Delamination Analysis of Laminated Glass with Polyvinyl Butyral PVB Interlayer Film

Delamination Analysis of Laminated Glass with Polyvinyl Butyral PVB Interlayer Film

CNC-Shield® PVB INTERLAYER FOR AUTOMOTIVE WINDSHIELD GLASS
CNC-Shield® PVB INTERLAYER FOR AUTOMOTIVE WINDSHIELD GLASS

Condition One: Delamination Appears in Lines

Reason:
When combining the glass with the Polyvinyl Butyral PVB interlayer film, some folds occur , or some place of Polyvinyl Butyral PVB interlayer film is too thin due to the hard pulling of the Polyvinyl Butyral PVB interlayer film. Especially the place near the hole or edges,  some Polyvinyl Butyral PVB interlayer film have been shrink, so the Polyvinyl Butyral PVB interlayer film is too thin or even gone between the too glasses.

Solution:
When combining the glass with Polyvinyl Butyral PVB interlayer film,  pull the Polyvinyl Butyral PVB interlayer film gently, make sure no fold of Polyvinyl Butyral PVB interlayer film, and the Polyvinyl Butyral PVB interlayer film is 2mm wider than the glass. And also cut the Polyvinyl Butyral PVB interlayer film gently.

 

Condition Two: Delamination in Edges and Holes of Laminated Glass with Polyvinyl Butyral PVB Interlayer Film

Reason:
The plainness of the edges and holes of the tempered glass is not good.

Solution:
Adjust the plainness of the tempered glass, clip the edges of the pre-laminated glass before putted into the autoclave. But don’t use too big clips, in case the PVB Film’s shape changes.

 

Condition Three: Delamination on Edges and Holes After the Laminated Glass is Installed in the Building

Solution: Install the laminated glass gently. it’s better if use the wrench with scale to hole the laminated glass. Make sure the glass glue is suitable for the laminated glass, and it should be neutral glue.

Condition Four: Irregular Delamination of Laminated Glass with Polyvinyl Butyral PVB Interlayer Film


Reason1:
The Adhesion of Polyvinyl Butyral PVB interlayer film and glass is not strong.

Solution1:
The washing glass water is not good quality, it’s better use the water whose electric conductivity is lower than 20us.

Solution2:
The Polyvinyl Butyral PVB interlayer film absorbed too much moisture, maybe more than 6%. If moisture of Polyvinyl Butyral PVB interlayer film is higher than 1%, the laminated glass may appear white haze.

Solution3:
The combination of pre-laminated glass and roller exhausting air stage maybe not operate correctly, which lead to Polyvinyl Butyral PVB interlayer film not reacted perfectly. The main parameters are temperature, pressure and time.

Solution4:
The glass surface is not clean and dry enough.

Reason2:
The Polyvinyl Butyral PVB interlayer film is too thin.
Solution:
Use thicker or more layer of Polyvinyl Butyral PVB interlayer film.

Reason3:
The plainness of the tempered glass is not good.
Solution: Choose better quality tempered glass.

 

Condition Five: Delamination of Laminated Glass with Polyvinyl Butyral PVB Interlayer Film When in Boling Water Test

Reason1:
Two much air contained inside the laminated glass with Polyvinyl Butyral PVB interlayer film.

Solution1:
Sealing the edges too early in the pre-pressure exhausting air stage, which lead to the air stocked inside the laminated glass. Although, it seams successful when the laminated glass come out from the autoclave, but when in the boiling test, the bubbles will appears.

Reason2:
The Polyvinyl Butyral PVB interlayer film has absorbed too much moisture before laminating.

Solution2:
Adjust the storage conditions, make sure the moisture of Polyvinyl Butyral PVB interlayer film is less than 0.55%.

Copyright:

 

CNC PVB EVA SMART FILM
CNC PVB EVA SMART FILM

All rights reserved by CNC-INTERLAYER TECH:
【1】CNC-Force® EVA INERLAYER FOR ARCHITECTURAL LAMINATED GLASS
【2】CNC-Smart® SMART FILM FOR PRIVACY SWITCHABLE GLASS
【3】CNC-Shield® PVB INTERLAYER FOR AUTOMOTIVE WINDSHIELD GLASS
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Web: www.CNCnext.com
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Bubbles in Middle of Safety Laminated Glass of CNC-Shield® Polyvinyl Butyral PVB

Bubbles in Middle of Safety Laminated Glass of CNC-Shield® Polyvinyl Butyral PVB

CNC-Shield® Polyvinyl Butyral PVB
CNC-Shield® Polyvinyl Butyral PVB

Reason Possibility 1:
In the procedure of roller exhausting air, it’s too early to seal the edges of the pre-laminated glass, so the air can not be exhausted out completely in the second roller.

Solution:
Adjust the speed and temperature in the pre-laminating procedure, make sure the pre-laminated glass is not sealed before the second roller exhausting air stage.  Or adjust the speed of and temperature of the silicone rubber ring, to make sure the air is totally exhausted out.
Reason Possibility 2:
The Polyvinyl Butyral PVB interlayer film already absorbed too much moisture.

Solution:
Check the moisture of the Polyvinyl Butyral PVB interlayer film, and the humidity of the laminating room and glass surface.

