End-user a PVC film German manufacturer, requires automatic online continuous dosing for film extrusion with rigid PVC film recycled, CaCO₃, PVC powder, and masterbatch. Mconvey provides a complete solution for online continuous precise dosing and automatic feeding of multiple raw materials, and control integrated into End-user’s film extrusion line.

Project Challenges
- PVC film material is flaky, fluffy, and has low bulk density, posing challenges in handling poor flowability.
- CaCO₃ powder material has poor flowability, requiring solutions to prevent bridging and wall adhesion.
- Masterbatch addition requires accurate dosing and easy cleanup for frequent color changes.
- Integration and synchronous control of various dosing equipment with the existing extrusion line.

Automatic Dosing Solution
Mconvey has over 10 years’ experience in equipment R&D, manufacturing and project applications experience for precise dosing of powders, granules, and liquids. they provided Loss-In-Weight feeders for powder capable of handling materials with poor flowability and adhesion issues. These systems feature 360-degree anti-bridging and anti-adhesion effects, easily processing fluffy powder materials and low-bulk-density materials like CaCO₃ and talc, which are prone to bridging. Additionally, for frequent color changes, Mconvey’s gravimetric doser allows rapid manual color switching, enabling easy color changes within 3 minutes. As all dosing equipment and related automatic feeding systems are entirely self-developed and manufactured by Mconvey, Mconvey has unique advantages in control integration of its equipment.





