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  • Diamond Film Polishes Optical Surfaces

May 2008
3M, Electronic Solutions Div.Request Info
• 1-, 3-, 6-, 9-μm grades
• 2.97-mil thickness
• sheets, discs or rolls

3M_IDLF.jpg3M Co. has released a long-life, precision-coated diamond lapping film with high durability. The 660XV combines a high cut rate with a very good finish and is designed for use on slower-rpm polishing machines. It is available in 1-, 3-, 6- and 9-μm grades, both with and without pressure-sensitive adhesive backing.

Applications include fibre optic connector processing, flat lapping, superfinishing and a variety of substrates made of ceramics, glass, stone, carbide, composites, exotic alloys and other hard materials.

The film is made by using tightly graded diamond minerals that are precision-coated on a polyester film backing. The company says that this durable construction provides consistent processing and superior finishes over the extended life of the product. It also stresses that the new film reduces process time, produces high yields and eliminates slurries. Intended for multiple uses, the actual number of uses is dependent upon equipment, process parameters and materials processing.

The material is supplied in the converted form of sheets, discs and rolls with a maximum diameter and width of 300 mm. The nominal thickness is 3 mil, with actual values specified as 2.97 ±0.05. The ultimate tensile strength is 26,500 psi, typical.


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