PVB film test items
Before combining file with glass,size and performance of the PVB film have direct influence on adding it between two or several pieces of glass and the glass function.Therefore,the testing items are set to let customers have an enjoyable application.
Punching tes
Purpose: testing on adhesion
Procedure:Put the laminated glass under -20 degree
centigrade,then crash the glass by hitting it.
Frequency:Once every 3 hours
Moisture test
Purpose: check the water content rate,in order to keep strong adhesion.
Procedure:by using on-line and off-line water rate meter
Frequency:Once per roll
Roughness test
Purpose: check on the line of PVB surface
Procedure:testing with the imported roughness meter
once per roll
Frequency:Once every 3 hoursTensile strength
Purpose: estimate the penetration resistance when PVB film is impacted.
Procedure:using the extensograph to test the breaking point of PVB
Frequency:once per batchGlass mechanical testing
PVB intermediate film will affect the security performance on glass.PVB film should meet the standard as guaranteed.We are strictly sticking to international standard to test every batch of PVB film.
Anti-penetration test
Purpose:test the performance of penetration resistance
Procedure: the steel ball falls at the height of 4 meter and impact the laminated glass,but cannot penetrate the tester.Frequency:once on every batch.
Shot-bag test
Purpose:to test the impact resistance on the architectural laminated glass.
Procedure:headform falls at the height of 450mm,750mm and 1200mm to impact the glass,no penetration occurs. Frequency:once per batch
Shot-bag test
Purpose:to test the impact resistance on the architectural laminated glass.
Procedure:headform falls at the height of 450mm,750mm and 1200mm to impact the glass,no penetration occurs. Frequency:once per batch
Glass durability test
The QC department is in charge of PVB film testing,ensuring Daruihete PVB film to meet the International Safety Glass Standard.
To demonstate PVB performance including optical characteristic and durability,the data reaches up to 20 testing items.Laminated glass is long-term outdoor device.Bubbles are not allowed to come out in the long-run use.
Anti-penetration test
Purpose:test the remaining air content within the laminated glass,in case the bubbles come up after pressure.
Procedure:Put the glass into oven for 2 hours at 130 degree centigrade to check.
Frequency:once every day
Resistance-to-boil test
Purpose:testing the laminatet glass whether its water content exceeds the standard.
Procedure:Put the glass into oven for 2 hours at 100 degree centigrade to check.
Frequency:once every day
Resistance-to-radiation test
Purpose:to test what it is like when the PVB film is exposed to the sun in a long period.
Procedure:put the glass into the radiation box for 14 days to check out whether there is problem.
Optical test
Factors like light transmittance,haze and yellowing index influence largely on the optical function of PVB.The merit of Daruihete PVB film is its
excellent optical performance,which makes the laminated glass cyrstal and bright.Test of each PVB film guarantee the optical quality.