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    • 48. 发明申请
    • FLEXIBLE GRAPHITE WITH NON-CARRIER PRESSURE SENSITIVE ADHESIVE BACKING AND RELEASE LINER
    • 柔性石墨与非载体压力敏感粘合剂背衬和释放内衬
    • WO0020525A8
    • 2000-05-25
    • PCT/US9920903
    • 1999-10-05
    • UCAR CARBON TECH
    • TZENG JING-WENGETZ GEORGE JRWEBER THOMAS WILLIAM
    • C09J7/02C04B35/536
    • C09J7/22C09J2201/128C09J2201/28C09J2433/00C09J2461/003Y10T428/14Y10T428/1405Y10T428/24372Y10T428/24999Y10T428/25Y10T428/30
    • A release lined pressure sensitive adhesive flexible graphite sheet article is provided having low thermal resistance properties comparable to the flexible graphite material itself when compared to prior art PSA sheet products and wherein the release liner is easily removed with the sheet to be used without any significant delamination of the flexible graphite. The flexible graphite sheet comprises a flexible graphite substrate, an adhesive primer coating thereon, a pressure sensitive adhesive coating on the adhesive primer coating and a release liner applied to the pressure sensitive adhesive coating. Double sided pressure sensitive adhesive flexible graphite sheets can also be made using the method of the invention. It has been found that the use of an adhesive primer coating on the flexible graphite substrate applied from an emulsion as a coating and dried instead of the prior art adhesive containing polymer layer applied as a solid film, such as Mylar film, provide the above desired thermal resistance properties and also enable the use of less pressure sensitive adhesive on the sheet thereby maintaining the low thermal resistance properties of the flexible graphite.
    • 与现有技术的粘合片产品相比,提供了具有低柔性石墨材料本身的低热阻性质的剥离衬里的压敏粘合剂柔性石墨片制品,并且其中剥离衬垫容易地与待使用的片材去除而没有任何明显的分层 的柔性石墨。 柔性石墨片包括柔性石墨基底,其上的粘合底漆涂层,粘合底漆涂层上的压敏粘合剂涂层和施加到压敏粘合剂涂层上的剥离衬垫。 双面压敏粘合剂柔性石墨片也可以使用本发明的方法制成。 已经发现,使用由乳液作为涂层施加的柔性石墨基底上的粘合剂底漆涂层,并且干燥而不是作为固体膜(例如Mylar膜)施加的现有技术的含有粘合剂的聚合物层提供了上述期望的 并且还能够在片材上使用较少的压敏粘合剂,从而保持柔性石墨的低耐热性能。