Defeitos e danos na pintura

501-36-16 Paint - General Information 501-36-16 DESCRIPTION AND OPERATION Paint damage caused by tree resin or sap Small yellow-brown marks or drops on the horizontal parts of the vehicle. The drops melt in sunlight. Resin damage only occurs in the warm summer months. Cause/damage pattern: ‡ Because of their chemical composition, tree resins combine with or adhere very well to paint top coats and cause them to swell. The higher the temperature, the more intensive is the chemical bonding between the resin and the paint topcoat surface. TO BE UPDATED LATER Repair of damage: ‡ Soak several times using a cloth saturated with a petrol & paraffin mixture. NOTE: After successful cleaning the top coat must be preserved. ‡ Swellings can be removed by warming. Paint damage from aphid secretions Small, round, matt marks about 1 mm diameter and etching with small islands down to the filler. Fresh aphid excrement looks like small drops of honey. Cause/damage pattern: ‡ Aphids produce a mixture of starch, leaf acid and sugar from sap in leaves. Under the effects of warming and moisture this can turn into alcohol. ‡ The round shape of the damage and the island of intact paint are typical. TO BE UPDATED LATER Repair of damage: ‡ Remove the excrement as soon as possible. ‡ Small single matt locations without etching can be repaired using a polishing repair. Paint damage caused by tar spots Yellow or dark marks. Cause/damage pattern: ‡ Firmly stuck spots of tar which lead to discoloration of the surface. In some cases penetration through the clear lacquer into the top coat. TO BE UPDATED LATER Repair of damage: ‡ Clean the paint surface with tar remover and polish. Paint damage caused by cement, plaster and slaked lime Damage appears as whitish matt marks on the top coat. Cause/damage pattern: ‡ Corrosive alkaline compounds interacting with moisture.