Typically between the hot and cold treatment the one which suffer the most from quality problems is the second because its application happens in a far less controlled environment and furthermore involves a greater number of bottles per time.
DROP IN SCRATCH RESISTANCE
CAUSES: – Dirty spraying guns – Too high dilution – Wrong guns orientation
SOLUTIONS: – Increase hot deposition and homogeneity – Increase the temperature of application – Increase the concentration
LABELLING ISSUES
CAUSES: – Humidity in the plant – Incompatible glue – Application speed
SOLUTIONS: – Surface tension should be >= 38 DYN – More homogeneous deposition – Increase the concentration
BACTERIA PROLIFERATION IN THE FILTERS
CAUSES: – Non filtered tap water – Non scheduled cleaning – Material been uncorrectly stored
SOLUTIONS: – Clean pipes with alchool – Use Polyglas D4218 M with double sterilizer
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