Masterbatch production process

Masterbatch production process

In this section, you will learn about the masterbatch production process. We will also examine the factors that affect masterbatch production and the characteristics of a superior masterbatch. Masterbatch is a widely used additive in the manufacturing industry that provides coloring and functional properties to various plastic products. The masterbatch production process using advanced technologies will also be depicted under the title of the masterbatch manufacturing method. Kaysa Polymer Company has been operating as a manufacturer and supplier of colored, black, and white masterbatches, polymer additives, and compounds for more than 20 years. For information about buying and selling masterbatch and information about color quality, please call +982122500033.

Table of content

Selection of raw materials

In the masterbatch production process, the selection of raw materials is a differentiator that directly affects the final quality of the masterbatch. To make a high-quality masterbatch, it is very important to choose high-quality raw materials.

Masterbatch raw materials can include several elements. The first step in the masterbatch production process is the careful selection of raw materials. These typically include dyes or pigments, carrier resins, and common polymer bases including polyethylene, polypropylene, polyvinyl chloride, and ABS. Additives such as stabilizers against UV rays and… The choice of materials depends on the desired properties and performance of the masterbatch.

By choosing the right and quality raw materials, we can produce masterbachi with superior performance, high strength, and excellent quality.

Mixing process

In the masterbatch production and manufacturing industry, the mixing process is one of the important steps that creates the best combination and distribution of raw materials in the masterbatch. In this step, the raw materials are optimally mixed to make a proper density and homogeneity in the masterbatch. Different methods are used for mixing raw materials in masterbatch production. The most common method is melt compounding, in which polymer bases and dyes are mixed to produce polymer beads. Another method is pre-mixing, where raw materials are mixed into a powder form before further processing.

Also, raw materials must be ground using special equipment to achieve optimal particles in the masterbatch. This process reduces the particle size and creates a higher efficiency level in the masterbatch.

Using advanced technologies in the mixing process, the masterbatch is produced with high quality and homogeneity and with suitable mechanical properties; This guarantees the quality and better performance of the masterbatch in the final products.

Different types of mixing and grinding equipment are used to produce masterbatch. Some of the most common ones are:

High-speed blenders: use rotating blades to mix ingredients quickly and efficiently.
Hammer mills: use a hammer to crush materials into smaller pieces
Roller mills: using rollers to crush and compress materials into smaller pieces.

Choosing the right equipment depends on the type of masterbatch, desired properties, and production volume.

تولید مستربچ

Compounding and extrusion

After the raw materials are mixed, the next step in the masterbatch production method is compounding and extrusion. At this stage of the masterbatch manufacturing process, the mixture is transferred to specialized equipment such as an extruder, where it is melted under heat and completely mixed to ensure the homogeneity of the masterbatch. The molten mixture is cooled by passing through the water bath and cut into granules for ease of use.

Quality control and testing

Quality control in masterbatch production is a process that is carried out to ensure the compliance of the final product with the desired specifications and requirements. This includes conducting a series of tests and inspections at different stages of production. Testing raw materials that include:

Visual inspection: to check appearance defects such as impurities, pigments and foreign particles.
Physical tests: to determine properties such as bulk density, viscosity, and melting point.
Chemical tests: to determine the concentration of pigments, additives and other components.

Tests in the production process:

Temperature and pressure control: to ensure mixture uniformity and complete cooking.
Mixing speed control: to prevent separation of pigment and impurities.
Sampling: To check product quality during the production process.

final product:

Physical tests: To determine properties such as tensile strength, impact, and Young’s modulus.
Color tests: to determine color, transparency and hiding power.
Chemical tests: to confirm the concentration of pigment, additives and other components.
Functional tests: To evaluate the performance of the masterbatch in various processes such as injection molding, filming and extrusion.

In addition to these tests, masterbatch manufacturers must have a comprehensive documentation system that includes records of all raw materials, manufacturing processes, and test results. This helps them track and resolve any issues that may occur in the manufacturing process, as well as ensure ongoing compliance with legal and regulatory requirements.

Quality control equipment in masterbatch production

Some of the common equipment used for masterbatch quality control are as follows:

Volumetric mass measuring devices: to determine the density of raw materials and final products.
Viscometers: to measure the viscosity of the polymer melt.
Infrared radiography: to identify the chemical components of raw materials and final products.
Optical Spectrometers: To measure color and clarity of masterbatch.
Tensile devices: to measure the tensile strength and Young’s modulus of Masterbatch.
Impact devices: To measure the impact resistance of the masterbatch.

Masterbatch quality control is essential to produce high quality plastic products that have the desired properties and performance. By conducting rigorous tests and inspections, masterbatch manufacturers can ensure that their products meet customer requirements and regulatory standards.

Packaging and distribution

The product is packed in suitable containers or bags after producing the masterbatch and passing the quality control tests. Labeling and recording product information such as product name, base polymer type, production date, etc. is necessary to ensure easy identification of the product. Then the masterbatch is distributed to different manufacturers for use in plastic products. With more than 20 years of experience in producing all kinds of masterbatch, Kaysapolymer company can supply and produce the products you want. For more information, call +989034719105.

How to prevent masterbatch contamination in the production process

Use of preventive measures that you can take to avoid contaminating the masterbatch in the production process:

Choose reliable sources: Before buying raw materials for masterbatch production, carefully check the sources of supply. Be sure to choose suppliers who have a good track record of providing quality raw materials.

