Polyvinyl butyral is a clear polymer that is commonly used in laminated bullet-proof glass and safety glass for automotive wind-shields. PVB was first discovered in 1927 and has been a staple of the laminated glass product market since the late 1930s. PVB is manufactured from PVA by reacting it with butyraldehyde.
Printing with PVB can produce unparalleled levels of clarity after it has been post-processed with some simple polishing. PVB is also very ductile, allowing it to deform without losing its strength; this is why PVB is used in bullet-proof/safety glass.
PVB is considered to be quite easy to print with; the settings required are comparable to the settings required for PLA. PVB is relatively low warp so can be used to print bigger parts. The print temperature range is around 190°C to 230°C. A heated bed can be used up to 70°C to improve adhesion if need be. PVB is hygroscopic so will absorb moisture from the atmosphere, leading to bubbling that could potentially damage your printer. Read our blog article on how to store 3D printing filaments.
If you are looking for a strong, easy to print filament that you can achieve excellent polishing and clarity with then PVB is an excellent option. Here at Filaments.directory you can select the right PVB filament using our constantly updated list of suppliers and our comprehensive search tool!