Blown Film Extrusion

The structure of the screw of the blown film machine:

The screw of the blown film machine is generally composed of the following parts:

1. Film Blowing Machine Screw Body: It is usually composed of a cylindrical spiral-shaped shell with a hollow interior for conveying and compressing plastic particles.

2. Spiral channel: There is a spiral channel on the main body of the screw of the film blowing machine, which is used for the conveying and compression of plastic particles.

3. Feed part: It is used to feed the plastics into the screw body of the blown film machine.

4. Heating Zone: One or more sections of the screw body of the blown film machine are designed as heating zones with built-in heating devices for heating and melting plastic particles.

5. Extrusion Opening: The extrusion port located at the end of the screw body of the blown film machine, which is used to extrude the melted plastic to form a film.

Tech Introduction：

⁕Bimetallic Process ：