introduction
Color masterbatch coloring has a lot of superiority in coloring, and with the development of plastic products processing industry, especially the establishment of many joint ventures and export products to improve the color requirements, masterbatch coloring gradually dominated, The applicability of masterbatch classification, which can be divided into universal masterbatch and special masterbatch.

Special color masterbatch
In the production of masterbatch, the use of resin and the same color resin as the carrier, adding high concentrations of pigments (dyes), under the action of additives, by heating, plasticizing, mixing, extrusion granulation, Made specifically suitable for the resin of the coloring agent, known as special color masterbatch. Special color masterbatch concentration can be high or low, the general increase in the amount of 1% to 4%.

Universal Color Masterbatch
Common Color Masterbatch (also known as "Universal Color Masterbatch") and the main difference between the masterbatch is: Universal Color Masterbatch Although a resin as a carrier, but it can be applied in addition to its carrier resin other than the coloring of the resin , So called Universal Color Masterbatch.

The so-called universal masterbatch, generally take the following measures (some manufacturing plants simply do not use resin as a carrier, and all with high melting point of propylene wax as a carrier): first use low melting point, high melt index resin as a universal masterbatch Carrier, such as PE or EVA; Second, the masterbatch pigment powder ratio as high as possible, so universal masterbatch must be a high concentration of color masterbatch, injection products in the use of the general is 1%. As the masterbatch in different media carrier is very small (deduction of auxiliaries, usually about 20%), when it is further diluted to 1% in the resin to be colored, the plastic products contained in different resin content : 0.2 kg / 100 = 2 g / kg. In order to make the universal color master can be colored with other types of resin (good affinity), we have adopted other measures in the universal color masterbatch, such as the addition of special effects of coupling agent, to extend the mixing time , Which are conducive to improving the universal applicability of universal masterbatch.

What kind of masterbatch is appropriate? Is the universal masterbatch perfect? Let us from the manufacturing plant, dealers, users and economic benefits, convenience or not, the results of several aspects of products to be analyzed.

From the manufacturing plant:

In order to produce universal masterbatch must use a higher heat-resistant grade, the application of a wide range of pigments, and pigment powder temperature level to a certain extent, each increase 10 ℃ ~ 20 ℃, the cost of the pigment has increased by 50% to 100 %. When the use of a high temperature pigment made of universal masterbatch for high melting point resin coloring, when it is used, and LDPE for such a low melting point of the resin, but it is the surplus value.

For example: some dyes can be applied to ABS, HIPS some hard plastic coloring, and strong coloring, will not migrate, the cost is low, it can be made of color masterbatch can not be used in polyethylene products, because it will be serious Migration, universal masterbatch can not use it as a dye.

It is precisely because the universal masterbatch is emphasized, it is for other resin, so its use of materials has been limited, the production cost will increase, the use of sales costs also increased, but not absolute, and sometimes for some users, The cost of using a universal color masterbatch will be reduced, this is because the use of special color masterbatch ratio of 1:25, and the use of universal masterbatch ratio of 1: 100, then 1kg universal masterbatch can reach 4kg special color masterbatch , The manufacturer produces color masterbatch processing costs, per kilogram in the 5 to 10 yuan (equipment, color masterbatch quality, color masterbatch, the management level varies). Less than 3kg of color masterbatch, the processing costs by the manufacturer for the user to save, so even if the price of common masterbatch units higher, due to reduced consumption, converted into per ton of resin coloring costs, but than the use of special color masterbatch Cheap.

Some distant dealers and users often welcome Universal Color Masterbatch, in addition to save a few thousand dollars / ton of freight, the use of convenience is also a factor. Some small and medium enterprises to accept the orders, resin varieties, the production process to be constantly changing the resin, in the color requirements are not very strict circumstances, this time, the purchase of universal masterbatch, its wide applicability of the advantages of fully revealed. In addition, the less into some varieties of Color Masterbatch, both to reduce the inventory, and easy to sell; and standing in the masterbatch factory point of view, in the market competition, the lack of orders, hope to produce more special Color Masterbatch, not only can save raw material costs, and can earn some processing fees.

From the coloring effect to analyze:

As the different resin in the coloring process, the "eat color" is not the same degree, the same amount of added in different resins, the coloring effect will be different, sometimes the difference is still great. Such as ABS, HIPS its "eat color" is very powerful, and poor mobility. In this case, it is difficult to achieve a predetermined effect with a universal color masterbatch, and in turn, the wide applicability of the universal color masterbatch, although the compatibility of the carrier resin with the colored resin is negligible, does not mean that it is completely absent. Production and use of universal masterbatch units have a certain pressure, all aspects of a little careless, "hidden" problem will become a "dominant" problem.

In addition to the above-mentioned coloring color, the addition ratio is small, the dispersion is relatively poor, plastic products on the surface prone to patterns, stains, color points, still due to species and not caused by crisp and other phenomena, On the large area, thin-walled shape and complex plastic parts to attract attention, then try to use a special color masterbatch, and select the low concentration of color masterbatch to increase the amount of added to improve its dispersion (optional 1:20, 1:10 special masterbatch).

Yujie message

Through the above analysis can be seen, universal masterbatch and special masterbatch each have their advantages, but from the coloring effect and product performance for the special masterbatch is still better than the universal masterbatch. We recommend that when the user to determine the type of resin they want to color, the preferred special masterbatch.