Change people for plastic masterbatch, single, low-end impression, make household products, automobile, home appliances, office supplies, etc., become colorful, become works of art. At present domestic masterbatch technology is more and more mature, but compared with foreign enterprises, there are still some gaps, especially high-end masterbatch, still need to work, catch up with the clariant, shulman and other well-known pigment enterprises.

A. what is the color masterbatch?

A: carrier pigment masterbatch = + + additives. Generally speaking, the carrier is a thermoplastic resin, to have good wetting and dispersing agent, and have good compatibility, masterbatch is currently the most common plastic coloring method.

1. The pigments or dyes

Pigment is divided into organic pigments and inorganic pigments, commonly used organic pigments are: phthalocyanine red, phthalocyanine blue and phthalocyanine green, fast, bright red, red, macromolecule macromolecular yellow, solid yellow, and perhaps forever purple, azo red, etc. Common inorganic pigments are: cadmium red, cadmium yellow, titanium dioxide, carbon black, iron oxide red, iron oxide yellow, etc.

2. The carrier

Is the substrate masterbatch. General selection and dedicated masterbatch products of the same resin resin as the carrier, the compatibility of the best, but at the same time, also want to consider the carrier mobility.

3. The dispersant

To paint evenly dispersed and are no longer together, dispersant of melting point should be lower than the resin, has good compatibility with resin, and pigment has good affinity. The most commonly used dispersant is: low molecular polyethylene (PE) wax, stearic acid salt, etc.

Additive in 4.

Such as flame retardant, brightening, antibacterial, antistatic, antioxidant and other varieties, unless the customer request, generally does not contain the above additives masterbatch.

B.the mother color grain of granulation process

1. Ingredients: weightlessness JiLiangCheng

Weightlessness JiLiangCheng through automation, according to the product formula ratio, the configuration of all kinds of raw and auxiliary materials, ensure that all kinds of raw and auxiliary materials meet the requirements of the product formula.

2. The melt extrusion twin screw extruder

Material is weightless scale automatic feeding into the twin screw extruder, the material by the electric heating, melting blend mixture shearing action, mainly material extrusion, melting, shear mixing, vacuum, then steps, such as shear to various kinds of additives evenly dispersed in polymer, and the polymer melt through the extruder die die extrusion head.

3. The cooling circulating water tank

The use of circulating water or air cooling of from extruder extrusion of polymer melt into solid.

4. Air drying fan

Then blow dry cooling water on polymerization material bar.

5. Cutting grain cutting machine

To diced article polymer materials, plastic particles.

6. Sieve sieve

Clearance is too long, too short, do not conform to the requirements of the particle size of plastic particles, plastic particles within the specified size.

7. Homogenization horizontal mixer

Will be modified plastic body into granular homogenizing silo homogenization, ensure each warehouse material uniformity.

8. Package packing machine, electronic scale

The product in accordance with the provisions, the weight of the package, and spray on packaging printing product description, grade, color number, weight and batch number etc.

Note: the color shading compared with granulation coloring has the following advantages: a complete coloring and products processing, avoid the heating process of plastic granulation shaded, it is good for protecting the quality of plastic products; Make plastic products the most simplified production process; Can save a lot of electricity.

C. mother color classification

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

Classification according to the use, such as injection of masterbatch, blowing masterbatch, spinning, masterbatch, etc. And each type can be divided into different levels, such as:

1. Advanced injection masterbatch

Used in cosmetics packaging, toys, electrical appliances and other advanced products.

2. Common injection masterbatch

For general daily plastic products, industrial containers, etc.

3. Advanced film blowing masterbatch

Used for blow molding ultra-thin products color.

4. Ordinary blown film masterbatch

For general packaging bags, woven bags blowing shading.

5. Spinning masterbatch

Used in textile fiber spinning color, pigment pigment particles, high concentration, strong tinting strength, heat resistance, good light fastness.

6. Low-level masterbatch

Used in the manufacture of low-level products of color quality request is not high, such as trash can, low-level containers, etc.

D. the advantages and disadvantages of masterbatch

1. The advantages

Make a better dispersion

Masterbatch production process need to refine the pigment, in order to improve the dispersion of pigment and tinting strength. Dedicated masterbatch carrier of the same as the products of plastic varieties, good match, after heating molten plastic pigment particles can be dispersed well in products.

To keep the paint chemical stability

Paint is commonly powder, adding and mixed easily float in the sky, after being inhaled will affect the health of the operator.

Protect the health of the operator

Paint is commonly powder, adding and mixed easily float in the sky, after being inhaled will affect the health of the operator.

Ensure the stability of the product color

Pigment particles and resin particles close, more convenient and accurate in measurement, mixed won't stick on the container, and the mixture of resin is relatively uniform, stable, so can ensure that the amount of so as to ensure the stability of product color.

Keep the environment clean, easy to use

2. Mother color chip faults

Shading effect of foresight

Pigment is used for coloring, general mother color pigment in different plastic can present a different color, so the color effect of predictability is poorer.

Affect other properties of the plastic products

Especially the impact strength, the product easy to deformation, distortion, the engineering plastic is more apparent

The high cost

Universal masterbatch in order to be able to 'general', tend to choose high heat-resistant grades of pigment, wasteful.

E. the masterbatch common problem

1. Under the sunlight, products are in the paint with stripes?

2. Use some color mother, products seem more easily broken?

3. The color master the directions according to the proportion of after use, color too deep (shallow)?

4. The same pigment, resin and formulation, and different injection molding machine injection depth is why the color of the products have?

5. Change another brand of resin, the same color and formula, color is changed, is this why?

6. Pigment dye migration occur in the process of storage will affect the quality of the products?

7. Why do some injection products luster?

8. After a period of time, some plastic products fade phenomenon will happen?

9. Why ABS color female particularly prone to color difference?