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What Is The Reason For Aluminum Foil To Produce Oil Spots?
Mar 09, 2017

Residual oil on the surface of the rolling oil and other oil, after annealing on the surface of the foil to form a different degree of yellow exposed markings called oil spots.

The main reason for the production of oil spots: aluminum foil rolling oil cat degree is high, or rolling oil range is not appropriate; aluminum foil rolling oil infiltration of mechanical oil; improper annealing process; rolling process product surface oil is too large; Slitting tension is too large, causing the foil to roll too tight.

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