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    • 10. 发明申请
    • ADHESIVE SHEET AND COPPER-CLAD LAMINATE
    • 粘合片和铜箔层压板
    • US20110308725A1
    • 2011-12-22
    • US13221358
    • 2011-08-30
    • Hisayasu KaneshiroTakashi Kikuchi
    • Hisayasu KaneshiroTakashi Kikuchi
    • C09J7/02
    • H05K1/0346C09J7/25C09J2479/086H05K1/0393H05K3/386H05K2201/0154H05K2201/068Y10T428/2852Y10T428/31678
    • Disclosed is an adhesive film having high dimensional stability which can be suitably used for two layer FPCs. Specifically, disclosed is an adhesive sheet composed of an insulting layer and an adhesive layer arranged on one side or both sides of the insulating layer. This adhesive sheet is characterized in that the insulating layer has a ratio E′2/E′1 between the storage elasticity modulus E′1 at 25° C. and the storage elasticity modulus E′2 at 380° C. of not more than 0.2 and a coefficient of thermal expansion in the MD direction of 5-15 ppm at 100-200° C. It is further characterized in that the change in the coefficient of thermal expansion of the adhesive sheet at 100-250° C. after heat treatment at 380° C. for 30 second under tension of 20 kg/m is not more than 2.5 ppm in the tension direction and not more than 10 ppm in the direction perpendicular to the tension direction.
    • 公开了一种具有高尺寸稳定性的粘合膜,其可以适用于两层FPC。 具体地,公开了由绝缘层和布置在绝缘层的一侧或两侧上的粘合层构成的粘合片。 该粘合片的特征在于绝缘层在25℃下的储能弹性模量E'1与380℃下的储能弹性模量E'2之间的比率E'2 / E'1不大于 0.2,在100〜200℃下MD方向的热膨胀系数为5〜15ppm。其特征还在于,热处理后的粘合片的热膨胀系数在100〜250℃的变化 在拉伸方向下在380℃,30秒的拉伸下处理30秒,在拉伸方向垂直的方向不大于10ppm。