Masterbatch

A master batch is a product in which pigments and/or other additives are already optimally dispersed in a carrier material, that is compatible with the main plastic in which it will be let down.

Masterbatch is made through chemistry accessory ingredients, carrier resins, and dispersants. It is composed of an ultra quantity of pigments (dyestuffs) that carries evenly in the resin.

The carrier material generally used, is likely to be one of the following: low density polyethylene, polypropylene, polystyrene, EVA, low molecular weight wax, an alkyd resin, or a more polymer specific material.

Masterbatch and pigments for the plastics processing industry, including speciality masterbatches and speciality pigments, to add colour and other special qualities to the end plastic part or plastic product.

Masterbatch is a solid or liquid additive for plastic used for coloring plastics (color masterbatch) or imparting other properties to plastics (additive masterbatch).

Masterbatch is a concentrated mixture of pigments and/or additives encapsulated during a heat process into a carrier resin which is then cooled and cut into a granular shape. Masterbatch allows the processor to colour raw polymer economically during the plastics manufacturing process.

Different types of Masterbatches are as follows:

  1. White Masterbatch
  2. Black Masterbatch
  3. Color Masterbatch
  4. Additive Masterbatch
  5. Filler Masterbatch

1) White Masterbatch

White Masterbatch is mostly made from TiO2 (titanium dioxide) which is either rutile or anatase.

2) Black Masterbatch

Black Masterbatch is made with carbon black pigment.

3) Colour Masterbatch

Colour Masterbatches are made in several forms depending on the aesthetic required for the type of plastic it is being made for. These are the possibilities - opaque, transparent, translucent, special effects, etc.

4) Additive Masterbatches

Additive Masterbatches can be of several types which are as follows:

  1. Anti -slip Masterbatches
  2. Anti-block Masterbatches
  3. Polymer Processing Aid Masterbatches
  4. Anti-static Masterbatches
  5. UV Stabiliser Masterbatches including Green House Film Masterbatches
  6. Nucleating & Clarifying Agent Masterbatches
  7. Anti-Warp Masterbatches
  8. Chemical Foaming Agent Masterbatches (Exothermic & Endothermic)
  9. Anti-sink Masterbatches for Sink mark removal
  10. Antimicrobial Masterbatches
  11. Foam Nucleators for Expanded Polystyrene and Expanded Polyethylene
  12. Anti-fogging Masterbatches
  13. Heat stabilizers
  14. Flame Retardant packages
  15. Stiffening Agents
  16. Anti-oxidants
  17. Optical brighteners
  18. Anti-Counterfeiting
  19. Chain Extenders
  20. Solar Heat Reflection
  21. Infrared Masterbatches

5) Filler Masterbatch

Filler masterbatches provide cost reduction and also depending on the design of the type of filler Masterbatch, offer better properties such as stiffness, anti-fibrilation, etc.

Features & Benefits

Processing

  • Rheology of polymer melt
  • Improved mold fill operation
  • Suppression of melt fracture
  • Improved mold release
  • Increased productivity
  • Lubrication
  • Higher filler content

Surface modification

  • Improved scratch resistance
  • Suppression of shark skin
  • Lowered surface roughness
  • Improved chemical resistance
  • Improved water resistance

Material property enhancer

  • Improved impact strengh
  • Reduced brittleness
  • Higher plasticity
  • Higher elongation
  • Enhanced flame resistance
  • Improved low temperature stability
  • Improved heat distortion temperature

Applications

  • Injection Molding
  • Blow molding
  • Film Extrusion
  • Sheet Extrusion
  • PP and PE woven sack extrusion
  • Roto moulding
  • PP and PE Mono filaments
  • Pipe Extrusion