Masterbatch exists, change people plastic single, low-end impression, so home products, automobiles, home appliances, office supplies, etc., become colorful, Art. Currently masterbatch technology becomes more mature, so to speak masterbatch change lives, improve product quality. Xiao Bian today Yujie offer this article, you understand masterbatch with gorgeous world.

 
 What is a masterbatch?

A: The pigment masterbatch = + vector + auxiliaries. Generally, the carrier is a thermoplastic resin of the toner has a good wetting and dispersing effect, and has good compatibility masterbatch is currently the most common method of coloring plastics.

1. pigment or dye
Pigments are divided into organic pigments and inorganic pigments, commonly used organic pigments include: phthalocyanine red, phthalocyanine blue, phthalocyanine green, light red, red molecules, macromolecules yellow, Permanent Yellow, Violet, azo red. Commonly used inorganic pigments are: cadmium red, cadmium yellow, titanium dioxide, carbon black, red iron oxide, iron oxide yellow.

Figure: Toner
2. The carrier
It is masterbatch matrix. Dedicated masterbatch generally choose products resin the same resin as the carrier, both the compatibility of the best, but we must consider the carrier mobility. If the resin friends do not understand, you can click the blue connector: → Fig DuPont take you into a world of plastic

3. Dispersant
Prompting the pigment uniformly dispersed and no agglomeration should be higher than the melting point of the resin dispersant is low, and the resin has a good compatibility, and pigments have good affinity. The most commonly used dispersants are: low molecular weight polyethylene wax, stearic acid salts and the like. If you want to learn more about friend dispersant, you can click the blue connection: → type and optional requirements of the dispersant, you really understand?

Figure: Dispersants - polyethylene wax

4. Additives
The flame-retardant, brightening, anti-bacterial, anti-static, anti-oxidation, and other varieties, unless the customer requests, under normal circumstances do not contain the above additives masterbatch.
 
 Mother craft color tablets

1. Ingredients: weightlessness measurement scales
By automating weightlessness measurement scale, product formulations according to the proportion of the configuration of various raw materials, ensure that all raw and auxiliary materials to meet the proportion of product formulation requirements. .

2. The melt-extruded twin-screw extruder
Materials are weight loss scale automated feed into the twin-screw extruder, the material is heated by electricity, shearing the mixture was melt-mixed, mainly material extrusion, melting, shear mixing, vacuuming, and then cutting and other steps, so each additives uniformly dispersed in the polymer, and the polymer melt through the extruder die orifice extrusion die.

Figure: masterbatch pelletizing process

3. cooling circulating water cooling
Use of recycled water or air from the extruder the polymer melt is cooled to a solid state.

4 air-dry blower
The cooling water on the dry polymer strands.

5. pelletizing granulator
The polymer strands were pelletized to obtain a plastic particles.

6. sieving shaker
Clear too long, too short, which do not meet the requirements of the particle size of plastic particles to obtain compliance with the size of particles of plastic products.

7. homogenized horizontal mixer
Particulate modified plastic body into the homogenization homogenization warehouse, each warehouse to ensure uniformity of the material.

8. Packaging machines, electronic scales

By weight of the product specified in installation package, and printing product name, grade, color number, weight and production lot number of characters in the bag.
NOTE: masterbatch pelletizing coloring and coloring has the following advantages: coloring products processing and once completed, the heating process to avoid granulation coloring plastics, plastic products for the protection of good quality; make the production process of plastic products, the most simplified; You can save a lot of energy.
 
 Female color classification

By carrier classification: such as PE masterbatch, PP masterbatch, ABS masterbatch, PVC Color Masterbatch, EVA masterbatch, etc.
By Application: Masterbatch such as injection molding, blow molding Masterbatch, Color Masterbatch spinning like. All varieties can be divided into different levels, such as:
1. Advanced injection masterbatch
For cosmetics packaging, toys, electrical enclosures and other advanced products.

Figure: Advanced injection masterbatch for cosmetics packaging

2. ordinary injection masterbatch
For general household plastic products, industrial containers.

3. Common blown masterbatch
Usually for blow coloring bags, woven bags.

4. spinning masterbatch
Used in textile fiber spinning colored masterbatch pigment fine particles, high concentration, tinting strength, heat resistance, light resistance.

Figure: masterbatch used in sports seats

 Advantages masterbatch

Masterbatch advantage

The dispersion of the better
Masterbatch pigment production process must be refined, so as to improve dispersion and coloring pigments. Special varieties of the same plastic masterbatch carrier and product, with good matching, pigment particles well dispersed in the plastic products after the heating and melting.

Health protection of the operator
Powdered pigments are generally added and mixing easy flying, affect the health of the operator will be inhaled.

Ensure stable color products
Masterbatch particles and resin particles are similar in more convenient and accurate measurement, it does not adhere to the container mixed with the resin mixture more uniform, thereby ensuring that the added amount of stability, thus ensuring product color stability.
 
Maintain a clean environment, easy to use

Figure: different kinds of masterbatch
 

Masterbatch shortcomings

Poor predictability of the coloring effect
Colored masterbatch is used, universal masterbatch pigment in different plastics will exhibit different colors, so poor coloring effect of predictability.
Affect other properties of plastic products
Especially the impact strength, the product is easily deformed, distorted, more pronounced for engineering plastics
Higher costs
Universal masterbatch in order to 'general', often use a higher heat level of pigment, resulting in waste.