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Masterbatch

Industrial Applications and Processing

The processing of color masterbatch has strict requirements for mixing process and equipment: pigments, additives and basic resin components must be absolutely and completely accurately measured, and then uniformly dispersed and mixed into the basic resin through the mixing system such as twin-screw extruder and internal mixer.

The concept "color masterbatch" describes a resin matrix that has additives or pigments concentrated in it. Color masterbatch is for the most part a standard 3-5mm measure molecule, and there are too 1mm microparticles. Accordingly,

Color masterbatches are typically divided into three categories: white, black, and color, depending on the various types of pigments used. Premixing, separate addition, or color matching processes can be used in the production of color masterbatch.

At present, most of the domestic color masterbatch production, pigments, additives and basic resin components are premixed, and the formula is completed by simple metering and conveying device or manually before premixing; This process has low degree of automation, poor accuracy of formula and great environmental pollution. In recent years, in the production of black-and-white masterbatch, the weight loss scale is used to increase the separate addition process, which improves the accuracy and stability of the formula and reduces environmental pollution.

Measurement plan

  • Color Matching Process
  • Replace with Blending Process

1. Feed bin

2. Refill valve

3. Feed tube

4. Loss-In-Weight batch feeder

5. Twin screw extruder

The color matching process is generally a high-end application. Different toners are fed separately using a loss-in-weight feeder and added to the extruder, where the plastic is mixed to produce the desired color product. The matrix resins commonly used in this process are PE, PP and PA, PET. Accurate loss-in-weight feeders ensure acceptable final product quality.

Typical raw material composition

- Resin: particles, bulk density 0.5-0.7Kg/L; good fluidity

- Toner: powder, bulk density 0.2-0.4Kg/L; poor fluidity

- Auxiliary: powder, bulk density 0.2-0.4Kg/L; general fluidity

- Auxiliary: mixing of granules and powder, bulk density 0.3-0.4Kg/L; general fluidity

Process characteristics

- Each raw material is individually cut and accurately measured, so it is very simple and convenient in batching operation

- Just clean the toner feeder and refill section

- The site is relatively clean and easy to control

- It has certain advantages for production lines that require a certain color change frequency

- The toner and other raw materials are not soaked in advance, so the dispersion requirements of the extruder are relatively high

Common equipment composition

- Refill bin

- Refill valve

- Loss-in-weight feeder

- Aggregate silo

- Twin screw extruder or continuous mixer

SS45 loss-in-weight screw feederSS72 Loss-in-Weight Screw FeederST22 Loss-in-weight Screw FeederST36 loss-in-weight screw feederST50 loss-in-weight screw feeder


Advantage of Sonner Loss in Weight Feeders:

- Even a small amount of feeding can ensure stable feeding accuracy

- Excellent anti-bridging performance, our flow control is more accurate in the face of difficult-to-feed toner

- Tool-free quick-release design makes clean replacement easy



1. Big bag discharge station                  

2. Refill valve                                            

3. Feed tube                                             

4. Loss-In-Weight batch feeder               

5. Bag dump station                                

6. vacuum receiver                                   

7. Feed bin

8. Vacuum filter

9. Vacuum blower

10. collection hopper

11. High speed mixer

12. Volumetric feeder

13. Twin screw extruder

In the premixing process, all toners, additives, and base resin raw materials are mixed in a mixer in advance. It is then added to a twin screw extruder or internal mixer for processing, usually using a volumetric feeder.

Typical raw material composition

- Resin: particles, bulk density 0.5-0.7Kg/L; good fluidity

- Toner: powder, bulk density 0.2-0.4Kg/L; poor fluidity

- Auxiliary: powder, bulk density 0.2-0.4Kg/L; general fluidity

- Auxiliary: mixing of granules and powder, bulk density 0.3-0.4Kg/L; general fluidity

Process characteristics

- A certain soaking time required for the dispersion of the colored masterbatch, and the requirements for the downstream molding machine are relatively low

-It is best to make a single product, the cleaning workload of the high-speed mixer is relatively large

- The power consumption of the high-speed mixer is also relatively large

Common equipment composition

- Ton bag feeding station

-Particle conveying device

- Feeding silo: Provides raw material buffer for weight-reduced feeders;

- Feeding valve: controlled by the weight-reducing feeder, when the weight-reducing feeder enters the replenishing stage, the valve opens automatically.

-Batch weight reduction feeder: adopt the working principle of weight reduction scale, carry out batch measurement, and measure according to the set batch output

-High-speed mixer

UM18G04UM18G06UM50G04UM50G06


Advantage of Sonner Loss in Weight Feeders:


-Independent batch weight loss control technology, which is more efficient than weight gain batches

- Modular free combination, stronger ability to adapt to recipes

-Quick release design makes cleaning easy


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Sonner Equipment Consultant

Hello! I am Miss Sun. If you need to consult the equipment model or installation and debugging problems, you can add my enterprise wechat, and we will make the measurement process scheme suitable for your enterprise!

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