White Masterbatch: The Key to Brightness, Durability, and Versatility in Plastic Production
- 1. General definition of White Masterbatch
White masterbatch is a masterbatch additives which concentrated mixture of Titanium Dioxide (TiO2), carrier resin and various auxiliaries. It is used in the plastic industry to impart a white color to various plastic products during the manufacturing process.
The main colorant is Titanium Dioxide with content is around 20-80%.
Meanwhile, polyethylen & Polypropylen resin are the popular carrier of white masterbatch which is used to Us Masterbatch partners. It has the characteristics of heating softening, cooling hardening and no chemical reaction. The resin is evenly distributed in the process by melting and shearing. In order to ensure the compatibility between the carrier and the colored plastic, the same kind of resin is usually selected as the carrier, which is conducive to better dispersion of the colorant.
Dispersants are auxiliaries, which make the coloring agent disperse evenly in the resin and do not coalesce. At present, the commonly used dispersing agents are polyethylene wax, stearate and ethylene glycol.
According to the usage and performance requirements of the products, various additives, such as antistatic agent, antioxidant, brightener, light stabilizer, foaming agent, antimicrobial agent, matting agent, flame retardant and so on, should be added to the preparation process of white masterbatch, so as to endow the plastic products with special functions
White masterbatches can be divided into ordinary color masterbatches and functional color masterbatches according to their special functions. Ordinary color masterbatches can satisfy the coloring of plastic products. Functional color masterbatches give special functions to plastic products while coloring them, such as making colored plastic products have antistatic, weather resistance, foaming, antibacterial, extinction and resistance
- Main Features of White Masterbatch
2.1. Enhances opacity and brightness
White color masterbatch gives the base polymer a uniform and constant white hue by adding premium titanium dioxide (TiO2) and other additives.
2.2. Improves color consistency in final products
By precisely dosing and dispersing white masterbatch in the base polymer, manufacturers can easily remove the possibility of color changes during the manufacturing process
2.3. Economic Advantages
Highly filled with calcium carbonate and low composition of titanium dioxide. Most suitable for one-time use commodity like shopping bags, where price is the main consideration.
2.4. Facilitates customization and versatility
It can be customized to meet different requirements of the final products. For example, the material can be formulated with the UV protection attribute to protect the plastic items from UV rays. Since the underlying plastic is protected from damaging UV rays by the titanium dioxide particles in the masterbatch, which both scatter and absorb UV energy, white masterbatch is an ideal option for outdoor applications where UV degradation can cause color fading and shorten the life of the product.
2.5. Safe for Food Packaging
Because of white masterbatch’s characteristics, it is widely used in the plastic industry, especially in the production of plastic packaging, which is completely safe for human health. Us masterbatch products have been recognized by BSCI and have FDA certification.
- Applications:
White masterbatch is applied widely in plastic production as a essential element that can not be replaced:
Casting film, PE/ PP injection molding
Extrusion Multi-layer or Mono layer PE film
Coating film
PP Thermoforming such as PP or HIPS sheets for cups, plate etc
Woven sacks & FIBC bags
In conclusion, white masterbatch is an additive that is added to a base resin to enhance its physical and optical properties, providing plastic products with their signature white color and increasing overall durability. White masterbatch is widely used in many different industries such as automotive, building and construction, electronics, packaging, and more; supplying the products with the specific whites needed while elongating the product’s life.