Reason Possibility3:
The plainness of the tempered glass is not good enough.
Solution:
Choose good quality tempered glass, or use thicker Polyvinyl Butyral PVB interlayer film.

 

 

 

CNC-Shield® PVB PRODUCT DATA

CNC-Shield® PVB PRODUCT DATA
CNC-Shield® PVB PRODUCT DATA

 

CNC-Shield® PVB:

“CNC-Shield®Super-Clear(Colorless)”

“CNC-Shield®Blue Top Shade On Super Clear”

“CNC-Shield®GreenTop Shade On Super Clear”

“CNC-Shield®Colored Light Blue”

“CNC-Shield®Colored Light Green”

CNC-Shield® PVB Modified 3Key Properties Specially for Automotive Windshield

CNC-Shield® PVBPolyvinyl Butyral PVB
CNC-Shield® PVBPolyvinyl Butyral PVB

CNC-Shield® PVB Specially Modified Polyvinyl Butyral PVB Interlayer Film Properties: Safety and Security

Laminated glass with CNC-Shield®Polyvinyl Butyral PVB interlayer film has SPECIALLY strong elasticity. CNC-Shield®Polyvinyl Butyral PVB interlayer film have GREAT impact resistance, and also have GREAT penetration resistance. The shatters will be sticked together by the CNC-Shield®Polyvinyl Butyral PVB interlayer film. And the safety of laminated glass is remained.Whether the laminated glass with CNC-Shield®Polyvinyl Butyral PVB interlayer film is installed vertically or horizontally,the accident impact on laminated glass with CNC-Shield®Polyvinyl Butyral PVB interlayer film is still working great. Performance of resistance and penetration of CNC-Shield®Polyvinyl Butyral PVB interlayer film is better than normal PVB Film.

CNC-Shield® PVBPolyvinyl Butyral PVB
CNC-Shield® PVBPolyvinyl Butyral PVB

CNC-Shield® PVB Specially Modified Polyvinyl Butyral PVB interlayer Film Properties: Sound Control

CNC-Shield®Polyvinyl Butyral PVB interlayer film has great sound insulation, it can high decrease the noise, and make you comfortable inside the car. The CNC-Shield® Polyvinyl Butyral PVB interlayer film is better normal PVB interlayer in sound insulation .

CNC-Shield® PVBPolyvinyl Butyral PVB
CNC-Shield® PVBPolyvinyl Butyral PVB

CNC-Shield® PVB Specially Modified Polyvinyl Butyral PVB interlayer film Properties: Light Control

CNC-Shield®Polyvinyl Butyral PVB interlayer film can absorb 99% ultraviolet radiations, because of special auxiliaries inside the CNC-Shield®Polyvinyl Butyral PVB interlayer film. So the laminated glass with CNC-Shield®Polyvinyl Butyral PVB interlayer film can protect people and furniture, plastic goods, etc inside the cars from harmful ultraviolet rays. And also CNC-Shield®Polyvinyl Butyral PVB interlayer film can absorb infrared lights, so the laminated glass with CNC-Shield®Polyvinyl Butyral PVB interlayer film can insulate heat from the sun-lights.

CNC-Shield® PVBPolyvinyl Butyral PVB
CNC-Shield® PVBPolyvinyl Butyral PVB

CNC-Shield® PVB:

“CNC-Shield®Super-Clear(Colorless)”
“CNC-Shield®Blue Top Shade On Super Clear”
“CNC-Shield®GreenTop Shade On Super Clear”
“CNC-Shield®Colored Light Blue”
“CNC-Shield®Colored Light Green”

 

CNC-Shield® Polyvinyl Butyral PVB for Automotive Windshield Glass

BLUE TOP SHADED ON SUPER CLEAR
BLUE TOP SHADED ON SUPER CLEAR

CNC-Shield®Polyvinyl butyral PVB Interlayer Film for Automotive Windshield Glass

Blue Top Shaded on Super-Clear

Thickness: 0.76mm

Transmittance: ≥85% of Super-Clear, 5%~30% of Blue Shade

GREEN TOP SHADED ON SUPER CLEAR
GREEN TOP SHADED ON SUPER CLEAR

CNC-Shield®Polyvinyl butyral PVB Interlayer Film for Automotive Windshield Glass

Green Top Shaded on Super-Clear

Thickness: 0.76mm

Transmittance: ≥85% of Super-Clear, 5%~30% of Green Shade

BLUE TOP SHADED ON LIGHT GREEN
BLUE TOP SHADED ON LIGHT GREEN

CNC-Shield®Polyvinyl butyral PVB Interlayer Film for Automotive Windshield Glass

Blue Top Shaded on Light Green

Thickness: 0.76mm

Transmittance: ≥75% of Light-Green, 5%~30% of Blue Shade

GREEN TOP SHADED ON LIGHT BLUE
GREEN TOP SHADED ON LIGHT BLUE

CNC-Shield®Polyvinyl butyral PVB Interlayer Film for Automotive Windshield Glass

Green Top Shaded on Light Blue

Thickness: 0.76mm

Transmittance: ≥75% of Light-Blue, 5%~30% of Green Shade