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Plastics - Polyethylene/Polypropylene

High Temperature Cast Film or Extrusion Coating in a Durable Application

In exterior end-use applications that require extended outdoor service life, a durable pigment resistant to the weathering effects of UV light is strongly suggested. But to achieve this goal, it is necessary to apply a surface treatment to the pigment surface.

When polyolefin formulations that contain TiO2 with such applied surface treatments are extruded at temperatures over 500°F (260°C), volatiles from the surface of the pigment may be released, resulting in bubbles or holes in the finished product.

For many end users with outdoor film applications, retention of the film's physical properties for the longest practical time is the most important performance parameter. To meet such exposure requirements, Ti-Pure® R-105 is the preferred grade. The combination of a lower pigment loading, thicker film, and lower melt temperatures can be used to minimize the effects of volatiles on extruded film quality.

For applications requiring intermediate durability, Ti-Pure® R-350 provides significant processing dispersion and volatility advantages.

 

 

High Temperature Cast Film or Extrusion Coating Applications

When polyolefin formulations containing TiO2 are extruded at temperatures over 500°F (260°C), volatiles from the surface of the pigment may be released resulting in bubbles or holes in the finished product. The low volatile content of  Ti-Pure® R-350, R-104, or R-101 makes them ideally suited for high temperature cast film extrusion or extrusion coating.
Some key characteristics of each grade:

Ti-Pure® R-350

  • Excellent high temperature extrusion capability
  • Proprietary organic treatment for high load masterbatch at reduced viscosity
  • Excellent pigment dispersion quality
  • High tint strength to efficiently provide opacity
  • Blue pigment undertone for a clean white appearance
  • Unique combination of yellowing resistance and durability

Ti-Pure® R-104

  • Excellent high temperature extrusion capability
  • Proprietary organic treatment for high load masterbatch at reduced viscosity
  • Excellent pigment dispersion quality
  • High tint strength to efficiently provide opacity
  • Blue pigment undertone for a clean white appearance

Ti-Pure® R-101

  • Similar high temperature extrusion capability
  • Excellent pigment dispersion quality
  • Same high tint strength to efficiently provide opacity
  • Neutral pigment undertone