HOW TO MAKE PVB LAMINATED GLASS WITH PVB FILM POLYVINYL BUTYRALHOW TO MAKE PVB LAMINATED GLASS WITHPVB FILM POLYVINYL BUTY...
HOW TO MAKE PVB LAMINATED GLASS WITH PVB FILM POLYVINYL BUTYRAL===========================================================...
HOW TO MAKE PVB LAMINATED GLASS WITH PVB FILM POLYVINYL BUTYRALTime: less than 25 minutes=================================...
HOW TO MAKE PVB LAMINATED GLASS WITH PVB FILM POLYVINYL BUTYRALTemperature for releasing pressure: under 50℃==============...
HOW TO MAKE PVB LAMINATED GLASS WITH PVB FILM POLYVINYL BUTYRAL=Pressure get increase too quickly: the PVB film stays cool...
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0731HOW TO MAKE PVB LAMINATED GLASS WITH PVB FILM POLYVINYL BUTYRAL(SECOND2-2)

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0731HOW TO MAKE PVB LAMINATED GLASS WITH PVB FILM POLYVINYL BUTYRAL(SECOND2-2)

  1. 1. HOW TO MAKE PVB LAMINATED GLASS WITH PVB FILM POLYVINYL BUTYRALHOW TO MAKE PVB LAMINATED GLASS WITHPVB FILM POLYVINYL BUTYRAL(2-2) BUTYRAL(2-2)By Peter Shinwww.HelloGlass.comIf the air is not expelled completely:Bubbles may appear;It may cause delamination;The laminated glass thermal stability is not good;The glass may get cracked inside the autoclave.===========================================================================================Air expelling, prepressing and edge sealing when making PVB laminated glassTwo ovens and two times of roll extrusionClean the glassTemperature: 20-25℃, humidity:25%+/- 2%Prepressing ovenPrepressing ovenCombining room:The first ovens temperature:the pre-laminated glass may get crack if the temperature is too lowThe pre-laminated glass edge will get sealed earlier than expected if the temperature is toohighThe second ovens temperature:If temperature is too low, the pre-laminated glass edge can not be sealed smoothly and theadhesion is not good;If temperature is too high, bubbles will be produced.All Rights Reserved By: 1UCOLIN SILICONE TECH(1)-Silicone Vacuuming Bag for EVA Glass Laminating Machine/Privacy Glass Laminating(2)-Silicone Sheet for EVA Glass Laminating Machine(3)-Silicone Bag for PVB Glass Laminating Auto-clave(4)-Silicone Rubber Sheet for Solar Cell Module Laminating Machine(5)-Silicone Sheet for Wood Door Vacuum Laminating Machine Vacuum Press Machine VacuumFilming MachineContact Us: uc@ucolin.com / www.ucolin.comumewe360@gmail.com/ umewe360@hotmail.com
  2. 2. HOW TO MAKE PVB LAMINATED GLASS WITH PVB FILM POLYVINYL BUTYRAL=================================================================================Conditions for prepressing and expelling air when laminating glass with PVB FilmRoll extrusion way on the flat layer:The first roller: the glass surface temperature is about 35℃, with pressure 5-7 bar; and thegap between two rollers is about 10% smaller than the glass total thickness.The second roller: the glass surface temperature is 65-75℃,with pressure 5-7bar; and thegap between two rollers is 15% -20% smaller than the glass total thickness.Vacuuming way on the curved laminating layer:Vacuum ring: silicone vacuum bagCold pumping:Temperature : 20-30℃; 22℃ is suggested.Vacuum degree: 550 -660mm HG;Time: About 5-20 minutes.Heat pumping:Glass surface temperature: 95-105℃All Rights Reserved By: 2UCOLIN SILICONE TECH(1)-Silicone Vacuuming Bag for EVA Glass Laminating Machine/Privacy Glass Laminating(2)-Silicone Sheet for EVA Glass Laminating Machine(3)-Silicone Bag for PVB Glass Laminating Auto-clave(4)-Silicone Rubber Sheet for Solar Cell Module Laminating Machine(5)-Silicone Sheet for Wood Door Vacuum Laminating Machine Vacuum Press Machine VacuumFilming MachineContact Us: uc@ucolin.com / www.ucolin.comumewe360@gmail.com/ umewe360@hotmail.com
  3. 3. HOW TO MAKE PVB LAMINATED GLASS WITH PVB FILM POLYVINYL BUTYRALTime: less than 25 minutes====================================================Air expelling when laminating safety glass with PVB FilmFactors affecting normal air expelling:Temperature required for glass is lower than 25℃, and for PVB lower than 18 ℃。Cold pumping time is at least 5-20 minutes, with temperature 22℃.Vacuum degree: absolute vacuum 80% (latm/100kPa)Vacuum rings temperature: lower than 30 ℃. 