Fillers: Plastics & Films

With a range of particle sizes and grades, ultrafine perlite microspheres offer advantages as a filler for plastics and films, including:

• Weight reduction
• Shrink and/or crack resistance
• Low volume-based cost compared to binders and some other fillers
• Whiteness
• Impact resistance
• Machinability and ease of sanding
• Nail and screw holding ability
• Flexural strength modification
• Gloss and sheen control
• Pigment extension
• Inertness and non-toxicity
• Water and/or air permeability
• Fire resistance
• Insulation
• Modification of acoustic properties

Perlite ultrafine fillers have been used in a number applications for many years, including:

• Silicone rubber
• Synthetic rubbers
• Natural rubbers
• Thermoplastic resins
• Decorative home and garden fixtures
• Thermosetting resins
• Paint
• Coatings
• Polishes
• Cleansers