Q: |
Why has out gassing become such a demanding requirement in the disk drive industry? |
A: |
Hard disk drive manufacturers have not only increased memory capacity in disk drive assemblies, and have dramatically increased read/write rates. These performance advances have also greatly increased the sensitivity of the head/disk interface to particulate and chemical contamination. Coupled with higher spindle speeds, which generate increased heat, label and tape materials inside the drive mechanism may outgas more, depositing residue on critical surfaces in the drive assemblies. These changes in head technology require a new breed of electronically clean adhesives, which control out gassing and limit corrosion due to trace contaminants. Polyonics made three major technology improvements in its label materials for identification of disk drives:
Each disk drive manufacturer has different specifications for VOC’s, acrylic acid, silicones, particulate, and ionic contamination. |
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