Pre-dispersed Pigment and Single Pigment Concentration

With the continuous development of the industry, today’s plastic coloring processing and molding is moving towards trends of large-scale equipment, highly automated production, high-speed operation, continuous refinement and standardization of products. These trends resulted in many ultra-fine, ultra-thin and ultra-micro products, which require higher standards of pigment dispersion. In addition, the demands of high efficiency, environmental protection, energy saving and cost reduction are also increasing. Because the general plastic molding processing equipment (such as: injection molding machine, spinning machine or single screw extruder, etc.) cannot provide the shear force required for pigment dispersion during processing, the pigment dispersion work is usually undertaken by professional manufacturers-pigment suppliers or color masterbatch manufacturers.

Pre-dispersed pigment (Also known as Pigment Preparation or SPC-Single Pigment Concentration) is a high concentration of a single pigment. According to the characteristics of different pigments, the general pre-dispersed pigment contains 40-60% of the pigment content (the effective content of the pre-dispersed pigment produced by our company can reach 80-90%), and processed by a special process through specific equipment. Effective dispersion methods and strict quality control make the pigments contained show the finest particle form to achieve the best color performance. The appearance of pre-dispersed pigment can be fine pow particles with the size of about 0. 2-0.3mm, and the product can also be made into particle with the size of common color masterbatches. It is precisely because the pre-dispersed pigment has such obvious characteristics that it is increasingly used in the manufacture of color masterbatches.

The pre-dispersed pigment has the following advantages

 • Since the pigment is completely dispersed, it has a high color strength. Compared with the use of powder pigments, the color strength can generally be improved by 5-15%.

 • Homogeneous processes require only minimal shear mixing forces to achieve the desired results. For example, high-quality color masterbatch products can be made with simple equipment (such as a single screw). Adapt to all kinds of extrusion equipment, stable quality, flexible production scheduling.

 • Pre-dispersed pigment works to achieve the perfect color performance: color brightness, transparency, gloss, etc.

 • Eliminate dust flying in the production process, improve the working environment and reduce pollution.

• No equipment fouling, simplifies equipment cleaning during color conversion.

• Fine and uniform pigment particles can prolong the service life of the filter screen, reduce the replacing time of the filter screen and improve the production efficiency.

• The appearance of the product is uniform without mutual stickiness, which is suitable for various feeder models; the conveying process is not bridged or blocked.

• Eliminates the need to disperse pigments and significantly increases the capacity of existing masterbatch production facilities.

• Can be used with other colorants, with strong applicability.

• Various dosage forms, suitable for different carrier resin forms, good mixing performance.