China Glass Technologies

TIPS FOR USING SILICONE VACUUM BAG FOR GLASS LAMINATING MACHINE

TIPS FOR USING SILICONE VACUUM BAG FOR GLASS LAMINATING MACHINE .pdf

Vacuuming And Heating Instruction of Polyvinyl Butyral PVB Interlayer Film www.helloglass.com

Preheating and Exhaust of PVB Film:
After the glass and Polyvinyl Butyral PVB interlayer film is combined, there are some air between the PVB interlayer film and the glasses. PVB Interlayer Film can dissolve some of air by itself, but not very much of it. To extrude the air out, here are the methods:
+Hot roller extrude exhausting air
Hot roller exhausting air has many ways: single thermostat chamber with double rollers or double thermostat chambers with double rollers. Single thermostat chamber with double rollers: usually for laminating flat glass with Polyvinyl Butyral PVB interlayer film. When
pre-laminated glass goes through the frist roller, most of air will be squeezed out. Then the pre-laminated glass goes into the thermostat chamber to heat, then, go through second roller to extrude exhaust after heating. At this most, air isolation and edge seal is finished at the same time, the pre-laminated glass looks prey translucent while the narrow area around edge shows transparent.
The temperature control is very important, in order to expulsion of air and seal sides of pre-laminated glass successfully, temperature should be kept about 70-80 degree after going through the second roller.
If you doesn’t find the prey translucent area after the second rolling, which means the glass temperature is too low. On the contrary, if the temperature is too high, edges of the pre-laminated glass will be sealed too early, which will stop squeeze air out, then bubbles will appears in the laminated glass.
Vacuuming exhausting air
This method is specially for laminating uneven glass with PVB interlayer film, such as automobile windshield glass, bending glass. Put the pre-laminated glass into a vacuum bag or put vacuum rubber ring to seal the glass, then start the vacuum pump.
The procedure is divided into two steps: cold vacuuming period and hot vacuuming period. In the cold vacuuming period, the temperature is about 25 degrees and holding time about 15 minutes, and the negative pressure should be at least 0.8 bar. In the hot vacuuming period, temperature is about 80-110degrees, and holding time about 30 minutes. And the most suitable temperature and time of hot vacuuming exhausting air depends on the machine and producing speed.The transparency of the laminated glass is better if it’s made of the hot vacuuming exhausting air method.
High-pressure Molding of PVB Interlayer Film
The Pre-laminated glass have went through the Preheating and Exhausting Air procedure, but the whole pre-laminated glass still have air inside the laminated glass. In order to finally melt the PVB Interlayer film and exhausting all the air out, the pre-laminated glass should be put into the higher pressure laminating autoclave. There are three steps:
+Heating
Put the pre-laminated glass vertically on the bracket, make sure the space between the two pre-laminated glass is equal, so each
pre-laminated glass will get the same pressure. Make sure the pre-laminated glass not touch the metal part of the machine, to prevent the part of pre-laminated glass get too high temperature and break out. Close the autoclave and start heating. After the
temperature rise up to 50 degree. Increase the pressure inside the autoclave. It’s suggested that the speed of increasing pressure and temperature is :0.06MPA/MIN and 5 degree/min. If the temperature and pressure is not synchronous, please adust the machine. If temperature is too fast, then stop increasing the temperature until the pressure catch up, vice verse .
+Maintaining Pressure Stage:
The temperature and pressure are very important parameters for making laminated glass successfully. When the temperature and pressure reach to the setted point (like 120-140 degrees), pay attention to these two parameters carefully. If the temperature is lower than 130 degree, the pressure time should be longer.But if the temperature is lower than 120 degree, it’s not helpful to keep the pressure time longer. And the laminated glass may be not adhesive or not very strong. If the pressure is less than 1.2-1.4MPA, the time for pressure should be longer, but at the same time, the temperature should be 120-140 degrees. If the temperature is higher than 160 degree, the PVB interlayer film will turn yellow. And the laminated glass is failure. + Cooling with pressure stage
After the maintaining pressure stage, it’s time to cooling the laminated glass. Still maintain the pressure and open the cooling water to reduce the temperature. When the temperature reaches 45 degree, start to reduce the pressure. When open the autoclave door, check the temperature of the laminated glass up and down, make sure the temperature of the laminated glass is even. Don’t reduce the pressure too early, otherwise the bubbles would appear on the edges of the laminated glass.

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 Mail: cnc@cncnext.com
Web: www.CNCnext.com
benext77@gmail.com/
benext77@hotmail.com

Vacuuming And Heating Instruction of Polyvinyl Butyral PVB Interlayer Film www.helloglass.com

