to protect the teeth with the fly piece. If button is not present protect the zip from the the chemicals of the washing process using a piece of cotton fabric. […]