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    • 99. 发明申请
    • Pressure-sensitive adhesive sheet and covered structure
    • 压敏胶片和覆盖结构
    • US20020155244A1
    • 2002-10-24
    • US09980677
    • 2001-10-31
    • Isao SakuraiTomoo OhruiHiroshi KoikeShigenobu MaruokaTomishi Shibano
    • B32B007/06
    • C09J7/29C09J7/38C09J2400/163C09J2400/283C09J2423/005C09J2433/00C09J2433/005Y10T428/14Y10T428/1405Y10T428/1471Y10T428/1476Y10T428/2839
    • Disclosed herein is a pressure sensitive adhesive sheet and a pressure sensitive adhesive sheet with a release sheet which hardly give adverse effects to hard disc drives or the like. The pressure sensitive adhesive sheet with the release sheet is constructed from a pressure sensitive adhesive sheet having a pressure sensitive adhesive base and a pressure sensitive adhesive layer, and a release sheet having a release sheet base and a releasing agent layer, and the release sheet is adhered onto the pressure sensitive adhesive sheet so that the releasing agent layer contacts with the pressure sensitive adhesive layer. In this pressure sensitive adhesive sheet with the release sheet, the content of silicone compound in the pressure sensitive adhesive sheet is preferably equal to or less than 500 nullg/m2. Further, it is preferable that the amount of gas generated from the pressure sensitive adhesive sheet at a temperature of 85null C. for 30 minutes is equal to or less than 20 mg/m2. Furthermore, it is also preferable that the sum of amounts of NOxnull, Clnull, PO43null, Knull, Fnull, Nanull and Ca2null contained in the pressure sensitive adhesive sheet is equal to or less than 20 mg/m2.
    • 本文公开了一种压敏粘合片和具有剥离片的压敏粘合片,其对硬盘驱动器等几乎不产生不利影响。 具有剥离片的压敏粘合片由具有压敏粘合剂基底和压敏粘合剂层的压敏粘合片和具有剥离片基底和脱模剂层的剥离片构成,剥离片是 粘附到压敏粘合片上,使得脱模剂层与压敏粘合剂层接触。 在具有剥离片的压敏粘合片中,压敏粘合片中的硅氧烷化合物的含量优选为500mug / m 2以下。 此外,优选在温度为85℃,30分钟时从压敏粘合片产生的气体量等于或小于20mg / m 2。 另外,压敏粘合片中所含的NOx-,Cl-,PO43-,K +,F-,Na +,Ca2 +的总和也优选为20mg / m 2以下。