1. What is color masterbatch?

Color masterbatch, also known as color species, is a new type of special colorant for polymer materials, also known as pigment preparation (PigmentPreparation). It is composed of three basic elements: pigments or dyes, carriers and additives. It is an aggregate obtained by uniformly loading a super-normal amount of pigments or dyes in a resin. It can be called a pigment concentrate (Pigment Concentration), so his Tinting power is higher than the pigment itself. To put it simply, the color masterbatch is an aggregate made by uniformly loading super-constant pigments or dyes in the resin.

2. What are the basic components of masterbatches?

The basic components of color masterbatch are:

1. Pigment or dye

Pigments are divided into organic pigments and inorganic pigments

Commonly used organic pigments are: phthalocyanine red, phthalocyanine blue, phthalocyanine green, light fast red, macromolecular red, macromolecular yellow, permanent yellow, permanent purple, azo red, etc.

Commonly used inorganic pigments are: cadmium red, cadmium yellow, titanium dioxide, carbon black, iron oxide red, iron oxide yellow, etc.

2. Carrier

The carrier is the matrix of the masterbatch. The special color masterbatch generally chooses the same resin as the product resin as the carrier, and the compatibility between the two is the best, but at the same time, the fluidity of the carrier must also be considered.

3. Dispersant

  To promote the uniform dispersion of pigments and no longer agglomeration, the melting point of the dispersant should be lower than that of the resin, have good compatibility with the resin, and have a better affinity with the pigment. The most commonly used dispersants are: polyethylene low molecular wax, stearate.

4. Additives

  Such as flame retardant, brightening, antibacterial, antistatic, anti-oxidation and other varieties, unless the customer makes a request, the color masterbatch generally does not contain the above additives.

3. What are the varieties and grades of color masterbatches?

There are several commonly used classification methods for color masterbatches:

 Classified by carrier: such as PE masterbatch, PP masterbatch, ABS masterbatch, PVC masterbatch, EVA masterbatch, etc.

 Classified by use: such as injection masterbatch, blow molding masterbatch, spinning masterbatch, etc.

Each variety can be divided into different grades, such as:

1. Advanced injection color masterbatch:

  For cosmetic packaging boxes, toys, electrical casings and other high-end products.

2. Ordinary injection color masterbatch:

  For general daily plastic products, industrial containers, etc.

3. Advanced blown film color masterbatch:

  For blow molding coloring of ultra-thin products.

4. Ordinary blown film color masterbatch:

  It is used for blow molding coloring of general packaging bags and woven bags.

5. Spinning masterbatch:

 For textile fiber spinning coloring, the masterbatch pigment has fine particles, high concentration, strong tinting strength, good heat resistance and light resistance.

6. Low-grade color masterbatch:

  Used to manufacture low-grade products that do not require high color quality, such as trash cans, low-grade containers, etc.

7. Special color masterbatch:

  It is a color masterbatch manufactured by selecting the same plastic as the carrier according to the plastic type specified by the user for the product. For example, PP color masterbatch and ABS color masterbatch use PP and ABS as carriers respectively.

General-purpose color masterbatch: Some kind of resin (usually PE with low melting point) is also used as a carrier, but it can be applied to the coloring of other resins except its carrier resin.

8. Universal color masterbatch:

General-purpose color masterbatches are relatively simple and convenient, but have many disadvantages. It is recommended that users choose special-purpose color masterbatches.

The heat resistance grade of the special color masterbatch is generally compatible with the plastic used in the product, and it can be used with confidence under normal temperature. Only in the following cases will it cause discoloration to varying degrees, one is that the temperature exceeds the normal range, and the other is that the shutdown time is too long.

9. Compared with granulation coloring, masterbatch coloring has the following advantages:

9.1. Coloring and product processing are completed at one time, avoiding the heating process of granulation and coloring on plastics, which is good for protecting the quality of plastic products.

9.2. Simplify the production process of plastic products.

9.3. Can save a lot of power.

4. Why use color masterbatch?

 Using masterbatches has the following advantages:

1. Make the pigment better dispersed in the product:

The color masterbatch is an aggregate made by uniformly loading a super constant amount of pigment in the resin.

During the production of color masterbatches, the pigments must be refined to improve the dispersion and coloring power of the pigments. The carrier of the special color masterbatch is the same as the plastic of the product, and has good matching. After heating and melting, the pigment particles can be well dispersed in the plastic of the product.

2. It is beneficial to maintain the chemical stability of the pigment:

If the pigment is used directly, the pigment will absorb water and oxidize due to the direct contact with the air during storage and use, and after it is made into a color masterbatch, the quality of the pigment can be maintained for a long time because the resin carrier isolates the pigment from air and moisture. Change.

3. Ensure the stability of the color of the product:

The color masterbatch is similar to the resin particles, which is more convenient and accurate in metering. It will not adhere to the container when mixed, and the mixing with the resin is relatively uniform, so it can ensure the stability of the added amount, thereby ensuring the stability of the color of the product.

4. Protect the health of operators: Pigments are generally in powder form, and they are easy to fly when added and mixed, and will affect the health of operators after being inhaled by the human body.

5. Keep the environment clean and not stain the utensils:

6. Simple process, easy color change, saving time and raw materials:

Since the pigments are in direct contact with the air during storage and use, phenomena such as moisture absorption, oxidation, and agglomeration will occur. When used directly, color spots will appear on the surface of plastic products, the hue will be dark, and the color will easily fade. Dusty, affecting the health of operators. The color masterbatch is mechanically processed during the production process, and the pigment is refined, and the pigment, resin carrier, and dispersant are fully mixed to isolate the pigment from air and moisture, thereby enhancing the weather resistance of the pigment and improving the quality of the pigment. The dispersibility and tinting strength of the pigment, the hue is bright. Because the shape of masterbatch and resin particles is similar, it is more convenient and accurate in metering, and it will not stick to the container when mixing, thus saving the time for cleaning the container and the machine and the raw materials used for cleaning the machine.