FAQ and its solution

Categories:Technical support
Time of issue:2020-05-09 00:00:00
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Description:

Information

Problem description	Reason analysis	Solution
Bubbles or lack of film	Lack of vacuum degree, vacuum bag’s leak	Change or repair vacuum bag to ensure vacuum system work well
	Lacks of vacuum time	Longer the vacuum time according to the process craft for reference
	Film wets	Lower the warehouse humidity
	EVA film contaminated	Keep EVA film clean, no use film contaminated by oil,dust or other chemical substances
	Taking out of laminated glass from oven when the temperature more than 60～70 ℃	Longer vacuum time till the glass surface temperature lowered to below 60℃
	Temperature raises too fast	slow down heating temperature speed of the first time
	Process temperature too high	Control well oven’s temperature base on actual size of the laminated glass
Low adhesion strength or Edge grinding permeating water	Low heating temperature or short of keep time of heating temperature	Adjust heating temperature and its keeping time according to the process craft
	Glass surface not clean	Clean the glass ensure it dry and not contaminated by oil and dust
	Surrounding humidity is too high	Dry the glass
	EVA film contaminated by oil or chemical substances like alcohol	Change clean EVA film
	EVA film out of use	Ensure the storage environment, use it asap once opened or seal it if not used out. Please make small sample to ensure its adhesiveness if stock of long time
Not very clear	EVA film is seriously affected by damp.	The film should be stored in dry and low temperature environment(the temperature needs less than 30℃or less than 25℃ ). For the film which is seriously affected by damp, you can cool and dry the film.
	EVA film is seriously affected by damp.
	The temperature of the glass does not reach the temperature required by the processing craft or the glass heating hour is not enough.	Have a good control of the temperature of the glass. According to the products’ specification, adjust the processing craft appropriately.
	The heating temperature is uneven.	Find the reason why the heating temperature of the glass is uneven and make it even.
Turning yellow	Product formulation problem	Change EVA film
	high humidity and temperature to store the film	Improve the storage environment, Increase the dehumidifier or cooling equipment
	The film has been stored for too long.	Do not use the expired EVA film.