Preheating and Exhaust of PVB Film:
After the glass and Polyvinyl Butyral PVB interlayer film is combined, there are some air between the PVB interlayer film and the glasses. PVB Interlayer Film can dissolve some of air by itself, but not very much of it. To extrude the air out, here are the methods:
+Hot roller extrude exhausting air
Hot roller exhausting air has many ways: single thermostat chamber with double rollers or double thermostat chambers with double rollers. Single thermostat chamber with double rollers: usually for laminating flat glass with Polyvinyl Butyral PVB interlayer film. When
pre-laminated glass goes through the frist roller, most of air will be squeezed out. Then the pre-laminated glass goes into the thermostat chamber to heat, then, go through second roller to extrude exhaust after heating. At this most, air isolation and edge seal is finished at the same time, the pre-laminated glass looks prey translucent while the narrow area around edge shows transparent.
The temperature control is very important, in order to expulsion of air and seal sides of pre-laminated glass successfully, temperature should be kept about 70-80 degree after going through the second roller.
If you doesn’t find the prey translucent area after the second rolling, which means the glass temperature is too low. On the contrary, if the temperature is too high, edges of the pre-laminated glass will be sealed too early, which will stop squeeze air out, then bubbles will appears in the laminated glass.
Vacuuming exhausting air
This method is specially for laminating uneven glass with PVB interlayer film, such as automobile windshield glass, bending glass. Put the pre-laminated glass into a vacuum bag or put vacuum rubber ring to seal the glass, then start the vacuum pump.
The procedure is divided into two steps: cold vacuuming period and hot vacuuming period. In the cold vacuuming period, the temperature is about 25 degrees and holding time about 15 minutes, and the negative pressure should be at least 0.8 bar. In the hot vacuuming period, temperature is about 80-110degrees, and holding time about 30 minutes. And the most suitable temperature and time of hot vacuuming exhausting air depends on the machine and producing speed.The transparency of the laminated glass is better if it’s made of the hot vacuuming exhausting air method.
High-pressure Molding of PVB Interlayer Film
The Pre-laminated glass have went through the Preheating and Exhausting Air procedure, but the whole pre-laminated glass still have air inside the laminated glass. In order to finally melt the PVB Interlayer film and exhausting all the air out, the pre-laminated glass should be put into the higher pressure laminating autoclave. There are three steps:
+Heating
Put the pre-laminated glass vertically on the bracket, make sure the space between the two pre-laminated glass is equal, so each
pre-laminated glass will get the same pressure. Make sure the pre-laminated glass not touch the metal part of the machine, to prevent the part of pre-laminated glass get too high temperature and break out. Close the autoclave and start heating. After the
temperature rise up to 50 degree. Increase the pressure inside the autoclave. It’s suggested that the speed of increasing pressure and temperature is :0.06MPA/MIN and 5 degree/min. If the temperature and pressure is not synchronous, please adust the machine. If temperature is too fast, then stop increasing the temperature until the pressure catch up, vice verse .
+Maintaining Pressure Stage:
The temperature and pressure are very important parameters for making laminated glass successfully. When the temperature and pressure reach to the setted point (like 120-140 degrees), pay attention to these two parameters carefully. If the temperature is lower than 130 degree, the pressure time should be longer.But if the temperature is lower than 120 degree, it’s not helpful to keep the pressure time longer. And the laminated glass may be not adhesive or not very strong. If the pressure is less than 1.2-1.4MPA, the time for pressure should be longer, but at the same time, the temperature should be 120-140 degrees. If the temperature is higher than 160 degree, the PVB interlayer film will turn yellow. And the laminated glass is failure. + Cooling with pressure stage
After the maintaining pressure stage, it’s time to cooling the laminated glass. Still maintain the pressure and open the cooling water to reduce the temperature. When the temperature reaches 45 degree, start to reduce the pressure. When open the autoclave door, check the temperature of the laminated glass up and down, make sure the temperature of the laminated glass is even. Don’t reduce the pressure too early, otherwise the bubbles would appear on the edges of the laminated glass.

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 Mail: cnc@cncnext.com
Web: www.CNCnext.com
benext77@gmail.com/
benext77@hotmail.com

Attentions For Electric Soldering Iron When Making Smart Glass Film Busbar By Peter Shin Lin

Attention One:
Before using Electric Soldering Iron, please check if the voltage is suitable.

Attention Two:
If it’s first time the Electric Soldering Iron is used, some smoke appearing is normal, and the smoke will disappear soon. But please make sure the working room is good at air ventilation.

Attention Three:
The heating device is made of ceramics, so it’s not very good at impact resistance, please use with care.

Attention Four:
Please don’t change the devices of the Electric Soldering Iron unless you are professional. And don’t change devices when the power is on.

Attention Five:
If you need the file of “HOW TO MAKE BUSBAR OF SMART GLASS FILM”, Please feel free to contact us.

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 Mail: cnc@cncnext.com
Web: www.CNCnext.com
benext77@gmail.com/
benext77@hotmail.com

END.
UPDATED ON 2 MAY 2012

Attentions For Electric Soldering Iron When Making Smart Glass Film Busbar.pdf

Bubbles at Edges of Laminated Glass with Polyvinyl Butyral PVB interlayer film PETER SHIN LIN
www.helloglass.com

Condition:
Small bubbles at the edges of safety laminated glass with Polyvinyl Butyral PVB interlayer film.

Reason: 1)
When the autoclave decreasing the pressure, although the temperature detector shows the temperature is under 50 degree Celsius, due to the glass thickness and square, sometimes, the glass temperature is still higher than 50 degree Celsius, so if the pressure is lowering, some air will absorbed into the glass edges.

Solution:
Even when the temperature detector shows the temperature is lower than 50 degree, don’t decrease the pressure too hurry, wait for some minutes, make sure the real temperature of the glass is lower than 50 degree. If the laminated glass is thick, or many layers, or large square, then the waiting time should be a little longer.

Reason:2)
The tempered glass is not high quality enough, and the plainness of the tempered glass is not good enough.

Solution:
Choose better quality tempered glass, or use the thicker Polyvinyl Butyral PVB interlayer film.

Reason:3)
Maybe the detector of the temperature and pressure is not correct.

Solution:
Make sure the temperature and pressure parameters is correct .

ALL RIGHT 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 Mail: cnc@cncnext.com
Web: www.CNCnext.com
benext77@gmail.com/
benext77@hotmail.com
Bubbles at Edges of Laminated Glass with Polyvinyl Butyral PVB interlayer film .pdf

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

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® 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® 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® 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.pdf