Basic parameters
(1) Product requirements
1. Product name: PVB intermediate membrane
2. Die width: 1200mm
3. Product thickness: 0.76mm
4. Product width: 1000mm
5. Single layer extrusion: one main extrusion (reserving one auxiliary extrusion position and interface)
(2) Main materials
1. Resin:
Bulk density: 18-23g/100ml
Moisture content: ≤ 2%
Softening point: 65 ℃
Melting point: 90-100 ℃
2. Plasticizer:
Specific gravity: 0.97g/ml
Melting point: -50 ℃
Boiling point: 342-343 ℃
PH: 6.24
3. Crushed material: fragmented
Bulk density: 410-420g/L
Particle size: 2.5-12mm
4. Melt:
Temperature: 160-240 ℃
Viscosity: 1500-3000pas
2, Product Flow Chart (by Supply Scope)
Feeding unit - extruder - coarse screen changer - melt pump - fine screen changer - static mixer - distributor - die head - water tank - air knife - stretching - heat treatment - shaping - winding