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UV curable tapes are used for smaller sizes and non-UV dicing tape for larger die sizes. Dicing saws may use a dicing blade with diamond particles, rotating at 30,000 RPM and cooled with deionized water. Once a wafer has been diced, the pieces left on the dicing tape are referred to as die, dice or dies.
Prior to grinding, wafers are commonly laminated with UV-curable back-grinding tape, which ensures against wafer surface damage during back-grinding and prevents wafer surface contamination caused by infiltration of grinding fluid and/or debris. [2]
Dicing tape can be made of PVC, polyolefin, or polyethylene backing material with an adhesive to hold the wafer or substrate in place. In some cases dicing tape will have a release liner that will be removed prior to mounting the tape to the backside of the wafers, with a variety of adhesive strengths, designed for various wafer/substrate sizes and materials.
UV curing (ultraviolet curing) is the process by which ultraviolet light initiates a photochemical reaction that generates a crosslinked network of polymers through radical polymerization or cationic polymerization. [1] UV curing is adaptable to printing, coating, decorating, stereolithography, and in the assembly of a variety of products and ...
A patch of speed tape on a United Airlines Airbus A319. Speed tape is sometimes used to protect sealant while curing, [4] or to patch non-critical components of an aircraft. [1] It can also be used for patching bullet damage to combat aircraft. [5] [6] Use of speed tape should be authorized by engineering teams, and has to comply with certain ...
Orange foods like sweet potatoes and carrots are also high in carotenoids, which are known to protect against UV damage and help improve skin elasticity, hydration and texture—win-win for ...