Aluminum Oxide Plastic Lens Polishes

Ferro is a leading global manufacturer of high-purity, alumina-based plastic lens polishing compounds that deliver the excellent polishing performance and high-quality finished surfaces required for optical lens surfacing.

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We manufacture a diverse portfolio of high-purity alumina slurry products and powders available with varying characteristics, allowing our customers to select the best option for polishing resin-based prescription lenses. 

Aspire™ is Ferro’s premium alumina polishing slurry product formulated to be used with digital/freeform and conventional prescription lens polishing processes.  It can be used to polish all resin-based ophthalmic lens substrates.

All our aluminum oxide products are manufactured to tightly controlled requirements assuring our customers of the best possible outcome and consistent product performance from batch to batch.

ALUMINUM OXIDE PLASTIC LENS POLISHING SLURRY PRODUCTS AND APPLICATIONS

Product Name  Product Grade  Surface Quality  Particle Size (µm)
Typical Properties 
Baumé
Typical Properties 
pH 
Typical Properties 
Suspension
Treated 
Application 
Aspire(TM)  900  Premium Excellent D50: 1.3 - 1.8  20 Minimum  3.2 - 4.2   Yes Optimum Choice for
Digital/Freeform
and Conventional Polishing Applications 
714Y  High End  Excellent  D50: 1.8- 2.2  24 Minimum  3.2 - 4.2   Yes Optimum Choice for
Conventional Lens Polishing. 
Good for Digital/Freeform
Polish Applications 
763  Intermediate  Good  D50: 2.4 - 3.4  20 Minimum  3.0 - 4.2   Yes Good for
Conventional Polishing and
Digital/Freeform Polish Applications 
774  Economy  Very Good  D50: 1.9 - 2.2  18 Minimum  3.2 - 4.2   Yes Suitable for
Conventional Polishing
and Digital/Freeform Polish Applications 
  

 ALUMINUM OXIDE PLASTIC LENS POLISHING POWDER PRODUCTS AND APPLICATIONS

Product Name  Product Grade  Surface Quality  Particle Size
Typical Properties (µm) 
Application 
721  Intermediate
Fine Grain
Excellent D50: 1.5 - 3.0 Good for
Polishing Contact Lenses
722  Fine Grain  Superior D50: 0.4 - 1.5 Optimum Choice for
Polishing Contact Lenses
and IOL (Intraocular Lenses)
 

Ferro also offers other powder and slurry materials available upon request.

ALUMINUM OXIDE PLASTIC LENS POLISH PRODUCTS - KEY FEATURES

  • Tightly controlled particle distribution ensures high quality polished surfaces
  • Excellent suspension characteristics ensures uniform polish distribution for more consistent polishing performance with high stock removal rate
  • Stable Baumé throughout the life of the polish
  • Low polish carry out reduces polish consumption and reduces cost of ownership
  • Low foaming and easy clean formulations
  • Delivers outstanding results with today’s most advanced digital free form polishers as well as with conventional-lap based polishers

ELECTRONIC MATERIALS VALUE ADDED SERVICES

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With over 40 years of surface finishing experience, Ferro’s research, development and analytical resources enable us to develop unique polishes and abrasives for polishing a variety of substrates, including plastic, glass, clear coat automotive, and sapphire. 

Our expertise in abrasive particle development and manufacturing technology enables us to optimize the physical and chemical properties of particles that allows our customers to develop optimal polishing applications.