Glass Treatments Quality Problems
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
