Three-Layer Coextrusion Extruder #1 Material #F1 Extruder #2. Material ##2 Material #3 Extruder #3 Fig.10.9
6 Extruder #1 Extruder #2 Extruder #3 Material #1 Material #2 Material #3 Three-Layer Coextrusion Fig.10.9
Extrusion Cast Film Line Layout Extrusion die Chill roll Material roll Extruder Edge trimmer ig.10.57
7 Extrusion Cast Film Line Layout Extruder Extrusion die Chill roll Edge trimmer Material roll Fig.10.5
Machine direction Orientation From extruder casting rolls Rotation x1×2X3X4 Fjg.10.8
8 Machine Direction Orientation Rotation x 1 x 2 x 3 X 4 From extruder casting rolls Fig.10.8
Cross Direction Orientation Eⅹ trusion die Extruder Casting Rolls Tenter Clips-Annealing Zone Fig10.8
9 Extruder Casting Rolls Annealing Zone Extrusion Die Tenter Clips Cross Direction Orientation Fig.10.8
Blown-fillm Die cross-section ↑个个个个个个 Bubble constantly pulled up Bubble Frost line Cooling air ← Cooling air Dⅰ e core Die lip adjusting bolts Die bod Plastic from extruder Blow-up air inlet he die is often rotated to prevent gauge bands ig106
10 Bubble Blow-up air inlet Cooling air Cooling air Plastic from extruder Die lip adjusting bolts Die Body Die core Frost line Bubble constantly pulled up Blown-film Die Cross-Section Fig.10.6 The die is often rotated to prevent gauge bands