Additive | Processing Aid

Additive | Processing AidMasterbatchProducts

Processing Aid Masterbatch

 

 

 

Processing Aid Masterbatch consists of a concentrated mixture of pigments and/or encapsulated additives manufactured by heating a carrier resin and then cooling it and cutting it into granules. The masterbatch thus allows the transformer to colour and give characteristics to the natural polymer economically in the plastics transformation process.

 

 

Technical Advantages | Shelf Life

 

  • Prevents problems of agglomeration of additives or colourants as well as dispersion problems.
  • Does not contain solvents and therefore has a longer shelf life.
  • Contains an average of 40-65% additive, but the range can reach 15-80% in extreme cases.
  • A 25kg bag processes up to one tonne of raw material. Thus, the relatively dilute nature of the materbatches allows for greater precision when dosing small quantities.

 

 

Carrier and Dosage

 

The masterbatch carrier must be identical/compatible with the polymer. For example, EVA or LDPE is a compatible carrier with polyolefins and nylon, as is polystyrene with ABSSAN and sometimes polycarbonates.

 

In this sense, when the masterbatch carrier is incompatible with the raw material, changes may occur in the properties of the processed material. The processor must specify the characteristics of the raw material. The percentage of use of masterbatches in relation to the raw material is between 1 and 5 %. Colour and additive masterbatches can be combined.

 

 

Adverse effects

 

  • Adverse effects sometimes occur, such as the masterbatch separating from the raw material in the machine hopper.
  • The masterbatch, solid or liquid, is added directly to the machine spindle via a peristaltic pump.
  • The use of liquid masterbatches also makes it possible to obtain highly precise dosages and rapid colour changes between production runs.

 

 

Processing Aid Masterbatch | Transformation processes

 

Masterbatches are compatible with most processes, with the exception of rotational moulding, plastisol and other liquid resin systems.

 

 

 

Processing Aid Masterbatch contain fluoropolymer-based Polymer Processing Additives. Because of the incompatibility of the fluoropolymers with the plastics and the high affinity for the metal, a thin coating is formed in the extruder die. The friction between the molten plastic and the metal die-wall reduces, resulting in a reduced stress on the plastic. This eliminates the melt fracture during the extrusion of (m)LLDPE rich blends at high shear rates (output rates). The head pressure reduces, production can be optimized, films have a higher gloss.

 

The addition Processing Aid Masterbatches products used in PE, PP, PS, … will minimize any die lip build-up. Less stops will be required for cleaning of the die lips, resulting in a higher productivity, thus reduced cost.

 

 

Typical Benefits by using Processing Aid Masterbatches:

 

    • Elimination of melt fracture in (m)LLDPE
    • Reduce operating pressures
    • increase output
    • Higher levels of LLDPE in LDPE blending
      • Better mechanical properties
      • Down gauging
    • Improve processing of lower MI resins
    • Extrusion through narrower die gaps
      • less machine direction drawing
      • better balance of properties
      • more efficient cooling –> better optical properties
      • improved gauge control
    • Reduce Die Build-up: Longer run-times in between cleaning stops
    • Reduction in gel formation during extrusion
    • Faster color change
    • Increase gloss and improve surface smoothness
    • Reduce variations in thickness profile

 

 

ADPLAST® provides a wide range of Color Masterbatches with a concentration up to 80% titanium dioxide based on PE, PP, PS, PA, ABS and Polyester. Black Masterbatch range has applicability in: labels, lamination, protective films, coating, agriculture, thin-wall packaging, fibers and nonwovens, bottles, injection-molded articles, etc.

 

Indeed, we have tailor-made solutions capable of achieving excellent quality-performance ratios.

 

 

Contact us.

 

 

 

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