Overview
EVA Vs PVB
Comparison Of Plastic Films
| Description | Plastic Film | ||
| EVA | PVB | ||
| Technical Data | Density | 0.97 g/cm3 | 1.07 g/cm3 |
| Bonding Temperature | ≤ 100℃ | 140℃ | |
| Flow Temperature | 80℃ | 90℃ | |
| Flow Rate | 1.2 cm3/s℃ | 0.4 cm3/s℃ | |
| Haze Rate | 1% | 0.4% | |
| Visible Light Transmission | ≥ 85% | ≥ 88% | |
| UV Screening | 98% | 99% | |
| Luminous Efficiency | 87% | 88% | |
| Water Absorption (23℃ for 24 hrs) | 0.1% | 3.6% | |
| Tensile Strength at Break | 290 kg/cm2 | 339 kg/cm2 | |
| Elongation at Break | 2340 kg/cm2 | 455 kg/cm2 | |
| Colour Availability | Excellent | Good | |
| Compatibility to Various Design Interlayer Materials | Excellent | Fair | |
| Adhesion to Glass & Polycarbonate | Excellent | Fair | |
| Orientation of Water Moisture | No | Yes | |
| Handling | Room Temperature | Climatic Control Required | |
| Film Cost | Fair | Costly | |
| Film Availability | Many Qualified Suppliers | Few Qualified Suppliers | |
Comparison of Laminated Glass
| Description | Laminated Glass | |
| EVA | PVB | |
| Anti-Shatter Peel Off | Excellent | Good |
| Inert with Sealants and Adhesives | Excellent | Good |
| Anti-Delamination | Excellent | Good |
| Impact Strength | Good | Excellent |
| UV Aging for 3000 hrs (JIS) | No Visible Change | No Visible Change |
| Environmental Resistance | No Visible Change | No Visible Change |
| Heat Resistance (100℃ for 3 months) | No Visible Change | No Visible Change |
| Moisture Resistance (50℃ at RH 95%) | No Visible Change | No Visible Change |
Comparison of Laminated Glass Production
| Description | Laminated Glass Production | ||
| EVA | PVB | ||
| Autoclave | Autoclave | No | Yes |
| Careful Operation and Maintenance | N/A | Yes | |
| Occupy Space | N/A | Yes | |
| Pit Construction Required for Foundation | N/A | Yes | |
| Water Circulation Cistern Required for Cooling | N/A | Yes | |
| Pre-Laminating Facilities | Climatic Control Room | No | Yes |
| Air Conditioner | No | Yes | |
| Dehumidifier | No | Yes | |
| Roller Conveyor | No | Yes | |
| Roller Press | No | Yes | |
| Heating Oven | No | Yes | |
| Space Occupied | Little | Large | |
| Labor Force | Few | More | |
| Labor Working Environment | Room Temperature in Free Space | Dry and Cold Inside Climatic Control Room | |
| Power Consumed per m2 of Glass | Low | High | |
| Operating Cost | Low | High | |
| Maintenance Cost | Low | High | |
| Production Cycle | Short | Long | |
| Production Type | Batch | Continuous | |
| Variable Glass Thicknesses Production | Feasible Within Same Batch | Always Constant Thickness | |
| Production Process | One Single Step | Several Steps | |
