Granule gravimetric side feeder for color masterbatch and plastic additives

The 4th generation of Walthmac granule gravimetric side feeder combined in total 5 patent unique techniques with Walthmac full intellectual property rights. Its feeding screw will push the raw material within high precision dynamically as set value. Plastic accessories can be scaled-down or up to coordinate with variation of main raw material. The whole system is drived by servo motor and controlled by closed-loop.


Walthmac granule gravimetric side feeder works smart with central control system which was designed in feature of self-adapting proportion control and self-correcting feeding error, consume low power, throughput per hour range from 0.05 to 40 kg per hour.


Wildly used in plastic/pharmacy/chemical industry together with extruder machine, film blown molding machine, plastic injection machine to manufacture high quality pipe/film/component which requires high level precision and complex formula control feeding.



1. User friendly HMI
2. Paten screw feeding structure with innovation technology.
3. DSP: with Walthmac full intellectual property rights..
4. International branded core hardware component.
5. Stainless steel structure.

Walthmac granule gravimetric side feeder can work with many other auxiliary equipment to control high precision formula materials feeding.


Wooden case packing with good protection.
Lifetime technique support.
Field installation service, online technical support
7-24 instant respond service.
Support EX-work, FOB, CIF terms.


Q: What is your main product?
A: Walthmac full production line covers side feeder, gravimetric blender, gravimetric dosing control system, powder feeder, vacuum raw materials conveying system.
Q: Do you have other services?
Our company's aim to meet your satisfaction, our services including best price, shipping & packaging, book cargo space, help you buy parts .
Q: How do you make our business long-term and good relationship?
A: 1. We keep good quality and competitive price to ensure our customers benefit;
2. We respect every customer as our friend and we sincerely do business and make friends with them, no matter where they come from.
Q: What to do if there is a problem with the product?
A 1.We offer 1 year running time for warranty.
2.We offer technical support for free all the time.
3.We offer the spare parts for our products all the time, any time you can contact us for spare parts.

Lightweight, flexible, and transparent, the popular Defense Shield is the latest example of how the advantages of plastics have become prominent in the COVID-19 pandemic, its easy for installation and efficiently working for health protection. Only a small new idea designed out products.
Walthmac always stay together with our clients in plastic industry chain frontier to meet real worlds’ requirement on us.

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