20-25 ℃ is recommended.Rheology and the grains on PVB Films surfaceGlasss thicknessEach glass is not matched very well to the other glass after hot bending====================================All Rights Reserved By:UCOLIN SILICONE TECH(1)-Silicone Vacuuming Bag for EVA Glass Laminating Machine/Privacy Glass Laminating(2)-Silicone Sheet for EVA Glass Laminating Machine(3)-Silicone Bag for PVB Glass Laminating Auto-clave(4)-Silicone Rubber Sheet for Solar Cell Module Laminating Machine(5)-Silicone Sheet for Wood Door Vacuum Laminating Machine Vacuum Press MachineVacuum Filming MachineContact Us: uc@ucolin.com / www.ucolin.comumewe360@gmail.com/ umewe360@hotmail.com=====================================Autoclave when laminating safety glass with PVB interlayer filmPurpose:Dissolves the residuary air inside the PVB filmAllows PVB film flows and combine with the glassObtain required performance and transparencyBasic condition and requirement:Temperature and pressure can get increased simultaneously, but the pressure can not getincreased to quickly.Pre-laminated Glasss constant temperature: 135-145℃Pre-laminated Glasss pressure under constant temperature: 12-14 barTime for constant temperature and pressure: at least 20 minutesAll Rights Reserved By: 3UCOLIN SILICONE TECH(1)-Silicone Vacuuming Bag for EVA Glass Laminating Machine/Privacy Glass Laminating(2)-Silicone Sheet for EVA Glass Laminating Machine(3)-Silicone Bag for PVB Glass Laminating Auto-clave(4)-Silicone Rubber Sheet for Solar Cell Module Laminating Machine(5)-Silicone Sheet for Wood Door Vacuum Laminating Machine Vacuum Press Machine VacuumFilming MachineContact Us: uc@ucolin.com / www.ucolin.comumewe360@gmail.com/ umewe360@hotmail.com
  4. 4. HOW TO MAKE PVB LAMINATED GLASS WITH PVB FILM POLYVINYL BUTYRALTemperature for releasing pressure: under 50℃=================================Autoclaves working principle when laminating safety glass with Polyvinyl Butyral PVB film:PVB film:shapeless polymerAppears adhesive under low temperatureAppears flowable under high temperatureTemperature: enable the PVB film to flow and get shaped permanentlyPressure: enhance the adhesion between PVB film and glassTime: allows PVB film to become flowableNotes: the thicker the glass, the longer time for the autoclaves cycle.===========================================Common problems for autoclave when laminating safety glass with Polyvinyl Butyral PVBfilmAll Rights Reserved By: 4UCOLIN SILICONE TECH(1)-Silicone Vacuuming Bag for EVA Glass Laminating Machine/Privacy Glass Laminating(2)-Silicone Sheet for EVA Glass Laminating Machine(3)-Silicone Bag for PVB Glass Laminating Auto-clave(4)-Silicone Rubber Sheet for Solar Cell Module Laminating Machine(5)-Silicone Sheet for Wood Door Vacuum Laminating Machine Vacuum Press Machine VacuumFilming MachineContact Us: uc@ucolin.com / www.ucolin.comumewe360@gmail.com/ umewe360@hotmail.com
  5. 5. HOW TO MAKE PVB LAMINATED GLASS WITH PVB FILM POLYVINYL BUTYRAL=Pressure get increase too quickly: the PVB film stays cool inside the autoclave; and it willcause the air running through if the glass edge was not sealed well or hot bending did notgo well.=Pressure get increase too slowly: the air rest inside the PVB film will get expanding if thetemperature increases too fast, and becomes bubbles that will rift the glass edge.=the time for constant temperature and pressure is too short:The PVB film does not flow completely, and so it can not got contact with the glasscompletelyThe adhesion becomes worse;The glass clearness will get reduced consequently=the temperature is too high when releasing pressure:The PVB film is still too hot and soft at the meantime;The high pressure air get together inside the glass edge, and get saturation;If the pressure reduce too suddenly, the air under high pressure will get expanded insidethe soft film and becomes bubbles;The air under high pressure will diffuse from the glass center to the glass edge and laterbecomes bubbles because the pressure in the edge is lower.All Rights Reserved By:UCOLIN SILICONE TECH(1)-Silicone Vacuuming Bag for EVA Glass Laminating Machine/Privacy Glass Laminating(2)-Silicone Sheet for EVA Glass Laminating Machine(3)-Silicone Bag for PVB Glass Laminating Auto-clave(4)-Silicone Rubber Sheet for Solar Cell Module Laminating Machine(5)-Silicone Sheet for Wood Door Vacuum Laminating Machine Vacuum Press MachineVacuum Filming MachineContact Us: uc@ucolin.com / www.ucolin.comumewe360@gmail.com/ umewe360@hotmail.comAll Rights Reserved By: 5UCOLIN SILICONE TECH(1)-Silicone Vacuuming Bag for EVA Glass Laminating Machine/Privacy Glass Laminating(2)-Silicone Sheet for EVA Glass Laminating Machine(3)-Silicone Bag for PVB Glass Laminating Auto-clave(4)-Silicone Rubber Sheet for Solar Cell Module Laminating Machine(5)-Silicone Sheet for Wood Door Vacuum Laminating Machine Vacuum Press Machine VacuumFilming MachineContact Us: uc@ucolin.com / www.ucolin.comumewe360@gmail.com/ umewe360@hotmail.com

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