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    • 6. 发明专利
    • Tacky adhesive sheet
    • TACKY粘合片
    • JP2011202042A
    • 2011-10-13
    • JP2010071220
    • 2010-03-26
    • Dainippon Printing Co Ltd大日本印刷株式会社
    • HOSHI KENTAROKUROKI JUNICHIUEKI TAKAYUKITANIGUCHI TAKAHISA
    • C09J7/02B32B27/00B32B27/30C09J7/04C09J11/06C09J121/00C09J129/10C09J133/00C09J133/04C09J163/00
    • PROBLEM TO BE SOLVED: To provide a tacky adhesive sheet having initial tackiness, capable of adhering a metal to an organic material or the like, and having high adhesive strength and the adhesive strength hardly degrading by a temperature change.SOLUTION: The tacky adhesive sheet 1 has both of tackiness and adhesiveness and comprises a first release sheet 21A, a tacky adhesive layer 11 and a second release sheet 21B, wherein the tacky adhesive constituting the tacky adhesive layer 11 comprises one or more compounds selected from a vinyl formal resin, a rubber elastic epoxy resin and a core-shell particulate rubber, and an acrylic resin, an epoxy resin and a curing agent. After the tacky adhesive layer 11 is cured at 180°C for one hour, the layer shows a peak of glass transition temperature Tg within the range from 30 to 70°C. Further, the layer shows each one, in total two Tg peaks in the range from 30 to 70°C and in the range from 90 to 150°C, or one Tg in the range from 30 to 70°C and no Tg in the range from 90 to 150°C.
    • 要解决的问题:提供具有初始粘合性的粘性粘合片,能够将金属粘附到有机材料等上,并且具有高粘合强度和粘合强度几乎不会由于温度变化而劣化。解决方案:粘性粘合片 1具有粘性和粘合性,并且包括第一剥离片21A,粘性粘合剂层11和第二剥离片21B,其中构成粘性粘合剂层11的粘性粘合剂包含一种或多种选自乙烯基甲醛树脂, 橡胶弹性环氧树脂和核 - 壳微粒橡胶,以及丙烯酸树脂,环氧树脂和固化剂。 在粘性层11在180℃下固化1小时后,该层的玻璃化转变温度Tg的峰值在30〜70℃的范围内。 此外,该层显示出每一个,总共两个Tg峰在30至70℃的范围内,在90至150℃的范围内,或一个Tg在30至70℃的范围内,而Tg 范围为90至150°C。