EVOCHEM provides a comprehensive portfolio of materials used in the ophthalmic industry.
Given our large scale production capabilities we can supply all required materials in every shape and quantity - from several grams to hundreds of kilograms.
Our dedicated ophthalmic product portfolio includes i.a.:
Newer hydrophobic and super hydrophobic lenses often create challenges during the edging process. These slippery or “non-stick” surfaces need special considerations. EVOCHEM with his partner CEKO has developed a special anti-slip pad (mask tape) to be used in during the edging process in combination with its Top CleanSafe product line.
Instruction for Use
1. Hydrophobic-Coating Stability
Start with a stable blocking surface: Prior to blocking, the lens should always be cleaned with reagent grade IPA to remove hydrophobic coating not tightly adhered to the AR layer. This will ensure adhesion to a stable surface.
2+3. Placement of the Anti-Slip-Pad
Correct Placement crucial: The Anti-Slip Pad should be firmly placed on the centre of the lens.
4. Blocking System: Disc/Pad/Block
Choosing the right blocking system components for the
Anti-Slip Pad: Blocking pads need to suit EVOCHEM‘s Anti-Slip Pads. The block radius and lens should be closely matched for optimum adhesion and wet-out. Block should be completely clean and dry prior to the edging process.
5. Final Assembly and Edging Settings
High pressure and slow cuts: A tight assembled Anti-Slip Pad and blocking allows for a perfect edging process. The ram pressure should be set on high and the cutting rate on slow for both cribbing and final edging.