Yes, the plastic film blowing machine can blow out colored plastic film directly. There are several ways to achieve this:
1. Add masterbatch
Add masterbatch to plastic raw materials (such as PE, PP, etc.), mix them evenly and then melt and extrude them in the film blowing machine. The blown film will show the corresponding color. This is the most common and economical coloring method, with stable color and suitable for mass production.
2. Add liquid colorant
Add liquid colorant to plastic raw materials, stir them evenly with the screw and extrude them. This method has uniform coloring effect and is suitable for products with high color requirements.
3. Use pre-colored plastic particles
Directly use the colored plastic particles for film blowing without adding masterbatch or colorant. This can ensure color stability, but the cost is high and it is suitable for mass production with specific color requirements.
4. Co-extrusion
Using multi-layer co-extrusion blown film process, different extruders supply molten plastics of different colors respectively, and can produce two-color or multi-color films, such as a colored layer on the surface and transparent or other colors inside.
Regardless of the method, it is necessary to choose the appropriate coloring scheme according to customer needs, product use and production costs.
