DOUBLE FACE ADHESIVE SHEET FOR FIXATION OF HARD DISK DRIVE COMPONENT, AND HARD DISK DRIVE

摘要

This invention provides a double face adhesive sheet for the fixation of a hard disk drive component, comprising a pressure-sensitive adhesive part comprising a plastic film base material having a thickness of not more than 20 µm and a pressure-sensitive adhesive layer provided on both sides of the plastic film base material, and a nonsilicone release liner provided on the surfaces of both sides of the pressure-sensitive adhesive part. The double face adhesive sheet is characterized in that the thickness of the pressure-sensitive adhesive part is not more than 60 µm, and the amount of outgas upon heating of the pressure-sensitive adhesive part at 120°C for 10 min is not more than 1 µg/cm2. The double face adhesive sheet is free from silicone and thus is excellent in low contamination and outgas suppression, as well as in working properties. The conformability to difference in level is improved by bringing the thickness of the plastic film base material to not more than 13 µm. When the gel fraction of the pressure-sensitive adhesive layer is 10 to 60%, "lifting" from an adherend is less likely to occur even when a heating step is carried out after the application of the sheet.