公开(公告)号：US4451531A

公开(公告)日：1984-05-29

申请号：US384063

申请日：1982-06-01

申请人： Yukihiro Isobe ,  Kazushi Tanaka ,  Masaharu Nishimatsu ,  Osamu Shinoura ,  Yuichi Kubota

发明人： Yukihiro Isobe ,  Kazushi Tanaka ,  Masaharu Nishimatsu ,  Osamu Shinoura ,  Yuichi Kubota

IPC分类号： C09D167/07 ,  G11B5/708 ,  G11B5/73 ,  G11B5/735 ,  B32B5/16

CPC分类号： G11B5/7085 ,  Y10S428/90 ,  Y10T428/252 ,  Y10T428/256 ,  Y10T428/257 ,  Y10T428/266

摘要： The invention provides a novel magnetic recording tape comprising a film base, a magnetic coating layer on one surface and a backing layer on the other surface, the backing layer containing an abrasive powder having a hardness of at least 4 in the Mohs scale, such as silicon carbide and the like, dispersed in a binder matrix formed by curing a radiation-sensitive polymer by irradiating with a high energy radiation, such as electron beams accelerated at a voltage of 100 to 750 kilovolts. Coating of the film base with a coating composition to form the backing layer is performed on the surface of the film base having been provided with the magnetic coating layer on the other surface and the radiation-curing of the backing layer is performed prior to winding the tape into a roll to give a specified tensile modulus so that the magnetic recording tape is freed from the problem of the phenomenon of dropout owing to the absence of any particulate material adhering to the tape surface as is sometimes unavoidable in the conventional manufacturing process. The product tape is also quite free from scratch formation by virtue of the presence of the abrasive powder in the backing layer also contributing to the decrease of dropout.

摘要翻译： 本发明提供了一种新颖的磁记录带，其包括膜基底，一个表面上的磁性涂层和另一个表面上的背衬层，该背衬层含有摩尔规格中硬度至少为4的磨料粉末，例如 碳化硅等分散在通过用高能辐射照射固化辐射敏感聚合物形成的粘合剂基质中，例如以100-750千伏的电压加速的电子束。 在具有在另一表面上设置有磁性涂层的膜基材的表面上进行用涂料组合物涂覆膜基底以形成背衬层，并且背衬层的辐射固化在卷绕之前进行 将其卷成卷以提供特定的拉伸模量，使得磁记录带由于没有任何颗粒材料粘附到带表面而免除掉落现象的问题，这在常规制造过程中有时是不可避免的。 由于在背衬层中存在磨料粉末，产品胶带也非常没有刮擦形成，也有助于减少脱落。