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    • 4. 发明授权
    • Adhesive tape and process for its production
    • 胶带及其生产工艺
    • US4447485A
    • 1984-05-08
    • US397237
    • 1982-07-12
    • Toshiyuki Aritake
    • Toshiyuki Aritake
    • C09J7/02B32B5/16
    • C09J7/0253C09J7/025C09J2201/162C09J2205/114C09J2400/10C09J2423/006C09J2423/105C09J2423/106C09J2433/00Y10T428/2438Y10T428/2443Y10T428/24942Y10T428/2495Y10T428/25Y10T428/258Y10T428/259Y10T428/2848Y10T428/2852Y10T428/2878Y10T428/2891
    • An adhesive tape comprises a base sheet of a polypropylene resin, an adhesive layer formed on one side of the base sheet and a roughened surface layer formed on the other side of the base sheet and composed of a polypropylene resin containing fine inorganic filler particles, in which the roughened surface layer has a thickness of not more than the maximum particle diameter of said fine inorganic filler particles and is substantially free from voids or cracks, and the total percent light transmittance of the tape is at least 90%. Such an adhesive tape is produced by a process which comprises forming an adhesive layer on one side of a base sheet of a polypropylene resin and a surface layer of a polypropylene resin having a melting point lower than that of the polypropylene resin of the base sheet and containing fine inorganic filler particles, on the other side of the base sheet to obtain an unstretched laminated sheet, and then stretching the laminated sheet at a temperature of at least the melting point of the polypropylene resin of the surface layer to bring the thickness of the surface layer to be not more than the maximum particle diameter of said fine inorganic filler particles.
    • 一种胶带包括聚丙烯树脂的基片,在基片的一侧上形成的粘合剂层和形成在基片的另一侧上并由含有无机填料颗粒的聚丙烯树脂组成的粗糙表面层, 粗糙表面层的厚度不大于所述无机填料颗粒的最大粒径,并且基本上没有空隙或裂纹,并且带的总透光率的总和至少为90%。 这种粘合带通过以下方法制造,该方法包括在聚丙烯树脂的基片的一侧上形成粘合剂层和熔点低于基片的聚丙烯树脂的聚丙烯树脂的表面层, 在基片的另一面上含有无机填料粒子,得到未拉伸的层压片材,然后在至少表面层的聚丙烯树脂的熔点的温度下拉伸层叠片材, 表面层不超过所述无机填料颗粒的最大粒径。
    • 9. 发明授权
    • Adhesive tape and process for its production
    • 胶带及其生产工艺
    • US4513028A
    • 1985-04-23
    • US567870
    • 1984-03-05
    • Toshiyuki Aritake
    • Toshiyuki Aritake
    • C09J7/02B32B31/16
    • C09J7/0253C09J7/025C09J2201/162C09J2205/114C09J2400/10C09J2423/006C09J2423/105C09J2423/106C09J2433/00Y10T428/2438Y10T428/2443Y10T428/24942Y10T428/2495Y10T428/25Y10T428/258Y10T428/259Y10T428/2848Y10T428/2852Y10T428/2878Y10T428/2891
    • An adhesive tape comprises a base sheet of a polypropylene resin, an adhesive layer formed on one side of the base sheet and a roughened surface layer formed on the other side of the base sheet and composed of a polypropylene resin containing fine inorganic filler particles, in which the roughened surface layer has a thickness of not more than the maximum particle diameter of said fine inorganic filler particles and is substantially free from voids or cracks, and the total percent light transmittance of the tape is at least 90%. Such an adhesive tape is produced by a process which comprises forming an adhesive layer on one side of a base sheet of a polypropylene resin and a surface layer of a polypropylene resin having a melting point lower than that of the polypropylene resin of the base sheet and containing fine inorganic filler particles, on the other side of the base sheet to obtain an unstretched laminated sheet, and then stretching the laminated sheet at a temperature of at least the melting point of the polypropylene resin of the surface layer to bring the thickness of the surface layer to be not more than the maximum particle diameter of said fine inorganic filler particles.
    • 一种胶带包括聚丙烯树脂的基片,在基片的一侧上形成的粘合剂层和形成在基片的另一侧上并由含有无机填料颗粒的聚丙烯树脂组成的粗糙表面层, 粗糙表面层的厚度不大于所述无机填料颗粒的最大粒径,并且基本上没有空隙或裂纹,并且带的总透光率的总和至少为90%。 这种粘合带通过以下方法制造,该方法包括在聚丙烯树脂的基片的一侧上形成粘合剂层和熔点低于基片的聚丙烯树脂的聚丙烯树脂的表面层, 在基片的另一面上含有无机填料粒子,得到未拉伸的层压片材,然后在至少表面层的聚丙烯树脂的熔点的温度下拉伸层叠片材, 表面层不超过所述无机填料颗粒的最大粒径。