Pressure sensitive adhesive labels for hard drives

In recent years, the demand for civilian hard drives, such as those used in personal computers, has grown tremendously. With this demand, the miniaturization of the hard drive itself and the reduction of noise generated by the hard drive (silence assurance) have been considered as important as the increased storage capacity.

As a measure to reduce the noise produced by the hard disk drive, the vibration damping steel sheet is generally used on a part of the hard disk drive housing (such as the cover plate). However, from the Angle of reducing size and weight, reducing noise, productivity or cost, the use of vibration damping steel sheet method is not considered to be another satisfactory measure. This is particularly evident in hard drives with recording platters no larger than 2.5 inches in diameter.

Therefore, the inventor et al. proposed a pressure sensitive adhesive label for hard drives (hereafter occasionally referred to as “HDD pressure sensitive adhesive label”), which is affixed to the outer surface of the hard drive housing to reduce the noise generated by the hard drive when it is driven.

By utilizing this HDD pressure sensitive adhesive label, noise reduction can be achieved and information labeling function is given. HDD pressure-sensitive adhesive labels have a pressure-sensitive adhesive layer that is generally covered with a release liner (i.e., protected by the anti-adhesive liner) before HDD pressure-sensitive adhesive labels are used (pasted). When the HDD pressure sensitive adhesive label is used, the anti-adhesive pair disengages, exposing the surface of the pressure sensitive adhesive layer, and the HDD pressure sensitive adhesive label is then attached to the outer surface of the hard drive housing.

On the other hand, precise electronic components such as hard disk drives can be damaged by weak static electricity and need to be protected from such damage. However, in HDD pressure-sensitive adhesive labels, static electricity can be generated, leading to peeling electrification when the lining covering the pressure-sensitive adhesive layer is detached from HDD pressure-sensitive adhesive labels, at which point the current generated can lead to damage to precision electronic devices. Therefore, HDD pressure sensitive adhesive labels are required to have a small amount of peeling power when the anti-stick lining is detached.