Proper storage of raw materials: It is necessary to store raw materials in proper conditions. Maintaining the temperature and humidity of the environment in the ideal range prevents contamination and undesirable changes in raw materials.

Utilization of up-to-date equipment: ensuring that the equipment and devices used in the production process are in good working condition and compatible with industry standards. Regularly inspect and troubleshoot equipment.

Quality Control: Implement a strict and accurate quality control system in the masterbatch production process. This includes inspection of samples and quality tests to identify any potential contamination and defects.

Cleaning the devices: To prevent the transfer of contamination to the masterbatch, it is very important to regularly clean the devices. Clean carefully, especially in the case of extruders and storage containers.

Personnel Training: Train your personnel on the health and safety of the production process. Show them how to take care and what precautions to take regarding pollution prevention and hygiene.

Environmental management system: The implementation of environmental management system, such as the use of air conditioning and air pollution control, can help reduce the possibility of pollution and improve the conditions of the production process.

The above preventive measures can help you to produce pure and uncontaminated masterbatch in the masterbatch production process and guarantee the quality of your products.

Note: To apply preventive measures and prevent contamination in the production process, it is recommended to always cooperate with the masterbatch manufacturer and use appropriate equipment and devices.

فرایند ساخت مستربچ

Does the mixing method in masterbatch production affect the final quality of the product?

Yes, the mixing method in the masterbatch production process can have a direct effect on the final product quality. Choosing the right method for mixing the masterbatch is very important in ensuring the uniformity of color, distribution of added materials and mechanical properties of the masterbatch. Below we examine the effect of mixing methods on masterbatch quality:

Color uniformity:

The mixing method must ensure that the pigments and minerals are uniformly distributed in the polymer. If the distribution is improper, colored dots or white dots may form in the masterbatch, which is not acceptable in appearance.

Distribution of additives:

The mixing method should distribute additives such as pigments, minerals and additives evenly throughout the masterbatch. If the distribution is inappropriate, the mechanical and other properties of the masterbatch may be incomplete and the final product may perform poorly.


The mixing method should avoid contamination of the masterbatch. If the equipment and mixing process are not properly adjusted, there may be contaminated or large particles in the masterbatch and affect the final quality of the product.


The mixing method must have repeatability. It means that every time the same mixing method is used, the same results will be obtained. This is very important to maintain the quality and standard of the product.

In general, choosing and using the right mixing method in masterbatch production can help improve the final quality of the product and ensure the uniform distribution of additives.


The masterbatch production process, as reviewed, includes careful selection of raw materials, mixing, compounding, extrusion, quality control, and packaging. Each step is critical to ensure the quality and performance of the final product. By understanding the manufacturing process, manufacturers and masterbatch users can make informed decisions about their specific needs.

Yes to some extent, but with caution and considering various factors such as the type of masterbatch, production method and desired properties.

The order of the masterbatch production steps can be changed to some extent, but this must be done with care and depends on various factors, including:

Masterbatch Type: Masterbatches can be produced with a wide variety of pigments, additives and other components. The type and proportion of these raw materials can affect the sequence of production steps.
Production method: Masterbatches can be produced using various methods such as high speed mixers, extruders and mills. Each production method has its own advantages and disadvantages that can affect the sequence of steps.
Desired Properties: The final properties of the masterbatch, such as color, clarity, and strength, must be considered when determining the sequence of production steps.

In general, the masterbatch production process usually includes the following steps:

Preparation of raw materials: This involves measuring, mixing, and heating raw materials such as pigments, additives, and base polymer.
Mixing: The raw materials are mixed in a high-speed blender to create a uniform mixture.
Extrusion: The molten mixture is passed through an extruder, which turns it into granules or pellets.
Cooling: Granules or pellets are cooled quickly to prevent degradation.
Packaging: Masterbatch is packaged and prepared for storage or shipping.

In some cases, it may be necessary to change the order of the steps. For example, if the masterbatch is produced with a pigment that is heat sensitive, it may be necessary to perform the mixing step at a lower temperature. Or, if the masterbatch is produced with an additive that dissolves slowly, it may be necessary to run the mixing step for a longer time.

Changing the order of the masterbatch production steps should be done carefully and only by qualified personnel. Any change in the process can affect the final product quality.

A premium masterbatch has several features that set it apart from other masterbatches. These features are generally divided into the following categories:


Uniform Pigment Dispersion: Pigment particles must be evenly distributed throughout the polymer matrix to ensure uniform color and transparency in the final product.
High thermal stability: The masterbatch must be heat resistant and not destroyed during the production process.
High chemical resistance: The masterbatch must be resistant to chemicals that may come into contact with it during the production process or in the final application.
Compatibility with the base polymer: The masterbatch must be compatible with the base polymer with which it is used to ensure optimal physical and mechanical properties.


Strong color: The masterbatch should provide a strong, bright color that does not fade in the finished product.
High-transparency: The masterbatch should not significantly reduce the transparency of the base polymer.
High-strength: The masterbatch should not significantly reduce the tensile or impact strength of the base polymer.
High-processability: The masterbatch should be easily mixed and processed with other raw materials.


Low VOC content: Masterbatch should have low levels of volatile organic compounds (VOCs) to avoid health and environmental problems.
FDA Compliant: Masterbatch must be FDA approved for food contact use if intended.
Free from heavy metals: Masterbatch should be free from heavy metals such as lead, cadmium and mercury, which can be harmful to health.

Masterbatch mixing and milling are important because, in these steps, the composition and distribution of the raw materials are improved. This creates the desired quality and properties in the masterbatch.

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