Automotive spoiler has blow molding, single-layer plate injection molding, double-layer plate injection + welding molding, three.
I. blow molding spoiler:
The molding process is simple, but there are many working procedures, including blow molding, drilling, adding dust, polishing and painting.
Advantages:simple product structure, low mold cost.
Disadvantages: high reject rate, high cost, poor appearance quality.
Ii. Single-layer injection molding spoiler:
Process: injection - spraying - assembly.
Advantages: light weight, low cost, lightweight.
Shortcoming is: modelling compares onefold.
Iii. Double-layer plate injection + welded spoiler:
At present, double-layer plate injection + welded spoiler is widely used in passenger cars, MPV and SUV.
Process: injection - welding - spraying - assembly.
Advantage is: modelling can changeful, outside look and feel that quality is better.
Disadvantages: this process needs to add a vibration friction welding equipment and a welding fixture, the equipment input is large, the single cost is high, the product weight is heavy.