Last article i wrote about the cautions of processing laminated glass with EVA FILM.
Today I would like to talk about the parameters of EVA FILM for laminated glass you should care about. And I also would explain how to test these parameters.
1. Radiation Resistance——the most important parameter. It does decide how many years the Laminated Glass with EVA Film can be used for outdoor.
How to test:
Make the laminated glass with EVA FILM subjecting to 2000 hours (different form different standard) of radiation. The samples of laminated glass with EVA Film are placed at a distance of 1,100mm from 16 ULTRAVITALUX lamps which was form a 1m*1m field. The temperature is maintained at 45℃ (5℃ tolerance )and the humidity is 50%.
To measure the durability, the luminous transmission has been measured by the wavelength between 380nm and 780nm before 2,000 hours of exposure to the ULTRAVITALUX lamps.
In the end, compare the differences of Light Transmittance and check the presence of any faults(bubbles, opaqueness, degumming etc)
To be continued
All rights reserved by the EVA FILMS BLOG www.evafilms.com
